1551 lines
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1551 lines
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<head>
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<!-- Generated by javadoc (1.8.0_151) on Tue Oct 31 17:36:45 EDT 2017 -->
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<title>Database (Oracle - Berkeley DB Java Edition API)</title>
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<meta name="date" content="2017-10-31">
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var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10,"i12":10,"i13":10,"i14":10,"i15":10,"i16":10,"i17":10,"i18":10,"i19":42,"i20":42,"i21":10,"i22":10,"i23":10,"i24":10,"i25":10,"i26":10,"i27":10,"i28":10};
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<div class="aboutLanguage"><b>Berkeley DB Java Edition</b><br><font size=\"-1\"> version 7.5.11</font>
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<li>Summary: </li>
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<li>Nested | </li>
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<li>Constr | </li>
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<!-- ======== START OF CLASS DATA ======== -->
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<div class="header">
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<div class="subTitle">com.sleepycat.je</div>
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<h2 title="Class Database" class="title">Class Database</h2>
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</div>
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<div class="contentContainer">
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<ul class="inheritance">
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<li>java.lang.Object</li>
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<li>
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<ul class="inheritance">
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<li>com.sleepycat.je.Database</li>
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<dl>
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<dt>All Implemented Interfaces:</dt>
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<dd>java.io.Closeable, java.lang.AutoCloseable</dd>
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</dl>
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<dl>
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<dt>Direct Known Subclasses:</dt>
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<dd><a href="../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a></dd>
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</dl>
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<hr>
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<br>
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<pre>public class <span class="typeNameLabel">Database</span>
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extends java.lang.Object
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implements java.io.Closeable</pre>
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<div class="block">A database handle.
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<p>Database attributes are specified in the <a href="../../../com/sleepycat/je/DatabaseConfig.html" title="class in com.sleepycat.je"><code>DatabaseConfig</code></a> class. Database handles are
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free-threaded and may be used concurrently by multiple threads.</p>
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<p>To open an existing database with default attributes:</p>
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<blockquote><pre>
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Environment env = new Environment(home, null);
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Database myDatabase = env.openDatabase(null, "mydatabase", null);
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</pre></blockquote>
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<p>To create a transactional database that supports duplicates:</p>
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<blockquote><pre>
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DatabaseConfig dbConfig = new DatabaseConfig();
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dbConfig.setTransactional(true);
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dbConfig.setAllowCreate(true);
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dbConfig.setSortedDuplicates(true);
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Database db = env.openDatabase(txn, "mydatabase", dbConfig);
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</pre></blockquote></div>
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</li>
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</ul>
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</div>
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<div class="summary">
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<!-- ========== METHOD SUMMARY =========== -->
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<li class="blockList"><a name="method.summary">
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<!-- -->
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</a>
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<h3>Method Summary</h3>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd"> </span></span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr id="i0" class="altColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#close--">close</a></span>()</code>
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<div class="block">Discards the database handle.</div>
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</td>
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</tr>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#compareDuplicates-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">compareDuplicates</a></span>(<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry1,
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry2)</code>
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<div class="block">Compares two data elements using either the default comparator if no
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duplicate comparator has been set or the duplicate comparator if one has
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been set.</div>
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</td>
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</tr>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#compareKeys-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">compareKeys</a></span>(<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry1,
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry2)</code>
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<div class="block">Compares two keys using either the default comparator if no BTree
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comparator has been set or the BTree comparator if one has been set.</div>
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</td>
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</tr>
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<tr id="i3" class="rowColor">
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<td class="colFirst"><code>long</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#count--">count</a></span>()</code>
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<div class="block">Counts the key/data pairs in the database.</div>
|
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</td>
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</tr>
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<tr id="i4" class="altColor">
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<td class="colFirst"><code>long</code></td>
|
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#count-long-">count</a></span>(long memoryLimit)</code>
|
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<div class="block">Counts the key/data pairs in the database.</div>
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</td>
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</tr>
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<tr id="i5" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#delete-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-">delete</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key)</code>
|
||
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<div class="block">Removes records with a given key from the database.</div>
|
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</td>
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</tr>
|
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<tr id="i6" class="altColor">
|
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationResult.html" title="class in com.sleepycat.je">OperationResult</a></code></td>
|
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#delete-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.WriteOptions-">delete</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
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||
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<a href="../../../com/sleepycat/je/WriteOptions.html" title="class in com.sleepycat.je">WriteOptions</a> options)</code>
|
||
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<div class="block">Removes records with a given key from the database.</div>
|
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</td>
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</tr>
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<tr id="i7" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationResult.html" title="class in com.sleepycat.je">OperationResult</a></code></td>
|
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#get-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Get-com.sleepycat.je.ReadOptions-">get</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
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<a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> getType,
|
||
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<a href="../../../com/sleepycat/je/ReadOptions.html" title="class in com.sleepycat.je">ReadOptions</a> options)</code>
|
||
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<div class="block">Retrieves a record according to the specified <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je"><code>Get</code></a> type.</div>
|
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</td>
|
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</tr>
|
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<tr id="i8" class="altColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a></code></td>
|
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#get-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.LockMode-">get</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
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<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
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<a href="../../../com/sleepycat/je/LockMode.html" title="enum in com.sleepycat.je">LockMode</a> lockMode)</code>
|
||
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<div class="block">Retrieves the key/data pair with the given key.</div>
|
||
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</td>
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</tr>
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<tr id="i9" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/DatabaseConfig.html" title="class in com.sleepycat.je">DatabaseConfig</a></code></td>
|
||
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#getConfig--">getConfig</a></span>()</code>
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<div class="block">Returns this Database object's configuration.</div>
|
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</td>
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</tr>
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<tr id="i10" class="altColor">
|
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<td class="colFirst"><code>java.lang.String</code></td>
|
||
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#getDatabaseName--">getDatabaseName</a></span>()</code>
|
||
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<div class="block">Returns the database name.</div>
|
||
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</td>
|
||
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</tr>
|
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<tr id="i11" class="rowColor">
|
||
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a></code></td>
|
||
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#getEnvironment--">getEnvironment</a></span>()</code>
|
||
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<div class="block">Returns the <a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je"><code>Environment</code></a> handle for
|
||
|
the database environment underlying the <a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>.</div>
|
||
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</td>
|
||
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</tr>
|
||
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<tr id="i12" class="altColor">
|
||
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#getSearchBoth-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.LockMode-">getSearchBoth</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
|
<a href="../../../com/sleepycat/je/LockMode.html" title="enum in com.sleepycat.je">LockMode</a> lockMode)</code>
|
||
|
<div class="block">Retrieves the key/data pair with the given key and data value, that is,
|
||
|
both the key and data items must match.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
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<tr id="i13" class="rowColor">
|
||
|
<td class="colFirst"><code>java.util.List<<a href="../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a>></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#getSecondaryDatabases--">getSecondaryDatabases</a></span>()</code>
|
||
|
<div class="block">Returns a list of all <a href="../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je"><code>SecondaryDatabase</code></a> objects associated with a primary database.</div>
|
||
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</td>
|
||
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</tr>
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||
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<tr id="i14" class="altColor">
|
||
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/DatabaseStats.html" title="class in com.sleepycat.je">DatabaseStats</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#getStats-com.sleepycat.je.StatsConfig-">getStats</a></span>(<a href="../../../com/sleepycat/je/StatsConfig.html" title="class in com.sleepycat.je">StatsConfig</a> config)</code>
|
||
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<div class="block">Returns database statistics.</div>
|
||
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</td>
|
||
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</tr>
|
||
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<tr id="i15" class="rowColor">
|
||
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/JoinCursor.html" title="class in com.sleepycat.je">JoinCursor</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#join-com.sleepycat.je.Cursor:A-com.sleepycat.je.JoinConfig-">join</a></span>(<a href="../../../com/sleepycat/je/Cursor.html" title="class in com.sleepycat.je">Cursor</a>[] cursors,
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||
|
<a href="../../../com/sleepycat/je/JoinConfig.html" title="class in com.sleepycat.je">JoinConfig</a> config)</code>
|
||
|
<div class="block">Creates a specialized join cursor for use in performing equality or
|
||
|
natural joins on secondary indices.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i16" class="altColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/DiskOrderedCursor.html" title="class in com.sleepycat.je">DiskOrderedCursor</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#openCursor-com.sleepycat.je.DiskOrderedCursorConfig-">openCursor</a></span>(<a href="../../../com/sleepycat/je/DiskOrderedCursorConfig.html" title="class in com.sleepycat.je">DiskOrderedCursorConfig</a> cursorConfig)</code>
|
||
|
<div class="block">Create a DiskOrderedCursor to iterate over the records in 'this'
|
||
|
Database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i17" class="rowColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/Cursor.html" title="class in com.sleepycat.je">Cursor</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#openCursor-com.sleepycat.je.Transaction-com.sleepycat.je.CursorConfig-">openCursor</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/CursorConfig.html" title="class in com.sleepycat.je">CursorConfig</a> cursorConfig)</code>
|
||
|
<div class="block">Returns a cursor into the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i18" class="altColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/Sequence.html" title="class in com.sleepycat.je">Sequence</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#openSequence-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.SequenceConfig-">openSequence</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/SequenceConfig.html" title="class in com.sleepycat.je">SequenceConfig</a> config)</code>
|
||
|
<div class="block">Opens a sequence in the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i19" class="rowColor">
|
||
|
<td class="colFirst"><code>void</code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#preload-long-">preload</a></span>(long maxBytes)</code>
|
||
|
<div class="block"><span class="deprecatedLabel">Deprecated.</span>
|
||
|
<div class="block"><span class="deprecationComment">As of JE 2.0.83, replaced by <a href="../../../com/sleepycat/je/Database.html#preload-com.sleepycat.je.PreloadConfig-"><code>preload(PreloadConfig)</code></a>.</p></span></div>
|
||
|
</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i20" class="altColor">
|
||
|
<td class="colFirst"><code>void</code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#preload-long-long-">preload</a></span>(long maxBytes,
|
||
|
long maxMillisecs)</code>
|
||
|
<div class="block"><span class="deprecatedLabel">Deprecated.</span>
|
||
|
<div class="block"><span class="deprecationComment">As of JE 2.0.101, replaced by <a href="../../../com/sleepycat/je/Database.html#preload-com.sleepycat.je.PreloadConfig-"><code>preload(PreloadConfig)</code></a>.</p></span></div>
|
||
|
</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i21" class="rowColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/PreloadStats.html" title="class in com.sleepycat.je">PreloadStats</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#preload-com.sleepycat.je.PreloadConfig-">preload</a></span>(<a href="../../../com/sleepycat/je/PreloadConfig.html" title="class in com.sleepycat.je">PreloadConfig</a> config)</code>
|
||
|
<div class="block">Preloads the cache.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i22" class="altColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">put</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data)</code>
|
||
|
<div class="block">Stores the key/data pair into the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i23" class="rowColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationResult.html" title="class in com.sleepycat.je">OperationResult</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Put-com.sleepycat.je.WriteOptions-">put</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
|
<a href="../../../com/sleepycat/je/Put.html" title="enum in com.sleepycat.je">Put</a> putType,
|
||
|
<a href="../../../com/sleepycat/je/WriteOptions.html" title="class in com.sleepycat.je">WriteOptions</a> options)</code>
|
||
|
<div class="block">Inserts or updates a record according to the specified <a href="../../../com/sleepycat/je/Put.html" title="enum in com.sleepycat.je"><code>Put</code></a>
|
||
|
type.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i24" class="altColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#putNoDupData-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">putNoDupData</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data)</code>
|
||
|
<div class="block">Stores the key/data pair into the database if it does not already appear
|
||
|
in the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i25" class="rowColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#putNoOverwrite-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">putNoOverwrite</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data)</code>
|
||
|
<div class="block">Stores the key/data pair into the database if the key does not already
|
||
|
appear in the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i26" class="altColor">
|
||
|
<td class="colFirst"><code>void</code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#removeSequence-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-">removeSequence</a></span>(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key)</code>
|
||
|
<div class="block">Removes the sequence from the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i27" class="rowColor">
|
||
|
<td class="colFirst"><code>void</code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#sync--">sync</a></span>()</code>
|
||
|
<div class="block">Flushes any cached information for this database to disk; only
|
||
|
applicable for deferred-write databases.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
<tr id="i28" class="altColor">
|
||
|
<td class="colFirst"><code><a href="../../../com/sleepycat/je/DatabaseStats.html" title="class in com.sleepycat.je">DatabaseStats</a></code></td>
|
||
|
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Database.html#verify-com.sleepycat.je.VerifyConfig-">verify</a></span>(<a href="../../../com/sleepycat/je/VerifyConfig.html" title="class in com.sleepycat.je">VerifyConfig</a> config)</code>
|
||
|
<div class="block">Verifies the integrity of the database.</div>
|
||
|
</td>
|
||
|
</tr>
|
||
|
</table>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<h3>Methods inherited from class java.lang.Object</h3>
|
||
|
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
<div class="details">
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<!-- ============ METHOD DETAIL ========== -->
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList"><a name="method.detail">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<h3>Method Detail</h3>
|
||
|
<a name="close--">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>close</h4>
|
||
|
<pre>public void close()</pre>
|
||
|
<div class="block">Discards the database handle.
|
||
|
<p>
|
||
|
When closing the last open handle for a deferred-write database, any
|
||
|
cached database information is flushed to disk as if <a href="../../../com/sleepycat/je/Database.html#sync--"><code>sync()</code></a> were
|
||
|
called.
|
||
|
<p>
|
||
|
The database handle should not be closed while any other handle that
|
||
|
refers to it is not yet closed; for example, database handles should not
|
||
|
be closed while cursor handles into the database remain open, or
|
||
|
transactions that include operations on the database have not yet been
|
||
|
committed or aborted. Specifically, this includes <a href="../../../com/sleepycat/je/Cursor.html" title="class in com.sleepycat.je"><code>Cursor</code></a> and <a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je"><code>Transaction</code></a> handles.
|
||
|
<p>
|
||
|
When multiple threads are using the <a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a> handle concurrently, only a single thread may call this
|
||
|
method.
|
||
|
<p>
|
||
|
When called on a database that is the primary database for a secondary
|
||
|
index, the primary database should be closed only after all secondary
|
||
|
indices which reference it have been closed.
|
||
|
<p>
|
||
|
The database handle may not be accessed again after this method is
|
||
|
called, regardless of the method's success or failure, with one
|
||
|
exception: the <code>close</code> method itself may be called any number of
|
||
|
times.</p>
|
||
|
|
||
|
<p>WARNING: To guard against memory leaks, the application should
|
||
|
discard all references to the closed handle. While BDB makes an effort
|
||
|
to discard references from closed objects to the allocated memory for an
|
||
|
environment, this behavior is not guaranteed. The safe course of action
|
||
|
for an application is to discard all references to closed BDB
|
||
|
objects.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
|
||
|
<dd><code>close</code> in interface <code>java.io.Closeable</code></dd>
|
||
|
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
|
||
|
<dd><code>close</code> in interface <code>java.lang.AutoCloseable</code></dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if cursors associated with this database
|
||
|
are still open.</dd>
|
||
|
<dt><span class="seeLabel">See Also:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/DatabaseConfig.html#setDeferredWrite-boolean-"><code>DatabaseConfig.setDeferredWrite</code></a></dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="sync--">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>sync</h4>
|
||
|
<pre>public void sync()</pre>
|
||
|
<div class="block">Flushes any cached information for this database to disk; only
|
||
|
applicable for deferred-write databases.
|
||
|
<p> Note that deferred-write databases are automatically flushed to disk
|
||
|
when the <a href="../../../com/sleepycat/je/Database.html#close--"><code>close()</code></a> method is called.</div>
|
||
|
<dl>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/rep/DatabasePreemptedException.html" title="class in com.sleepycat.je.rep">DatabasePreemptedException</a></code> - in a replicated
|
||
|
environment if the master has truncated, removed or renamed the
|
||
|
database.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if this exception occurred earlier and
|
||
|
caused the transaction to be invalidated.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this is not a deferred-write
|
||
|
database, or this database is read-only.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dt><span class="seeLabel">See Also:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/DatabaseConfig.html#setDeferredWrite-boolean-"><code>DatabaseConfig.setDeferredWrite</code></a></dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="openSequence-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.SequenceConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>openSequence</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/Sequence.html" title="class in com.sleepycat.je">Sequence</a> openSequence(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/SequenceConfig.html" title="class in com.sleepycat.je">SequenceConfig</a> config)</pre>
|
||
|
<div class="block">Opens a sequence in the database.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may
|
||
|
be specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - The key <a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je"><code>DatabaseEntry</code></a> of the sequence.</dd>
|
||
|
<dd><code>config</code> - The sequence attributes. If null, default attributes are
|
||
|
used.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>a new Sequence handle.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/SequenceExistsException.html" title="class in com.sleepycat.je">SequenceExistsException</a></code> - if the sequence record already exists
|
||
|
and the <code>SequenceConfig ExclusiveCreate</code> parameter is true.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/SequenceNotFoundException.html" title="class in com.sleepycat.je">SequenceNotFoundException</a></code> - if the sequence record does not exist
|
||
|
and the <code>SequenceConfig AllowCreate</code> parameter is false.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs. If the sequence does not exist and the <a href="../../../com/sleepycat/je/SequenceConfig.html#setAllowCreate-boolean-"><code>AllowCreate</code></a> parameter is true, then one
|
||
|
of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> may also occur.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is read-only, or
|
||
|
this database is configured for duplicates.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the Sequence record is deleted by
|
||
|
another thread during this method invocation, or the database has been
|
||
|
closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified,
|
||
|
for example, an invalid <code>SequenceConfig</code> parameter.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="removeSequence-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>removeSequence</h4>
|
||
|
<pre>public void removeSequence(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key)</pre>
|
||
|
<div class="block">Removes the sequence from the database. This method should not be
|
||
|
called if there are open handles on this sequence.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - The key <a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je"><code>DatabaseEntry</code></a> of the sequence.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is read-only.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="openCursor-com.sleepycat.je.Transaction-com.sleepycat.je.CursorConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>openCursor</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/Cursor.html" title="class in com.sleepycat.je">Cursor</a> openCursor(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/CursorConfig.html" title="class in com.sleepycat.je">CursorConfig</a> cursorConfig)</pre>
|
||
|
<div class="block">Returns a cursor into the database.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - the transaction used to protect all operations performed with
|
||
|
the cursor, or null if the operations should not be transaction
|
||
|
protected. If the database is non-transactional, null must be
|
||
|
specified. For a transactional database, the transaction is optional
|
||
|
for read-only access and required for read-write access.</dd>
|
||
|
<dd><code>cursorConfig</code> - The cursor attributes. If null, default attributes
|
||
|
are used.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>A database cursor.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/rep/DatabasePreemptedException.html" title="class in com.sleepycat.je.rep">DatabasePreemptedException</a></code> - in a replicated
|
||
|
environment if the master has truncated, removed or renamed the
|
||
|
database.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if this exception occurred earlier and
|
||
|
caused the transaction to be invalidated.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified,
|
||
|
for example, an invalid <code>CursorConfig</code> parameter.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="openCursor-com.sleepycat.je.DiskOrderedCursorConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>openCursor</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/DiskOrderedCursor.html" title="class in com.sleepycat.je">DiskOrderedCursor</a> openCursor(<a href="../../../com/sleepycat/je/DiskOrderedCursorConfig.html" title="class in com.sleepycat.je">DiskOrderedCursorConfig</a> cursorConfig)</pre>
|
||
|
<div class="block">Create a DiskOrderedCursor to iterate over the records in 'this'
|
||
|
Database. Because the retrieval is based on Log Sequence Number (LSN)
|
||
|
order rather than key order, records are returned in unsorted order in
|
||
|
exchange for generally faster retrieval. LSN order approximates disk
|
||
|
sector order.
|
||
|
<p>
|
||
|
See <a href="../../../com/sleepycat/je/DiskOrderedCursor.html" title="class in com.sleepycat.je"><code>DiskOrderedCursor</code></a> for more details and a description of the
|
||
|
consistency guarantees provided by the scan.
|
||
|
<p>
|
||
|
<em>WARNING:</em> After calling this method, deletion of log files by
|
||
|
the JE log cleaner will be disabled until <a href="../../../com/sleepycat/je/DiskOrderedCursor.html#close--"><code>DiskOrderedCursor.close()</code></a> is called. To prevent unbounded growth of
|
||
|
disk usage, be sure to call <a href="../../../com/sleepycat/je/DiskOrderedCursor.html#close--"><code>DiskOrderedCursor.close()</code></a> to
|
||
|
re-enable log file deletion.</div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="delete-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.WriteOptions-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>delete</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationResult.html" title="class in com.sleepycat.je">OperationResult</a> delete(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/WriteOptions.html" title="class in com.sleepycat.je">WriteOptions</a> options)</pre>
|
||
|
<div class="block">Removes records with a given key from the database. In the presence of
|
||
|
duplicate keys, all records associated with the given key will be
|
||
|
removed. When the database has associated secondary databases, this
|
||
|
method also deletes the associated index records.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may
|
||
|
be specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dd><code>options</code> - the WriteOptions, or null to use default options.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the OperationResult if the record is deleted, else null if the
|
||
|
given key was not found in the database.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is read-only.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.
|
||
|
This includes passing a null input key parameter, an input key parameter
|
||
|
with a null data array, or a partial key input parameter.</dd>
|
||
|
<dt><span class="simpleTagLabel">Since:</span></dt>
|
||
|
<dd>7.0</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="delete-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>delete</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a> delete(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key)</pre>
|
||
|
<div class="block">Removes records with a given key from the database. In the presence of
|
||
|
duplicate keys, all records associated with the given key will be
|
||
|
removed. When the database has associated secondary databases, this
|
||
|
method also deletes the associated index records.
|
||
|
|
||
|
<p>Calling this method is equivalent to calling <a href="../../../com/sleepycat/je/Database.html#delete-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.WriteOptions-"><code>delete(Transaction, DatabaseEntry, WriteOptions)</code></a>.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may
|
||
|
be specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>The method will return <a href="../../../com/sleepycat/je/OperationStatus.html#NOTFOUND"><code>OperationStatus.NOTFOUND</code></a> if
|
||
|
the given key is not found in the database; otherwise <a href="../../../com/sleepycat/je/OperationStatus.html#SUCCESS"><code>OperationStatus.SUCCESS</code></a>.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is read-only.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.
|
||
|
This includes passing a null input key parameter, an input key parameter
|
||
|
with a null data array, or a partial key input parameter.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="get-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Get-com.sleepycat.je.ReadOptions-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>get</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationResult.html" title="class in com.sleepycat.je">OperationResult</a> get(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
|
<a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> getType,
|
||
|
<a href="../../../com/sleepycat/je/ReadOptions.html" title="class in com.sleepycat.je">ReadOptions</a> options)</pre>
|
||
|
<div class="block">Retrieves a record according to the specified <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je"><code>Get</code></a> type.
|
||
|
|
||
|
<p>If the operation succeeds, the record will be locked according to the
|
||
|
<a href="../../../com/sleepycat/je/ReadOptions.html#getLockMode--"><code>lock mode</code></a> specified, the key and/or
|
||
|
data will be returned via the (non-null) DatabaseEntry parameters, and a
|
||
|
non-null OperationResult will be returned. If the operation fails
|
||
|
because the record requested is not found, null is returned.</p>
|
||
|
|
||
|
<p>The following table lists each allowed operation and whether the key
|
||
|
and data parameters are <a href="DatabaseEntry.html#params">input or
|
||
|
output parameters</a>. See the individual <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je"><code>Get</code></a> operations for
|
||
|
more information.</p>
|
||
|
|
||
|
<div><table border="1" summary="">
|
||
|
<tr>
|
||
|
<th>Get operation</th>
|
||
|
<th>Description</th>
|
||
|
<th>'key' parameter</th>
|
||
|
<th>'data' parameter</th>
|
||
|
</tr>
|
||
|
<tr>
|
||
|
<td><a href="../../../com/sleepycat/je/Get.html#SEARCH"><code>Get.SEARCH</code></a></td>
|
||
|
<td>Searches using an exact match by key.</td>
|
||
|
<td><a href="DatabaseEntry.html#inParam">input</a></td>
|
||
|
<td><a href="DatabaseEntry.html#outParam">output</a></td>
|
||
|
</tr>
|
||
|
<tr>
|
||
|
<td><a href="../../../com/sleepycat/je/Get.html#SEARCH_BOTH"><code>Get.SEARCH_BOTH</code></a></td>
|
||
|
<td>Searches using an exact match by key and data.</td>
|
||
|
<td><a href="DatabaseEntry.html#inParam">input</a></td>
|
||
|
<td><a href="DatabaseEntry.html#inParam">input</a></td>
|
||
|
</tr>
|
||
|
</table></div></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified to transaction-protect the operation, or null may be specified
|
||
|
to perform the operation without transaction protection. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key input parameter.</dd>
|
||
|
<dd><code>data</code> - the data input or output parameter, depending on getType.</dd>
|
||
|
<dd><code>getType</code> - the Get operation type. May not be null.</dd>
|
||
|
<dd><code>options</code> - the ReadOptions, or null to use default options.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the OperationResult if the record requested is found, else null.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.
|
||
|
This includes passing a null getType, a null input key/data parameter,
|
||
|
an input key/data parameter with a null data array, and a partial
|
||
|
key/data input parameter.</dd>
|
||
|
<dt><span class="simpleTagLabel">Since:</span></dt>
|
||
|
<dd>7.0</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="get-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.LockMode-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>get</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a> get(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
|
<a href="../../../com/sleepycat/je/LockMode.html" title="enum in com.sleepycat.je">LockMode</a> lockMode)</pre>
|
||
|
<div class="block">Retrieves the key/data pair with the given key. If the matching key has
|
||
|
duplicate values, the first data item in the set of duplicates is
|
||
|
returned. Retrieval of duplicates requires the use of <a href="../../../com/sleepycat/je/Cursor.html" title="class in com.sleepycat.je"><code>Cursor</code></a>
|
||
|
operations.
|
||
|
|
||
|
<p>Calling this method is equivalent to calling <a href="../../../com/sleepycat/je/Database.html#get-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Get-com.sleepycat.je.ReadOptions-"><code>get(Transaction, DatabaseEntry, DatabaseEntry, Get, ReadOptions)</code></a> with
|
||
|
<a href="../../../com/sleepycat/je/Get.html#SEARCH"><code>Get.SEARCH</code></a>.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified to transaction-protect the operation, or null may be specified
|
||
|
to perform the operation without transaction protection. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dd><code>data</code> - the data returned as
|
||
|
<a href="DatabaseEntry.html#outParam">output</a>.</dd>
|
||
|
<dd><code>lockMode</code> - the locking attributes; if null, default attributes are
|
||
|
used.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/OperationStatus.html#NOTFOUND"><code>OperationStatus.NOTFOUND</code></a> if no matching key/data pair is found;
|
||
|
otherwise, <a href="../../../com/sleepycat/je/OperationStatus.html#SUCCESS"><code>OperationStatus.SUCCESS</code></a>.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="getSearchBoth-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.LockMode-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>getSearchBoth</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a> getSearchBoth(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
|
<a href="../../../com/sleepycat/je/LockMode.html" title="enum in com.sleepycat.je">LockMode</a> lockMode)</pre>
|
||
|
<div class="block">Retrieves the key/data pair with the given key and data value, that is,
|
||
|
both the key and data items must match.
|
||
|
|
||
|
<p>Calling this method is equivalent to calling <a href="../../../com/sleepycat/je/Database.html#get-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Get-com.sleepycat.je.ReadOptions-"><code>get(Transaction, DatabaseEntry, DatabaseEntry, Get, ReadOptions)</code></a> with
|
||
|
<a href="../../../com/sleepycat/je/Get.html#SEARCH_BOTH"><code>Get.SEARCH_BOTH</code></a>.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified to transaction-protect the operation, or null may be specified
|
||
|
to perform the operation without transaction protection. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dd><code>data</code> - the data used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dd><code>lockMode</code> - the locking attributes; if null, default attributes are
|
||
|
used.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/OperationStatus.html#NOTFOUND"><code>OperationStatus.NOTFOUND</code></a> if no matching key/data pair is found;
|
||
|
otherwise, <a href="../../../com/sleepycat/je/OperationStatus.html#SUCCESS"><code>OperationStatus.SUCCESS</code></a>.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Put-com.sleepycat.je.WriteOptions-">
|
||
|
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|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>put</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationResult.html" title="class in com.sleepycat.je">OperationResult</a> put(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data,
|
||
|
<a href="../../../com/sleepycat/je/Put.html" title="enum in com.sleepycat.je">Put</a> putType,
|
||
|
<a href="../../../com/sleepycat/je/WriteOptions.html" title="class in com.sleepycat.je">WriteOptions</a> options)</pre>
|
||
|
<div class="block">Inserts or updates a record according to the specified <a href="../../../com/sleepycat/je/Put.html" title="enum in com.sleepycat.je"><code>Put</code></a>
|
||
|
type.
|
||
|
|
||
|
<p>If the operation succeeds, the record will be locked according to the
|
||
|
<a href="../../../com/sleepycat/je/ReadOptions.html#getLockMode--"><code>lock mode</code></a> specified, the cursor will
|
||
|
be positioned on the record, and a non-null OperationResult will be
|
||
|
returned. If the operation fails because the record already exists (or
|
||
|
does not exist, depending on the putType), null is returned.</p>
|
||
|
|
||
|
<p>When the database has associated secondary databases, this method
|
||
|
also inserts or deletes associated index records as necessary.</p>
|
||
|
|
||
|
<p>The following table lists each allowed operation. See the individual
|
||
|
<a href="../../../com/sleepycat/je/Put.html" title="enum in com.sleepycat.je"><code>Put</code></a> operations for more information.</p>
|
||
|
|
||
|
<div><table border="1" summary="">
|
||
|
<tr>
|
||
|
<th>Put operation</th>
|
||
|
<th>Description</th>
|
||
|
<th>Returns null when?</th>
|
||
|
<th>Other special rules</th>
|
||
|
</tr>
|
||
|
<tr>
|
||
|
<td><a href="../../../com/sleepycat/je/Put.html#OVERWRITE"><code>Put.OVERWRITE</code></a></td>
|
||
|
<td>Inserts or updates a record depending on whether a matching
|
||
|
record is already present.</td>
|
||
|
<td>Never returns null.</td>
|
||
|
<td>Without duplicates, a matching record is one with the same key;
|
||
|
with duplicates, it is one with the same key and data.</td>
|
||
|
</tr>
|
||
|
<tr>
|
||
|
<td><a href="../../../com/sleepycat/je/Put.html#NO_OVERWRITE"><code>Put.NO_OVERWRITE</code></a></td>
|
||
|
<td>Inserts a record if a record with a matching key is not already
|
||
|
present.</td>
|
||
|
<td>When an existing record matches.</td>
|
||
|
<td>If the database has duplicate keys, a record is inserted only if
|
||
|
there are no records with a matching key.</td>
|
||
|
</tr>
|
||
|
<tr>
|
||
|
<td><a href="../../../com/sleepycat/je/Put.html#NO_DUP_DATA"><code>Put.NO_DUP_DATA</code></a></td>
|
||
|
<td>Inserts a record in a database with duplicate keys if a record
|
||
|
with a matching key and data is not already present.</td>
|
||
|
<td>When an existing record matches.</td>
|
||
|
<td>Without duplicates, this operation is not allowed.</td>
|
||
|
</tr>
|
||
|
</table></div></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dd><code>data</code> - the data used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dd><code>putType</code> - the Put operation type. May not be null.</dd>
|
||
|
<dd><code>options</code> - the WriteOptions, or null to use default options.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the OperationResult if the record is written, else null.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if the database is read-only, or
|
||
|
putType is Put.NO_DUP_DATA and the database is not configured for
|
||
|
duplicates.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.
|
||
|
This includes passing a null putType, a null input key/data parameter,
|
||
|
an input key/data parameter with a null data array, a partial key/data
|
||
|
input parameter, or when putType is Put.CURRENT.</dd>
|
||
|
<dt><span class="simpleTagLabel">Since:</span></dt>
|
||
|
<dd>7.0</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>put</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a> put(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data)</pre>
|
||
|
<div class="block">Stores the key/data pair into the database.
|
||
|
|
||
|
<p>Calling this method is equivalent to calling <a href="../../../com/sleepycat/je/Database.html#put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Put-com.sleepycat.je.WriteOptions-"><code>put(Transaction, DatabaseEntry, DatabaseEntry, Put, WriteOptions)</code></a> with
|
||
|
<a href="../../../com/sleepycat/je/Put.html#OVERWRITE"><code>Put.OVERWRITE</code></a>.</p>
|
||
|
|
||
|
<p>If the key already appears in the database and duplicates are not
|
||
|
configured, the data associated with the key will be replaced. If the
|
||
|
key already appears in the database and sorted duplicates are
|
||
|
configured, the new data value is inserted at the correct sorted
|
||
|
location.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>..</dd>
|
||
|
<dd><code>data</code> - the data used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/OperationStatus.html#SUCCESS"><code>OperationStatus.SUCCESS</code></a>.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is read-only.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="putNoOverwrite-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>putNoOverwrite</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a> putNoOverwrite(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data)</pre>
|
||
|
<div class="block">Stores the key/data pair into the database if the key does not already
|
||
|
appear in the database.
|
||
|
|
||
|
<p>Calling this method is equivalent to calling <a href="../../../com/sleepycat/je/Database.html#put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Put-com.sleepycat.je.WriteOptions-"><code>put(Transaction, DatabaseEntry, DatabaseEntry, Put, WriteOptions)</code></a> with
|
||
|
<a href="../../../com/sleepycat/je/Put.html#NO_OVERWRITE"><code>Put.NO_OVERWRITE</code></a>.</p>
|
||
|
|
||
|
<p>This method will return <a href="../../../com/sleepycat/je/OperationStatus.html#KEYEXIST"><code>OpeationStatus.KEYEXIST</code></a> if
|
||
|
the key already exists in the database, even if the database supports
|
||
|
duplicates.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>..</dd>
|
||
|
<dd><code>data</code> - the data used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/OperationStatus.html#KEYEXIST"><code>OperationStatus.KEYEXIST</code></a> if the key already appears in the database,
|
||
|
else <a href="../../../com/sleepycat/je/OperationStatus.html#SUCCESS"><code>OperationStatus.SUCCESS</code></a></dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is read-only.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="putNoDupData-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>putNoDupData</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/OperationStatus.html" title="enum in com.sleepycat.je">OperationStatus</a> putNoDupData(<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a> txn,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> key,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> data)</pre>
|
||
|
<div class="block">Stores the key/data pair into the database if it does not already appear
|
||
|
in the database.
|
||
|
|
||
|
<p>Calling this method is equivalent to calling <a href="../../../com/sleepycat/je/Database.html#put-com.sleepycat.je.Transaction-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.Put-com.sleepycat.je.WriteOptions-"><code>put(Transaction, DatabaseEntry, DatabaseEntry, Put, WriteOptions)</code></a> with
|
||
|
<a href="../../../com/sleepycat/je/Put.html#NO_DUP_DATA"><code>Put.NO_DUP_DATA</code></a>.</p>
|
||
|
|
||
|
<p>This method may only be called if the underlying database has been
|
||
|
configured to support sorted duplicates.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>txn</code> - For a transactional database, an explicit transaction may be
|
||
|
specified, or null may be specified to use auto-commit. For a
|
||
|
non-transactional database, null must be specified.</dd>
|
||
|
<dd><code>key</code> - the key used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>..</dd>
|
||
|
<dd><code>data</code> - the data used as
|
||
|
<a href="DatabaseEntry.html#inParam">input</a>.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/OperationStatus.html#KEYEXIST"><code>OperationStatus.KEYEXIST</code></a> if the key/data pair already appears in the
|
||
|
database, else <a href="../../../com/sleepycat/je/OperationStatus.html#SUCCESS"><code>OperationStatus.SUCCESS</code></a></dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="../je/OperationFailureException.html#writeFailures">Write
|
||
|
Operation Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.UnsupportedOperationException</code> - if this database is not configured
|
||
|
for duplicates, or this database is read-only.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="join-com.sleepycat.je.Cursor:A-com.sleepycat.je.JoinConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>join</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/JoinCursor.html" title="class in com.sleepycat.je">JoinCursor</a> join(<a href="../../../com/sleepycat/je/Cursor.html" title="class in com.sleepycat.je">Cursor</a>[] cursors,
|
||
|
<a href="../../../com/sleepycat/je/JoinConfig.html" title="class in com.sleepycat.je">JoinConfig</a> config)</pre>
|
||
|
<div class="block">Creates a specialized join cursor for use in performing equality or
|
||
|
natural joins on secondary indices.
|
||
|
|
||
|
<p>Each cursor in the <code>cursors</code> array must have been
|
||
|
initialized to refer to the key on which the underlying database should
|
||
|
be joined. Typically, this initialization is done by calling <a href="../../../com/sleepycat/je/Cursor.html#getSearchKey-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.LockMode-"><code>Cursor.getSearchKey</code></a>.</p>
|
||
|
|
||
|
<p>Once the cursors have been passed to this method, they should not be
|
||
|
accessed or modified until the newly created join cursor has been
|
||
|
closed, or else inconsistent results may be returned. However, the
|
||
|
position of the cursors will not be changed by this method or by the
|
||
|
methods of the join cursor.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>cursors</code> - an array of cursors associated with this primary
|
||
|
database.</dd>
|
||
|
<dd><code>config</code> - The join attributes. If null, default attributes are
|
||
|
used.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>a specialized cursor that returns the results of the equality
|
||
|
join operation.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified,
|
||
|
for example, an invalid <code>JoinConfig</code> parameter.</dd>
|
||
|
<dt><span class="seeLabel">See Also:</span></dt>
|
||
|
<dd><a href="../../../com/sleepycat/je/JoinCursor.html" title="class in com.sleepycat.je"><code>JoinCursor</code></a></dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="preload-long-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>preload</h4>
|
||
|
<pre>public void preload(long maxBytes)</pre>
|
||
|
<div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">As of JE 2.0.83, replaced by <a href="../../../com/sleepycat/je/Database.html#preload-com.sleepycat.je.PreloadConfig-"><code>preload(PreloadConfig)</code></a>.</p></span></div>
|
||
|
<div class="block">Preloads the cache. This method should only be called when there are no
|
||
|
operations being performed on the database in other threads. Executing
|
||
|
preload during concurrent updates may result in some or all of the tree
|
||
|
being loaded into the JE cache. Executing preload during any other
|
||
|
types of operations may result in JE exceeding its allocated cache
|
||
|
size. preload() effectively locks the entire database and therefore will
|
||
|
lock out the checkpointer, cleaner, and compressor, as well as not allow
|
||
|
eviction to occur.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>maxBytes</code> - The maximum number of bytes to load. If maxBytes is 0,
|
||
|
je.evictor.maxMemory is used.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="preload-long-long-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>preload</h4>
|
||
|
<pre>public void preload(long maxBytes,
|
||
|
long maxMillisecs)</pre>
|
||
|
<div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">As of JE 2.0.101, replaced by <a href="../../../com/sleepycat/je/Database.html#preload-com.sleepycat.je.PreloadConfig-"><code>preload(PreloadConfig)</code></a>.</p></span></div>
|
||
|
<div class="block">Preloads the cache. This method should only be called when there are no
|
||
|
operations being performed on the database in other threads. Executing
|
||
|
preload during concurrent updates may result in some or all of the tree
|
||
|
being loaded into the JE cache. Executing preload during any other
|
||
|
types of operations may result in JE exceeding its allocated cache
|
||
|
size. preload() effectively locks the entire database and therefore will
|
||
|
lock out the checkpointer, cleaner, and compressor, as well as not allow
|
||
|
eviction to occur.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>maxBytes</code> - The maximum number of bytes to load. If maxBytes is 0,
|
||
|
je.evictor.maxMemory is used.</dd>
|
||
|
<dd><code>maxMillisecs</code> - The maximum time in milliseconds to use when
|
||
|
preloading. Preloading stops once this limit has been reached. If
|
||
|
maxMillisecs is 0, preloading can go on indefinitely or until maxBytes
|
||
|
(if non-0) is reached.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="preload-com.sleepycat.je.PreloadConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>preload</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/PreloadStats.html" title="class in com.sleepycat.je">PreloadStats</a> preload(<a href="../../../com/sleepycat/je/PreloadConfig.html" title="class in com.sleepycat.je">PreloadConfig</a> config)</pre>
|
||
|
<div class="block">Preloads the cache. This method should only be called when there are no
|
||
|
operations being performed on the database in other threads. Executing
|
||
|
preload during concurrent updates may result in some or all of the tree
|
||
|
being loaded into the JE cache. Executing preload during any other
|
||
|
types of operations may result in JE exceeding its allocated cache
|
||
|
size. preload() effectively locks the entire database and therefore will
|
||
|
lock out the checkpointer, cleaner, and compressor, as well as not allow
|
||
|
eviction to occur. If the database is replicated and the environment is
|
||
|
in the replica state, then the replica may become temporarily
|
||
|
disconnected from the master if the replica needs to replay changes
|
||
|
against the database and is locked out because the time taken by the
|
||
|
preload operation exceeds <a href="../../../com/sleepycat/je/rep/ReplicationConfig.html#FEEDER_TIMEOUT"><code>ReplicationConfig.FEEDER_TIMEOUT</code></a>.
|
||
|
<p>
|
||
|
While this method preloads a single database, <a href="../../../com/sleepycat/je/Environment.html#preload-com.sleepycat.je.Database:A-com.sleepycat.je.PreloadConfig-"><code>Environment.preload(com.sleepycat.je.Database[], com.sleepycat.je.PreloadConfig)</code></a> lets you preload multiple databases.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>config</code> - The PreloadConfig object that specifies the parameters
|
||
|
of the preload.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>A PreloadStats object with various statistics about the
|
||
|
preload() operation.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if <code>PreloadConfig.getMaxBytes</code> is
|
||
|
greater than size of the JE cache.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="count--">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>count</h4>
|
||
|
<pre>public long count()</pre>
|
||
|
<div class="block">Counts the key/data pairs in the database. This operation is faster than
|
||
|
obtaining a count from a cursor based scan of the database, and will not
|
||
|
perturb the current contents of the cache. However, the count is not
|
||
|
guaranteed to be accurate if there are concurrent updates. Note that
|
||
|
this method does scan a significant portion of the database and should
|
||
|
be considered a fairly expensive operation.
|
||
|
<p>
|
||
|
This operation uses the an internal infrastructure and algorithm that is
|
||
|
similar to the one used for the <a href="../../../com/sleepycat/je/DiskOrderedCursor.html" title="class in com.sleepycat.je"><code>DiskOrderedCursor</code></a>. Specifically,
|
||
|
it will disable deletion of log files by the JE log cleaner during its
|
||
|
execution and will consume a certain amount of memory (but without
|
||
|
affecting the memory that is available for the JE cache). To avoid
|
||
|
excessive memory consumption (and a potential <code>OutOfMemoryError</code>)
|
||
|
this method places an internal limit on its memory consumption. If this
|
||
|
limit is reached, the method will still work properly, but its
|
||
|
performance will degrade. To specify a different memory limit than the
|
||
|
one used by this method, use the
|
||
|
<a href="../../../com/sleepycat/je/Database.html#count-long-"><code>count(long memoryLimit)</code></a> method.
|
||
|
<p>
|
||
|
Currently, the internal memory limit is calculated as 10% of the
|
||
|
difference between the max JVM memory (the value returned by
|
||
|
Runtime.getRuntime().maxMemory()) and the configured JE cache size.</div>
|
||
|
<dl>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>The count of key/data pairs in the database.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dt><span class="seeLabel">See Also:</span></dt>
|
||
|
<dd><a href="EnvironmentStats.html#cacheUnexpectedSizes">Cache
|
||
|
Statistics: Unexpected Sizes</a></dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="count-long-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>count</h4>
|
||
|
<pre>public long count(long memoryLimit)</pre>
|
||
|
<div class="block">Counts the key/data pairs in the database. This operation is faster than
|
||
|
obtaining a count from a cursor based scan of the database, and will not
|
||
|
perturb the current contents of the cache. However, the count is not
|
||
|
guaranteed to be accurate if there are concurrent updates. Note that
|
||
|
this method does scan a significant portion of the database and should
|
||
|
be considered a fairly expensive operation.
|
||
|
<p>
|
||
|
This operation uses the an internal infrastructure and algorithm that is
|
||
|
similar to the one used for the <a href="../../../com/sleepycat/je/DiskOrderedCursor.html" title="class in com.sleepycat.je"><code>DiskOrderedCursor</code></a>. Specifically,
|
||
|
it will disable deletion of log files by the JE log cleaner during its
|
||
|
execution and will consume a certain amount of memory (but without
|
||
|
affecting the memory that is available for the JE cache). To avoid
|
||
|
excessive memory consumption (and a potential <code>OutOfMemoryError</code>)
|
||
|
this method takes as input an upper bound on the memory it may consume.
|
||
|
If this limit is reached, the method will still work properly, but its
|
||
|
performance will degrade.</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>memoryLimit</code> - The maximum memory (in bytes) that may be consumed
|
||
|
by this method.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>The count of key/data pairs in the database.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dt><span class="seeLabel">See Also:</span></dt>
|
||
|
<dd><a href="EnvironmentStats.html#cacheUnexpectedSizes">Cache
|
||
|
Statistics: Unexpected Sizes</a></dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="getStats-com.sleepycat.je.StatsConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>getStats</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/DatabaseStats.html" title="class in com.sleepycat.je">DatabaseStats</a> getStats(<a href="../../../com/sleepycat/je/StatsConfig.html" title="class in com.sleepycat.je">StatsConfig</a> config)</pre>
|
||
|
<div class="block">Returns database statistics.
|
||
|
|
||
|
<p>If this method has not been configured to avoid expensive operations
|
||
|
(using the <a href="../../../com/sleepycat/je/StatsConfig.html#setFast-boolean-"><code>StatsConfig.setFast</code></a> method), it will access some of or all the pages in
|
||
|
the database, incurring a severe performance penalty as well as possibly
|
||
|
flushing the underlying cache.</p>
|
||
|
|
||
|
<p>In the presence of multiple threads or processes accessing an active
|
||
|
database, the information returned by this method may be
|
||
|
out-of-date.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>config</code> - The statistics returned; if null, default statistics are
|
||
|
returned.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>Database statistics.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="verify-com.sleepycat.je.VerifyConfig-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>verify</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/DatabaseStats.html" title="class in com.sleepycat.je">DatabaseStats</a> verify(<a href="../../../com/sleepycat/je/VerifyConfig.html" title="class in com.sleepycat.je">VerifyConfig</a> config)</pre>
|
||
|
<div class="block">Verifies the integrity of the database.
|
||
|
|
||
|
<p>Verification is an expensive operation that should normally only be
|
||
|
used for troubleshooting and debugging.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>config</code> - Configures the verify operation; if null, the default
|
||
|
operation is performed.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>Database statistics.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if one of the <a
|
||
|
href="OperationFailureException.html#readFailures">Read Operation
|
||
|
Failures</a> occurs.</dd>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if a corruption is detected, or if
|
||
|
an unexpected, internal or environment-wide failure occurs. If a
|
||
|
persistent corruption is detected,
|
||
|
<a href="../../../com/sleepycat/je/EnvironmentFailureException.html#isCorrupted--"><code>EnvironmentFailureException.isCorrupted()</code></a> will return true.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if an invalid parameter is specified.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="getDatabaseName--">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>getDatabaseName</h4>
|
||
|
<pre>public java.lang.String getDatabaseName()</pre>
|
||
|
<div class="block">Returns the database name.
|
||
|
|
||
|
<p>This method may be called at any time during the life of the
|
||
|
application.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>The database name.</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="getConfig--">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>getConfig</h4>
|
||
|
<pre>public <a href="../../../com/sleepycat/je/DatabaseConfig.html" title="class in com.sleepycat.je">DatabaseConfig</a> getConfig()</pre>
|
||
|
<div class="block">Returns this Database object's configuration.
|
||
|
|
||
|
<p>This may differ from the configuration used to open this object if
|
||
|
the database existed previously.</p>
|
||
|
|
||
|
<p>Unlike most Database methods, this method may be called after the
|
||
|
database is closed.</p></div>
|
||
|
<dl>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>This Database object's configuration.</dd>
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<dt><span class="throwsLabel">Throws:</span></dt>
|
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|
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
|
||
|
environment-wide failure occurs.</dd>
|
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|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
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</dl>
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</li>
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</ul>
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<a name="getEnvironment--">
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<ul class="blockList">
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<h4>getEnvironment</h4>
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<pre>public <a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a> getEnvironment()</pre>
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<div class="block">Returns the <a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je"><code>Environment</code></a> handle for
|
||
|
the database environment underlying the <a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>.
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|
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<p>This method may be called at any time during the life of the
|
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|
application.</p></div>
|
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
|
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|
<dd>The <a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je"><code>Environment</code></a> handle
|
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for the database environment underlying the <a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>.</dd>
|
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</dl>
|
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</li>
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</ul>
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<a name="getSecondaryDatabases--">
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</a>
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<ul class="blockList">
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<h4>getSecondaryDatabases</h4>
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<pre>public java.util.List<<a href="../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je">SecondaryDatabase</a>> getSecondaryDatabases()</pre>
|
||
|
<div class="block">Returns a list of all <a href="../../../com/sleepycat/je/SecondaryDatabase.html" title="class in com.sleepycat.je"><code>SecondaryDatabase</code></a> objects associated with a primary database.
|
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|
|
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<p>If no secondaries are associated with this database, an empty list is
|
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returned.</p></div>
|
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</li>
|
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</ul>
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<a name="compareKeys-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">
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</a>
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<ul class="blockList">
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<li class="blockList">
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<h4>compareKeys</h4>
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<pre>public int compareKeys(<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry1,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry2)</pre>
|
||
|
<div class="block">Compares two keys using either the default comparator if no BTree
|
||
|
comparator has been set or the BTree comparator if one has been set.</div>
|
||
|
<dl>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>-1 if entry1 compares less than entry2,
|
||
|
0 if entry1 compares equal to entry2,
|
||
|
1 if entry1 compares greater than entry2</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if either entry is a partial
|
||
|
DatabaseEntry, or is null.</dd>
|
||
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</dl>
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</li>
|
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</ul>
|
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<a name="compareDuplicates-com.sleepycat.je.DatabaseEntry-com.sleepycat.je.DatabaseEntry-">
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<!-- -->
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</a>
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<ul class="blockListLast">
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<li class="blockList">
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<h4>compareDuplicates</h4>
|
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<pre>public int compareDuplicates(<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry1,
|
||
|
<a href="../../../com/sleepycat/je/DatabaseEntry.html" title="class in com.sleepycat.je">DatabaseEntry</a> entry2)</pre>
|
||
|
<div class="block">Compares two data elements using either the default comparator if no
|
||
|
duplicate comparator has been set or the duplicate comparator if one has
|
||
|
been set.</div>
|
||
|
<dl>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>-1 if entry1 compares less than entry2,
|
||
|
0 if entry1 compares equal to entry2,
|
||
|
1 if entry1 compares greater than entry2</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code>java.lang.IllegalStateException</code> - if the database has been closed.</dd>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if either entry is a partial
|
||
|
DatabaseEntry, or is null.</dd>
|
||
|
</dl>
|
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</li>
|
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</ul>
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