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690 lines
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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>Get (Oracle - Berkeley DB Java Edition API)</title>
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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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<div class="subTitle">com.sleepycat.je</div>
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<h2 title="Enum Get" class="title">Enum Get</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>java.lang.Enum<<a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a>></li>
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<li>
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<ul class="inheritance">
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<li>com.sleepycat.je.Get</li>
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<dl>
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<dt>All Implemented Interfaces:</dt>
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<dd>java.io.Serializable, java.lang.Comparable<<a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a>></dd>
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</dl>
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<hr>
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<br>
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<pre>public enum <span class="typeNameLabel">Get</span>
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extends java.lang.Enum<<a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a>></pre>
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<div class="block">The operation type passed to "get" methods on databases and cursors.</div>
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<div class="summary">
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<!-- =========== ENUM CONSTANT SUMMARY =========== -->
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<li class="blockList"><a name="enum.constant.summary">
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<h3>Enum Constant Summary</h3>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Constant Summary table, listing enum constants, and an explanation">
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<caption><span>Enum Constants</span><span class="tabEnd"> </span></caption>
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<tr>
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<th class="colOne" scope="col">Enum Constant and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#CURRENT">CURRENT</a></span></code>
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<div class="block">Accesses the current record.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#FIRST">FIRST</a></span></code>
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<div class="block">Finds the first record in the database.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#LAST">LAST</a></span></code>
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<div class="block">Finds the last record in the database.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#NEXT">NEXT</a></span></code>
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<div class="block">Moves to the next record.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#NEXT_DUP">NEXT_DUP</a></span></code>
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<div class="block">Moves to the next record with the same key.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#NEXT_NO_DUP">NEXT_NO_DUP</a></span></code>
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<div class="block">Moves to the next record with a different key.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#PREV">PREV</a></span></code>
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<div class="block">Moves to the previous record.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#PREV_DUP">PREV_DUP</a></span></code>
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<div class="block">Moves to the previous record with the same key.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#PREV_NO_DUP">PREV_NO_DUP</a></span></code>
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<div class="block">Moves to the previous record with a different key.</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#SEARCH">SEARCH</a></span></code>
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<div class="block">Searches using an exact match by key.</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#SEARCH_BOTH">SEARCH_BOTH</a></span></code>
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<div class="block">Searches using an exact match by key and data (or pKey).</div>
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</td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#SEARCH_BOTH_GTE">SEARCH_BOTH_GTE</a></span></code>
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<div class="block">Searches using an exact match by key and a GTE match by data (or pKey).</div>
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</td>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#SEARCH_GTE">SEARCH_GTE</a></span></code>
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<div class="block">Searches using a GTE match by key.</div>
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</td>
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</tr>
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</table>
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</li>
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</ul>
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<!-- ========== METHOD SUMMARY =========== -->
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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="t1" class="tableTab"><span><a href="javascript:show(1);">Static 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></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 id="i0" class="altColor">
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<td class="colFirst"><code>static <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#valueOf-java.lang.String-">valueOf</a></span>(java.lang.String name)</code>
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<div class="block">Returns the enum constant of this type with the specified name.</div>
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</td>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code>static <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a>[]</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/Get.html#values--">values</a></span>()</code>
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<div class="block">Returns an array containing the constants of this enum type, in
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the order they are declared.</div>
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</td>
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<h3>Methods inherited from class java.lang.Enum</h3>
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<code>clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf</code></li>
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<h3>Methods inherited from class java.lang.Object</h3>
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<code>getClass, notify, notifyAll, wait, wait, wait</code></li>
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</ul>
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<div class="details">
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<h3>Enum Constant Detail</h3>
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<a name="SEARCH">
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<h4>SEARCH</h4>
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> SEARCH</pre>
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<div class="block">Searches using an exact match by key.
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<p>Returns, or moves the cursor to, the record having a key exactly
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matching the given key parameter.</p>
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<p>If the database has duplicate keys, the record with the matching key
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and lowest data value (or the lowest primary key, for secondary
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databases) is selected.</p>
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<p>The operation does not succeed if no record matches.</p></div>
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</li>
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</ul>
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<a name="SEARCH_BOTH">
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<h4>SEARCH_BOTH</h4>
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> SEARCH_BOTH</pre>
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<div class="block">Searches using an exact match by key and data (or pKey).
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<p>Returns, or moves the cursor to, the record having a key exactly
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matching the given key parameter, and having a data value (or primary
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key) exactly matching the given data (or pKey) parameter. The data is
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matched for Database and Cursor operations, while the primary key is
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matched for SecondaryDatabase and SecondaryCursor operations.</p>
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<p>If the database has duplicate keys, the search is performed by key
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and data (or pKey) using the database Btree. If the database has does
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not have duplicate keys, the search is performed by key alone using the
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Btree, and then the data (or primary key) of the matching record is
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simply compared to the data (pKey) parameter. In other words, using
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this operation has no performance advantage over <a href="../../../com/sleepycat/je/Get.html#SEARCH"><code>SEARCH</code></a> when
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the database does not have duplicates.</p>
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<p>The operation does not succeed (null is returned) if no record
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matches.</p></div>
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</li>
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</ul>
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<a name="SEARCH_GTE">
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<h4>SEARCH_GTE</h4>
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> SEARCH_GTE</pre>
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<div class="block">Searches using a GTE match by key.
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<p>Returns, or moves the cursor to, the record with a key that is
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greater than or equal to (GTE) the given key parameter.</p>
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<p>If the database has duplicate keys, the record with the lowest data
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value (or the lowest primary key, for a secondary database) is selected
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among the duplicates with the matching key.</p>
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<p>The operation does not succeed (null is returned) if no record
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matches.</p></div>
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</li>
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</ul>
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<a name="SEARCH_BOTH_GTE">
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<h4>SEARCH_BOTH_GTE</h4>
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> SEARCH_BOTH_GTE</pre>
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<div class="block">Searches using an exact match by key and a GTE match by data (or pKey).
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<p>Returns, or moves the cursor to, the record with a key exactly
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matching the given key parameter, and having a data value (or primary
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key) that is greater than or equal to (GTE) the given data (or pKey)
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parameter. The data is matched for Database and Cursor operations, while
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the primary key is matched for SecondaryDatabase and SecondaryCursor
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operations.</p>
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<p>If the database does not have duplicate keys, the data (or pKey) is
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matched exactly and this operation is equivalent to <a href="../../../com/sleepycat/je/Get.html#SEARCH_BOTH"><code>SEARCH_BOTH</code></a>.</p>
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<p>The operation does not succeed (null is returned) if no record
|
||
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matches.</p></div>
|
||
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</li>
|
||
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</ul>
|
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<a name="CURRENT">
|
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<h4>CURRENT</h4>
|
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> CURRENT</pre>
|
||
|
<div class="block">Accesses the current record.
|
||
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|
||
|
<p>Accesses the record at the current cursor position. If the cursor is
|
||
|
uninitialized (not positioned on a record), <code>IllegalStateException</code> is thrown.</p>
|
||
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|
||
|
<p>The operation does not succeed (null is returned) if the record at
|
||
|
the current position has been deleted. This can occur in two cases: 1.
|
||
|
If the record was deleted using this cursor and then accessed. 2. If the
|
||
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record was not locked by this cursor or transaction, and was deleted by
|
||
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another thread or transaction after this cursor was positioned on
|
||
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it.</p></div>
|
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</li>
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</ul>
|
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<a name="FIRST">
|
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<h4>FIRST</h4>
|
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> FIRST</pre>
|
||
|
<div class="block">Finds the first record in the database.
|
||
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|
||
|
<p>Moves the cursor to the record in the database with the lowest valued
|
||
|
key.</p>
|
||
|
|
||
|
<p>If the database has duplicate keys, the record with the lowest data
|
||
|
value (or the lowest primary key, for a secondary database) is selected
|
||
|
among the duplicates for the lowest key.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if the database is
|
||
|
empty.</p></div>
|
||
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</li>
|
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</ul>
|
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<a name="LAST">
|
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<h4>LAST</h4>
|
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> LAST</pre>
|
||
|
<div class="block">Finds the last record in the database.
|
||
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|
||
|
<p>Moves the cursor to the record in the database with the highest
|
||
|
valued key.</p>
|
||
|
|
||
|
<p>If the database has duplicate keys, the record with the highest data
|
||
|
value (or the highest primary key, for a secondary database) is selected
|
||
|
among the duplicates for the highest key.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if the database is
|
||
|
empty.</p></div>
|
||
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</li>
|
||
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</ul>
|
||
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<a name="NEXT">
|
||
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|
||
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|
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|
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<h4>NEXT</h4>
|
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> NEXT</pre>
|
||
|
<div class="block">Moves to the next record.
|
||
|
|
||
|
<p>Moves the cursor to the record following the record at the current
|
||
|
cursor position. If the cursor is uninitialized (not positioned on a
|
||
|
record), moves to the first record and this operation is equivalent to
|
||
|
<a href="../../../com/sleepycat/je/Get.html#FIRST"><code>FIRST</code></a>.</p>
|
||
|
|
||
|
<p>If the database does not have duplicate keys, the following record is
|
||
|
defined as the record with the next highest key. If the database does
|
||
|
have duplicate keys, the following record is defined as the record with
|
||
|
the same key and the next highest data value (or the next highest
|
||
|
primary key, for a secondary database) among the duplicates for that
|
||
|
key; or if there are no more records with the same key, the following
|
||
|
record is the record with the next highest key and the lowest data value
|
||
|
(or the lowest primary key, for a secondary database) among the
|
||
|
duplicates for that key.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if the record at
|
||
|
the cursor position is the last record in the database.</p></div>
|
||
|
</li>
|
||
|
</ul>
|
||
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<a name="NEXT_DUP">
|
||
|
<!-- -->
|
||
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</a>
|
||
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<ul class="blockList">
|
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<li class="blockList">
|
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<h4>NEXT_DUP</h4>
|
||
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<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> NEXT_DUP</pre>
|
||
|
<div class="block">Moves to the next record with the same key.
|
||
|
|
||
|
<p>Moves the cursor to the record following the record at the current
|
||
|
cursor position and having the same key. If the cursor is uninitialized
|
||
|
(not positioned on a record), <code>IllegalStateException</code> is
|
||
|
thrown.</p>
|
||
|
|
||
|
<p>If the database has duplicate keys, moves to the record with the same
|
||
|
key and the next highest data value (or the next highest primary key,
|
||
|
for a secondary database) among the duplicates for that key.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if there are no
|
||
|
following records with the same key. This is always the case when
|
||
|
database does not have duplicate keys.</p></div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="NEXT_NO_DUP">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
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<h4>NEXT_NO_DUP</h4>
|
||
|
<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> NEXT_NO_DUP</pre>
|
||
|
<div class="block">Moves to the next record with a different key.
|
||
|
|
||
|
<p>Moves the cursor to the record following the record at the current
|
||
|
cursor position and having the next highest key. If the cursor is
|
||
|
uninitialized (not positioned on a record), moves to the first record
|
||
|
and this operation is equivalent to <a href="../../../com/sleepycat/je/Get.html#FIRST"><code>FIRST</code></a>.</p>
|
||
|
|
||
|
<p>If the database has duplicate keys, moves to the record with the next
|
||
|
highest key and the lowest data value (or the lowest primary key, for a
|
||
|
secondary database) among the duplicates for that key; this effectively
|
||
|
skips over records having the same key and a higher data value (or a
|
||
|
higher primary key, for a secondary database). If the database does not
|
||
|
have duplicate keys, this operation is equivalent to <a href="../../../com/sleepycat/je/Get.html#NEXT"><code>NEXT</code></a>.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if there are no
|
||
|
following records with a different key.</p></div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="PREV">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
|
<h4>PREV</h4>
|
||
|
<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> PREV</pre>
|
||
|
<div class="block">Moves to the previous record.
|
||
|
|
||
|
<p>Moves the cursor to the record preceding the record at the current
|
||
|
cursor position. If the cursor is uninitialized (not positioned on a
|
||
|
record), moves to the last record and this operation is equivalent to
|
||
|
<a href="../../../com/sleepycat/je/Get.html#LAST"><code>LAST</code></a>.</p>
|
||
|
|
||
|
<p>If the database does not have duplicate keys, the preceding record is
|
||
|
defined as the record with the next lowest key. If the database does
|
||
|
have duplicate keys, the preceding record is defined as the record with
|
||
|
the same key and the next lowest data value (or the next lowest primary
|
||
|
key, for a secondary database) among the duplicates for that key; or if
|
||
|
there are no preceding records with the same key, the preceding record
|
||
|
is the record with the next lowest key and the highest data value (or
|
||
|
the highest primary key, for a secondary database) among the duplicates
|
||
|
for that key.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if the record at
|
||
|
the cursor position is the first record in the database.</p></div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="PREV_DUP">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList">
|
||
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<h4>PREV_DUP</h4>
|
||
|
<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> PREV_DUP</pre>
|
||
|
<div class="block">Moves to the previous record with the same key.
|
||
|
|
||
|
<p>Moves the cursor to the record preceding the record at the current
|
||
|
cursor position and having the same key. If the cursor is uninitialized
|
||
|
(not positioned on a record), <code>IllegalStateException</code> is
|
||
|
thrown.</p>
|
||
|
|
||
|
<p>If the database has duplicate keys, moves to the record with the same
|
||
|
key and the next lowest data value (or the next lowest primary key, for
|
||
|
a secondary database) among the duplicates for that key.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if there are no
|
||
|
preceding records with the same key. This is always the case when
|
||
|
database does not have duplicate keys.</p></div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="PREV_NO_DUP">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockListLast">
|
||
|
<li class="blockList">
|
||
|
<h4>PREV_NO_DUP</h4>
|
||
|
<pre>public static final <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> PREV_NO_DUP</pre>
|
||
|
<div class="block">Moves to the previous record with a different key.
|
||
|
|
||
|
<p>Moves the cursor to the record preceding the record at the current
|
||
|
cursor position and having the next lowest key. If the cursor is
|
||
|
uninitialized (not positioned on a record), moves to the last record
|
||
|
and this operation is equivalent to <a href="../../../com/sleepycat/je/Get.html#LAST"><code>LAST</code></a>.</p>
|
||
|
|
||
|
<p>If the database has duplicate keys, moves to the record with the next
|
||
|
lowest key and the highest data value (or the highest primary key, for a
|
||
|
secondary database) among the duplicates for that key; this effectively
|
||
|
skips over records having the same key and a lower data value (or a
|
||
|
lower primary key, for a secondary database). If the database does not
|
||
|
have duplicate keys, this operation is equivalent to <a href="../../../com/sleepycat/je/Get.html#PREV"><code>PREV</code></a>.</p>
|
||
|
|
||
|
<p>The operation does not succeed (null is returned) if there are no
|
||
|
preceding records with a different key.</p></div>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<!-- ============ METHOD DETAIL ========== -->
|
||
|
<ul class="blockList">
|
||
|
<li class="blockList"><a name="method.detail">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<h3>Method Detail</h3>
|
||
|
<a name="values--">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockList">
|
||
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<li class="blockList">
|
||
|
<h4>values</h4>
|
||
|
<pre>public static <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a>[] values()</pre>
|
||
|
<div class="block">Returns an array containing the constants of this enum type, in
|
||
|
the order they are declared. This method may be used to iterate
|
||
|
over the constants as follows:
|
||
|
<pre>
|
||
|
for (Get c : Get.values())
|
||
|
System.out.println(c);
|
||
|
</pre></div>
|
||
|
<dl>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>an array containing the constants of this enum type, in the order they are declared</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
<a name="valueOf-java.lang.String-">
|
||
|
<!-- -->
|
||
|
</a>
|
||
|
<ul class="blockListLast">
|
||
|
<li class="blockList">
|
||
|
<h4>valueOf</h4>
|
||
|
<pre>public static <a href="../../../com/sleepycat/je/Get.html" title="enum in com.sleepycat.je">Get</a> valueOf(java.lang.String name)</pre>
|
||
|
<div class="block">Returns the enum constant of this type with the specified name.
|
||
|
The string must match <i>exactly</i> an identifier used to declare an
|
||
|
enum constant in this type. (Extraneous whitespace characters are
|
||
|
not permitted.)</div>
|
||
|
<dl>
|
||
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
||
|
<dd><code>name</code> - the name of the enum constant to be returned.</dd>
|
||
|
<dt><span class="returnLabel">Returns:</span></dt>
|
||
|
<dd>the enum constant with the specified name</dd>
|
||
|
<dt><span class="throwsLabel">Throws:</span></dt>
|
||
|
<dd><code>java.lang.IllegalArgumentException</code> - if this enum type has no constant with the specified name</dd>
|
||
|
<dd><code>java.lang.NullPointerException</code> - if the argument is null</dd>
|
||
|
</dl>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
</div>
|
||
|
<!-- ========= END OF CLASS DATA ========= -->
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<li><a href="package-summary.html">Package</a></li>
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<li class="navBarCell1Rev">Class</li>
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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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