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<h2 title="Class TransactionConfig" class="title">Class TransactionConfig</h2>
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<pre>public class <span class="typeNameLabel">TransactionConfig</span>
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extends java.lang.Object
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implements java.lang.Cloneable</pre>
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<div class="block">Specifies the attributes of a database environment transaction.</div>
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<td class="colFirst"><code>static <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#DEFAULT">DEFAULT</a></span></code>
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<div class="block">Default configuration used if null is passed to methods that create a
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transaction.</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#TransactionConfig--">TransactionConfig</a></span>()</code>
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<div class="block">An instance created using the default constructor is initialized with
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the system's default settings.</div>
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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><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#clone--">clone</a></span>()</code>
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<div class="block">Returns a copy of this configuration object.</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><a href="../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getConsistencyPolicy--">getConsistencyPolicy</a></span>()</code>
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<div class="block">Returns the consistency policy associated with the configuration.</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><a href="../../../com/sleepycat/je/Durability.html" title="class in com.sleepycat.je">Durability</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getDurability--">getDurability</a></span>()</code>
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<div class="block">Returns the durability associated with the configuration.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getLocalWrite--">getLocalWrite</a></span>()</code>
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<div class="block">Returns whether local-write is configured for this transaction.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getNoSync--">getNoSync</a></span>()</code>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
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<div class="block"><span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#getDurability--"><code>getDurability()</code></a></span></div>
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</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getNoWait--">getNoWait</a></span>()</code>
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<div class="block">Returns true if the transaction is configured to not wait if a lock
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request cannot be immediately granted.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getReadCommitted--">getReadCommitted</a></span>()</code>
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<div class="block">Returns true if the transaction is configured for read committed
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isolation.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getReadOnly--">getReadOnly</a></span>()</code>
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<div class="block">Returns whether read-only is configured for this transaction.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getReadUncommitted--">getReadUncommitted</a></span>()</code>
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<div class="block">Returns true if read operations performed by the transaction are
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configured to return modified but not yet committed data.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getSerializableIsolation--">getSerializableIsolation</a></span>()</code>
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<div class="block">Returns true if the transaction has been explicitly configured to have
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serializable (degree 3) isolation.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getSync--">getSync</a></span>()</code>
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<div class="block">Returns true if the transaction is configured to write and synchronously
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flush the log it when commits.</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>boolean</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#getWriteNoSync--">getWriteNoSync</a></span>()</code>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
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<div class="block"><span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#getDurability--"><code>getDurability()</code></a></span></div>
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</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/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setConsistencyPolicy-com.sleepycat.je.ReplicaConsistencyPolicy-">setConsistencyPolicy</a></span>(<a href="../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a> consistencyPolicy)</code>
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<div class="block">Associates a consistency policy with this configuration.</div>
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</td>
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</tr>
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<tr id="i13" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-">setDurability</a></span>(<a href="../../../com/sleepycat/je/Durability.html" title="class in com.sleepycat.je">Durability</a> durability)</code>
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<div class="block">Configures the durability associated with a transaction when it commits.</div>
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</td>
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</tr>
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<tr id="i14" class="altColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setLocalWrite-boolean-">setLocalWrite</a></span>(boolean localWrite)</code>
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<div class="block">Configures this transaction to allow writing to non-replicated
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<a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>s in a
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<a href="../../../com/sleepycat/je/rep/ReplicatedEnvironment.html" title="class in com.sleepycat.je.rep"><code>ReplicatedEnvironment</code></a>.</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/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setNoSync-boolean-">setNoSync</a></span>(boolean noSync)</code>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
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<div class="block"><span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-"><code>setDurability(com.sleepycat.je.Durability)</code></a></span></div>
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</div>
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</td>
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</tr>
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<tr id="i16" class="altColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setNoWait-boolean-">setNoWait</a></span>(boolean noWait)</code>
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<div class="block">Configures the transaction to not wait if a lock request cannot be
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immediately granted.</div>
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</td>
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</tr>
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<tr id="i17" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setReadCommitted-boolean-">setReadCommitted</a></span>(boolean readCommitted)</code>
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<div class="block">Configures the transaction for read committed isolation.</div>
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</td>
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</tr>
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<tr id="i18" class="altColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setReadOnly-boolean-">setReadOnly</a></span>(boolean readOnly)</code>
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<div class="block">Configures this transaction to disallow write operations, regardless of
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whether writes are allowed for the <a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je"><code>Environment</code></a> or the
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<a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>s that are accessed.</div>
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</td>
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</tr>
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<tr id="i19" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setReadUncommitted-boolean-">setReadUncommitted</a></span>(boolean readUncommitted)</code>
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<div class="block">Configures read operations performed by the transaction to return
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modified but not yet committed data.</div>
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</td>
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</tr>
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<tr id="i20" class="altColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setSerializableIsolation-boolean-">setSerializableIsolation</a></span>(boolean serializableIsolation)</code>
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<div class="block">Configures this transaction to have serializable (degree 3) isolation.</div>
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</td>
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</tr>
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<tr id="i21" class="rowColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setSync-boolean-">setSync</a></span>(boolean sync)</code>
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<div class="block">Configures the transaction to write and synchronously flush the log it
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when commits.</div>
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</td>
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</tr>
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<tr id="i22" class="altColor">
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/je/TransactionConfig.html#setWriteNoSync-boolean-">setWriteNoSync</a></span>(boolean writeNoSync)</code>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>
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<div class="block"><span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-"><code>setDurability(com.sleepycat.je.Durability)</code></a></span></div>
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</div>
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</td>
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<tr id="i23" class="rowColor">
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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/TransactionConfig.html#toString--">toString</a></span>()</code>
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<div class="block">Returns the values for each configuration attribute.</div>
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<h3>Methods inherited from class java.lang.Object</h3>
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<code>equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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</ul>
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<h4>DEFAULT</h4>
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<pre>public static final <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> DEFAULT</pre>
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<div class="block">Default configuration used if null is passed to methods that create a
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transaction.</div>
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<h4>TransactionConfig</h4>
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<pre>public TransactionConfig()</pre>
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<div class="block">An instance created using the default constructor is initialized with
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the system's default settings.</div>
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<h4>setSync</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setSync(boolean sync)</pre>
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<div class="block">Configures the transaction to write and synchronously flush the log it
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when commits.
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<p>This behavior may be set for a database environment using the
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Environment.setMutableConfig method. Any value specified to this method
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overrides that setting.</p>
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<p>The default is false for this class and true for the database
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environment.</p>
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<p>If true is passed to both setSync and setNoSync, setSync will take
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precedence.</p></div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>sync</code> - If true, transactions exhibit all the ACID (atomicity,
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consistency, isolation, and durability) properties.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<h4>getSync</h4>
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<pre>public boolean getSync()</pre>
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<div class="block">Returns true if the transaction is configured to write and synchronously
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flush the log it when commits.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the transaction is configured to write and synchronously
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flush the log it when commits.</dd>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setNoSync(boolean noSync)</pre>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-"><code>setDurability(com.sleepycat.je.Durability)</code></a></span></div>
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<div class="block">Configures the transaction to not write or synchronously flush the log
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it when commits.
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<p>This behavior may be set for a database environment using the
|
|
Environment.setMutableConfig method. Any value specified to this method
|
|
overrides that setting.</p>
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<p>The default is false for this class and the database environment.</p></div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>noSync</code> - If true, transactions exhibit the ACI (atomicity,
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consistency, and isolation) properties, but not D (durability); that is,
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database integrity will be maintained, but if the application or system
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|
fails, it is possible some number of the most recently committed
|
|
transactions may be undone during recovery. The number of transactions
|
|
at risk is governed by how many log updates can fit into the log buffer,
|
|
how often the operating system flushes dirty buffers to disk, and how
|
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often the log is checkpointed.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<h4>getNoSync</h4>
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<pre>public boolean getNoSync()</pre>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#getDurability--"><code>getDurability()</code></a></span></div>
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<div class="block">Returns true if the transaction is configured to not write or
|
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synchronously flush the log it when commits.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the transaction is configured to not write or
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synchronously flush the log it when commits.</dd>
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<h4>setWriteNoSync</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setWriteNoSync(boolean writeNoSync)</pre>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-"><code>setDurability(com.sleepycat.je.Durability)</code></a></span></div>
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<div class="block">Configures the transaction to write but not synchronously flush the log
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|
it when commits.
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<p>This behavior may be set for a database environment using the
|
|
Environment.setMutableConfig method. Any value specified to this method
|
|
overrides that setting.</p>
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<p>The default is false for this class and the database environment.</p></div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>writeNoSync</code> - If true, transactions exhibit the ACI (atomicity,
|
|
consistency, and isolation) properties, but not D (durability); that is,
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|
database integrity will be maintained, but if the operating system
|
|
fails, it is possible some number of the most recently committed
|
|
transactions may be undone during recovery. The number of transactions
|
|
at risk is governed by how often the operating system flushes dirty
|
|
buffers to disk, and how often the log is checkpointed.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<pre>public boolean getWriteNoSync()</pre>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span> <span class="deprecationComment">replaced by <a href="../../../com/sleepycat/je/TransactionConfig.html#getDurability--"><code>getDurability()</code></a></span></div>
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<div class="block">Returns true if the transaction is configured to write but not
|
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synchronously flush the log it when commits.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the transaction is configured to not write or
|
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synchronously flush the log it when commits.</dd>
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<h4>setDurability</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setDurability(<a href="../../../com/sleepycat/je/Durability.html" title="class in com.sleepycat.je">Durability</a> durability)</pre>
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<div class="block">Configures the durability associated with a transaction when it commits.
|
|
Changes to durability are not reflected back to the "sync" booleans --
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|
there isn't a one to one mapping.
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Note that you should not use both the durability and the XXXSync() apis
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on the same config object.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>durability</code> - the durability definition</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<h4>getDurability</h4>
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<pre>public <a href="../../../com/sleepycat/je/Durability.html" title="class in com.sleepycat.je">Durability</a> getDurability()</pre>
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<div class="block">Returns the durability associated with the configuration.
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If <a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-"><code>setDurability(com.sleepycat.je.Durability)</code></a> has not been called, this method returns null.
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When no durability settings have been specified using the
|
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<code>TransactionConfig</code>, the default durability is applied to the
|
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<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je"><code>Transaction</code></a> by <a href="../../../com/sleepycat/je/Environment.html#beginTransaction-com.sleepycat.je.Transaction-com.sleepycat.je.TransactionConfig-"><code>Environment.beginTransaction(com.sleepycat.je.Transaction, com.sleepycat.je.TransactionConfig)</code></a> using
|
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<a href="../../../com/sleepycat/je/EnvironmentConfig.html" title="class in com.sleepycat.je"><code>EnvironmentConfig</code></a> settings.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the durability setting currently associated with this config.</dd>
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<h4>setConsistencyPolicy</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setConsistencyPolicy(<a href="../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a> consistencyPolicy)</pre>
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<div class="block">Associates a consistency policy with this configuration.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>consistencyPolicy</code> - the consistency definition</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<pre>public <a href="../../../com/sleepycat/je/ReplicaConsistencyPolicy.html" title="interface in com.sleepycat.je">ReplicaConsistencyPolicy</a> getConsistencyPolicy()</pre>
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<div class="block">Returns the consistency policy associated with the configuration.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the consistency policy currently associated with this config.</dd>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setNoWait(boolean noWait)</pre>
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<div class="block">Configures the transaction to not wait if a lock request cannot be
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immediately granted.
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<p>The default is false for this class and the database environment.</p></div>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>noWait</code> - If true, transactions will not wait if a lock request
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cannot be immediately granted, instead <a href="../../../com/sleepycat/je/LockNotAvailableException.html" title="class in com.sleepycat.je"><code>LockNotAvailableException</code></a>
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will be thrown.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<pre>public boolean getNoWait()</pre>
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<div class="block">Returns true if the transaction is configured to not wait if a lock
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request cannot be immediately granted.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the transaction is configured to not wait if a lock
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request cannot be immediately granted.</dd>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setReadUncommitted(boolean readUncommitted)</pre>
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<div class="block">Configures read operations performed by the transaction to return
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modified but not yet committed data.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>readUncommitted</code> - If true, configure read operations performed by
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the transaction to return modified but not yet committed data.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../com/sleepycat/je/LockMode.html#READ_UNCOMMITTED"><code>LockMode.READ_UNCOMMITTED</code></a></dd>
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<pre>public boolean getReadUncommitted()</pre>
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<div class="block">Returns true if read operations performed by the transaction are
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configured to return modified but not yet committed data.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if read operations performed by the transaction are
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configured to return modified but not yet committed data.</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../com/sleepycat/je/LockMode.html#READ_UNCOMMITTED"><code>LockMode.READ_UNCOMMITTED</code></a></dd>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setReadCommitted(boolean readCommitted)</pre>
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<div class="block">Configures the transaction for read committed isolation.
|
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|
<p>This ensures the stability of the current data item read by the
|
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cursor but permits data read by this transaction to be modified or
|
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deleted prior to the commit of the transaction.</p></div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>readCommitted</code> - If true, configure the transaction for read
|
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committed isolation.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../com/sleepycat/je/LockMode.html#READ_COMMITTED"><code>LockMode.READ_COMMITTED</code></a></dd>
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<pre>public boolean getReadCommitted()</pre>
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<div class="block">Returns true if the transaction is configured for read committed
|
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isolation.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the transaction is configured for read committed
|
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isolation.</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../com/sleepycat/je/LockMode.html#READ_COMMITTED"><code>LockMode.READ_COMMITTED</code></a></dd>
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<h4>setSerializableIsolation</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setSerializableIsolation(boolean serializableIsolation)</pre>
|
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<div class="block">Configures this transaction to have serializable (degree 3) isolation.
|
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By setting serializable isolation, phantoms will be prevented.
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<p>By default a transaction provides Repeatable Read isolation; <a href="../../../com/sleepycat/je/EnvironmentConfig.html#setTxnSerializableIsolation-boolean-"><code>EnvironmentConfig.setTxnSerializableIsolation(boolean)</code></a> may be called to override
|
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the default. If the environment is configured for serializable
|
|
isolation, all transactions will be serializable regardless of whether
|
|
this method is called; calling <a href="../../../com/sleepycat/je/TransactionConfig.html#setSerializableIsolation-boolean-"><code>setSerializableIsolation(boolean)</code></a> with a
|
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false parameter will not disable serializable isolation.</p>
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The default is false for this class and the database environment.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../com/sleepycat/je/LockMode.html" title="enum in com.sleepycat.je"><code>LockMode</code></a></dd>
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<h4>getSerializableIsolation</h4>
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<pre>public boolean getSerializableIsolation()</pre>
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<div class="block">Returns true if the transaction has been explicitly configured to have
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serializable (degree 3) isolation.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>true if the transaction has been configured to have serializable
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isolation.</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../com/sleepycat/je/LockMode.html" title="enum in com.sleepycat.je"><code>LockMode</code></a></dd>
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<h4>setReadOnly</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setReadOnly(boolean readOnly)</pre>
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<div class="block">Configures this transaction to disallow write operations, regardless of
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whether writes are allowed for the <a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je"><code>Environment</code></a> or the
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<a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>s that are accessed.
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<p>If a write operation is attempted using a read-only transaction,
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an <code>UnsupportedOperationException</code> will be thrown.</p>
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<p>For a read-only transaction, the transaction's <code>Durability</code> is
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ignored, even when it is explicitly specified using <a href="../../../com/sleepycat/je/TransactionConfig.html#setDurability-com.sleepycat.je.Durability-"><code>setDurability(Durability)</code></a>.</p>
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<p>In a <a href="../../../com/sleepycat/je/rep/ReplicatedEnvironment.html" title="class in com.sleepycat.je.rep"><code>ReplicatedEnvironment</code></a>, a read-only
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transaction implicitly uses
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<a href="../../../com/sleepycat/je/Durability.ReplicaAckPolicy.html#NONE"><code>Durability.ReplicaAckPolicy.NONE</code></a>.
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A read-only transaction on a Master will thus not be held up, or
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throw <a href="../../../com/sleepycat/je/rep/InsufficientReplicasException.html" title="class in com.sleepycat.je.rep"><code>InsufficientReplicasException</code></a>, if the
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Master is not in contact with a sufficient number of Replicas at the
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time the transaction is initiated.</p>
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<p>The default setting is false (writes are allowed).</p></div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<h4>getReadOnly</h4>
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<pre>public boolean getReadOnly()</pre>
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<div class="block">Returns whether read-only is configured for this transaction.</div>
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</li>
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<h4>setLocalWrite</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> setLocalWrite(boolean localWrite)</pre>
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<div class="block">Configures this transaction to allow writing to non-replicated
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<a href="../../../com/sleepycat/je/Database.html" title="class in com.sleepycat.je"><code>Database</code></a>s in a
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<a href="../../../com/sleepycat/je/rep/ReplicatedEnvironment.html" title="class in com.sleepycat.je.rep"><code>ReplicatedEnvironment</code></a>.
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<p>In a replicated environment, a given transaction may be used to
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write to either replicated databases or non-replicated databases, but
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not both. If a write operation to a replicated database is attempted
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when local-write is true, or to a non-replicated database when
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local-write is false, an <code>UnsupportedOperationException</code> will be
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thrown.</p>
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<p>Note that for auto-commit transactions (when the <code>Transaction</code>
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parameter is null), the local-write setting is automatically set to
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correspond to whether the database is replicated. With auto-commit,
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local-write is always true for a non-replicated database, and
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always false for a replicated database.</p>
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<p>In a replicated environment, a local-write transaction implicitly
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uses <a href="../../../com/sleepycat/je/Durability.ReplicaAckPolicy.html#NONE"><code>Durability.ReplicaAckPolicy.NONE</code></a>.
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A local-write transaction on a Master will thus not be held up, or
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throw <a href="../../../com/sleepycat/je/rep/InsufficientReplicasException.html" title="class in com.sleepycat.je.rep"><code>InsufficientReplicasException</code></a>, if the
|
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Master is not in contact with a sufficient number of Replicas at the
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time the transaction is initiated.</p>
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<p>By default the local-write setting is false, meaning that the
|
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transaction may only write to replicated Databases in a replicated
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environment.</p>
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<p>This configuration setting is ignored in a non-replicated Environment
|
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since no databases are replicated.</p></div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>this</dd>
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<dt><span class="seeLabel">See Also:</span></dt>
|
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<dd><a href="rep/ReplicatedEnvironment.html#nonRepDbs>Non-replicated
|
|
Databases in a Replicated Environment</a></dd>
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</dl>
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<h4>getLocalWrite</h4>
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<pre>public boolean getLocalWrite()</pre>
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<div class="block">Returns whether local-write is configured for this transaction.</div>
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</li>
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</ul>
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<h4>clone</h4>
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<pre>public <a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a> clone()</pre>
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<div class="block">Returns a copy of this configuration object.</div>
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<dl>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
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<dd><code>clone</code> in class <code>java.lang.Object</code></dd>
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</dl>
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</ul>
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<a name="toString--">
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</a>
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<h4>toString</h4>
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<pre>public java.lang.String toString()</pre>
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<div class="block">Returns the values for each configuration attribute.</div>
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<dl>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
|
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<dd><code>toString</code> in class <code>java.lang.Object</code></dd>
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<dt><span class="returnLabel">Returns:</span></dt>
|
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<dd>the values for each configuration attribute.</dd>
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</dl>
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</li>
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