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<div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">com.sleepycat.collections</a></div>
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<h2 title="Class CurrentTransaction" class="title">Class CurrentTransaction</h2>
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<li>java.lang.Object</li>
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<ul class="inheritance">
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<li>com.sleepycat.collections.CurrentTransaction</li>
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<pre>public class <span class="typeNameLabel">CurrentTransaction</span>
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extends java.lang.Object</pre>
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<div class="block">Provides access to the current transaction for the current thread within the
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context of a Berkeley DB environment. This class provides explicit
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transaction control beyond that provided by the <a href="TransactionRunner.html" title="class in com.sleepycat.collections"><code>TransactionRunner</code></a>
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class. However, both methods of transaction control manage per-thread
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transactions.</div>
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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="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></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colSecond" scope="col">Method</th>
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<th class="colLast" scope="col">Description</th>
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</tr>
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<tr id="i0" class="altColor">
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<td class="colFirst"><code><a href="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#abortTransaction--">abortTransaction</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Aborts the transaction that is active for the current thread for this
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environment and makes the parent transaction (if any) the current
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transaction.</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="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#beginTransaction-com.sleepycat.db.TransactionConfig-">beginTransaction</a></span>​(<a href="../db/TransactionConfig.html" title="class in com.sleepycat.db">TransactionConfig</a> config)</code></th>
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<td class="colLast">
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<div class="block">Begins a new transaction for this environment and associates it with
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the current thread.</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="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#commitTransaction--">commitTransaction</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Commits the transaction that is active for the current thread for this
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environment and makes the parent transaction (if any) the current
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transaction.</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><a href="../db/Environment.html" title="class in com.sleepycat.db">Environment</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEnvironment--">getEnvironment</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Returns the underlying Berkeley DB environment.</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>static <a href="CurrentTransaction.html" title="class in com.sleepycat.collections">CurrentTransaction</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getInstance-com.sleepycat.db.Environment-">getInstance</a></span>​(<a href="../db/Environment.html" title="class in com.sleepycat.db">Environment</a> env)</code></th>
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<td class="colLast">
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<div class="block">Gets the CurrentTransaction accessor for a specified Berkeley DB
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environment.</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="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTransaction--">getTransaction</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Returns the transaction associated with the current thread for this
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environment, or null if no transaction is active.</div>
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</td>
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<h3>Methods inherited from class java.lang.Object</h3>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<a name="getInstance-com.sleepycat.db.Environment-">
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<h4>getInstance</h4>
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<pre class="methodSignature">public static <a href="CurrentTransaction.html" title="class in com.sleepycat.collections">CurrentTransaction</a> getInstance​(<a href="../db/Environment.html" title="class in com.sleepycat.db">Environment</a> env)</pre>
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<div class="block">Gets the CurrentTransaction accessor for a specified Berkeley DB
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environment. This method always returns the same reference when called
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more than once with the same environment parameter.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>env</code> - is an open Berkeley DB environment.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the CurrentTransaction accessor for the given environment, or
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null if the environment is not transactional.</dd>
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</dl>
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<a name="getEnvironment--">
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<h4>getEnvironment</h4>
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<pre class="methodSignature">public final <a href="../db/Environment.html" title="class in com.sleepycat.db">Environment</a> getEnvironment()</pre>
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<div class="block">Returns the underlying Berkeley DB environment.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the Environment.</dd>
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</dl>
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</li>
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</ul>
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<a name="getTransaction--">
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<h4>getTransaction</h4>
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<pre class="methodSignature">public final <a href="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a> getTransaction()</pre>
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<div class="block">Returns the transaction associated with the current thread for this
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environment, or null if no transaction is active.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the Transaction.</dd>
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</dl>
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</li>
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</ul>
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<a name="beginTransaction-com.sleepycat.db.TransactionConfig-">
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<h4>beginTransaction</h4>
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<pre class="methodSignature">public final <a href="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a> beginTransaction​(<a href="../db/TransactionConfig.html" title="class in com.sleepycat.db">TransactionConfig</a> config)
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throws <a href="../db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a></pre>
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<div class="block">Begins a new transaction for this environment and associates it with
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the current thread. If a transaction is already active for this
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environment and thread, a nested transaction will be created.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>config</code> - the transaction configuration used for calling
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<a href="../db/Environment.html#beginTransaction-com.sleepycat.db.Transaction-com.sleepycat.db.TransactionConfig-"><code>Environment.beginTransaction(com.sleepycat.db.Transaction, com.sleepycat.db.TransactionConfig)</code></a>, or null to use the default
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configuration.</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the new transaction.</dd>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code><a href="../db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a></code> - if the transaction cannot be started, in which
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case any existing transaction is not affected.</dd>
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<dd><code>java.lang.IllegalStateException</code> - if a transaction is already active and
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nested transactions are not supported by the environment.</dd>
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</dl>
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</li>
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</ul>
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<a name="commitTransaction--">
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<h4>commitTransaction</h4>
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<pre class="methodSignature">public final <a href="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a> commitTransaction()
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throws <a href="../db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a>,
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java.lang.IllegalStateException</pre>
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<div class="block">Commits the transaction that is active for the current thread for this
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environment and makes the parent transaction (if any) the current
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transaction.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the parent transaction or null if the committed transaction was
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not nested.</dd>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code><a href="../db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a></code> - if an error occurs committing the transaction.
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The transaction will still be closed and the parent transaction will
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become the current transaction.</dd>
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<dd><code>java.lang.IllegalStateException</code> - if no transaction is active for the
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current thread for this environment.</dd>
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</dl>
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</li>
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</ul>
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<a name="abortTransaction--">
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<h4>abortTransaction</h4>
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<pre class="methodSignature">public final <a href="../db/Transaction.html" title="class in com.sleepycat.db">Transaction</a> abortTransaction()
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throws <a href="../db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a>,
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java.lang.IllegalStateException</pre>
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<div class="block">Aborts the transaction that is active for the current thread for this
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environment and makes the parent transaction (if any) the current
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transaction.</div>
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<dl>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>the parent transaction or null if the aborted transaction was
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not nested.</dd>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code><a href="../db/DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a></code> - if an error occurs aborting the transaction.
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The transaction will still be closed and the parent transaction will
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become the current transaction.</dd>
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<dd><code>java.lang.IllegalStateException</code> - if no transaction is active for the
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current thread for this environment.</dd>
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</dl>
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</li>
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<li><a href="#method.summary">Method</a></li>
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