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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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<h2 title="Class CurrentTransaction" class="title">Class CurrentTransaction</h2>
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<pre>public class <span class="typeNameLabel">CurrentTransaction</span>
extends java.lang.Object</pre>
<div class="block">Provides access to the current transaction for the current thread within the
context of a Berkeley DB environment. This class provides explicit
transaction control beyond that provided by the <a href="../../../com/sleepycat/collections/TransactionRunner.html" title="class in com.sleepycat.collections"><code>TransactionRunner</code></a>
class. However, both methods of transaction control manage per-thread
transactions.</div>
<dl>
<dt><span class="simpleTagLabel">Author:</span></dt>
<dd>Mark Hayes</dd>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/collections/CurrentTransaction.html#abortTransaction--">abortTransaction</a></span>()</code>
<div class="block">Aborts the transaction that is active for the current thread for this
environment and makes the parent transaction (if any) the current
transaction.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/collections/CurrentTransaction.html#beginTransaction-com.sleepycat.je.TransactionConfig-">beginTransaction</a></span>(<a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a>&nbsp;config)</code>
<div class="block">Begins a new transaction for this environment and associates it with
the current thread.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/collections/CurrentTransaction.html#commitTransaction--">commitTransaction</a></span>()</code>
<div class="block">Commits the transaction that is active for the current thread for this
environment and makes the parent transaction (if any) the current
transaction.</div>
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<td class="colFirst"><code><a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/collections/CurrentTransaction.html#getEnvironment--">getEnvironment</a></span>()</code>
<div class="block">Returns the underlying Berkeley DB environment.</div>
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<td class="colFirst"><code>static <a href="../../../com/sleepycat/collections/CurrentTransaction.html" title="class in com.sleepycat.collections">CurrentTransaction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/collections/CurrentTransaction.html#getInstance-com.sleepycat.je.Environment-">getInstance</a></span>(<a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;env)</code>
<div class="block">Gets the CurrentTransaction accessor for a specified Berkeley DB
environment.</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../com/sleepycat/collections/CurrentTransaction.html#getTransaction--">getTransaction</a></span>()</code>
<div class="block">Returns the transaction associated with the current thread for this
environment, or null if no transaction is active.</div>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>getInstance</h4>
<pre>public static&nbsp;<a href="../../../com/sleepycat/collections/CurrentTransaction.html" title="class in com.sleepycat.collections">CurrentTransaction</a>&nbsp;getInstance(<a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;env)</pre>
<div class="block">Gets the CurrentTransaction accessor for a specified Berkeley DB
environment. This method always returns the same reference when called
more than once with the same environment parameter.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>env</code> - is an open Berkeley DB environment.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the CurrentTransaction accessor for the given environment, or
null if the environment is not transactional.</dd>
</dl>
</li>
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<a name="getEnvironment--">
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<h4>getEnvironment</h4>
<pre>public final&nbsp;<a href="../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;getEnvironment()</pre>
<div class="block">Returns the underlying Berkeley DB environment.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the Environment.</dd>
</dl>
</li>
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<a name="getTransaction--">
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<h4>getTransaction</h4>
<pre>public final&nbsp;<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a>&nbsp;getTransaction()</pre>
<div class="block">Returns the transaction associated with the current thread for this
environment, or null if no transaction is active.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the Transaction.</dd>
</dl>
</li>
</ul>
<a name="beginTransaction-com.sleepycat.je.TransactionConfig-">
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<h4>beginTransaction</h4>
<pre>public final&nbsp;<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a>&nbsp;beginTransaction(<a href="../../../com/sleepycat/je/TransactionConfig.html" title="class in com.sleepycat.je">TransactionConfig</a>&nbsp;config)
throws <a href="../../../com/sleepycat/je/DatabaseException.html" title="class in com.sleepycat.je">DatabaseException</a></pre>
<div class="block">Begins a new transaction for this environment and associates it with
the current thread. If a transaction is already active for this
environment and thread, a nested transaction will be created.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>config</code> - the transaction configuration used for calling
<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>, or null to use the default
configuration.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the new transaction.
<!-- begin JE only --></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../com/sleepycat/je/rep/InsufficientReplicasException.html" title="class in com.sleepycat.je.rep">InsufficientReplicasException</a></code> - if the Master
in a replicated environment could not contact a quorum of replicas as
determined by the <a href="../../../com/sleepycat/je/Durability.ReplicaAckPolicy.html" title="enum in com.sleepycat.je"><code>Durability.ReplicaAckPolicy</code></a>.</dd>
<dd><code><a href="../../../com/sleepycat/je/rep/ReplicaConsistencyException.html" title="class in com.sleepycat.je.rep">ReplicaConsistencyException</a></code> - if a replica
in a replicated environment cannot become consistent within the timeout
period.</dd>
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.
<!-- end JE only --></dd>
<dd><code><a href="../../../com/sleepycat/je/DatabaseException.html" title="class in com.sleepycat.je">DatabaseException</a></code> - if the transaction cannot be started, in which
case any existing transaction is not affected.</dd>
<dd><code>java.lang.IllegalStateException</code> - if a transaction is already active and
nested transactions are not supported by the environment.</dd>
</dl>
</li>
</ul>
<a name="commitTransaction--">
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<h4>commitTransaction</h4>
<pre>public final&nbsp;<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a>&nbsp;commitTransaction()
throws <a href="../../../com/sleepycat/je/DatabaseException.html" title="class in com.sleepycat.je">DatabaseException</a>,
java.lang.IllegalStateException</pre>
<div class="block">Commits the transaction that is active for the current thread for this
environment and makes the parent transaction (if any) the current
transaction.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the parent transaction or null if the committed transaction was
not nested.
<!-- begin JE only --></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../com/sleepycat/je/rep/InsufficientReplicasException.html" title="class in com.sleepycat.je.rep">InsufficientReplicasException</a></code> - if the master
in a replicated environment could not contact a quorum of replicas as
determined by the <a href="../../../com/sleepycat/je/Durability.ReplicaAckPolicy.html" title="enum in com.sleepycat.je"><code>Durability.ReplicaAckPolicy</code></a>.
The application must abort the transaction and can choose to retry it.</dd>
<dd><code><a href="../../../com/sleepycat/je/rep/InsufficientAcksException.html" title="class in com.sleepycat.je.rep">InsufficientAcksException</a></code> - if the master in
a replicated environment did not receive enough replica acknowledgments,
although the commit succeeded locally.</dd>
<dd><code><a href="../../../com/sleepycat/je/rep/ReplicaWriteException.html" title="class in com.sleepycat.je.rep">ReplicaWriteException</a></code> - if a write operation
was performed with this transaction, but this node is now a Replica.</dd>
<dd><code><a href="../../../com/sleepycat/je/OperationFailureException.html" title="class in com.sleepycat.je">OperationFailureException</a></code> - if this exception occurred earlier and
caused the transaction to be invalidated.</dd>
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.
<!-- end JE only --></dd>
<dd><code><a href="../../../com/sleepycat/je/DatabaseException.html" title="class in com.sleepycat.je">DatabaseException</a></code> - if an error occurs committing the transaction.
The transaction will still be closed and the parent transaction will
become the current transaction.</dd>
<dd><code>java.lang.IllegalStateException</code> - if no transaction is active for the
current thread for this environment.</dd>
</dl>
</li>
</ul>
<a name="abortTransaction--">
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<h4>abortTransaction</h4>
<pre>public final&nbsp;<a href="../../../com/sleepycat/je/Transaction.html" title="class in com.sleepycat.je">Transaction</a>&nbsp;abortTransaction()
throws <a href="../../../com/sleepycat/je/DatabaseException.html" title="class in com.sleepycat.je">DatabaseException</a>,
java.lang.IllegalStateException</pre>
<div class="block">Aborts the transaction that is active for the current thread for this
environment and makes the parent transaction (if any) the current
transaction.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the parent transaction or null if the aborted transaction was
not nested.
<!-- begin JE only --></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.
<!-- end JE only --></dd>
<dd><code><a href="../../../com/sleepycat/je/DatabaseException.html" title="class in com.sleepycat.je">DatabaseException</a></code> - if an error occurs aborting the transaction.
The transaction will still be closed and the parent transaction will
become the current transaction.</dd>
<dd><code>java.lang.IllegalStateException</code> - if no transaction is active for the
current thread for this environment.</dd>
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