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Yasuhiro KIMURA
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<div class="aboutLanguage"><b>Berkeley DB</b><br><font size="-1"> version 18.1.40</font></div>
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<div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">com.sleepycat.db</a></div>
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<h2 title="Class RecoveryOperation" class="title">Class RecoveryOperation</h2>
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<ul class="inheritance">
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<li>java.lang.Object</li>
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<li>com.sleepycat.db.RecoveryOperation</li>
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<pre>public final class <span class="typeNameLabel">RecoveryOperation</span>
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extends java.lang.Object</pre>
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<div class="block">The recovery operation being performed when <a href="LogRecordHandler.html#handleLogRecord-com.sleepycat.db.Environment-com.sleepycat.db.DatabaseEntry-com.sleepycat.db.LogSequenceNumber-com.sleepycat.db.RecoveryOperation-"><code>LogRecordHandler.handleLogRecord</code></a> is called.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd"> </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="colSecond" scope="col">Field</th>
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<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
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<td class="colFirst"><code>static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ABORT">ABORT</a></span></code></th>
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<td class="colLast">
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<div class="block">The log is being read backward during a transaction abort; undo the
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operation described by the log 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="colFirst"><code>static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#APPLY">APPLY</a></span></code></th>
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<td class="colLast">
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<div class="block">The log is being applied on a replica site; redo the operation
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described by the log 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="colFirst"><code>static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BACKWARD_ROLL">BACKWARD_ROLL</a></span></code></th>
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<td class="colLast">
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<div class="block">The log is being read backward to determine which transactions have
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been committed and to abort those operations that were not; undo the
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operation described by the log 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="colFirst"><code>static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#FORWARD_ROLL">FORWARD_ROLL</a></span></code></th>
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<td class="colLast">
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<div class="block">The log is being played forward; redo the operation described by the log
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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="colFirst"><code>static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#PRINT">PRINT</a></span></code></th>
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<td class="colLast">
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<div class="block">The log is being printed for debugging purposes; print the contents of
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this log record in the desired format.</div>
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</td>
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</tr>
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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="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>static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#fromFlag-int-">fromFlag</a></span>​(int flag)</code></th>
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<td class="colLast">
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<div class="block">Internal: this is public only so it can be called from an internal
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package.</div>
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</td>
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<td class="colFirst"><code>java.lang.String</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString--">toString</a></span>()</code></th>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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<h4>BACKWARD_ROLL</h4>
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<pre>public static final <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a> BACKWARD_ROLL</pre>
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<div class="block">The log is being read backward to determine which transactions have
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been committed and to abort those operations that were not; undo the
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operation described by the log record.</div>
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</li>
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</ul>
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<a name="FORWARD_ROLL">
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<h4>FORWARD_ROLL</h4>
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<pre>public static final <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a> FORWARD_ROLL</pre>
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<div class="block">The log is being played forward; redo the operation described by the log
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record.
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<p>
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The FORWARD_ROLL and APPLY operations frequently imply the same actions,
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redoing changes that appear in the log record, although if a recovery
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function is to be used on a replication client where reads may be taking
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place concurrently with the processing of incoming messages, APPLY
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operations should also perform appropriate locking.</div>
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<h4>ABORT</h4>
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<pre>public static final <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a> ABORT</pre>
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<div class="block">The log is being read backward during a transaction abort; undo the
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operation described by the log record.</div>
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</li>
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<a name="APPLY">
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<h4>APPLY</h4>
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<pre>public static final <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a> APPLY</pre>
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<div class="block">The log is being applied on a replica site; redo the operation
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described by the log record.
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<p>
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The FORWARD_ROLL and APPLY operations frequently imply the same actions,
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redoing changes that appear in the log record, although if a recovery
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function is to be used on a replication client where reads may be taking
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place concurrently with the processing of incoming messages, APPLY
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operations should also perform appropriate locking.</div>
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</li>
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</ul>
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<a name="PRINT">
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<h4>PRINT</h4>
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<pre>public static final <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a> PRINT</pre>
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<div class="block">The log is being printed for debugging purposes; print the contents of
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this log record in the desired format.</div>
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</li>
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</ul>
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<h4>toString</h4>
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<pre class="methodSignature">public java.lang.String toString()</pre>
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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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</dl>
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</li>
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<h4>fromFlag</h4>
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<pre class="methodSignature">public static <a href="RecoveryOperation.html" title="class in com.sleepycat.db">RecoveryOperation</a> fromFlag​(int flag)</pre>
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<div class="block">Internal: this is public only so it can be called from an internal
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package.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>flag</code> - the internal flag value to be wrapped in a RecoveryException object</dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>a RecoveryOperation</dd>
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</dl>
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</li>
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