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Yasuhiro KIMURA
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761 lines
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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="Interface EventHandler" class="title">Interface EventHandler</h2>
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<div class="description">
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<dl>
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<dt>All Known Implementing Classes:</dt>
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<dd><code><a href="EventHandlerAdapter.html" title="class in com.sleepycat.db">EventHandlerAdapter</a></code></dd>
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</dl>
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<hr>
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<pre>public interface <span class="typeNameLabel">EventHandler</span></pre>
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<div class="block">An interface classs with prototype definitions of all event functions that
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can be called via the Berkeley DB event callback mechanism.
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<p>
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A user can choose to implement the EventHandler class, and implement handlers
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for all of the event types. Alternatively it is possible to extend the
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EventHandlerAdapter class, and implement only those events relevant to the
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specific application.
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<p>
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The <a href="EnvironmentConfig.html#setEventHandler-com.sleepycat.db.EventHandler-"><code>EnvironmentConfig.setEventHandler</code></a> is used to provide
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a mechanism for reporting event messages from the Berkeley DB library
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to the application.
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<p>
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Berkeley DB is not re-entrant. Callback functions should not attempt
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to make library calls (for example, to release locks or close open
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handles). Re-entering Berkeley DB is not guaranteed to work correctly,
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and the results are undefined.</div>
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<h3>Method Summary</h3>
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<table class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handlePanicEvent--">handlePanicEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a panic event is sent from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepAutoTakeoverEvent--">handleRepAutoTakeoverEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication automatic takeover
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event is sent from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepAutoTakeoverFailedEvent--">handleRepAutoTakeoverFailedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication automatic takeover
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failed event is sent from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepClientEvent--">handleRepClientEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication Client event is sent
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from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepConnectBrokenEvent--">handleRepConnectBrokenEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication connect broken event
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is sent from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepConnectEstablishedEvent--">handleRepConnectEstablishedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication connect established
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event is sent from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepConnectTryFailedEvent--">handleRepConnectTryFailedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication connect retry failed
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event is sent from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepDupmasterEvent--">handleRepDupmasterEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a Replication Client event is sent
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from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepElectedEvent--">handleRepElectedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepElectionFailedEvent--">handleRepElectionFailedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepInitDoneEvent--">handleRepInitDoneEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepInQueueFullEvent--">handleRepInQueueFullEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepJoinFailureEvent--">handleRepJoinFailureEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepLocalSiteRemovedEvent--">handleRepLocalSiteRemovedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a local site removed event is sent
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from the Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepMasterEvent--">handleRepMasterEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepMasterFailureEvent--">handleRepMasterFailureEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepNewMasterEvent-int-">handleRepNewMasterEvent</a></span>​(int envId)</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepPermFailedEvent--">handleRepPermFailedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepSiteAddedEvent--">handleRepSiteAddedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a site added event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepSiteRemovedEvent--">handleRepSiteRemovedEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when a site removed event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleRepStartupDoneEvent--">handleRepStartupDoneEvent</a></span>()</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</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>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#handleWriteFailedEvent-int-">handleWriteFailedEvent</a></span>​(int errorCode)</code></th>
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<td class="colLast">
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<div class="block">A callback function to be called when an event is sent from the
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Berkeley DB library.</div>
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</td>
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</tr>
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</table>
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</li>
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</ul>
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</li>
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</ul>
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</div>
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<div class="details">
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<li class="blockList">
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<!-- ============ METHOD DETAIL ========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.detail">
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</a>
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<h3>Method Detail</h3>
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<a name="handlePanicEvent--">
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</a>
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<ul class="blockList">
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<h4>handlePanicEvent</h4>
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<pre class="methodSignature">void handlePanicEvent()</pre>
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<div class="block">A callback function to be called when a panic event is sent from the Berkeley DB library.
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<p> This event callback is received when an error occurs in the Berkeley DB
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library where the only solution is to shut down the application and run
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recovery. In such cases, the Berkeley DB methods will throw
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<a href="RunRecoveryException.html" title="class in com.sleepycat.db"><code>RunRecoveryException</code></a> exceptions. It is often easier to simply exit
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the application when such errors occur, rather than gracefully return up
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the stack.
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<p>
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When this callback is received the database environment has failed. All
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threads of control in the database environment should exit the environment
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and recovery should be run.</div>
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</li>
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</ul>
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<a name="handleRepAutoTakeoverEvent--">
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</a>
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<ul class="blockList">
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<li class="blockList">
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<h4>handleRepAutoTakeoverEvent</h4>
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<pre class="methodSignature">void handleRepAutoTakeoverEvent()</pre>
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<div class="block">A callback function to be called when a Replication automatic takeover
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event is sent from the Berkeley DB library.
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<p>
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This event callback is received in a replication manager subordinate
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process when it succeeds to take over as the replication process.</div>
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</li>
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</ul>
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<a name="handleRepAutoTakeoverFailedEvent--">
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</a>
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<ul class="blockList">
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<h4>handleRepAutoTakeoverFailedEvent</h4>
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<pre class="methodSignature">void handleRepAutoTakeoverFailedEvent()</pre>
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<div class="block">A callback function to be called when a Replication automatic takeover
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failed event is sent from the Berkeley DB library.
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<p>
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This event callback is received in a replication manager subordinate
|
|
process when it fails to take over as the replication process and
|
|
all replication manager threads in it are stopped unexpectedly.</div>
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</li>
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<h4>handleRepClientEvent</h4>
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<pre class="methodSignature">void handleRepClientEvent()</pre>
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<div class="block">A callback function to be called when a Replication Client event is sent
|
|
from the Berkeley DB library.
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<p>
|
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This event callback is received when this member of a replication group is
|
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now a client site.</div>
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<h4>handleRepConnectBrokenEvent</h4>
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<pre class="methodSignature">void handleRepConnectBrokenEvent()</pre>
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<div class="block">A callback function to be called when a Replication connect broken event
|
|
is sent from the Berkeley DB library.
|
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<p>
|
|
This event callback is received when a previously established connection
|
|
has been broken.</div>
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<h4>handleRepConnectEstablishedEvent</h4>
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<pre class="methodSignature">void handleRepConnectEstablishedEvent()</pre>
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<div class="block">A callback function to be called when a Replication connect established
|
|
event is sent from the Berkeley DB library.
|
|
<p>
|
|
This event callback is received when a connection with a remote site has
|
|
been established.</div>
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</li>
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<h4>handleRepConnectTryFailedEvent</h4>
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<pre class="methodSignature">void handleRepConnectTryFailedEvent()</pre>
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<div class="block">A callback function to be called when a Replication connect retry failed
|
|
event is sent from the Berkeley DB library.
|
|
<p>
|
|
This event callback is received when an attempt to establish a new
|
|
connection to a known remote site failed.</div>
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</li>
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</ul>
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<h4>handleRepDupmasterEvent</h4>
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<pre class="methodSignature">void handleRepDupmasterEvent()</pre>
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<div class="block">A callback function to be called when a Replication Client event is sent
|
|
from the Berkeley DB library.
|
|
<p>
|
|
This event callback is received when a duplicate master site has been
|
|
discovered in the replication group.</div>
|
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</li>
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</ul>
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<h4>handleRepElectedEvent</h4>
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<pre class="methodSignature">void handleRepElectedEvent()</pre>
|
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<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when this site has just won an election. An
|
|
Application using the Base replication API should arrange for a call to
|
|
the <a href="Environment.html#startReplication-com.sleepycat.db.DatabaseEntry-boolean-"><code>Environment.startReplication</code></a> method after receiving this
|
|
event to, reconfigure the local environment as a replication master.
|
|
<p>
|
|
Replication Manager applications may safely igore this event. The
|
|
Replication Manager calls <a href="Environment.html#startReplication-com.sleepycat.db.DatabaseEntry-boolean-"><code>Environment.startReplication</code></a>
|
|
automatically on behalf of the application when appropriate (resulting in
|
|
firing of the <a href="#handleRepMasterEvent--"><code>EventHandler.handleRepMasterEvent</code></a> event).</div>
|
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</li>
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</ul>
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<a name="handleRepElectionFailedEvent--">
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<h4>handleRepElectionFailedEvent</h4>
|
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<pre class="methodSignature">void handleRepElectionFailedEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the local site's attempt to initiate
|
|
or participate in a replication master election failed, due to the lack
|
|
of timely message response from a sufficient number of remote sites.</div>
|
|
</li>
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</ul>
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<a name="handleRepInitDoneEvent--">
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<h4>handleRepInitDoneEvent</h4>
|
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<pre class="methodSignature">void handleRepInitDoneEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when internal initialization has been
|
|
completed.</div>
|
|
</li>
|
|
</ul>
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<a name="handleRepInQueueFullEvent--">
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<h4>handleRepInQueueFullEvent</h4>
|
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<pre class="methodSignature">void handleRepInQueueFullEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when replication Mananger incoming queue
|
|
has reached its maximum threshold.</div>
|
|
</li>
|
|
</ul>
|
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<a name="handleRepJoinFailureEvent--">
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<h4>handleRepJoinFailureEvent</h4>
|
|
<pre class="methodSignature">void handleRepJoinFailureEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the local site could not synchronize
|
|
with the master because an internal initialization was required, but
|
|
internal initialization has been turned off by the <a href="ReplicationConfig.html#AUTOINIT"><code>ReplicationConfig.AUTOINIT</code></a>
|
|
flag to <a href="Environment.html#setReplicationConfig-com.sleepycat.db.ReplicationConfig-boolean-"><code>Environment.setReplicationConfig</code></a></div>
|
|
</li>
|
|
</ul>
|
|
<a name="handleRepLocalSiteRemovedEvent--">
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<h4>handleRepLocalSiteRemovedEvent</h4>
|
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<pre class="methodSignature">void handleRepLocalSiteRemovedEvent()</pre>
|
|
<div class="block">A callback function to be called when a local site removed event is sent
|
|
from the Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the local site has been removed from
|
|
the group.</div>
|
|
</li>
|
|
</ul>
|
|
<a name="handleRepMasterEvent--">
|
|
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<h4>handleRepMasterEvent</h4>
|
|
<pre class="methodSignature">void handleRepMasterEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when this site is now the master site of
|
|
its replication group. It is the application's responsibility to begin
|
|
acting as the master environment.</div>
|
|
</li>
|
|
</ul>
|
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<h4>handleRepMasterFailureEvent</h4>
|
|
<pre class="methodSignature">void handleRepMasterFailureEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the connection to the remote master
|
|
replication site has failed.</div>
|
|
</li>
|
|
</ul>
|
|
<a name="handleRepNewMasterEvent-int-">
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|
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<h4>handleRepNewMasterEvent</h4>
|
|
<pre class="methodSignature">void handleRepNewMasterEvent​(int envId)</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the replication group of which this
|
|
site is a member has just established a new master; the local site is not
|
|
the new master.</div>
|
|
<dl>
|
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
|
<dd><code>envId</code> - The environment ID of the new master site.</dd>
|
|
</dl>
|
|
</li>
|
|
</ul>
|
|
<a name="handleRepPermFailedEvent--">
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<h4>handleRepPermFailedEvent</h4>
|
|
<pre class="methodSignature">void handleRepPermFailedEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the replication manager did not
|
|
receive enough acknowledgements (based on the acknowledgement policy
|
|
configured with <a href="EnvironmentConfig.html#setReplicationManagerAckPolicy-com.sleepycat.db.ReplicationManagerAckPolicy-"><code>EnvironmentConfig.setReplicationManagerAckPolicy</code></a>)
|
|
to ensure a transaction's durability within the replication group. The
|
|
transaction will be flushed to the master's local disk storage for
|
|
durability.</div>
|
|
</li>
|
|
</ul>
|
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<a name="handleRepSiteAddedEvent--">
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<h4>handleRepSiteAddedEvent</h4>
|
|
<pre class="methodSignature">void handleRepSiteAddedEvent()</pre>
|
|
<div class="block">A callback function to be called when a site added event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when a new site has joined the group.</div>
|
|
</li>
|
|
</ul>
|
|
<a name="handleRepSiteRemovedEvent--">
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<h4>handleRepSiteRemovedEvent</h4>
|
|
<pre class="methodSignature">void handleRepSiteRemovedEvent()</pre>
|
|
<div class="block">A callback function to be called when a site removed event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when an existing remote site has been
|
|
removed from the group.</div>
|
|
</li>
|
|
</ul>
|
|
<a name="handleRepStartupDoneEvent--">
|
|
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<h4>handleRepStartupDoneEvent</h4>
|
|
<pre class="methodSignature">void handleRepStartupDoneEvent()</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when the client has completed startup
|
|
synchronization and is now processing live log records received from the
|
|
master.</div>
|
|
</li>
|
|
</ul>
|
|
<a name="handleWriteFailedEvent-int-">
|
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|
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<h4>handleWriteFailedEvent</h4>
|
|
<pre class="methodSignature">void handleWriteFailedEvent​(int errorCode)</pre>
|
|
<div class="block">A callback function to be called when an event is sent from the
|
|
Berkeley DB library.
|
|
<p>
|
|
This event callback is received when a Berkeley DB write to stable storage
|
|
failed.</div>
|
|
<dl>
|
|
<dt><span class="paramLabel">Parameters:</span></dt>
|
|
<dd><code>errorCode</code> - If an operating system specific error code is available for the failure it
|
|
will be passed in the errorCode parameter.</dd>
|
|
</dl>
|
|
</li>
|
|
</ul>
|
|
</li>
|
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</ul>
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|
</li>
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</ul>
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</div>
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