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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="Interface ReplicationTransport" class="title">Interface ReplicationTransport</h2>
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<pre>public interface <span class="typeNameLabel">ReplicationTransport</span></pre>
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<div class="block">An interface specifying a replication transmit function, which sends
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information to other members of the replication group.</div>
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<td class="colFirst"><code>static int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EID_BROADCAST">EID_BROADCAST</a></span></code></th>
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<td class="colLast">
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<div class="block">A message that should be broadcast to every environment in the
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replication group.</div>
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</td>
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</tr>
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<td class="colFirst"><code>static int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EID_INVALID">EID_INVALID</a></span></code></th>
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<td class="colLast">
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<div class="block">An invalid environment ID, and may be used to initialize environment ID
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variables that are subsequently checked for validity.</div>
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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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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#send-com.sleepycat.db.Environment-com.sleepycat.db.DatabaseEntry-com.sleepycat.db.DatabaseEntry-com.sleepycat.db.LogSequenceNumber-int-boolean-boolean-boolean-boolean-">send</a></span>​(<a href="Environment.html" title="class in com.sleepycat.db">Environment</a> environment,
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<a href="DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</a> control,
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<a href="DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</a> rec,
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<a href="LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</a> lsn,
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int envid,
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boolean noBuffer,
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boolean permanent,
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boolean anywhere,
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boolean isRetry)</code></th>
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<td class="colLast">
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<div class="block">The callback used when Berkeley DB needs to transmit a replication message.</div>
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</td>
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<a name="EID_BROADCAST">
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<h4>EID_BROADCAST</h4>
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<pre>static final int EID_BROADCAST</pre>
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<div class="block">A message that should be broadcast to every environment in the
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replication group. The application may use a true broadcast protocol or
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may send the message in sequence to each machine with which it is in
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communication. In both cases, the sending site should not be asked to
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process the message.</div>
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<dl>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../constant-values.html#com.sleepycat.db.ReplicationTransport.EID_BROADCAST">Constant Field Values</a></dd>
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<h4>EID_INVALID</h4>
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<pre>static final int EID_INVALID</pre>
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<div class="block">An invalid environment ID, and may be used to initialize environment ID
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variables that are subsequently checked for validity.</div>
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<dl>
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<dt><span class="seeLabel">See Also:</span></dt>
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<dd><a href="../../../constant-values.html#com.sleepycat.db.ReplicationTransport.EID_INVALID">Constant Field Values</a></dd>
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<a name="send-com.sleepycat.db.Environment-com.sleepycat.db.DatabaseEntry-com.sleepycat.db.DatabaseEntry-com.sleepycat.db.LogSequenceNumber-int-boolean-boolean-boolean-boolean-">
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<h4>send</h4>
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<pre class="methodSignature">int send​(<a href="Environment.html" title="class in com.sleepycat.db">Environment</a> environment,
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<a href="DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</a> control,
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<a href="DatabaseEntry.html" title="class in com.sleepycat.db">DatabaseEntry</a> rec,
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<a href="LogSequenceNumber.html" title="class in com.sleepycat.db">LogSequenceNumber</a> lsn,
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int envid,
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boolean noBuffer,
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boolean permanent,
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boolean anywhere,
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boolean isRetry)
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throws <a href="DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a></pre>
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<div class="block">The callback used when Berkeley DB needs to transmit a replication message.
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This method must not call back down into Berkeley DB. It must return 0 on
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success and non-zero on failure. If the transmission fails, the message
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being sent is necessary to maintain database integrity, and the local log
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is not configured for synchronous flushing, the local log will be flushed;
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otherwise, any error from the function will be ignored.
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<p></div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>environment</code> - The enclosing database environment handle.
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<p></dd>
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<dd><code>control</code> - The first of the two data elements to be transmitted.
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<p></dd>
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<dd><code>rec</code> - The second of the two data elements to be transmitted.
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<p></dd>
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<dd><code>lsn</code> - If the type of message to be sent has an LSN associated with it,
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then the lsn contains the LSN of the record being sent. This LSN
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can be used to determine that certain records have been processed
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successfully by clients.
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<p></dd>
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<dd><code>envid</code> - A positive integer identifier that specifies the replication
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environment to which the message should be sent.
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<p>
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The value DB_EID_BROADCAST indicates that a message should be
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broadcast to every environment in the replication group. The
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application may use a true broadcast protocol or may send the
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message in sequence to each machine with which it is in
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communication. In both cases, the sending site should not be asked
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to process the message.
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<p></dd>
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<dd><code>noBuffer</code> - The record being sent should be transmitted immediately and not buffered
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or delayed.
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<p></dd>
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<dd><code>permanent</code> - The record being sent is critical for maintaining database integrity
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(for example, the message includes a transaction commit). The
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application should take appropriate action to enforce the reliability
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guarantees it has chosen, such as waiting for acknowledgement from one
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or more clients.
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<p></dd>
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<dd><code>anywhere</code> - The message is a client request that can be satisfied by another client as
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well as by the master.
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<p></dd>
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<dd><code>isRetry</code> - The message is a client request that has already been made and to which no
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response was received.
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<p></dd>
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<dt><span class="returnLabel">Returns:</span></dt>
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<dd>0 on success and non-zero on failure
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<p></dd>
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<dt><span class="throwsLabel">Throws:</span></dt>
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<dd><code><a href="DatabaseException.html" title="class in com.sleepycat.db">DatabaseException</a></code> - if a failure occurs.</dd>
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