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| <div class="subTitle">org.eclipse.persistence.sessions.coordination</div> |
| <h2 title="Interface CommandProcessor" class="title">Interface CommandProcessor</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
| <ul class="blockList"> |
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| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd>org.eclipse.persistence.internal.sessions.AbstractSession, <a href="../../../../../org/eclipse/persistence/sessions/server/ClientSession.html" title="class in org.eclipse.persistence.sessions.server">ClientSession</a>, org.eclipse.persistence.internal.sessions.DatabaseSessionImpl, <a href="../../../../../org/eclipse/persistence/sessions/remote/DistributedSession.html" title="class in org.eclipse.persistence.sessions.remote">DistributedSession</a>, <a href="../../../../../org/eclipse/persistence/sessions/remote/RemoteSession.html" title="class in org.eclipse.persistence.sessions.remote">RemoteSession</a>, <a href="../../../../../org/eclipse/persistence/sessions/server/ServerSession.html" title="class in org.eclipse.persistence.sessions.server">ServerSession</a>, <a href="../../../../../org/eclipse/persistence/sessions/broker/SessionBroker.html" title="class in org.eclipse.persistence.sessions.broker">SessionBroker</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public interface <span class="typeNameLabel">CommandProcessor</span></pre> |
| <div class="block"><p> |
| <b>Purpose</b>: Defines a pluggable interface for EclipseLink sessions and EclipseLink |
| applications to be able to be on the receiving end of EclipseLink command objects. |
| <p> |
| <b>Description</b>: This interface represents the entity that both initiates |
| (on the sending end) and processes (on the receiving end) remote commands. |
| The implementation classes of this interface should be set on the CommandManager |
| so that it can be invoked to process command messages as they get received |
| from other remote command managers in the TopLink cluster. When the implementing |
| class wants to send a remote command to other CommandProcessors then it invokes |
| the CommandManager to do so. |
| When running this remote command service in a EclipseLink application then the |
| the Session class should be used as the implementation class for this interface. |
| When running in a non-TopLink application then the application should provide |
| the implementation class.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/eclipse/persistence/sessions/coordination/Command.html" title="class in org.eclipse.persistence.sessions.coordination"><code>Command</code></a>, |
| <a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandManager.html" title="interface in org.eclipse.persistence.sessions.coordination"><code>CommandManager</code></a></dd> |
| <dt><span class="simpleTagLabel">Author:</span></dt> |
| <dd>Steven Vo</dd> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>OracleAS TopLink 10<i>g</i> (9.0.4)</dd> |
| </dl> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#LOG_DEBUG">LOG_DEBUG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#LOG_ERROR">LOG_ERROR</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#LOG_INFO">LOG_INFO</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#LOG_WARNING">LOG_WARNING</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#endOperationProfile-java.lang.String-">endOperationProfile</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> operationName)</code> |
| <div class="block">Profile the operation.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandManager.html" title="interface in org.eclipse.persistence.sessions.coordination">CommandManager</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#getCommandManager--">getCommandManager</a></span>()</code> |
| <div class="block">PUBLIC: |
| Return the CommandManager that will invoke this CommandProcessor to process |
| a command, and can be used to send remote commands out to other |
| CommandProcessors in the cluster.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#handleException-java.lang.RuntimeException-">handleException</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a> exception)</code> |
| <div class="block">PUBLIC: |
| Allow the implementation class to handle an exception thrown in in the remote |
| command service.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#incrementProfile-java.lang.String-">incrementProfile</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> counter)</code> |
| <div class="block">Log the profile event.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#logMessage-int-java.lang.String-">logMessage</a></span>(int logLevel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> message)</code> |
| <div class="block">PUBLIC: |
| Log a message to the application log output stream.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#processCommand-java.lang.Object-">processCommand</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> command)</code> |
| <div class="block">PUBLIC: |
| Invoked by the CommandManager after it has received a Command object and |
| has converted it to the application command format.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#setCommandManager-org.eclipse.persistence.sessions.coordination.CommandManager-">setCommandManager</a></span>(<a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandManager.html" title="interface in org.eclipse.persistence.sessions.coordination">CommandManager</a> commandManager)</code> |
| <div class="block">PUBLIC: |
| Set the CommandManager that will invoke this CommandProcessor to process |
| a command, and can be used to send remote commands out to other |
| CommandProcessors in the cluster.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#shouldLogMessages-int-">shouldLogMessages</a></span>(int logLevel)</code> |
| <div class="block">PUBLIC: |
| Determine whether messages at the specified log level should be logged.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#startOperationProfile-java.lang.String-">startOperationProfile</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> operationName)</code> |
| <div class="block">Profile the operation.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandProcessor.html#updateProfile-java.lang.String-java.lang.Object-">updateProfile</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> info, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> value)</code> |
| <div class="block">Log the profile event.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>LOG_DEBUG</h4> |
| <pre>static final int LOG_DEBUG</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.eclipse.persistence.sessions.coordination.CommandProcessor.LOG_DEBUG">Constant Field Values</a></dd> |
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| <h4>LOG_INFO</h4> |
| <pre>static final int LOG_INFO</pre> |
| <dl> |
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| <dd><a href="../../../../../constant-values.html#org.eclipse.persistence.sessions.coordination.CommandProcessor.LOG_INFO">Constant Field Values</a></dd> |
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| <h4>LOG_WARNING</h4> |
| <pre>static final int LOG_WARNING</pre> |
| <dl> |
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| <dd><a href="../../../../../constant-values.html#org.eclipse.persistence.sessions.coordination.CommandProcessor.LOG_WARNING">Constant Field Values</a></dd> |
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| <h4>LOG_ERROR</h4> |
| <pre>static final int LOG_ERROR</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.eclipse.persistence.sessions.coordination.CommandProcessor.LOG_ERROR">Constant Field Values</a></dd> |
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| <!-- ============ METHOD DETAIL ========== --> |
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| </a> |
| <h3>Method Detail</h3> |
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| <h4>processCommand</h4> |
| <pre>void processCommand(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> command)</pre> |
| <div class="block">PUBLIC: |
| Invoked by the CommandManager after it has received a Command object and |
| has converted it to the application command format.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>command</code> - Application formatted command to be processed</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getCommandManager--"> |
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| </a> |
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| <h4>getCommandManager</h4> |
| <pre><a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandManager.html" title="interface in org.eclipse.persistence.sessions.coordination">CommandManager</a> getCommandManager()</pre> |
| <div class="block">PUBLIC: |
| Return the CommandManager that will invoke this CommandProcessor to process |
| a command, and can be used to send remote commands out to other |
| CommandProcessors in the cluster.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The remote command manager responsible for this CommandProcessor</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setCommandManager-org.eclipse.persistence.sessions.coordination.CommandManager-"> |
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| <h4>setCommandManager</h4> |
| <pre>void setCommandManager(<a href="../../../../../org/eclipse/persistence/sessions/coordination/CommandManager.html" title="interface in org.eclipse.persistence.sessions.coordination">CommandManager</a> commandManager)</pre> |
| <div class="block">PUBLIC: |
| Set the CommandManager that will invoke this CommandProcessor to process |
| a command, and can be used to send remote commands out to other |
| CommandProcessors in the cluster.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>commandManager</code> - The remote command manager responsible for this CommandProcessor</dd> |
| </dl> |
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| </ul> |
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| <h4>shouldLogMessages</h4> |
| <pre>boolean shouldLogMessages(int logLevel)</pre> |
| <div class="block">PUBLIC: |
| Determine whether messages at the specified log level should be logged. |
| This will be invoked by the CommandManager as a short-circuiting mechanism |
| to calling logMessage().</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logLevel</code> - A log constant that is one of LOG_ERROR, LOG_WARNING, LOG_INFO, LOG_DEBUG</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>True if a message at the specified level should be logged and false if it should not</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>logMessage</h4> |
| <pre>void logMessage(int logLevel, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> message)</pre> |
| <div class="block">PUBLIC: |
| Log a message to the application log output stream. If the specified log level |
| is lower than the level configured in the CommandProcessor then the message |
| should not be logged. The implementation class must map its logging system to |
| the four supported levels: Error, Warning, Info and Debug.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logLevel</code> - A log constant that is one of LOG_ERROR, LOG_WARNING, LOG_INFO, LOG_DEBUG</dd> |
| <dd><code>message</code> - The message String that is to be logged</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>incrementProfile</h4> |
| <pre>void incrementProfile(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> counter)</pre> |
| <div class="block">Log the profile event.</div> |
| </li> |
| </ul> |
| <a name="updateProfile-java.lang.String-java.lang.Object-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>updateProfile</h4> |
| <pre>void updateProfile(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> info, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> value)</pre> |
| <div class="block">Log the profile event.</div> |
| </li> |
| </ul> |
| <a name="startOperationProfile-java.lang.String-"> |
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| <h4>startOperationProfile</h4> |
| <pre>void startOperationProfile(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> operationName)</pre> |
| <div class="block">Profile the operation.</div> |
| </li> |
| </ul> |
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| <h4>endOperationProfile</h4> |
| <pre>void endOperationProfile(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> operationName)</pre> |
| <div class="block">Profile the operation.</div> |
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| <h4>handleException</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> handleException(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a> exception)</pre> |
| <div class="block">PUBLIC: |
| Allow the implementation class to handle an exception thrown in in the remote |
| command service. The implementation may choose to simply rethrow the |
| exception if it does not want to handle it. |
| |
| NOTE: Handlers that simply ignore exceptions may cause unexpected behavior |
| that can be detrimental to the application and difficult to debug.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>exception</code> - The exception being thrown</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>An object that is not currently used</dd> |
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