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| <h2 title="Class FiddlerImpl.ChangedEventTask" class="title">Class FiddlerImpl.ChangedEventTask</h2> | |
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| <li>org.apache.river.fiddler.FiddlerImpl.ChangedEventTask</li> | |
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| <pre>private final class <span class="typeNameLabel">FiddlerImpl.ChangedEventTask</span> | |
| extends <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> | |
| implements <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang">Runnable</a></pre> | |
| <div class="block">This class represents a <code>Task</code> object that is placed | |
| in the <code>TaskManager</code> queue for processing in the thread | |
| pool. An instance of this class is placed on the task queue when a | |
| <code>DiscoveryEvent</code> instance indicating a changed event | |
| is received from the local discovery process. | |
| <p> | |
| The <code>run</code> method of this class will process event | |
| information resulting from a change in the state of the member | |
| groups of one or more lookup services (registrars). This task | |
| analyzes the group information in the event and, based on that | |
| information, determines which active registrations are no longer | |
| interested in the registrars referenced in the event. A | |
| <code>RemoteDiscoveryEvent</code> indicating a discarded event | |
| will be sent to each active registration that has lost interest | |
| in any of the registrars of the event.</div> | |
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| <td class="colFirst"><code><a href="../../../../net/jini/discovery/DiscoveryEvent.html" title="class in net.jini.discovery">DiscoveryEvent</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/fiddler/FiddlerImpl.ChangedEventTask.html#event">event</a></span></code> | |
| <div class="block">The local event sent by the discovery manager.</div> | |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/river/fiddler/FiddlerImpl.ChangedEventTask.html#ChangedEventTask-net.jini.discovery.DiscoveryEvent-">ChangedEventTask</a></span>(<a href="../../../../net/jini/discovery/DiscoveryEvent.html" title="class in net.jini.discovery">DiscoveryEvent</a> event)</code> | |
| <div class="block">Constructs an instance of this class and stores the event</div> | |
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| <td class="colFirst"><code>private <a href="http://docs.oracle.com/javase/6/docs/api/java/util/HashSet.html?is-external=true" title="class or interface in java.util">HashSet</a></code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/fiddler/FiddlerImpl.ChangedEventTask.html#maybeSendDiscardedEvent-org.apache.river.fiddler.FiddlerImpl.RegistrationInfo-java.util.Map-java.util.Map-">maybeSendDiscardedEvent</a></span>(<a href="../../../../org/apache/river/fiddler/FiddlerImpl.RegistrationInfo.html" title="class in org.apache.river.fiddler">FiddlerImpl.RegistrationInfo</a> regInfo, | |
| <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a> groupsMap, | |
| <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a> locatorMap)</code> | |
| <div class="block">This method determines, based on the current state of the | |
| <code>regInfo</code> parameter, whether or not to send a | |
| remote discarded event to the regInfo's listener, and then builds | |
| and sends the event if appropriate.</div> | |
| </td> | |
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| <tr id="i1" class="rowColor"> | |
| <td class="colFirst"><code>void</code></td> | |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/river/fiddler/FiddlerImpl.ChangedEventTask.html#run--">run</a></span>()</code> | |
| <div class="block">This method processes the local discovery event information and | |
| determines, based on the current state of each active | |
| registration, to which such registration the appropriate | |
| <code>RemoteDiscoveryEvent</code> should be sent.</div> | |
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| <code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> | |
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| <pre>public final <a href="../../../../net/jini/discovery/DiscoveryEvent.html" title="class in net.jini.discovery">DiscoveryEvent</a> event</pre> | |
| <div class="block">The local event sent by the discovery manager.</div> | |
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| <h4>ChangedEventTask</h4> | |
| <pre>public ChangedEventTask(<a href="../../../../net/jini/discovery/DiscoveryEvent.html" title="class in net.jini.discovery">DiscoveryEvent</a> event)</pre> | |
| <div class="block">Constructs an instance of this class and stores the event</div> | |
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| <pre>public void run()</pre> | |
| <div class="block">This method processes the local discovery event information and | |
| determines, based on the current state of each active | |
| registration, to which such registration the appropriate | |
| <code>RemoteDiscoveryEvent</code> should be sent. After making | |
| the determination, the remote event appropriate for each | |
| registration is constructed and sent.</div> | |
| <dl> | |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> | |
| <dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Runnable.html?is-external=true#run--" title="class or interface in java.lang">run</a></code> in interface <code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang">Runnable</a></code></dd> | |
| </dl> | |
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| <!-- --> | |
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| <h4>maybeSendDiscardedEvent</h4> | |
| <pre>private <a href="http://docs.oracle.com/javase/6/docs/api/java/util/HashSet.html?is-external=true" title="class or interface in java.util">HashSet</a> maybeSendDiscardedEvent(<a href="../../../../org/apache/river/fiddler/FiddlerImpl.RegistrationInfo.html" title="class in org.apache.river.fiddler">FiddlerImpl.RegistrationInfo</a> regInfo, | |
| <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a> groupsMap, | |
| <a href="http://docs.oracle.com/javase/6/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a> locatorMap)</pre> | |
| <div class="block">This method determines, based on the current state of the | |
| <code>regInfo</code> parameter, whether or not to send a | |
| remote discarded event to the regInfo's listener, and then builds | |
| and sends the event if appropriate. This method is called in | |
| response to the receipt of a changed event from the discovery | |
| manager. | |
| <p> | |
| Such an event may indicate what is referred to as a | |
| "passive, no interest" discard; passive because the event | |
| resulted from action taken by the discovery manager rather than | |
| the client, and no interest because the discovery manager sends | |
| such an event when it determines that one or more of the | |
| previously discovered registrars - although still reachable - | |
| have changed their member groups in such a way that they may | |
| now be of no interest to one or more of the client registrations. | |
| <p> | |
| Note that changed events can be sent for registrars having a | |
| locator and member groups that the current regInfo never asked | |
| to be discovered. This can happen because some other regInfo | |
| asked that the registrar's locator or groups be discovered. | |
| <p> | |
| If a particular registrar is contained in the discovered set | |
| of the given regInfo, then we know that that regInfo must | |
| have requested discovery of the registrar (through either | |
| locator or group discovery). If the registrar is not contained | |
| in that set, then there's no need to proceed with the processing | |
| of the registrar since we don't want to send a discarded event | |
| to a regInfo that was never interested in that registrar in the | |
| first place. | |
| <p> | |
| If the locator of the registrar is contained in the regInfo's | |
| set of locators to discover, then that regInfo is considered | |
| "still interested" in the registrar; and so no discarded event | |
| is sent to the regInfo. | |
| <p> | |
| Thus, a discarded event is sent to the given regInfo only | |
| if the regInfo is not interested in discovering the registrar | |
| through locator discovery, and the registrar's member groups have | |
| changed in such a way that it now belongs to groups that | |
| the regInfo is not interested in discovering and joining.</div> | |
| <dl> | |
| <dt><span class="paramLabel">Parameters:</span></dt> | |
| <dd><code>regInfo</code> - the data structure record corresponding to the | |
| registration whose listener will receive the event</dd> | |
| <dd><code>groupsMap</code> - mapping from the registrars referenced in the | |
| just-received event to their corresponding set of | |
| member groups</dd> | |
| <dd><code>locatorMap</code> - mapping from the registrars referenced in the | |
| just-received event to their corresponding locator</dd> | |
| <dt><span class="returnLabel">Returns:</span></dt> | |
| <dd>the registrars that were discarded for the given regInfo</dd> | |
| </dl> | |
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