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<div class="subTitle">net.jini.lookup</div>
<h2 title="Class JoinManager.ProxyRegTask" class="title">Class JoinManager.ProxyRegTask</h2>
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<li><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../org/apache/river/thread/RetryTask.html" title="class in org.apache.river.thread">org.apache.river.thread.RetryTask</a></li>
<li>
<ul class="inheritance">
<li>net.jini.lookup.JoinManager.ProxyRegTask</li>
</ul>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&gt;, <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>, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/concurrent.Future.html?is-external=true" title="class or interface in java.util">java.util.concurrent.Future</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/util/concurrent.RunnableFuture.html?is-external=true" title="class or interface in java.util">java.util.concurrent.RunnableFuture</a>, <a href="../../../org/apache/river/constants/TimeConstants.html" title="interface in org.apache.river.constants">TimeConstants</a>, <a href="../../../org/apache/river/thread/FutureObserver.ObservableFuture.html" title="interface in org.apache.river.thread">FutureObserver.ObservableFuture</a></dd>
</dl>
<dl>
<dt>Enclosing class:</dt>
<dd><a href="../../../net/jini/lookup/JoinManager.html" title="class in net.jini.lookup">JoinManager</a></dd>
</dl>
<hr>
<br>
<pre>private class <span class="typeNameLabel">JoinManager.ProxyRegTask</span>
extends <a href="../../../org/apache/river/thread/RetryTask.html" title="class in org.apache.river.thread">RetryTask</a>
implements <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&gt;</pre>
<div class="block">Abstract base class from which all of the task classes are derived.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</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>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#nRetries">nRetries</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../net/jini/lookup/JoinManager.ProxyReg.html" title="class in net.jini.lookup">JoinManager.ProxyReg</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#proxyReg">proxyReg</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#seqN">seqN</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private long[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#sleepTime">sleepTime</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#tryIndx">tryIndx</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.river.thread.<a href="../../../org/apache/river/thread/RetryTask.html" title="class in org.apache.river.thread">RetryTask</a></h3>
<code><a href="../../../org/apache/river/thread/RetryTask.html#logger">logger</a></code></li>
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<h3>Fields inherited from interface&nbsp;org.apache.river.constants.<a href="../../../org/apache/river/constants/TimeConstants.html" title="interface in org.apache.river.constants">TimeConstants</a></h3>
<code><a href="../../../org/apache/river/constants/TimeConstants.html#DAYS">DAYS</a>, <a href="../../../org/apache/river/constants/TimeConstants.html#HOURS">HOURS</a>, <a href="../../../org/apache/river/constants/TimeConstants.html#MINUTES">MINUTES</a>, <a href="../../../org/apache/river/constants/TimeConstants.html#SECONDS">SECONDS</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#ProxyRegTask-net.jini.lookup.JoinManager.ProxyReg-int-">ProxyRegTask</a></span>(<a href="../../../net/jini/lookup/JoinManager.ProxyReg.html" title="class in net.jini.lookup">JoinManager.ProxyReg</a>&nbsp;proxyReg,
int&nbsp;seqN)</code>
<div class="block">Basic constructor; simply stores the input parameters</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#compareTo-net.jini.lookup.JoinManager.ProxyRegTask-">compareTo</a></span>(<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#dependsOn-net.jini.lookup.JoinManager.ProxyRegTask-">dependsOn</a></span>(<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&nbsp;t)</code>
<div class="block">Returns true if the current instance of this task must be run
after any task already in the task manager queue.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../net/jini/lookup/JoinManager.ProxyReg.html" title="class in net.jini.lookup">JoinManager.ProxyReg</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#getProxyReg--">getProxyReg</a></span>()</code>
<div class="block">Accessor method that returns the instance of <code>ProxyReg</code>
(the lookup service) associated with the task represented by
the current instance of this class.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#getSeqN--">getSeqN</a></span>()</code>
<div class="block">Accessor method that returns the unique sequence number associated
with the task represented by the current instance of this class.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#hasDeps--">hasDeps</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#retryTime--">retryTime</a></span>()</code>
<div class="block">Returns the next absolute time (in milliseconds) at which another
execution of this task should be made (after the previous
attempt has failed).</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#stopTrying-java.lang.Exception-">stopTrying</a></span>(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a>&nbsp;e)</code>
<div class="block">Convenience method called by the child tasks when they encounter
an exception.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html#tryOnce--">tryOnce</a></span>()</code>
<div class="block">Executes the current instance of this task once, queuing it
for retry at a later time and returning <code>false</code>
upon failure.</div>
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<h3>Methods inherited from class&nbsp;org.apache.river.thread.<a href="../../../org/apache/river/thread/RetryTask.html" title="class in org.apache.river.thread">RetryTask</a></h3>
<code><a href="../../../org/apache/river/thread/RetryTask.html#addObserver-org.apache.river.thread.FutureObserver-">addObserver</a>, <a href="../../../org/apache/river/thread/RetryTask.html#attempt--">attempt</a>, <a href="../../../org/apache/river/thread/RetryTask.html#cancel-boolean-">cancel</a>, <a href="../../../org/apache/river/thread/RetryTask.html#get--">get</a>, <a href="../../../org/apache/river/thread/RetryTask.html#get-long-java.util.concurrent.TimeUnit-">get</a>, <a href="../../../org/apache/river/thread/RetryTask.html#isCancelled--">isCancelled</a>, <a href="../../../org/apache/river/thread/RetryTask.html#isDone--">isDone</a>, <a href="../../../org/apache/river/thread/RetryTask.html#run--">run</a>, <a href="../../../org/apache/river/thread/RetryTask.html#startTime--">startTime</a>, <a href="../../../org/apache/river/thread/RetryTask.html#waitFor-long-">waitFor</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<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></h3>
<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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<h3>Field Detail</h3>
<a name="sleepTime">
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<h4>sleepTime</h4>
<pre>private final&nbsp;long[] sleepTime</pre>
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<h4>tryIndx</h4>
<pre>private volatile&nbsp;int tryIndx</pre>
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<a name="nRetries">
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<h4>nRetries</h4>
<pre>private volatile&nbsp;int nRetries</pre>
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<h4>proxyReg</h4>
<pre>private final&nbsp;<a href="../../../net/jini/lookup/JoinManager.ProxyReg.html" title="class in net.jini.lookup">JoinManager.ProxyReg</a> proxyReg</pre>
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<h4>seqN</h4>
<pre>private final&nbsp;int seqN</pre>
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<h4>ProxyRegTask</h4>
<pre>ProxyRegTask(<a href="../../../net/jini/lookup/JoinManager.ProxyReg.html" title="class in net.jini.lookup">JoinManager.ProxyReg</a>&nbsp;proxyReg,
int&nbsp;seqN)</pre>
<div class="block">Basic constructor; simply stores the input parameters</div>
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<pre>public&nbsp;boolean&nbsp;tryOnce()</pre>
<div class="block">Executes the current instance of this task once, queuing it
for retry at a later time and returning <code>false</code>
upon failure. This method attempts to execute all of the tasks
associated with the lookup service referenced in this task's
<code>proxyReg</code> field. Order of execution is important,
and this method executes the tasks in the <code>proxyReg</code>'s
<code>taskList</code> in a FIFO order.
Note that tasks may be added to the <code>taskList</code> of
the <code>proxyReg</code> during the execution of this method.
Upon successfully executing all of the tasks in the
<code>taskList</code>, this method returns <code>true</code>
and the current instance of this task is not executed again.
For each unsuccessful execution of a task in the
<code>taskList</code>, this method returns <code>false</code>,
which causes the task to be scheduled by the
<code>WakeupManager</code> to be executed again at a later
time, as indicated by the value returned by <code>retryTime</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/river/thread/RetryTask.html#tryOnce--">tryOnce</a></code>&nbsp;in class&nbsp;<code><a href="../../../org/apache/river/thread/RetryTask.html" title="class in org.apache.river.thread">RetryTask</a></code></dd>
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<h4>retryTime</h4>
<pre>public&nbsp;long&nbsp;retryTime()</pre>
<div class="block">Returns the next absolute time (in milliseconds) at which another
execution of this task should be made (after the previous
attempt has failed).</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../org/apache/river/thread/RetryTask.html#retryTime--">retryTime</a></code>&nbsp;in class&nbsp;<code><a href="../../../org/apache/river/thread/RetryTask.html" title="class in org.apache.river.thread">RetryTask</a></code></dd>
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<h4>dependsOn</h4>
<pre>public&nbsp;boolean&nbsp;dependsOn(<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&nbsp;t)</pre>
<div class="block">Returns true if the current instance of this task must be run
after any task already in the task manager queue.
It is important that when the join manager is constructed with
a <code>null</code> service ID (where it is desired that
a unique service ID be generated on the service's behalf),
that only the first task in the task manager's queue be run; no
other tasks in the queue should be run while that first task
is running. This is because the first sub-task executed by
the first main task in the task manager's queue will always be
a <code>RegisterTask</code>. And during the execution of that
first sub-task (if the service ID has not yet been set), the
service ID generated by the associated lookup service is retrieved
and stored for use in all future lookup service registration
tasks, Once the service ID is set by that first registration
sub-task, all future main tasks (and their associated registration
sub-tasks) can be run in parallel; each using the same service ID.
If this is not done, then the registration sub-tasks would be
run in parallel, each assigning a different ID to the service.
This method guarantees that until the service's ID is set,
only one registration sub-task is run; that is, one task
doesn't start until the currently running task has completed,
and a non-<code>null</code> service ID is assigned to the service.
Executing the main tasks sequentially until the service ID is
retrieved and stored must also be guaranteed because the currently
running registration task may fail to register the service
(because of a <code>RemoteException</code>), and thus may fail
to obtain an ID for the service. This method guarantees then
that each main task (and thus, each registration sub-task) will
run in sequence until one of those tasks completes successfully;
and from that point on, this method guarantees that all other
queued tasks will run in parallel.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>tasks</code> - the tasks with which to compare the current task</dd>
<dd><code>size</code> - elements with index less than size are considered</dd>
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<h4>hasDeps</h4>
<pre>public&nbsp;boolean&nbsp;hasDeps()</pre>
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<h4>getProxyReg</h4>
<pre>public&nbsp;<a href="../../../net/jini/lookup/JoinManager.ProxyReg.html" title="class in net.jini.lookup">JoinManager.ProxyReg</a>&nbsp;getProxyReg()</pre>
<div class="block">Accessor method that returns the instance of <code>ProxyReg</code>
(the lookup service) associated with the task represented by
the current instance of this class.</div>
</li>
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<h4>getSeqN</h4>
<pre>public&nbsp;int&nbsp;getSeqN()</pre>
<div class="block">Accessor method that returns the unique sequence number associated
with the task represented by the current instance of this class.</div>
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<h4>stopTrying</h4>
<pre>protected&nbsp;boolean&nbsp;stopTrying(<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a>&nbsp;e)</pre>
<div class="block">Convenience method called by the child tasks when they encounter
an exception. If the given exception indicates that retrying the
task would definitely fail, or if the maximum allowable number
of retries of the task has been exceeded, then this method will
do the following:
- remove all pending tasks that are to be run after this task
- cancel this task
- discard the look service associated with this task
- return <code>true</code> (which stops the wakeup manager
from retrying this task
otherwise, this method returns <code>false</code>, which indicates
that the wakeup manager should not stop trying to successfully
execute the task.</div>
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<h4>compareTo</h4>
<pre>public&nbsp;int&nbsp;compareTo(<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&nbsp;o)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true#compareTo-T-" title="class or interface in java.lang">compareTo</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../net/jini/lookup/JoinManager.ProxyRegTask.html" title="class in net.jini.lookup">JoinManager.ProxyRegTask</a>&gt;</code></dd>
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<p class="legalCopy"><small>Copyright 2007-2013, multiple authors.<br>Licensed under the <a href=http://www.apache.org/licenses/LICENSE-2.0 target=child >Apache License, Version 2.0</a>, see the <a href=../../../doc-files/NOTICE target=child >NOTICE</a> file for attributions.</small></p>
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