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Posted to commits@beam.apache.org by jb...@apache.org on 2017/01/04 09:57:03 UTC

[15/52] [partial] beam-site git commit: Add 0.4.0 release

http://git-wip-us.apache.org/repos/asf/beam-site/blob/0c7c6b2a/src/documentation/sdks/javadoc/0.4.0/org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html
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+<li><a href="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
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+<ul class="subNavList">
+<li>Summary:&nbsp;</li>
+<li><a href="#nested.classes.inherited.from.class.org.apache.beam.runners.core.triggers.TriggerStateMachine">Nested</a>&nbsp;|&nbsp;</li>
+<li><a href="#fields.inherited.from.class.org.apache.beam.runners.core.triggers.TriggerStateMachine">Field</a>&nbsp;|&nbsp;</li>
+<li>Constr&nbsp;|&nbsp;</li>
+<li><a href="#method.summary">Method</a></li>
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+<ul class="subNavList">
+<li>Detail:&nbsp;</li>
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+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.beam.runners.core.triggers</div>
+<h2 title="Class RepeatedlyStateMachine" class="title">Class RepeatedlyStateMachine</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li><a href="http://docs.oracle.com/javase/7/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/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">org.apache.beam.runners.core.triggers.TriggerStateMachine</a></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.beam.runners.core.triggers.RepeatedlyStateMachine</li>
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+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">RepeatedlyStateMachine</span>
+extends <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></pre>
+<div class="block">Repeat a trigger, either until some condition is met or forever.
+
+ <p>For example, to fire after the end of the window, and every time late data arrives:
+ <pre> <code>
+     Repeatedly.forever(AfterWatermark.isPastEndOfWindow());
+ </code> </pre>
+
+ <p><code>Repeatedly.forever(someTrigger)</code> behaves like an infinite
+ <code>AfterEach.inOrder(someTrigger, someTrigger, someTrigger, ...)</code>.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../../serialized-form.html#org.apache.beam.runners.core.triggers.RepeatedlyStateMachine">Serialized Form</a></dd>
+</dl>
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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>static <a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html" title="class in org.apache.beam.runners.core.triggers">RepeatedlyStateMachine</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html#forever-org.apache.beam.runners.core.triggers.TriggerStateMachine-">forever</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a>&nbsp;repeated)</code>
+<div class="block">Create a composite trigger that repeatedly executes the trigger <code>repeated</code>, firing each
+ time it fires and ignoring any indications to finish.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html#onElement-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnElementContext-">onElement</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnElementContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnElementContext</a>&nbsp;c)</code>
+<div class="block">Called every time an element is incorporated into a window.</div>
+</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html#onFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">onFire</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerContext</a>&nbsp;context)</code>
+<div class="block">Adjusts the state of the trigger to be ready for the next pane.</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/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-">onMerge</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnMergeContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnMergeContext</a>&nbsp;c)</code>
+<div class="block">Called immediately after windows have been merged.</div>
+</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html#shouldFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">shouldFire</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerContext</a>&nbsp;context)</code>
+<div class="block">Returns <code>true</code> if the current state of the trigger indicates that its condition
+ is satisfied and it is ready to fire.</div>
+</td>
+</tr>
+<tr id="i5" class="rowColor">
+<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html#toString--">toString</a></span>()</code>&nbsp;</td>
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+<code><a href="http://docs.oracle.com/javase/7/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/7/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/7/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/7/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/7/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/7/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/7/docs/api/java/lang/Object.html?is-ex
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+<h4>forever</h4>
+<pre>public static&nbsp;<a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html" title="class in org.apache.beam.runners.core.triggers">RepeatedlyStateMachine</a>&nbsp;forever(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a>&nbsp;repeated)</pre>
+<div class="block">Create a composite trigger that repeatedly executes the trigger <code>repeated</code>, firing each
+ time it fires and ignoring any indications to finish.
+
+ <p>Unless used with <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#orFinally-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnceTriggerStateMachine-"><code>TriggerStateMachine.orFinally(org.apache.beam.runners.core.triggers.TriggerStateMachine.OnceTriggerStateMachine)</code></a> the composite trigger will never
+ finish.</div>
+<dl>
+<dt><span class="paramLabel">Parameters:</span></dt>
+<dd><code>repeated</code> - the trigger to execute repeatedly.</dd>
+</dl>
+</li>
+</ul>
+<a name="onElement-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnElementContext-">
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+<h4>onElement</h4>
+<pre>public&nbsp;void&nbsp;onElement(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnElementContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnElementContext</a>&nbsp;c)
+               throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onElement-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnElementContext-">TriggerStateMachine</a></code></span></div>
+<div class="block">Called every time an element is incorporated into a window.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onElement-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnElementContext-">onElement</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
+<dt><span class="throwsLabel">Throws:</span></dt>
+<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
+</dl>
+</li>
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+<h4>onMerge</h4>
+<pre>public&nbsp;void&nbsp;onMerge(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnMergeContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnMergeContext</a>&nbsp;c)
+             throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-">TriggerStateMachine</a></code></span></div>
+<div class="block">Called immediately after windows have been merged.
+
+ <p>Leaf triggers should update their state by inspecting their status and any state in the
+ merging windows. Composite triggers should update their state by calling <a href="../../../../../../org/apache/beam/runners/core/triggers/ExecutableTriggerStateMachine.html#invokeOnMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-"><code>ExecutableTriggerStateMachine.invokeOnMerge(org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext)</code></a> on their sub-triggers, and applying appropriate
+ logic.
+
+ <p>A trigger such as <a href="../../../../../../org/apache/beam/runners/core/triggers/AfterWatermarkStateMachine.html#pastEndOfWindow--"><code>AfterWatermarkStateMachine.pastEndOfWindow()</code></a> may no longer be
+ finished; it is the responsibility of the trigger itself to record this fact. It is forbidden
+ for a trigger to become finished due to <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-"><code>TriggerStateMachine.onMerge(org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext)</code></a>, as it has not yet fired the pending
+ elements that led to it being ready to fire.
+
+ <p>The implementation does not need to clear out any state associated with the old windows.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-">onMerge</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
+<dt><span class="throwsLabel">Throws:</span></dt>
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+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">TriggerStateMachine</a></code></span></div>
+<div class="block">Adjusts the state of the trigger to be ready for the next pane. For example, a
+ <a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html" title="class in org.apache.beam.runners.core.triggers"><code>RepeatedlyStateMachine</code></a> trigger will reset its inner trigger, since it has fired.
+
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+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">onFire</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
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+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#toString--">toString</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
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+<li><a href="#fields.inherited.from.class.org.apache.beam.runners.core.triggers.TriggerStateMachine">Field</a>&nbsp;|&nbsp;</li>
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+<li><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
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+<li>Detail:&nbsp;</li>
+<li>Field&nbsp;|&nbsp;</li>
+<li><a href="#constructor.detail">Constr</a>&nbsp;|&nbsp;</li>
+<li><a href="#method.detail">Method</a></li>
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+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.beam.runners.core.triggers</div>
+<h2 title="Class ReshuffleTriggerStateMachine" class="title">Class ReshuffleTriggerStateMachine</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li><a href="http://docs.oracle.com/javase/7/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/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">org.apache.beam.runners.core.triggers.TriggerStateMachine</a></li>
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+<ul class="inheritance">
+<li>org.apache.beam.runners.core.triggers.ReshuffleTriggerStateMachine</li>
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+<dt>All Implemented Interfaces:</dt>
+<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public class <span class="typeNameLabel">ReshuffleTriggerStateMachine</span>
+extends <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></pre>
+<div class="block">The trigger used with <a href="../../../../../../org/apache/beam/sdk/util/Reshuffle.html" title="class in org.apache.beam.sdk.util"><code>Reshuffle</code></a> which triggers on every element
+ and never buffers state.</div>
+<dl>
+<dt><span class="seeLabel">See Also:</span></dt>
+<dd><a href="../../../../../../serialized-form.html#org.apache.beam.runners.core.triggers.ReshuffleTriggerStateMachine">Serialized Form</a></dd>
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+<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.MergingTriggerInfo.html" title="interface in org.apache.beam.runners.core.triggers">TriggerStateMachine.MergingTriggerInfo</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnceTriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnceTriggerStateMachine</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnElementContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnElementContext</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnMergeContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnMergeContext</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerContext.html" title="class in org.apache.beam.runners.core.tr
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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="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html#ReshuffleTriggerStateMachine--">ReshuffleTriggerStateMachine</a></span>()</code>&nbsp;</td>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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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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+<tr id="i0" class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html#onElement-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnElementContext-">onElement</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnElementContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnElementContext</a>&nbsp;c)</code>
+<div class="block">Called every time an element is incorporated into a window.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html#onFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">onFire</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerContext</a>&nbsp;context)</code>
+<div class="block">Adjusts the state of the trigger to be ready for the next pane.</div>
+</td>
+</tr>
+<tr id="i2" class="altColor">
+<td class="colFirst"><code>void</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-">onMerge</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnMergeContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.OnMergeContext</a>&nbsp;c)</code>
+<div class="block">Called immediately after windows have been merged.</div>
+</td>
+</tr>
+<tr id="i3" class="rowColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html#shouldFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">shouldFire</a></span>(<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerContext.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerContext</a>&nbsp;context)</code>
+<div class="block">Returns <code>true</code> if the current state of the trigger indicates that its condition
+ is satisfied and it is ready to fire.</div>
+</td>
+</tr>
+<tr id="i4" class="altColor">
+<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/ReshuffleTriggerStateMachine.html#toString--">toString</a></span>()</code>&nbsp;</td>
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+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-">TriggerStateMachine</a></code></span></div>
+<div class="block">Called immediately after windows have been merged.
+
+ <p>Leaf triggers should update their state by inspecting their status and any state in the
+ merging windows. Composite triggers should update their state by calling <a href="../../../../../../org/apache/beam/runners/core/triggers/ExecutableTriggerStateMachine.html#invokeOnMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-"><code>ExecutableTriggerStateMachine.invokeOnMerge(org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext)</code></a> on their sub-triggers, and applying appropriate
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+
+ <p>A trigger such as <a href="../../../../../../org/apache/beam/runners/core/triggers/AfterWatermarkStateMachine.html#pastEndOfWindow--"><code>AfterWatermarkStateMachine.pastEndOfWindow()</code></a> may no longer be
+ finished; it is the responsibility of the trigger itself to record this fact. It is forbidden
+ for a trigger to become finished due to <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onMerge-org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext-"><code>TriggerStateMachine.onMerge(org.apache.beam.runners.core.triggers.TriggerStateMachine.OnMergeContext)</code></a>, as it has not yet fired the pending
+ elements that led to it being ready to fire.
+
+ <p>The implementation does not need to clear out any state associated with the old windows.</div>
+<dl>
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+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#shouldFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">TriggerStateMachine</a></code></span></div>
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+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#shouldFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">shouldFire</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
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+<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">TriggerStateMachine</a></code></span></div>
+<div class="block">Adjusts the state of the trigger to be ready for the next pane. For example, a
+ <a href="../../../../../../org/apache/beam/runners/core/triggers/RepeatedlyStateMachine.html" title="class in org.apache.beam.runners.core.triggers"><code>RepeatedlyStateMachine</code></a> trigger will reset its inner trigger, since it has fired.
+
+ <p>If the trigger is finished, it is the responsibility of the trigger itself to
+ record that fact via the <code>context</code>.</div>
+<dl>
+<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#onFire-org.apache.beam.runners.core.triggers.TriggerStateMachine.TriggerContext-">onFire</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
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+<dl>
+<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
+<dd><code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html#toString--">toString</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></code></dd>
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+<li><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
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+<li>Summary:&nbsp;</li>
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+<li><a href="#fields.inherited.from.class.org.apache.beam.runners.core.triggers.TriggerStateMachine">Field</a>&nbsp;|&nbsp;</li>
+<li><a href="#constructor.summary">Constr</a>&nbsp;|&nbsp;</li>
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+<li><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.OnceTriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
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+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.beam.runners.core.triggers</div>
+<h2 title="Interface TriggerStateMachine.MergingTriggerInfo" class="title">Interface TriggerStateMachine.MergingTriggerInfo</h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl>
+<dt>All Superinterfaces:</dt>
+<dd><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html" title="interface in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerInfo</a></dd>
+</dl>
+<dl>
+<dt>Enclosing class:</dt>
+<dd><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.html" title="class in org.apache.beam.runners.core.triggers">TriggerStateMachine</a></dd>
+</dl>
+<hr>
+<br>
+<pre>public static interface <span class="typeNameLabel">TriggerStateMachine.MergingTriggerInfo</span>
+extends <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html" title="interface in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerInfo</a></pre>
+<div class="block">Interact with properties of the trigger being executed, with extensions to deal with the
+ merging windows.</div>
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+</ul>
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+<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
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+<tr id="i0" class="altColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.MergingTriggerInfo.html#finishedInAllMergingWindows--">finishedInAllMergingWindows</a></span>()</code>
+<div class="block">Return true if the trigger is finished in all windows being merged.</div>
+</td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.MergingTriggerInfo.html#finishedInAnyMergingWindow--">finishedInAnyMergingWindow</a></span>()</code>
+<div class="block">Return true if the trigger is finished in any window being merged.</div>
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+</tr>
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+</a>
+<h3>Methods inherited from interface&nbsp;org.apache.beam.runners.core.triggers.<a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html" title="interface in org.apache.beam.runners.core.triggers">TriggerStateMachine.TriggerInfo</a></h3>
+<code><a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#areAllSubtriggersFinished--">areAllSubtriggersFinished</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#firstUnfinishedSubTrigger--">firstUnfinishedSubTrigger</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#isFinished--">isFinished</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#isFinished-int-">isFinished</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#isMerging--">isMerging</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#resetTree--">resetTree</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#setFinished-boolean-">setFinished</a>,
  <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#setFinished-boolean-int-">setFinished</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#subTrigger-int-">subTrigger</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#subTriggers--">subTriggers</a>, <a href="../../../../../../org/apache/beam/runners/core/triggers/TriggerStateMachine.TriggerInfo.html#unfinishedSubTriggers--">unfinishedSubTriggers</a></code></li>
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+<a name="finishedInAnyMergingWindow--">
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+<h4>finishedInAnyMergingWindow</h4>
+<pre>boolean&nbsp;finishedInAnyMergingWindow()</pre>
+<div class="block">Return true if the trigger is finished in any window being merged.</div>
+</li>
+</ul>
+<a name="finishedInAllMergingWindows--">
+<!--   -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>finishedInAllMergingWindows</h4>
+<pre>boolean&nbsp;finishedInAllMergingWindows()</pre>
+<div class="block">Return true if the trigger is finished in all windows being merged.</div>
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