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+<li class="blockList"> +<dl> +<dt>Enclosing class:</dt> +<dd><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></dd> +</dl> +<hr> +<br> +<pre>public abstract class <span class="typeNameLabel">ReduceFn.OnMergeContext</span> +extends <a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a></pre> +<div class="block">Information accessible within <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onMerge-org.apache.beam.runners.core.ReduceFn.OnMergeContext-"><code>ReduceFn.onMerge(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnMergeContext)</code></a>.</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.summary"> +<!-- --> +</a> +<h3>Constructor Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> +<caption><span>Constructors</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">Constructor and Description</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html#OnMergeContext--">OnMergeContext</a></span>()</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> +<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>abstract <a href="../../../../../org/apache/beam/sdk/util/state/MergingStateAccessor.html" title="interface in org.apache.beam.sdk.util.state">MergingStateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html#state--">state</a></span>()</code> +<div class="block">Return the interface for accessing state.</div> +</td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.org.apache.beam.runners.core.ReduceFn.Context"> +<!-- --> +</a> +<h3>Methods inherited from class org.apache.beam.runners.core.<a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a></h3> +<code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html#key--">key</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html#timers--">timers</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html#window--">window</a>, <a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html#windowingStrategy--">windowingStrategy</a></code></li> +</ul> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/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/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#equals-java.lang.Object-" title="class or interface in java.lang">equals</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#hashCode--" title="class or interface in java.lang">hashCode</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 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+<a name="OnMergeContext--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>OnMergeContext</h4> +<pre>public OnMergeContext()</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>Method Detail</h3> +<a name="state--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>state</h4> +<pre>public abstract <a href="../../../../../org/apache/beam/sdk/util/state/MergingStateAccessor.html" title="interface in org.apache.beam.sdk.util.state">MergingStateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a>> state()</pre> +<div class="block">Return the interface for accessing state.</div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html#state--">state</a></code> in class <code><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a></code></dd> +</dl> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="class-use/ReduceFn.OnMergeContext.html">Use</a></li> +<li><a 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+</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>Enclosing class:</dt> +<dd><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></dd> +</dl> +<hr> +<br> +<pre>public abstract class <span class="typeNameLabel">ReduceFn.OnTriggerContext</span> +extends <a 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Description</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html#OnTriggerContext--">OnTriggerContext</a></span>()</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> +<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>abstract void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html#output-OutputT-">output</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">OutputT</a> value)</code> +<div class="block">Output the given value in the current window.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>abstract <a href="../../../../../org/apache/beam/sdk/transforms/windowing/PaneInfo.html" title="class in org.apache.beam.sdk.transforms.windowing">PaneInfo</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html#paneInfo--">paneInfo</a></span>()</code> +<div 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+<ul class="inheritance"> +<li>org.apache.beam.runners.core.ReduceFn.ProcessValueContext</li> +</ul> +</li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt>Enclosing class:</dt> +<dd><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core">ReduceFn</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">InputT</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">OutputT</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a> extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></dd> +</dl> +<hr> +<br> +<pre>public abstract class <span class="typeNameLabel">ReduceFn.ProcessValueContext</span> +extends <a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a></pre> +<div class="block">Information accessible within <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-"><code>ReduceFn.processValue(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.ProcessValueContext)</code></a>.</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.summary"> +<!-- --> +</a> +<h3>Constructor Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> +<caption><span>Constructors</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">Constructor and Description</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html#ProcessValueContext--">ProcessValueContext</a></span>()</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> +<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>abstract org.joda.time.Instant</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html#timestamp--">timestamp</a></span>()</code> +<div class="block">Return the timestamp associated with the value.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>abstract <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">InputT</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html#value--">value</a></span>()</code> +<div 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title="type parameter in ReduceFn">InputT</a> value()</pre> +<div class="block">Return the actual value being processed.</div> +</li> +</ul> +<a name="timestamp--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>timestamp</h4> +<pre>public abstract org.joda.time.Instant timestamp()</pre> +<div class="block">Return the timestamp associated with the value.</div> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a 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class="blockList"> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>K</code> - The type of key being processed.</dd> +<dd><code>InputT</code> - The type of input values associated with the key.</dd> +<dd><code>OutputT</code> - The output type that will be produced for each key.</dd> +<dd><code>W</code> - The type of windows this operates on.</dd> +</dl> +<dl> +<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> +<dl> +<dt>Direct Known Subclasses:</dt> +<dd><a href="../../../../../org/apache/beam/runners/core/SystemReduceFn.html" title="class in org.apache.beam.runners.core">SystemReduceFn</a></dd> +</dl> +<hr> +<br> +<pre>public abstract class <span class="typeNameLabel">ReduceFn<K,InputT,OutputT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></span> +extends <a href="http://docs.oracle.com/javase/7/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/7/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre> +<div class="block">Specification for processing to happen after elements have been grouped by key.</div> +<dl> +<dt><span class="seeLabel">See Also:</span></dt> +<dd><a href="../../../../../serialized-form.html#org.apache.beam.runners.core.ReduceFn">Serialized Form</a></dd> +</dl> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== NESTED CLASS SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="nested.class.summary"> +<!-- --> +</a> +<h3>Nested Class Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation"> +<caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colFirst" scope="col">Modifier and Type</th> +<th class="colLast" scope="col">Class and Description</th> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>class </code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a></span></code> +<div class="block">Information accessible to all the processing methods in this <code>ReduceFn</code>.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>class </code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnMergeContext</a></span></code> +<div class="block">Information accessible within <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onMerge-org.apache.beam.runners.core.ReduceFn.OnMergeContext-"><code>onMerge(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnMergeContext)</code></a>.</div> +</td> +</tr> +<tr class="altColor"> +<td class="colFirst"><code>class </code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a></span></code> +<div class="block">Information accessible within <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"><code>onTrigger(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnTriggerContext)</code></a>.</div> +</td> +</tr> +<tr class="rowColor"> +<td class="colFirst"><code>class </code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html" title="class in org.apache.beam.runners.core">ReduceFn.ProcessValueContext</a></span></code> +<div class="block">Information accessible within <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-"><code>processValue(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.ProcessValueContext)</code></a>.</div> +</td> +</tr> +</table> +</li> +</ul> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.summary"> +<!-- --> +</a> +<h3>Constructor Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> +<caption><span>Constructors</span><span class="tabEnd"> </span></caption> +<tr> +<th class="colOne" scope="col">Constructor and Description</th> +</tr> +<tr class="altColor"> +<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#ReduceFn--">ReduceFn</a></span>()</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</a> +<h3>Method Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> +<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> +<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>abstract void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#clearState-org.apache.beam.runners.core.ReduceFn.Context-">clearState</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a> context)</code> +<div class="block">Called to clear any persisted state that the <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> may be holding.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>abstract <a href="../../../../../org/apache/beam/sdk/util/state/ReadableState.html" title="interface in org.apache.beam.sdk.util.state">ReadableState</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#isEmpty-org.apache.beam.sdk.util.state.StateAccessor-">isEmpty</a></span>(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>> context)</code> +<div class="block">Returns true if the there is no buffered state.</div> +</td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code>abstract void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onMerge-org.apache.beam.runners.core.ReduceFn.OnMergeContext-">onMerge</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnMergeContext</a> context)</code> +<div class="block">Called when windows are merged.</div> +</td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code>abstract void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-">onTrigger</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a> context)</code> +<div class="block">Called when triggers fire.</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/apache/beam/runners/core/ReduceFn.html#prefetchOnMerge-org.apache.beam.sdk.util.state.MergingStateAccessor-">prefetchOnMerge</a></span>(<a href="../../../../../org/apache/beam/sdk/util/state/MergingStateAccessor.html" title="interface in org.apache.beam.sdk.util.state">MergingStateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a>> c)</code> +<div class="block">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onMerge-org.apache.beam.runners.core.ReduceFn.OnMergeContext-"><code>onMerge(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnMergeContext)</code></a> is invoked to provide an opportunity to prefetch any needed + state.</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/apache/beam/runners/core/ReduceFn.html#prefetchOnTrigger-org.apache.beam.sdk.util.state.StateAccessor-">prefetchOnTrigger</a></span>(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>> context)</code> +<div class="block">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"><code>onTrigger(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnTriggerContext)</code></a> is invoked to provide an opportunity to prefetch any needed + state.</div> +</td> +</tr> +<tr id="i6" class="altColor"> +<td class="colFirst"><code>abstract void</code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-">processValue</a></span>(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html" title="class in org.apache.beam.runners.core">ReduceFn.ProcessValueContext</a> c)</code> +<div class="block">Called for each value of type <code>InputT</code> associated with the current key.</div> +</td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/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/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#equals-java.lang.Object-" title="class or interface in java.lang">equals</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#hashCode--" title="class or interface in java.lang">hashCode</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 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+<a name="ReduceFn--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>ReduceFn</h4> +<pre>public ReduceFn()</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>Method Detail</h3> +<a name="processValue-org.apache.beam.runners.core.ReduceFn.ProcessValueContext-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>processValue</h4> +<pre>public abstract void processValue(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.ProcessValueContext.html" title="class in org.apache.beam.runners.core">ReduceFn.ProcessValueContext</a> 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">Called for each value of type <code>InputT</code> associated with the current key.</div> +<dl> +<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> +</ul> +<a name="onMerge-org.apache.beam.runners.core.ReduceFn.OnMergeContext-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>onMerge</h4> +<pre>public abstract void onMerge(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnMergeContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnMergeContext</a> context) + 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">Called when windows are merged.</div> +<dl> +<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> +</ul> +<a name="onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>onTrigger</h4> +<pre>public abstract void onTrigger(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html" title="class in org.apache.beam.runners.core">ReduceFn.OnTriggerContext</a> context) + 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">Called when triggers fire. + + <p>Implementations of <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> should call <a href="../../../../../org/apache/beam/runners/core/ReduceFn.OnTriggerContext.html#output-OutputT-"><code>ReduceFn.OnTriggerContext.output(OutputT)</code></a> to emit + any results that should be included in the pane produced by this trigger firing.</div> +<dl> +<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> +</ul> +<a name="prefetchOnMerge-org.apache.beam.sdk.util.state.MergingStateAccessor-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>prefetchOnMerge</h4> +<pre>public void prefetchOnMerge(<a href="../../../../../org/apache/beam/sdk/util/state/MergingStateAccessor.html" title="interface in org.apache.beam.sdk.util.state">MergingStateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>,<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">W</a>> 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">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onMerge-org.apache.beam.runners.core.ReduceFn.OnMergeContext-"><code>onMerge(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnMergeContext)</code></a> is invoked to provide an opportunity to prefetch any needed + state.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>c</code> - Context to use prefetch from.</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> +</ul> +<a name="prefetchOnTrigger-org.apache.beam.sdk.util.state.StateAccessor-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>prefetchOnTrigger</h4> +<pre>public void prefetchOnTrigger(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>> context)</pre> +<div class="block">Called before <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html#onTrigger-org.apache.beam.runners.core.ReduceFn.OnTriggerContext-"><code>onTrigger(org.apache.beam.runners.core.ReduceFn<K, InputT, OutputT, W>.OnTriggerContext)</code></a> is invoked to provide an opportunity to prefetch any needed + state.</div> +<dl> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>context</code> - Context to use prefetch from.</dd> +</dl> +</li> +</ul> +<a name="clearState-org.apache.beam.runners.core.ReduceFn.Context-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>clearState</h4> +<pre>public abstract void clearState(<a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core">ReduceFn.Context</a> context) + 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">Called to clear any persisted state that the <a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="class in org.apache.beam.runners.core"><code>ReduceFn</code></a> may be holding. This will be + called when the windowing is closing and will receive no future interactions.</div> +<dl> +<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> +</ul> +<a name="isEmpty-org.apache.beam.sdk.util.state.StateAccessor-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>isEmpty</h4> +<pre>public abstract <a href="../../../../../org/apache/beam/sdk/util/state/ReadableState.html" title="interface in org.apache.beam.sdk.util.state">ReadableState</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>> isEmpty(<a href="../../../../../org/apache/beam/sdk/util/state/StateAccessor.html" title="interface in org.apache.beam.sdk.util.state">StateAccessor</a><<a href="../../../../../org/apache/beam/runners/core/ReduceFn.html" title="type parameter in ReduceFn">K</a>> context)</pre> +<div class="block">Returns true if the there is no buffered state.</div> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="class-use/ReduceFn.html">Use</a></li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../../org/apache/beam/runners/core/PushbackSideInputDoFnRunner.html" title="class in org.apache.beam.runners.core"><span class="typeNameLink">Prev Class</span></a></li> +<li><a href="../../../../../org/apache/beam/runners/core/ReduceFn.Context.html" title="class in org.apache.beam.runners.core"><span class="typeNameLink">Next Class</span></a></li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/beam/runners/core/ReduceFn.html" target="_top">Frames</a></li> +<li><a href="ReduceFn.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); + if(window==top) { + allClassesLink.style.display = "block"; + } + else { + allClassesLink.style.display = "none"; + } + //--> +</script> +</div> +<div> +<ul class="subNavList"> +<li>Summary: </li> +<li><a href="#nested.class.summary">Nested</a> | </li> +<li>Field | </li> +<li><a href="#constructor.summary">Constr</a> | </li> +<li><a href="#method.summary">Method</a></li> +</ul> +<ul class="subNavList"> +<li>Detail: </li> +<li>Field | </li> +<li><a href="#constructor.detail">Constr</a> | </li> +<li><a href="#method.detail">Method</a></li> +</ul> +</div> +<a name="skip.navbar.bottom"> +<!-- --> +</a></div> +<!-- ======== END OF BOTTOM NAVBAR ======= --> +<p class="legalCopy"><small>Copyright © 2016 <a href="http://www.apache.org/">The Apache Software Foundation</a>. 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