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<div class="subTitle">org.apache.beam.sdk.transforms</div>
<h2 title="Class CombineFns.ComposedCombineFnWithContext" class="title">Class CombineFns.ComposedCombineFnWithContext&lt;DataT&gt;</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">org.apache.beam.sdk.transforms.CombineWithContext.CombineFnWithContext</a>&lt;DataT,java.lang.Object[],<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms">CombineFns.CoCombineResult</a>&gt;</li>
<li>
<ul class="inheritance">
<li>org.apache.beam.sdk.transforms.CombineFns.ComposedCombineFnWithContext&lt;DataT&gt;</li>
</ul>
</li>
</ul>
</li>
</ul>
<div class="description">
<ul class="blockList">
<li class="blockList">
<dl>
<dt>All Implemented Interfaces:</dt>
<dd>java.io.Serializable, <a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;DataT,java.lang.Object[],<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms">CombineFns.CoCombineResult</a>&gt;, <a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.RequiresContextInternal.html" title="interface in org.apache.beam.sdk.transforms">CombineWithContext.RequiresContextInternal</a>, <a href="../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></dd>
</dl>
<dl>
<dt>Enclosing class:</dt>
<dd><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.html" title="class in org.apache.beam.sdk.transforms">CombineFns</a></dd>
</dl>
<hr>
<br>
<pre>public static class <span class="typeNameLabel">CombineFns.ComposedCombineFnWithContext&lt;DataT&gt;</span>
extends <a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.CombineFnWithContext</a>&lt;DataT,java.lang.Object[],<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms">CombineFns.CoCombineResult</a>&gt;</pre>
<div class="block">A composed <a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineWithContext.CombineFnWithContext</code></a> that applies multiple <a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineFnWithContexts</code></a>.
<p>For each <a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineWithContext.CombineFnWithContext</code></a> it extracts inputs from <code>DataT</code> with the <code>extractInputFn</code> and combines them, and then it outputs each combined value with a <a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values"><code>TupleTag</code></a> to a <a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms"><code>CombineFns.CoCombineResult</code></a>.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../serialized-form.html#org.apache.beam.sdk.transforms.CombineFns.ComposedCombineFnWithContext">Serialized Form</a></dd>
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<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">&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>
<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>java.lang.Object[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#addInput-java.lang.Object:A-DataT-org.apache.beam.sdk.transforms.CombineWithContext.Context-">addInput</a></span>(java.lang.Object[]&nbsp;accumulator,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>&nbsp;value,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.Context.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.Context</a>&nbsp;c)</code>
<div class="block">Adds the given input value to the given accumulator, returning the new accumulator value.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.lang.Object[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#compact-java.lang.Object:A-org.apache.beam.sdk.transforms.CombineWithContext.Context-">compact</a></span>(java.lang.Object[]&nbsp;accumulator,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.Context.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.Context</a>&nbsp;c)</code>
<div class="block">Returns an accumulator that represents the same logical value as the input accumulator, but
may have a more compact representation.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.Object[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#createAccumulator-org.apache.beam.sdk.transforms.CombineWithContext.Context-">createAccumulator</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.Context.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.Context</a>&nbsp;c)</code>
<div class="block">Returns a new, mutable accumulator value, representing the accumulation of zero input values.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms">CombineFns.CoCombineResult</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#extractOutput-java.lang.Object:A-org.apache.beam.sdk.transforms.CombineWithContext.Context-">extractOutput</a></span>(java.lang.Object[]&nbsp;accumulator,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.Context.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.Context</a>&nbsp;c)</code>
<div class="block">Returns the output value that is the result of combining all the input values represented by
the given accumulator.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>java.lang.reflect.TypeVariable&lt;?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#getAccumTVariable--">getAccumTVariable</a></span>()</code>
<div class="block">Returns the <code>TypeVariable</code> of <code>AccumT</code>.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;java.lang.Object[]&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#getAccumulatorCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">getAccumulatorCoder</a></span>(<a href="../../../../../org/apache/beam/sdk/coders/CoderRegistry.html" title="class in org.apache.beam.sdk.coders">CoderRegistry</a>&nbsp;registry,
<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>&gt;&nbsp;dataCoder)</code>
<div class="block">Returns the <code>Coder</code> to use for accumulator <code>AccumT</code> values, or null if it is not
able to be inferred.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;OutputT&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#getDefaultOutputCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">getDefaultOutputCoder</a></span>(<a href="../../../../../org/apache/beam/sdk/coders/CoderRegistry.html" title="class in org.apache.beam.sdk.coders">CoderRegistry</a>&nbsp;registry,
<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;InputT&gt;&nbsp;inputCoder)</code>
<div class="block">Returns the <code>Coder</code> to use by default for output <code>OutputT</code> values, or null if it
is not able to be inferred.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#getIncompatibleGlobalWindowErrorMessage--">getIncompatibleGlobalWindowErrorMessage</a></span>()</code>
<div class="block">Returns the error message for not supported default values in Combine.globally().</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>java.lang.reflect.TypeVariable&lt;?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#getInputTVariable--">getInputTVariable</a></span>()</code>
<div class="block">Returns the <code>TypeVariable</code> of <code>InputT</code>.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.lang.reflect.TypeVariable&lt;?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#getOutputTVariable--">getOutputTVariable</a></span>()</code>
<div class="block">Returns the <code>TypeVariable</code> of <code>OutputT</code>.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>java.lang.Object[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#mergeAccumulators-java.lang.Iterable-org.apache.beam.sdk.transforms.CombineWithContext.Context-">mergeAccumulators</a></span>(java.lang.Iterable&lt;java.lang.Object[]&gt;&nbsp;accumulators,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.Context.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.Context</a>&nbsp;c)</code>
<div class="block">Returns an accumulator representing the accumulation of all the input values accumulated in
the merging accumulators.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a>&nbsp;builder)</code>
<div class="block">Register display data for the given transform or component.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>&lt;InputT,OutputT&gt;<br><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">CombineFns.ComposedCombineFnWithContext</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#with-org.apache.beam.sdk.transforms.SimpleFunction-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.transforms.CombineFnBase.GlobalCombineFn-org.apache.beam.sdk.values.TupleTag-">with</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/SimpleFunction.html" title="class in org.apache.beam.sdk.transforms">SimpleFunction</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>,InputT&gt;&nbsp;extractInputFn,
<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;InputT&gt;&nbsp;combineInputCoder,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;InputT,?,OutputT&gt;&nbsp;globalCombineFn,
<a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a>&lt;OutputT&gt;&nbsp;outputTag)</code>
<div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineFns.ComposedCombineFnWithContext</code></a> with an additional <a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms"><code>CombineFnBase.GlobalCombineFn</code></a>.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>&lt;InputT,OutputT&gt;<br><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">CombineFns.ComposedCombineFnWithContext</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html#with-org.apache.beam.sdk.transforms.SimpleFunction-org.apache.beam.sdk.transforms.CombineFnBase.GlobalCombineFn-org.apache.beam.sdk.values.TupleTag-">with</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/SimpleFunction.html" title="class in org.apache.beam.sdk.transforms">SimpleFunction</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>,InputT&gt;&nbsp;extractInputFn,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;InputT,?,OutputT&gt;&nbsp;globalCombineFn,
<a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a>&lt;OutputT&gt;&nbsp;outputTag)</code>
<div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineFns.ComposedCombineFnWithContext</code></a> with an additional <a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms"><code>CombineFnBase.GlobalCombineFn</code></a>.</div>
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<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html#apply-java.lang.Iterable-org.apache.beam.sdk.transforms.CombineWithContext.Context-">apply</a>, <a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html#defaultValue--">defaultValue</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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<h4>with</h4>
<pre>public&nbsp;&lt;InputT,OutputT&gt;&nbsp;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">CombineFns.ComposedCombineFnWithContext</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>&gt;&nbsp;with(<a href="../../../../../org/apache/beam/sdk/transforms/SimpleFunction.html" title="class in org.apache.beam.sdk.transforms">SimpleFunction</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>,InputT&gt;&nbsp;extractInputFn,
<a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;InputT,?,OutputT&gt;&nbsp;globalCombineFn,
<a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a>&lt;OutputT&gt;&nbsp;outputTag)</pre>
<div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineFns.ComposedCombineFnWithContext</code></a> with an additional <a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms"><code>CombineFnBase.GlobalCombineFn</code></a>.</div>
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<a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a>&lt;OutputT&gt;&nbsp;outputTag)</pre>
<div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms"><code>CombineFns.ComposedCombineFnWithContext</code></a> with an additional <a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms"><code>CombineFnBase.GlobalCombineFn</code></a>.</div>
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<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html#createAccumulator-org.apache.beam.sdk.transforms.CombineWithContext.Context-">CombineWithContext.CombineFnWithContext</a></code></span></div>
<div class="block">Returns a new, mutable accumulator value, representing the accumulation of zero input values.
<p>It is equivalent to <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#createAccumulator--"><code>Combine.CombineFn.createAccumulator()</code></a>, but it has additional access to
<code>CombineWithContext.Context</code>.</div>
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<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html#addInput-AccumT-InputT-org.apache.beam.sdk.transforms.CombineWithContext.Context-">CombineWithContext.CombineFnWithContext</a></code></span></div>
<div class="block">Adds the given input value to the given accumulator, returning the new accumulator value.
<p>It is equivalent to <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#addInput-AccumT-InputT-"><code>Combine.CombineFn.addInput(AccumT, InputT)</code></a>, but it has additional access to <code>CombineWithContext.Context</code>.</div>
<dl>
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<dd><code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html#addInput-AccumT-InputT-org.apache.beam.sdk.transforms.CombineWithContext.Context-">addInput</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.CombineFnWithContext</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>,java.lang.Object[],<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms">CombineFns.CoCombineResult</a>&gt;</code></dd>
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<div class="block">Returns an accumulator representing the accumulation of all the input values accumulated in
the merging accumulators.
<p>It is equivalent to <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#mergeAccumulators-java.lang.Iterable-"><code>Combine.CombineFn.mergeAccumulators(java.lang.Iterable&lt;AccumT&gt;)</code></a>, but it has additional access to
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<div class="block">Returns the output value that is the result of combining all the input values represented by
the given accumulator.
<p>It is equivalent to <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#extractOutput-AccumT-"><code>Combine.CombineFn.extractOutput(AccumT)</code></a>, but it has additional access to
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<div class="block">Returns an accumulator that represents the same logical value as the input accumulator, but
may have a more compact representation.
<p>It is equivalent to <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#compact-AccumT-"><code>Combine.CombineFn.compact(AccumT)</code></a>, but it has additional access to <code>CombineWithContext.Context</code>.</div>
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<dd><code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html#compact-AccumT-org.apache.beam.sdk.transforms.CombineWithContext.Context-">compact</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineWithContext.CombineFnWithContext.html" title="class in org.apache.beam.sdk.transforms">CombineWithContext.CombineFnWithContext</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>,java.lang.Object[],<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.CoCombineResult.html" title="class in org.apache.beam.sdk.transforms">CombineFns.CoCombineResult</a>&gt;</code></dd>
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<pre>public&nbsp;<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;java.lang.Object[]&gt;&nbsp;getAccumulatorCoder(<a href="../../../../../org/apache/beam/sdk/coders/CoderRegistry.html" title="class in org.apache.beam.sdk.coders">CoderRegistry</a>&nbsp;registry,
<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;<a href="../../../../../org/apache/beam/sdk/transforms/CombineFns.ComposedCombineFnWithContext.html" title="type parameter in CombineFns.ComposedCombineFnWithContext">DataT</a>&gt;&nbsp;dataCoder)
throws <a href="../../../../../org/apache/beam/sdk/coders/CannotProvideCoderException.html" title="class in org.apache.beam.sdk.coders">CannotProvideCoderException</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html#getAccumulatorCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">CombineFnBase.GlobalCombineFn</a></code></span></div>
<div class="block">Returns the <code>Coder</code> to use for accumulator <code>AccumT</code> values, or null if it is not
able to be inferred.
<p>By default, uses the knowledge of the <code>Coder</code> being used for <code>InputT</code> values
and the enclosing <code>Pipeline</code>'s <code>CoderRegistry</code> to try to infer the Coder for
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<p>This is the Coder used to send data through a communication-intensive shuffle step, so a
compact and efficient representation may have significant performance benefits.</div>
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<dd><code><a href="../../../../../org/apache/beam/sdk/coders/CannotProvideCoderException.html" title="class in org.apache.beam.sdk.coders">CannotProvideCoderException</a></code></dd>
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<div class="block">Register display data for the given transform or component.
<p><code>populateDisplayData(DisplayData.Builder)</code> is invoked by Pipeline runners to collect
display data via <a href="../../../../../org/apache/beam/sdk/transforms/display/DisplayData.html#from-org.apache.beam.sdk.transforms.display.HasDisplayData-"><code>DisplayData.from(HasDisplayData)</code></a>. Implementations may call <code>super.populateDisplayData(builder)</code> in order to register display data in the current namespace,
but should otherwise use <code>subcomponent.populateDisplayData(builder)</code> to use the namespace
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>builder</code> - The builder to populate with display data.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
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<a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;InputT&gt;&nbsp;inputCoder)
throws <a href="../../../../../org/apache/beam/sdk/coders/CannotProvideCoderException.html" title="class in org.apache.beam.sdk.coders">CannotProvideCoderException</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html#getDefaultOutputCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">CombineFnBase.GlobalCombineFn</a></code></span></div>
<div class="block">Returns the <code>Coder</code> to use by default for output <code>OutputT</code> values, or null if it
is not able to be inferred.
<p>By default, uses the knowledge of the <code>Coder</code> being used for input <code>InputT</code>
values and the enclosing <code>Pipeline</code>'s <code>CoderRegistry</code> to try to infer the Coder
for <code>OutputT</code> values.</div>
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<dd><code><a href="../../../../../org/apache/beam/sdk/coders/CannotProvideCoderException.html" title="class in org.apache.beam.sdk.coders">CannotProvideCoderException</a></code></dd>
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<div class="block">Returns the error message for not supported default values in Combine.globally().</div>
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