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<div class="subTitle">org.apache.beam.sdk.extensions.sql.impl.udaf</div>
<h2 title="Class StringAgg.StringAggString" class="title">Class StringAgg.StringAggString</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/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">org.apache.beam.sdk.transforms.Combine.CombineFn</a>&lt;java.lang.String,java.lang.String,java.lang.String&gt;</li>
<li>
<ul class="inheritance">
<li>org.apache.beam.sdk.extensions.sql.impl.udaf.StringAgg.StringAggString</li>
</ul>
</li>
</ul>
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<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;java.lang.String,java.lang.String,java.lang.String&gt;, <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/extensions/sql/impl/udaf/StringAgg.html" title="class in org.apache.beam.sdk.extensions.sql.impl.udaf">StringAgg</a></dd>
</dl>
<hr>
<br>
<pre>public static class <span class="typeNameLabel">StringAgg.StringAggString</span>
extends <a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a>&lt;java.lang.String,java.lang.String,java.lang.String&gt;</pre>
<div class="block">A <a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms"><code>Combine.CombineFn</code></a> that aggregates strings with a string as delimiter.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../../../serialized-form.html#org.apache.beam.sdk.extensions.sql.impl.udaf.StringAgg.StringAggString">Serialized Form</a></dd>
</dl>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</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/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.html#StringAggString-java.lang.String-">StringAggString</a></span>(java.lang.String&nbsp;delimiter)</code>&nbsp;</td>
</tr>
</table>
</li>
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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.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.html#addInput-java.lang.String-java.lang.String-">addInput</a></span>(java.lang.String&nbsp;curString,
java.lang.String&nbsp;nextString)</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.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.html#createAccumulator--">createAccumulator</a></span>()</code>
<div class="block">Returns a new, mutable accumulator value, representing the accumulation of zero input values.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.html#extractOutput-java.lang.String-">extractOutput</a></span>(java.lang.String&nbsp;output)</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="i3" 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/extensions/sql/impl/udaf/StringAgg.StringAggString.html#getAccumTVariable--">getAccumTVariable</a></span>()</code>
<div class="block">Returns the <code>TypeVariable</code> of <code>AccumT</code>.</div>
</td>
</tr>
<tr id="i4" 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;AccumT&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.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;InputT&gt;&nbsp;inputCoder)</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="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;OutputT&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.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="i6" class="altColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.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="i7" 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/extensions/sql/impl/udaf/StringAgg.StringAggString.html#getInputTVariable--">getInputTVariable</a></span>()</code>
<div class="block">Returns the <code>TypeVariable</code> of <code>InputT</code>.</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/extensions/sql/impl/udaf/StringAgg.StringAggString.html#getOutputTVariable--">getOutputTVariable</a></span>()</code>
<div class="block">Returns the <code>TypeVariable</code> of <code>OutputT</code>.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.html#mergeAccumulators-java.lang.Iterable-">mergeAccumulators</a></span>(java.lang.Iterable&lt;java.lang.String&gt;&nbsp;accumList)</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="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/udaf/StringAgg.StringAggString.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>
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<h3>Methods inherited from class&nbsp;org.apache.beam.sdk.transforms.<a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a></h3>
<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#apply-java.lang.Iterable-">apply</a>, <a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#compact-AccumT-">compact</a>, <a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#defaultValue--">defaultValue</a>, <a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#getInputType--">getInputType</a>, <a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#getOutputType--">getOutputType</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
</ul>
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<h4>StringAggString</h4>
<pre>public&nbsp;StringAggString(java.lang.String&nbsp;delimiter)</pre>
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<a name="createAccumulator--">
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<h4>createAccumulator</h4>
<pre>public&nbsp;java.lang.String&nbsp;createAccumulator()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#createAccumulator--">Combine.CombineFn</a></code></span></div>
<div class="block">Returns a new, mutable accumulator value, representing the accumulation of zero input values.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#createAccumulator--">createAccumulator</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a>&lt;java.lang.String,java.lang.String,java.lang.String&gt;</code></dd>
</dl>
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<a name="addInput-java.lang.String-java.lang.String-">
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<h4>addInput</h4>
<pre>public&nbsp;java.lang.String&nbsp;addInput(java.lang.String&nbsp;curString,
java.lang.String&nbsp;nextString)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#addInput-AccumT-InputT-">Combine.CombineFn</a></code></span></div>
<div class="block">Adds the given input value to the given accumulator, returning the new accumulator value.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#addInput-AccumT-InputT-">addInput</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a>&lt;java.lang.String,java.lang.String,java.lang.String&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>curString</code> - may be modified and returned for efficiency</dd>
<dd><code>nextString</code> - should not be mutated</dd>
</dl>
</li>
</ul>
<a name="mergeAccumulators-java.lang.Iterable-">
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<h4>mergeAccumulators</h4>
<pre>public&nbsp;java.lang.String&nbsp;mergeAccumulators(java.lang.Iterable&lt;java.lang.String&gt;&nbsp;accumList)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#mergeAccumulators-java.lang.Iterable-">Combine.CombineFn</a></code></span></div>
<div class="block">Returns an accumulator representing the accumulation of all the input values accumulated in
the merging accumulators.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#mergeAccumulators-java.lang.Iterable-">mergeAccumulators</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a>&lt;java.lang.String,java.lang.String,java.lang.String&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>accumList</code> - only the first accumulator may be modified and returned for efficiency;
the other accumulators should not be mutated, because they may be shared with other code
and mutating them could lead to incorrect results or data corruption.</dd>
</dl>
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<a name="extractOutput-java.lang.String-">
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<h4>extractOutput</h4>
<pre>public&nbsp;java.lang.String&nbsp;extractOutput(java.lang.String&nbsp;output)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#extractOutput-AccumT-">Combine.CombineFn</a></code></span></div>
<div class="block">Returns the output value that is the result of combining all the input values represented by
the given accumulator.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html#extractOutput-AccumT-">extractOutput</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a>&lt;java.lang.String,java.lang.String,java.lang.String&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>output</code> - can be modified for efficiency</dd>
</dl>
</li>
</ul>
<a name="getAccumulatorCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">
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<h4>getAccumulatorCoder</h4>
<pre>public&nbsp;<a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;AccumT&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;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#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
<code>AccumT</code> values.
<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>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html#getAccumulatorCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">getAccumulatorCoder</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;InputT,AccumT,OutputT&gt;</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/coders/CannotProvideCoderException.html" title="class in org.apache.beam.sdk.coders">CannotProvideCoderException</a></code></dd>
</dl>
</li>
</ul>
<a name="getDefaultOutputCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">
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<h4>getDefaultOutputCoder</h4>
<pre>public&nbsp;<a href="../../../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a>&lt;OutputT&gt;&nbsp;getDefaultOutputCoder(<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)
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>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html#getDefaultOutputCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-">getDefaultOutputCoder</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;InputT,AccumT,OutputT&gt;</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/coders/CannotProvideCoderException.html" title="class in org.apache.beam.sdk.coders">CannotProvideCoderException</a></code></dd>
</dl>
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<h4>getIncompatibleGlobalWindowErrorMessage</h4>
<pre>public&nbsp;java.lang.String&nbsp;getIncompatibleGlobalWindowErrorMessage()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html#getIncompatibleGlobalWindowErrorMessage--">CombineFnBase.GlobalCombineFn</a></code></span></div>
<div class="block">Returns the error message for not supported default values in Combine.globally().</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html#getIncompatibleGlobalWindowErrorMessage--">getIncompatibleGlobalWindowErrorMessage</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a>&lt;InputT,AccumT,OutputT&gt;</code></dd>
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<h4>getInputTVariable</h4>
<pre>public&nbsp;java.lang.reflect.TypeVariable&lt;?&gt;&nbsp;getInputTVariable()</pre>
<div class="block">Returns the <code>TypeVariable</code> of <code>InputT</code>.</div>
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<h4>getAccumTVariable</h4>
<pre>public&nbsp;java.lang.reflect.TypeVariable&lt;?&gt;&nbsp;getAccumTVariable()</pre>
<div class="block">Returns the <code>TypeVariable</code> of <code>AccumT</code>.</div>
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<a name="getOutputTVariable--">
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<h4>getOutputTVariable</h4>
<pre>public&nbsp;java.lang.reflect.TypeVariable&lt;?&gt;&nbsp;getOutputTVariable()</pre>
<div class="block">Returns the <code>TypeVariable</code> of <code>OutputT</code>.</div>
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<a name="populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">
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<h4>populateDisplayData</h4>
<pre>public&nbsp;void&nbsp;populateDisplayData(<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)</pre>
<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
of the subcomponent.
<p>By default, does not register any display data. Implementors may override this method to
provide their own display data.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></code></dd>
<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>
<dd><a href="../../../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display"><code>HasDisplayData</code></a></dd>
</dl>
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