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| <h2 title="Class ApproximateUnique.ApproximateUniqueCombineFn" class="title">Class ApproximateUnique.ApproximateUniqueCombineFn<T></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><T,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.transforms.ApproximateUnique.ApproximateUniqueCombineFn<T></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - the type of the values being combined</dd> |
| </dl> |
| <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><T,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long>, <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/ApproximateUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public static class <span class="typeNameLabel">ApproximateUnique.ApproximateUniqueCombineFn<T></span> |
| extends <a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a><T,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></pre> |
| <div class="block"><code>CombineFn</code> that computes an estimate of the number of distinct values that were |
| combined. |
| |
| <p>Hashes input elements, computes the top <code>sampleSize</code> hash values, and uses those to |
| extrapolate the size of the entire set of hash values by assuming the rest of the hash values |
| are as densely distributed as the top <code>sampleSize</code>. |
| |
| <p>Used to implement <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.html#globally-int-"><code>ApproximatUnique.globally(...)</code></a> and <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.html#perKey-int-"><code>ApproximatUnique.perKey(...)</code></a>.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../serialized-form.html#org.apache.beam.sdk.transforms.ApproximateUnique.ApproximateUniqueCombineFn">Serialized Form</a></dd> |
| </dl> |
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| <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>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a></span></code> |
| <div class="block">A heap utility class to efficiently track the largest added elements.</div> |
| </td> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html#ApproximateUniqueCombineFn-long-org.apache.beam.sdk.coders.Coder-">ApproximateUniqueCombineFn</a></span>(long sampleSize, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>> coder)</code> </td> |
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| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html#addInput-org.apache.beam.sdk.transforms.ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique-T-">addInput</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> heap, |
| <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a> input)</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><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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.Long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html#extractOutput-org.apache.beam.sdk.transforms.ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique-">extractOutput</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> heap)</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<?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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> registry, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>> 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><OutputT></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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> registry, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><InputT> 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/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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<?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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<?></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html#mergeAccumulators-java.lang.Iterable-">mergeAccumulators</a></span>(java.lang.Iterable<<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>> heaps)</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/transforms/ApproximateUnique.ApproximateUniqueCombineFn.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> builder)</code> |
| <div class="block">Register display data for the given transform or component.</div> |
| </td> |
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| <h3>Methods inherited from class 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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| <pre>public ApproximateUniqueCombineFn(long sampleSize, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>> coder)</pre> |
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| <pre>public <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> createAccumulator()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <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> in class <code><a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></code></dd> |
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| <h4>addInput</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> addInput(<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> heap, |
| <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a> input)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <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> in class <code><a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>heap</code> - may be modified and returned for efficiency</dd> |
| <dd><code>input</code> - should not be mutated</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="mergeAccumulators-java.lang.Iterable-"> |
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| <h4>mergeAccumulators</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> mergeAccumulators(java.lang.Iterable<<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>> heaps)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <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> in class <code><a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>heaps</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> |
| </li> |
| </ul> |
| <a name="extractOutput-org.apache.beam.sdk.transforms.ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique-"> |
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| </a> |
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| <h4>extractOutput</h4> |
| <pre>public java.lang.Long extractOutput(<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a> heap)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <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> in class <code><a href="../../../../../org/apache/beam/sdk/transforms/Combine.CombineFn.html" title="class in org.apache.beam.sdk.transforms">Combine.CombineFn</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>heap</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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| </a> |
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| <h4>getAccumulatorCoder</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>> getAccumulatorCoder(<a href="../../../../../org/apache/beam/sdk/coders/CoderRegistry.html" title="class in org.apache.beam.sdk.coders">CoderRegistry</a> registry, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>> inputCoder)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <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> in interface <code><a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a><<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.html" title="type parameter in ApproximateUnique.ApproximateUniqueCombineFn">T</a>,<a href="../../../../../org/apache/beam/sdk/transforms/ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique.html" title="class in org.apache.beam.sdk.transforms">ApproximateUnique.ApproximateUniqueCombineFn.LargestUnique</a>,java.lang.Long></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getDefaultOutputCoder-org.apache.beam.sdk.coders.CoderRegistry-org.apache.beam.sdk.coders.Coder-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getDefaultOutputCoder</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><OutputT> getDefaultOutputCoder(<a href="../../../../../org/apache/beam/sdk/coders/CoderRegistry.html" title="class in org.apache.beam.sdk.coders">CoderRegistry</a> registry, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><InputT> 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: <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> in interface <code><a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a><InputT,AccumT,OutputT></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="getIncompatibleGlobalWindowErrorMessage--"> |
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| <ul class="blockList"> |
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| <h4>getIncompatibleGlobalWindowErrorMessage</h4> |
| <pre>public java.lang.String getIncompatibleGlobalWindowErrorMessage()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <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> in interface <code><a href="../../../../../org/apache/beam/sdk/transforms/CombineFnBase.GlobalCombineFn.html" title="interface in org.apache.beam.sdk.transforms">CombineFnBase.GlobalCombineFn</a><InputT,AccumT,OutputT></code></dd> |
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| <a name="getInputTVariable--"> |
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| <h4>getInputTVariable</h4> |
| <pre>public java.lang.reflect.TypeVariable<?> getInputTVariable()</pre> |
| <div class="block">Returns the <code>TypeVariable</code> of <code>InputT</code>.</div> |
| </li> |
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| <a name="getAccumTVariable--"> |
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| <h4>getAccumTVariable</h4> |
| <pre>public java.lang.reflect.TypeVariable<?> getAccumTVariable()</pre> |
| <div class="block">Returns the <code>TypeVariable</code> of <code>AccumT</code>.</div> |
| </li> |
| </ul> |
| <a name="getOutputTVariable--"> |
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| <h4>getOutputTVariable</h4> |
| <pre>public java.lang.reflect.TypeVariable<?> getOutputTVariable()</pre> |
| <div class="block">Returns the <code>TypeVariable</code> of <code>OutputT</code>.</div> |
| </li> |
| </ul> |
| <a name="populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-"> |
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| <h4>populateDisplayData</h4> |
| <pre>public void populateDisplayData(<a href="../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a> 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> in interface <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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