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| <h2 title="Class PCollection" class="title">Class PCollection<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/values/PValueBase.html" title="class in org.apache.beam.sdk.values">org.apache.beam.sdk.values.PValueBase</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.values.PCollection<T></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
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| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - the type of the elements of this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a></dd> |
| </dl> |
| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../org/apache/beam/sdk/values/PInput.html" title="interface in org.apache.beam.sdk.values">PInput</a>, <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a>, <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values">PValue</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">PCollection<T></span> |
| extends <a href="../../../../../org/apache/beam/sdk/values/PValueBase.html" title="class in org.apache.beam.sdk.values">PValueBase</a> |
| implements <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values">PValue</a></pre> |
| <div class="block">A <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection<T></code></a> is an immutable collection of values of type <code>T</code>. A <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> can contain either a bounded or unbounded number of elements. Bounded |
| and unbounded <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a> are produced as the output of <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransforms</code></a> (including root PTransforms like <a href="../../../../../org/apache/beam/sdk/io/Read.html" title="class in org.apache.beam.sdk.io"><code>Read</code></a> and <a href="../../../../../org/apache/beam/sdk/transforms/Create.html" title="class in org.apache.beam.sdk.transforms"><code>Create</code></a>), and can be passed |
| as the inputs of other PTransforms. |
| |
| <p>Some root transforms produce bounded <code>PCollections</code> and others produce unbounded ones. |
| For example, <a href="../../../../../org/apache/beam/sdk/io/GenerateSequence.html#from-long-"><code>GenerateSequence.from(long)</code></a> with <a href="../../../../../org/apache/beam/sdk/io/GenerateSequence.html#to-long-"><code>GenerateSequence.to(long)</code></a> produces a fixed set |
| of integers, so it produces a bounded <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>. <a href="../../../../../org/apache/beam/sdk/io/GenerateSequence.html#from-long-"><code>GenerateSequence.from(long)</code></a> without |
| a <a href="../../../../../org/apache/beam/sdk/io/GenerateSequence.html#to-long-"><code>GenerateSequence.to(long)</code></a> produces all integers as an infinite stream, so it produces an |
| unbounded <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>. |
| |
| <p>Each element in a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> has an associated timestamp. Readers assign timestamps |
| to elements when they create <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a>, and other <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransforms</code></a> propagate these timestamps from their input to their output. See the documentation |
| on <a href="../../../../../org/apache/beam/sdk/io/BoundedSource.BoundedReader.html" title="class in org.apache.beam.sdk.io"><code>BoundedSource.BoundedReader</code></a> and <a href="../../../../../org/apache/beam/sdk/io/UnboundedSource.UnboundedReader.html" title="class in org.apache.beam.sdk.io"><code>UnboundedSource.UnboundedReader</code></a> for more information on how these readers |
| produce timestamps and watermarks. |
| |
| <p>Additionally, a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> has an associated <a href="../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> and each element is |
| assigned to a set of windows. By default, the windowing function is <a href="../../../../../org/apache/beam/sdk/transforms/windowing/GlobalWindows.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>GlobalWindows</code></a> and all |
| elements are assigned into a single default window. This default can be overridden with the |
| <a href="../../../../../org/apache/beam/sdk/transforms/windowing/Window.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>Window</code></a> <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>. |
| |
| <p>See the individual <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> subclasses for specific information on how they |
| propagate timestamps and windowing.</div> |
| </li> |
| </ul> |
| </div> |
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| <!-- ======== NESTED CLASS SUMMARY ======== --> |
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| <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>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a></span></code> |
| <div class="block">The enumeration of cases for whether a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> is bounded.</div> |
| </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="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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="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><OutputT extends <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a>><br>OutputT</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#apply-org.apache.beam.sdk.transforms.PTransform-">apply</a></span>(<a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><? super <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>>,OutputT> t)</code> |
| <div class="block">of the <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><OutputT extends <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a>><br>OutputT</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#apply-java.lang.String-org.apache.beam.sdk.transforms.PTransform-">apply</a></span>(java.lang.String name, |
| <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><? super <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>>,OutputT> t)</code> |
| <div class="block">Applies the given <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> to this input <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>, using <code>name</code> to |
| identify this specific application of the transform.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#createPrimitiveOutputInternal-org.apache.beam.sdk.Pipeline-org.apache.beam.sdk.values.WindowingStrategy-org.apache.beam.sdk.values.PCollection.IsBounded-org.apache.beam.sdk.coders.Coder-">createPrimitiveOutputInternal</a></span>(<a href="../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a> pipeline, |
| <a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,?> windowingStrategy, |
| <a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a> isBounded, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><T> coder)</code> |
| <div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <T> <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#createPrimitiveOutputInternal-org.apache.beam.sdk.Pipeline-org.apache.beam.sdk.values.WindowingStrategy-org.apache.beam.sdk.values.PCollection.IsBounded-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.values.TupleTag-">createPrimitiveOutputInternal</a></span>(<a href="../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a> pipeline, |
| <a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,?> windowingStrategy, |
| <a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a> isBounded, |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><T> coder, |
| <a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a><?> tag)</code> |
| <div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>java.util.Map<<a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a><?>,<a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values">PValue</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#expand--">expand</a></span>()</code> |
| <div class="block">Expands this <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values"><code>POutput</code></a> into a list of its component output <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values"><code>PValues</code></a>.</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/sdk/values/PCollection.html#finishSpecifying-org.apache.beam.sdk.values.PInput-org.apache.beam.sdk.transforms.PTransform-">finishSpecifying</a></span>(<a href="../../../../../org/apache/beam/sdk/values/PInput.html" title="interface in org.apache.beam.sdk.values">PInput</a> input, |
| <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><?,?> transform)</code> |
| <div class="block">After building, finalizes this <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values"><code>PValue</code></a> to make it ready for running.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#finishSpecifyingOutput-java.lang.String-org.apache.beam.sdk.values.PInput-org.apache.beam.sdk.transforms.PTransform-">finishSpecifyingOutput</a></span>(java.lang.String transformName, |
| <a href="../../../../../org/apache/beam/sdk/values/PInput.html" title="interface in org.apache.beam.sdk.values">PInput</a> input, |
| <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><?,?> transform)</code> |
| <div class="block">As part of applying the producing <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>, finalizes this output to make it ready |
| for being used as an input and for running.</div> |
| </td> |
| </tr> |
| <tr id="i7" 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><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#getCoder--">getCoder</a></span>()</code> |
| <div class="block">Returns the <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> used by this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> to encode and decode the values |
| stored in it.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>,<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#getFromRowFunction--">getFromRowFunction</a></span>()</code> |
| <div class="block">Returns the attached schema's fromRowFunction.</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/values/PCollection.html#getName--">getName</a></span>()</code> |
| <div class="block">Returns the name of this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas">Schema</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#getSchema--">getSchema</a></span>()</code> |
| <div class="block">Returns the attached schema.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>,<a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#getToRowFunction--">getToRowFunction</a></span>()</code> |
| <div class="block">Returns the attached schema's toRowFunction.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values">TypeDescriptor</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html#getTypeDescriptor--">getTypeDescriptor</a></span>()</code> |
| <div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values"><code>TypeDescriptor<T></code></a> with some reflective information about |
| <code>T</code>, if possible.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>></code></td> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>></code></td> |
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| <p>Automatically invoked whenever this <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values"><code>POutput</code></a> is output, after <a href="../../../../../org/apache/beam/sdk/values/POutput.html#finishSpecifyingOutput-java.lang.String-org.apache.beam.sdk.values.PInput-org.apache.beam.sdk.transforms.PTransform-"><code>POutput.finishSpecifyingOutput(String, PInput, PTransform)</code></a> has been called on each component |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
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| <dd><code><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html#finishSpecifyingOutput-java.lang.String-org.apache.beam.sdk.values.PInput-org.apache.beam.sdk.transforms.PTransform-">finishSpecifyingOutput</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html" title="class in org.apache.beam.sdk.values">PValueBase</a></code></dd> |
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| <div class="block">After building, finalizes this <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values"><code>PValue</code></a> to make it ready for running. Automatically |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
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| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html#finishSpecifying-org.apache.beam.sdk.values.PInput-org.apache.beam.sdk.transforms.PTransform-">finishSpecifying</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html" title="class in org.apache.beam.sdk.values">PValueBase</a></code></dd> |
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| <dd><code>transform</code> - the <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that produced this <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values"><code>PValue</code></a></dd> |
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| <div class="block">Returns a <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values"><code>TypeDescriptor<T></code></a> with some reflective information about |
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| <p>By default, the name of a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> is based on the name of the <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> |
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| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/beam/sdk/values/PValue.html#expand--">PValue</a></code></span></div> |
| <div class="block">Expands this <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values"><code>POutput</code></a> into a list of its component output <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values"><code>PValues</code></a>. |
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| <ul> |
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| <li>A tuple or list of <a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values"><code>PValues</code></a> (such as <a href="../../../../../org/apache/beam/sdk/values/PCollectionTuple.html" title="class in org.apache.beam.sdk.values"><code>PCollectionTuple</code></a> or <a href="../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values"><code>PCollectionList</code></a>) expands to its component <code>PValue PValues</code>. |
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| <p>Not intended to be invoked directly by user code..</div> |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
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| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/beam/sdk/values/POutput.html#expand--">expand</a></code> in interface <code><a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/beam/sdk/values/PValue.html#expand--">expand</a></code> in interface <code><a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values">PValue</a></code></dd> |
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| <pre>public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setName(java.lang.String name)</pre> |
| <div class="block">Sets the name of this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>. Returns <code>this</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html#setName-java.lang.String-">setName</a></code> in class <code><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html" title="class in org.apache.beam.sdk.values">PValueBase</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalStateException</code> - if this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> has already been finalized and may no |
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| <h4>getCoder</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/values/PCollection.html" title="type parameter in PCollection">T</a>> getCoder()</pre> |
| <div class="block">Returns the <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> used by this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> to encode and decode the values |
| stored in it.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalStateException</code> - if the <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> hasn't been set, and couldn't be inferred.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setCoder-org.apache.beam.sdk.coders.Coder-"> |
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| <h4>setCoder</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setCoder(<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/values/PCollection.html" title="type parameter in PCollection">T</a>> coder)</pre> |
| <div class="block">Sets the <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> used by this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> to encode and decode the values stored |
| in it. Returns <code>this</code>.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalStateException</code> - if this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> has already been finalized and may no |
| longer be set. Once <a href="../../../../../org/apache/beam/sdk/values/PCollection.html#apply-org.apache.beam.sdk.transforms.PTransform-"><code>apply(org.apache.beam.sdk.transforms.PTransform<? super org.apache.beam.sdk.values.PCollection<T>, OutputT>)</code></a> has been called, this will be the case.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="setRowSchema-org.apache.beam.sdk.schemas.Schema-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setRowSchema</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setRowSchema(<a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas">Schema</a> schema)</pre> |
| <div class="block">Sets a schema on this PCollection. |
| |
| <p>Can only be called on a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>.</div> |
| </li> |
| </ul> |
| <a name="setSchema-org.apache.beam.sdk.schemas.Schema-org.apache.beam.sdk.transforms.SerializableFunction-org.apache.beam.sdk.transforms.SerializableFunction-"> |
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| <h4>setSchema</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setSchema(<a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas">Schema</a> schema, |
| <a href="../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>,<a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>> toRowFunction, |
| <a href="../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>,<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> fromRowFunction)</pre> |
| <div class="block">Sets a <a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas"><code>Schema</code></a> on this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>.</div> |
| </li> |
| </ul> |
| <a name="hasSchema--"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hasSchema</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public boolean hasSchema()</pre> |
| <div class="block">Returns whether this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> has an attached schema.</div> |
| </li> |
| </ul> |
| <a name="getSchema--"> |
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| <h4>getSchema</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public <a href="../../../../../org/apache/beam/sdk/schemas/Schema.html" title="class in org.apache.beam.sdk.schemas">Schema</a> getSchema()</pre> |
| <div class="block">Returns the attached schema.</div> |
| </li> |
| </ul> |
| <a name="getToRowFunction--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getToRowFunction</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public <a href="../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>,<a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>> getToRowFunction()</pre> |
| <div class="block">Returns the attached schema's toRowFunction.</div> |
| </li> |
| </ul> |
| <a name="getFromRowFunction--"> |
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| <li class="blockList"> |
| <h4>getFromRowFunction</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SCHEMAS">SCHEMAS</a>) |
| public <a href="../../../../../org/apache/beam/sdk/transforms/SerializableFunction.html" title="interface in org.apache.beam.sdk.transforms">SerializableFunction</a><<a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>,<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> getFromRowFunction()</pre> |
| <div class="block">Returns the attached schema's fromRowFunction.</div> |
| </li> |
| </ul> |
| <a name="apply-org.apache.beam.sdk.transforms.PTransform-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>apply</h4> |
| <pre>public <OutputT extends <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a>> OutputT apply(<a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><? super <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>>,OutputT> t)</pre> |
| <div class="block">of the <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the output of the applied <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="apply-java.lang.String-org.apache.beam.sdk.transforms.PTransform-"> |
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| <h4>apply</h4> |
| <pre>public <OutputT extends <a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a>> OutputT apply(java.lang.String name, |
| <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a><? super <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>>,OutputT> t)</pre> |
| <div class="block">Applies the given <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> to this input <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>, using <code>name</code> to |
| identify this specific application of the transform. This name is used in various places, |
| including the monitoring UI, logging, and to stably identify this application node in the job |
| graph.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the output of the applied <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getWindowingStrategy--"> |
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| <ul class="blockList"> |
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| <h4>getWindowingStrategy</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,?> getWindowingStrategy()</pre> |
| <div class="block">Returns the <a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values"><code>WindowingStrategy</code></a> of this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>.</div> |
| </li> |
| </ul> |
| <a name="isBounded--"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>isBounded</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a> isBounded()</pre> |
| </li> |
| </ul> |
| <a name="setTypeDescriptor-org.apache.beam.sdk.values.TypeDescriptor-"> |
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| <ul class="blockList"> |
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| <h4>setTypeDescriptor</h4> |
| <pre>public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setTypeDescriptor(<a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values">TypeDescriptor</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> typeDescriptor)</pre> |
| <div class="block">Sets the <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values"><code>TypeDescriptor<T></code></a> for this <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection<T></code></a>. This may allow the enclosing <a href="../../../../../org/apache/beam/sdk/values/PCollectionTuple.html" title="class in org.apache.beam.sdk.values"><code>PCollectionTuple</code></a>, <a href="../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values"><code>PCollectionList</code></a>, or <code>PTransform<?, PCollection<T>></code>, etc., to provide more detailed |
| reflective information.</div> |
| </li> |
| </ul> |
| <a name="setWindowingStrategyInternal-org.apache.beam.sdk.values.WindowingStrategy-"> |
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| <h4>setWindowingStrategyInternal</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Internal.html" title="annotation in org.apache.beam.sdk.annotations">@Internal</a> |
| public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setWindowingStrategyInternal(<a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,?> windowingStrategy)</pre> |
| <div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div> |
| </li> |
| </ul> |
| <a name="setIsBoundedInternal-org.apache.beam.sdk.values.PCollection.IsBounded-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>setIsBoundedInternal</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Internal.html" title="annotation in org.apache.beam.sdk.annotations">@Internal</a> |
| public <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="type parameter in PCollection">T</a>> setIsBoundedInternal(<a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a> isBounded)</pre> |
| <div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div> |
| </li> |
| </ul> |
| <a name="createPrimitiveOutputInternal-org.apache.beam.sdk.Pipeline-org.apache.beam.sdk.values.WindowingStrategy-org.apache.beam.sdk.values.PCollection.IsBounded-org.apache.beam.sdk.coders.Coder-"> |
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| <h4>createPrimitiveOutputInternal</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Internal.html" title="annotation in org.apache.beam.sdk.annotations">@Internal</a> |
| public static <T> <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><T> createPrimitiveOutputInternal(<a href="../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a> pipeline, |
| <a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,?> windowingStrategy, |
| <a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a> isBounded, |
| @Nullable |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><T> coder)</pre> |
| <div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div> |
| </li> |
| </ul> |
| <a name="createPrimitiveOutputInternal-org.apache.beam.sdk.Pipeline-org.apache.beam.sdk.values.WindowingStrategy-org.apache.beam.sdk.values.PCollection.IsBounded-org.apache.beam.sdk.coders.Coder-org.apache.beam.sdk.values.TupleTag-"> |
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| <h4>createPrimitiveOutputInternal</h4> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Internal.html" title="annotation in org.apache.beam.sdk.annotations">@Internal</a> |
| public static <T> <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a><T> createPrimitiveOutputInternal(<a href="../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a> pipeline, |
| <a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a><?,?> windowingStrategy, |
| <a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a> isBounded, |
| @Nullable |
| <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><T> coder, |
| <a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a><?> tag)</pre> |
| <div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div> |
| </li> |
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| </li> |
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| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
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| <div class="subNav"> |
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