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<h1 title="Package" class="title">Package&nbsp;org.apache.beam.sdk.values</h1>
<div class="docSummary">
<div class="block">Defines <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> and other classes for representing data in
a <a href="../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk"><code>Pipeline</code></a>.</div>
</div>
<p>See:&nbsp;<a href="#package.description">Description</a></p>
</div>
<div class="contentContainer">
<ul class="blockList">
<li class="blockList">
<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation">
<caption><span>Interface Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionView.html" title="interface in org.apache.beam.sdk.values">PCollectionView</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/values/PCollectionView.html" title="interface in org.apache.beam.sdk.values"><code>PCollectionView&lt;T&gt;</code></a> is an immutable view of a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>
as a value of type <code>T</code> that can be accessed as a side input to a <a href="../../../../../org/apache/beam/sdk/transforms/ParDo.html" title="class in org.apache.beam.sdk.transforms"><code>ParDo</code></a> transform.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.TypeDescriptorSupplier.html" title="interface in org.apache.beam.sdk.values">PCollectionViews.TypeDescriptorSupplier</a>&lt;T&gt;</td>
<td class="colLast">&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PInput.html" title="interface in org.apache.beam.sdk.values">PInput</a></td>
<td class="colLast">
<div class="block">The interface for things that might be input to a <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 class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/POutput.html" title="interface in org.apache.beam.sdk.values">POutput</a></td>
<td class="colLast">
<div class="block">The interface for things that might be output from a <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 class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PValue.html" title="interface in org.apache.beam.sdk.values">PValue</a></td>
<td class="colLast">
<div class="block"><b><i>For internal use.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TypeDescriptors.TypeVariableExtractor.html" title="interface in org.apache.beam.sdk.values">TypeDescriptors.TypeVariableExtractor</a>&lt;InputT,OutputT&gt;</td>
<td class="colLast">
<div class="block">A helper interface for use with <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptors.html#extractFromTypeParameters-T-java.lang.Class-org.apache.beam.sdk.values.TypeDescriptors.TypeVariableExtractor-"><code>TypeDescriptors.extractFromTypeParameters(Object, Class,
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<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation">
<caption><span>Class Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values">KV</a>&lt;K,V&gt;</td>
<td class="colLast">
<div class="block">An immutable key/value pair.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/KV.OrderByKey.html" title="class in org.apache.beam.sdk.values">KV.OrderByKey</a>&lt;K extends java.lang.Comparable&lt;? super K&gt;,V&gt;</td>
<td class="colLast">
<div class="block">A <code>Comparator</code> that orders <a href="../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values"><code>KVs</code></a> by the natural ordering of their keys.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/KV.OrderByValue.html" title="class in org.apache.beam.sdk.values">KV.OrderByValue</a>&lt;K,V extends java.lang.Comparable&lt;? super V&gt;&gt;</td>
<td class="colLast">
<div class="block">A <code>Comparator</code> that orders <a href="../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values"><code>KVs</code></a> by the natural ordering of their values.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values">PBegin</a></td>
<td class="colLast">
<div class="block"><a href="../../../../../org/apache/beam/sdk/values/PBegin.html" title="class in org.apache.beam.sdk.values"><code>PBegin</code></a> is the "input" to a root <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>, such as <a href="../../../../../org/apache/beam/sdk/io/TextIO.Read.html" title="class in org.apache.beam.sdk.io"><code>Read</code></a> or <a href="../../../../../org/apache/beam/sdk/transforms/Create.html" title="class in org.apache.beam.sdk.transforms"><code>Create</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection&lt;T&gt;</code></a> is an immutable collection of values of type <code>T</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values">PCollectionList</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values"><code>PCollectionList&lt;T&gt;</code></a> is an immutable list of homogeneously typed
<a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection&lt;T&gt;s</code></a>.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionTuple.html" title="class in org.apache.beam.sdk.values">PCollectionTuple</a></td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/values/PCollectionTuple.html" title="class in org.apache.beam.sdk.values"><code>PCollectionTuple</code></a> is an immutable tuple of heterogeneously-typed <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a>, "keyed" by <a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values"><code>TupleTags</code></a>.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.html" title="class in org.apache.beam.sdk.values">PCollectionViews</a></td>
<td class="colLast">
<div class="block"><b>For internal use only; no backwards compatibility guarantees.</b></div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.IterableViewFn.html" title="class in org.apache.beam.sdk.values">PCollectionViews.IterableViewFn</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Implementation which is able to adapt a multimap materialization to a <code>Iterable&lt;T&gt;</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.ListViewFn.html" title="class in org.apache.beam.sdk.values">PCollectionViews.ListViewFn</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Implementation which is able to adapt a multimap materialization to a <code>List&lt;T&gt;</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.MapViewFn.html" title="class in org.apache.beam.sdk.values">PCollectionViews.MapViewFn</a>&lt;K,V&gt;</td>
<td class="colLast">
<div class="block">Implementation which is able to adapt a multimap materialization to a <code>Map&lt;K, V&gt;</code>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.MultimapViewFn.html" title="class in org.apache.beam.sdk.values">PCollectionViews.MultimapViewFn</a>&lt;K,V&gt;</td>
<td class="colLast">
<div class="block">Implementation which is able to adapt a multimap materialization to a <code>Map&lt;K,
Iterable&lt;V&gt;&gt;</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.SimplePCollectionView.html" title="class in org.apache.beam.sdk.values">PCollectionViews.SimplePCollectionView</a>&lt;ElemT,PrimitiveViewT,ViewT,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>&gt;</td>
<td class="colLast">
<div class="block">A class for <a href="../../../../../org/apache/beam/sdk/values/PCollectionView.html" title="interface in org.apache.beam.sdk.values"><code>PCollectionView</code></a> implementations, with additional type parameters that are
not visible at pipeline assembly time when the view is used as a side input.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollectionViews.SingletonViewFn.html" title="class in org.apache.beam.sdk.values">PCollectionViews.SingletonViewFn</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Implementation which is able to adapt a multimap materialization to a <code>T</code>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PDone.html" title="class in org.apache.beam.sdk.values">PDone</a></td>
<td class="colLast">
<div class="block"><a href="../../../../../org/apache/beam/sdk/values/PDone.html" title="class in org.apache.beam.sdk.values"><code>PDone</code></a> is the output of a <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> that has a trivial result, such as a <a href="../../../../../org/apache/beam/sdk/io/WriteFiles.html" title="class in org.apache.beam.sdk.io"><code>WriteFiles</code></a>.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PValueBase.html" title="class in org.apache.beam.sdk.values">PValueBase</a></td>
<td class="colLast">
<div class="block"><b><i>For internal use.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a></td>
<td class="colLast">
<div class="block"><a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values"><code>Row</code></a> is an immutable tuple-like schema to represent one element in a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a>.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/Row.Builder.html" title="class in org.apache.beam.sdk.values">Row.Builder</a></td>
<td class="colLast">
<div class="block">Builder for <a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values"><code>Row</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/Row.Equals.html" title="class in org.apache.beam.sdk.values">Row.Equals</a></td>
<td class="colLast">&nbsp;</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/RowWithGetters.html" title="class in org.apache.beam.sdk.values">RowWithGetters</a></td>
<td class="colLast">
<div class="block">A Concrete subclass of <a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values"><code>Row</code></a> that delegates to a set of provided <a href="../../../../../org/apache/beam/sdk/schemas/FieldValueGetter.html" title="interface in org.apache.beam.sdk.schemas"><code>FieldValueGetter</code></a>s.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/RowWithStorage.html" title="class in org.apache.beam.sdk.values">RowWithStorage</a></td>
<td class="colLast">
<div class="block">Concrete subclass of <a href="../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values"><code>Row</code></a> that explicitly stores all fields of the row.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/ShardedKey.html" title="class in org.apache.beam.sdk.values">ShardedKey</a>&lt;K&gt;</td>
<td class="colLast">
<div class="block">A key and a shard number.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TaggedPValue.html" title="class in org.apache.beam.sdk.values">TaggedPValue</a></td>
<td class="colLast">
<div class="block"><b><i>For internal use only; no backwards-compatibility guarantees.</i></b></div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TimestampedValue.html" title="class in org.apache.beam.sdk.values">TimestampedValue</a>&lt;V&gt;</td>
<td class="colLast">
<div class="block">An immutable pair of a value and a timestamp.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TimestampedValue.TimestampedValueCoder.html" title="class in org.apache.beam.sdk.values">TimestampedValue.TimestampedValueCoder</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> for <a href="../../../../../org/apache/beam/sdk/values/TimestampedValue.html" title="class in org.apache.beam.sdk.values"><code>TimestampedValue</code></a>.</div>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values">TupleTag</a>&lt;V&gt;</td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values"><code>TupleTag</code></a> is a typed tag to use as the key of a heterogeneously typed tuple, like <a href="../../../../../org/apache/beam/sdk/values/PCollectionTuple.html" title="class in org.apache.beam.sdk.values"><code>PCollectionTuple</code></a>.</div>
</td>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TupleTagList.html" title="class in org.apache.beam.sdk.values">TupleTagList</a></td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/values/TupleTagList.html" title="class in org.apache.beam.sdk.values"><code>TupleTagList</code></a> is an immutable list of heterogeneously typed <a href="../../../../../org/apache/beam/sdk/values/TupleTag.html" title="class in org.apache.beam.sdk.values"><code>TupleTags</code></a>.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values">TypeDescriptor</a>&lt;T&gt;</td>
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<div class="block">A description of a Java type, including actual generic parameters where possible.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TypeDescriptors.html" title="class in org.apache.beam.sdk.values">TypeDescriptors</a></td>
<td class="colLast">
<div class="block">A utility class for creating <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values"><code>TypeDescriptor</code></a> objects for different types, such as Java
primitive types, containers and <a href="../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values"><code>KVs</code></a> of other <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html" title="class in org.apache.beam.sdk.values"><code>TypeDescriptor</code></a> objects, and
extracting type variables of parameterized types (e.g.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/TypeParameter.html" title="class in org.apache.beam.sdk.values">TypeParameter</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">Captures a free type variable that can be used in <a href="../../../../../org/apache/beam/sdk/values/TypeDescriptor.html#where-org.apache.beam.sdk.values.TypeParameter-org.apache.beam.sdk.values.TypeDescriptor-"><code>TypeDescriptor.where(org.apache.beam.sdk.values.TypeParameter&lt;X&gt;, org.apache.beam.sdk.values.TypeDescriptor&lt;X&gt;)</code></a>.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/ValueInSingleWindow.html" title="class in org.apache.beam.sdk.values">ValueInSingleWindow</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">An immutable tuple of value, timestamp, window, and pane.</div>
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<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/ValueInSingleWindow.Coder.html" title="class in org.apache.beam.sdk.values">ValueInSingleWindow.Coder</a>&lt;T&gt;</td>
<td class="colLast">
<div class="block">A coder for <a href="../../../../../org/apache/beam/sdk/values/ValueInSingleWindow.html" title="class in org.apache.beam.sdk.values"><code>ValueInSingleWindow</code></a>.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/ValueWithRecordId.html" title="class in org.apache.beam.sdk.values">ValueWithRecordId</a>&lt;ValueT&gt;</td>
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<div class="block"><b>For internal use only; no backwards compatibility guarantees.</b></div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/ValueWithRecordId.StripIdsDoFn.html" title="class in org.apache.beam.sdk.values">ValueWithRecordId.StripIdsDoFn</a>&lt;T&gt;</td>
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<div class="block"><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.html" title="class in org.apache.beam.sdk.transforms"><code>DoFn</code></a> to turn a <code>ValueWithRecordId&lt;T&gt;</code> back to the value <code>T</code>.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/ValueWithRecordId.ValueWithRecordIdCoder.html" title="class in org.apache.beam.sdk.values">ValueWithRecordId.ValueWithRecordIdCoder</a>&lt;ValueT&gt;</td>
<td class="colLast">
<div class="block">A <a href="../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> for <code>ValueWithRecordId</code>, using a wrapped value <code>Coder</code>.</div>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.html" title="class in org.apache.beam.sdk.values">WindowingStrategy</a>&lt;T,W extends <a href="../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>&gt;</td>
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<div class="block">A <code>WindowingStrategy</code> describes the windowing behavior for a specific collection of values.</div>
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<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Summary table, listing enums, and an explanation">
<caption><span>Enum Summary</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Enum</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/PCollection.IsBounded.html" title="enum in org.apache.beam.sdk.values">PCollection.IsBounded</a></td>
<td class="colLast">
<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>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../org/apache/beam/sdk/values/WindowingStrategy.AccumulationMode.html" title="enum in org.apache.beam.sdk.values">WindowingStrategy.AccumulationMode</a></td>
<td class="colLast">
<div class="block">The accumulation modes that can be used with windowing.</div>
</td>
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<h2 title="Package org.apache.beam.sdk.values Description">Package org.apache.beam.sdk.values Description</h2>
<div class="block">Defines <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> and other classes for representing data in
a <a href="../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk"><code>Pipeline</code></a>.
<p>In particular, see these collection abstractions:
<ul>
<li><a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> - an immutable collection of values of type
<code>T</code> and the main representation for data in Beam.
<li><a href="../../../../../org/apache/beam/sdk/values/PCollectionView.html" title="interface in org.apache.beam.sdk.values"><code>PCollectionView</code></a> - an immutable view of a <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollection</code></a> that can be accessed as a side input of a <a href="../../../../../org/apache/beam/sdk/transforms/ParDo.html" title="class in org.apache.beam.sdk.transforms"><code>ParDo</code></a> <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a>.
<li><a href="../../../../../org/apache/beam/sdk/values/PCollectionTuple.html" title="class in org.apache.beam.sdk.values"><code>PCollectionTuple</code></a> - a heterogeneous tuple of <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a> used in cases where a <a href="../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms"><code>PTransform</code></a> takes or returns multiple <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a>.
<li><a href="../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values"><code>PCollectionList</code></a> - a homogeneous list of <a href="../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values"><code>PCollections</code></a> used, for example, as input to <a href="../../../../../org/apache/beam/sdk/transforms/Flatten.html" title="class in org.apache.beam.sdk.transforms"><code>Flatten</code></a>.
</ul>
<p>And these classes for individual values play particular roles in Beam:
<ul>
<li><a href="../../../../../org/apache/beam/sdk/values/KV.html" title="class in org.apache.beam.sdk.values"><code>KV</code></a> - a key/value pair that is used by keyed transforms,
most notably <a href="../../../../../org/apache/beam/sdk/transforms/GroupByKey.html" title="class in org.apache.beam.sdk.transforms"><code>GroupByKey</code></a>.
<li><a href="../../../../../org/apache/beam/sdk/values/TimestampedValue.html" title="class in org.apache.beam.sdk.values"><code>TimestampedValue</code></a> - a timestamp/value pair that is used
for windowing and handling out-of-order data in streaming execution.
</ul>
<p>For further details, see the documentation for each class in this package.</div>
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