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<div class="subTitle">org.apache.beam.runners.spark.structuredstreaming.translation</div>
<h2 title="Class PipelineTranslator" class="title">Class PipelineTranslator</h2>
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<li>java.lang.Object</li>
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<li><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">org.apache.beam.sdk.Pipeline.PipelineVisitor.Defaults</a></li>
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<li>org.apache.beam.runners.spark.structuredstreaming.translation.PipelineTranslator</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html" title="interface in org.apache.beam.sdk">Pipeline.PipelineVisitor</a></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/batch/PipelineTranslatorBatch.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation.batch">PipelineTranslatorBatch</a>, <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/streaming/PipelineTranslatorStreaming.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation.streaming">PipelineTranslatorStreaming</a></dd>
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<pre>public abstract class <span class="typeNameLabel">PipelineTranslator</span>
extends <a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">Pipeline.PipelineVisitor.Defaults</a></pre>
<div class="block"><code>Pipeline.PipelineVisitor</code> that translates the Beam operators to their Spark counterparts.
It also does the pipeline preparation: mode detection, transforms replacement, classpath
preparation. If we have a streaming job, it is instantiated as a <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/streaming/PipelineTranslatorStreaming.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation.streaming"><code>PipelineTranslatorStreaming</code></a>. If we have a batch job, it is instantiated as a <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/batch/PipelineTranslatorBatch.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation.batch"><code>PipelineTranslatorBatch</code></a>.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.beam.sdk.<a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html" title="interface in org.apache.beam.sdk">Pipeline.PipelineVisitor</a></h3>
<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.CompositeBehavior.html" title="enum in org.apache.beam.sdk">Pipeline.PipelineVisitor.CompositeBehavior</a>, <a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">Pipeline.PipelineVisitor.Defaults</a></code></li>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>protected <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/AbstractTranslationContext.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation">AbstractTranslationContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#translationContext">translationContext</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#PipelineTranslator--">PipelineTranslator</a></span>()</code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#detectTranslationMode-org.apache.beam.sdk.Pipeline-org.apache.beam.sdk.options.StreamingOptions-">detectTranslationMode</a></span>(<a href="../../../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a>&nbsp;pipeline,
<a href="../../../../../../../org/apache/beam/sdk/options/StreamingOptions.html" title="interface in org.apache.beam.sdk.options">StreamingOptions</a>&nbsp;options)</code>
<div class="block">Visit the pipeline to determine the translation mode (batch/streaming) and update options
accordingly.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.CompositeBehavior.html" title="enum in org.apache.beam.sdk">Pipeline.PipelineVisitor.CompositeBehavior</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#enterCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">enterCompositeTransform</a></span>(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</code>
<div class="block">Called for each composite transform after all topological predecessors have been visited but
before any of its component transforms.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected abstract <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/TransformTranslator.html" title="interface in org.apache.beam.runners.spark.structuredstreaming.translation">TransformTranslator</a>&lt;?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#getTransformTranslator-org.apache.beam.sdk.runners.TransformHierarchy.Node-">getTransformTranslator</a></span>(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</code>
<div class="block">Get a <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/TransformTranslator.html" title="interface in org.apache.beam.runners.spark.structuredstreaming.translation"><code>TransformTranslator</code></a> for the given <code>TransformHierarchy.Node</code>.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/AbstractTranslationContext.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation">AbstractTranslationContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#getTranslationContext--">getTranslationContext</a></span>()</code>&nbsp;</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#leaveCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">leaveCompositeTransform</a></span>(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</code>
<div class="block">Called for each composite transform after all of its component transforms and their outputs
have been visited.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#replaceTransforms-org.apache.beam.sdk.Pipeline-org.apache.beam.sdk.options.StreamingOptions-">replaceTransforms</a></span>(<a href="../../../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a>&nbsp;pipeline,
<a href="../../../../../../../org/apache/beam/sdk/options/StreamingOptions.html" title="interface in org.apache.beam.sdk.options">StreamingOptions</a>&nbsp;options)</code>&nbsp;</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/runners/spark/structuredstreaming/translation/PipelineTranslator.html#translate-org.apache.beam.sdk.Pipeline-">translate</a></span>(<a href="../../../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a>&nbsp;pipeline)</code>
<div class="block">Translates the pipeline by passing this class as a visitor.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/PipelineTranslator.html#visitPrimitiveTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">visitPrimitiveTransform</a></span>(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</code>
<div class="block">Called for each primitive transform after all of its topological predecessors and inputs have
been visited.</div>
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<h3>Methods inherited from class&nbsp;org.apache.beam.sdk.<a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">Pipeline.PipelineVisitor.Defaults</a></h3>
<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#enterPipeline-org.apache.beam.sdk.Pipeline-">enterPipeline</a>, <a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#getPipeline--">getPipeline</a>, <a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#leavePipeline-org.apache.beam.sdk.Pipeline-">leavePipeline</a>, <a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#visitValue-org.apache.beam.sdk.values.PValue-org.apache.beam.sdk.runners.TransformHierarchy.Node-">visitValue</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>translationContext</h4>
<pre>protected&nbsp;<a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/AbstractTranslationContext.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation">AbstractTranslationContext</a> translationContext</pre>
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<h4>PipelineTranslator</h4>
<pre>public&nbsp;PipelineTranslator()</pre>
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<h4>replaceTransforms</h4>
<pre>public static&nbsp;void&nbsp;replaceTransforms(<a href="../../../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a>&nbsp;pipeline,
<a href="../../../../../../../org/apache/beam/sdk/options/StreamingOptions.html" title="interface in org.apache.beam.sdk.options">StreamingOptions</a>&nbsp;options)</pre>
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<h4>detectTranslationMode</h4>
<pre>public static&nbsp;void&nbsp;detectTranslationMode(<a href="../../../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a>&nbsp;pipeline,
<a href="../../../../../../../org/apache/beam/sdk/options/StreamingOptions.html" title="interface in org.apache.beam.sdk.options">StreamingOptions</a>&nbsp;options)</pre>
<div class="block">Visit the pipeline to determine the translation mode (batch/streaming) and update options
accordingly.</div>
</li>
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<a name="getTransformTranslator-org.apache.beam.sdk.runners.TransformHierarchy.Node-">
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<h4>getTransformTranslator</h4>
<pre>protected abstract&nbsp;<a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/TransformTranslator.html" title="interface in org.apache.beam.runners.spark.structuredstreaming.translation">TransformTranslator</a>&lt;?&gt;&nbsp;getTransformTranslator(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</pre>
<div class="block">Get a <a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/TransformTranslator.html" title="interface in org.apache.beam.runners.spark.structuredstreaming.translation"><code>TransformTranslator</code></a> for the given <code>TransformHierarchy.Node</code>.</div>
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<h4>translate</h4>
<pre>public&nbsp;void&nbsp;translate(<a href="../../../../../../../org/apache/beam/sdk/Pipeline.html" title="class in org.apache.beam.sdk">Pipeline</a>&nbsp;pipeline)</pre>
<div class="block">Translates the pipeline by passing this class as a visitor.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pipeline</code> - The pipeline to be translated</dd>
</dl>
</li>
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<a name="enterCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">
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<h4>enterCompositeTransform</h4>
<pre>public&nbsp;<a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.CompositeBehavior.html" title="enum in org.apache.beam.sdk">Pipeline.PipelineVisitor.CompositeBehavior</a>&nbsp;enterCompositeTransform(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html#enterCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">Pipeline.PipelineVisitor</a></code></span></div>
<div class="block">Called for each composite transform after all topological predecessors have been visited but
before any of its component transforms.
<p>The return value controls whether or not child transforms are visited.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html#enterCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">enterCompositeTransform</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html" title="interface in org.apache.beam.sdk">Pipeline.PipelineVisitor</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#enterCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">enterCompositeTransform</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">Pipeline.PipelineVisitor.Defaults</a></code></dd>
</dl>
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<h4>leaveCompositeTransform</h4>
<pre>public&nbsp;void&nbsp;leaveCompositeTransform(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html#leaveCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">Pipeline.PipelineVisitor</a></code></span></div>
<div class="block">Called for each composite transform after all of its component transforms and their outputs
have been visited.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html#leaveCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">leaveCompositeTransform</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html" title="interface in org.apache.beam.sdk">Pipeline.PipelineVisitor</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#leaveCompositeTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">leaveCompositeTransform</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">Pipeline.PipelineVisitor.Defaults</a></code></dd>
</dl>
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<h4>visitPrimitiveTransform</h4>
<pre>public&nbsp;void&nbsp;visitPrimitiveTransform(org.apache.beam.sdk.runners.TransformHierarchy.Node&nbsp;node)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html#visitPrimitiveTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">Pipeline.PipelineVisitor</a></code></span></div>
<div class="block">Called for each primitive transform after all of its topological predecessors and inputs have
been visited.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html#visitPrimitiveTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">visitPrimitiveTransform</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.html" title="interface in org.apache.beam.sdk">Pipeline.PipelineVisitor</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html#visitPrimitiveTransform-org.apache.beam.sdk.runners.TransformHierarchy.Node-">visitPrimitiveTransform</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/beam/sdk/Pipeline.PipelineVisitor.Defaults.html" title="class in org.apache.beam.sdk">Pipeline.PipelineVisitor.Defaults</a></code></dd>
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<h4>getTranslationContext</h4>
<pre>public&nbsp;<a href="../../../../../../../org/apache/beam/runners/spark/structuredstreaming/translation/AbstractTranslationContext.html" title="class in org.apache.beam.runners.spark.structuredstreaming.translation">AbstractTranslationContext</a>&nbsp;getTranslationContext()</pre>
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