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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.heron.streamlet.impl.operators</a></div>
<h2 title="Class JoinOperator" class="title">Class JoinOperator&lt;K,&#8203;V1,&#8203;V2,&#8203;VR&gt;</h2>
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<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
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<li>
<ul class="inheritance">
<li><a href="StreamletWindowOperator.html" title="class in org.apache.heron.streamlet.impl.operators">org.apache.heron.streamlet.impl.operators.StreamletWindowOperator</a>&lt;V1,&#8203;VR&gt;</li>
<li>
<ul class="inheritance">
<li>org.apache.heron.streamlet.impl.operators.JoinOperator&lt;K,&#8203;V1,&#8203;V2,&#8203;VR&gt;</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code>java.io.Serializable</code>, <code><a href="../../../api/bolt/IWindowedBolt.html" title="interface in org.apache.heron.api.bolt">IWindowedBolt</a></code>, <code><a href="../../../api/topology/IComponent.html" title="interface in org.apache.heron.api.topology">IComponent</a></code>, <code><a href="../../IStreamletOperator.html" title="interface in org.apache.heron.streamlet">IStreamletOperator</a>&lt;V1,&#8203;VR&gt;</code>, <code><a href="../../IStreamletWindowOperator.html" title="interface in org.apache.heron.streamlet">IStreamletWindowOperator</a>&lt;V1,&#8203;VR&gt;</code></dd>
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<pre>public class <span class="typeNameLabel">JoinOperator&lt;K,&#8203;V1,&#8203;V2,&#8203;VR&gt;</span>
extends <a href="StreamletWindowOperator.html" title="class in org.apache.heron.streamlet.impl.operators">StreamletWindowOperator</a>&lt;V1,&#8203;VR&gt;</pre>
<div class="block">JoinOperator is the bolt that implements the join/leftJoin/innerJoin functionality.
It embeds the logic of the type of join(outer, left, inner) which it takes in as
a config parameter. Also taken as parameters are which source is left and right.
This is needed for the semantics of outer/left/inner joins.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../serialized-form.html#org.apache.heron.streamlet.impl.operators.JoinOperator">Serialized Form</a></dd>
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<code><a href="../../../api/bolt/BaseWindowedBolt.Count.html" title="class in org.apache.heron.api.bolt">BaseWindowedBolt.Count</a></code></li>
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<code><a href="StreamletWindowOperator.html#collector">collector</a></code></li>
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<code><a href="../../../api/bolt/BaseWindowedBolt.html#timestampExtractor">timestampExtractor</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#windowConfiguration">windowConfiguration</a></code></li>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.heron.streamlet.JoinType,java.lang.String,java.lang.String,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableBiFunction)">JoinOperator</a></span>&#8203;(<a href="../../JoinType.html" title="enum in org.apache.heron.streamlet">JoinType</a>&nbsp;joinType,
java.lang.String&nbsp;leftComponent,
java.lang.String&nbsp;rightComponent,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;<a href="JoinOperator.html" title="type parameter in JoinOperator">V1</a>,&#8203;<a href="JoinOperator.html" title="type parameter in JoinOperator">K</a>&gt;&nbsp;leftKeyExtractor,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;<a href="JoinOperator.html" title="type parameter in JoinOperator">V2</a>,&#8203;<a href="JoinOperator.html" title="type parameter in JoinOperator">K</a>&gt;&nbsp;rightKeyExtractor,
<a href="../../SerializableBiFunction.html" title="interface in org.apache.heron.streamlet">SerializableBiFunction</a>&lt;<a href="JoinOperator.html" title="type parameter in JoinOperator">V1</a>,&#8203;<a href="JoinOperator.html" title="type parameter in JoinOperator">V2</a>,&#8203;? extends <a href="JoinOperator.html" title="type parameter in JoinOperator">VR</a>&gt;&nbsp;joinFn)</code></th>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#execute(org.apache.heron.api.windowing.TupleWindow)">execute</a></span>&#8203;(<a href="../../../api/windowing/TupleWindow.html" title="interface in org.apache.heron.api.windowing">TupleWindow</a>&nbsp;inputWindow)</code></th>
<td class="colLast">
<div class="block">Process the tuple window and optionally emit new tuples based on the tuples in the input
window.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.util.Map&lt;java.lang.String,&#8203;java.lang.Object&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getComponentConfiguration()">getComponentConfiguration</a></span>()</code></th>
<td class="colLast">
<div class="block">Declare configuration specific to this component.</div>
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<code><a href="StreamletWindowOperator.html#declareOutputFields(org.apache.heron.api.topology.OutputFieldsDeclarer)">declareOutputFields</a>, <a href="StreamletWindowOperator.html#prepare(java.util.Map,org.apache.heron.api.topology.TopologyContext,org.apache.heron.api.bolt.OutputCollector)">prepare</a></code></li>
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<code><a href="../../../api/bolt/BaseWindowedBolt.html#cleanup()">cleanup</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#getTimestampExtractor()">getTimestampExtractor</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withCustomEvictor(org.apache.heron.api.windowing.EvictionPolicy)">withCustomEvictor</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withCustomTrigger(org.apache.heron.api.windowing.TriggerPolicy)">withCustomTrigger</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withLag(java.time.Duration)">withLag</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withLateTupleStream(java.lang.String)">withLateTupleStream</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withTimestampExtractor(org.apache.heron.api.windowing.TimestampExtractor)">withTimestampExtractor</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withTimestampField(java.lang.String)">withTimestampField</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withTumblingWindow(java.time.Duration)">withTumblingWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withTumblingWindow(org.apache.heron.api.bolt.BaseWindowedBolt.Count)">withTumblingWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWatermarkInterval(java.time.Duration)">withWatermarkInterval</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWindow(java.time.Duration)">withWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWindow(java.time.Duration,java.time.Duration)">withWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWindow(java.time.Duration,org.apache.heron.api.bolt.BaseWindowedBolt.Count)">withWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWindow(org.apache.heron.api.bolt.BaseWindowedBolt.Count)">withWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWindow(org.apache.heron.api.bolt.BaseWindowedBolt.Count,java.time.Duration)">withWindow</a>, <a href="../../../api/bolt/BaseWindowedBolt.html#withWindow(org.apache.heron.api.bolt.BaseWindowedBolt.Count,org.apache.heron.api.bolt.BaseWindowedBolt.Count)">withWindow</a></code></li>
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<code><a href="../../../api/bolt/IWindowedBolt.html#cleanup()">cleanup</a>, <a href="../../../api/bolt/IWindowedBolt.html#getTimestampExtractor()">getTimestampExtractor</a></code></li>
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<a id="&lt;init&gt;(org.apache.heron.streamlet.JoinType,java.lang.String,java.lang.String,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableBiFunction)">
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<h4>JoinOperator</h4>
<pre>public&nbsp;JoinOperator&#8203;(<a href="../../JoinType.html" title="enum in org.apache.heron.streamlet">JoinType</a>&nbsp;joinType,
java.lang.String&nbsp;leftComponent,
java.lang.String&nbsp;rightComponent,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;<a href="JoinOperator.html" title="type parameter in JoinOperator">V1</a>,&#8203;<a href="JoinOperator.html" title="type parameter in JoinOperator">K</a>&gt;&nbsp;leftKeyExtractor,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;<a href="JoinOperator.html" title="type parameter in JoinOperator">V2</a>,&#8203;<a href="JoinOperator.html" title="type parameter in JoinOperator">K</a>&gt;&nbsp;rightKeyExtractor,
<a href="../../SerializableBiFunction.html" title="interface in org.apache.heron.streamlet">SerializableBiFunction</a>&lt;<a href="JoinOperator.html" title="type parameter in JoinOperator">V1</a>,&#8203;<a href="JoinOperator.html" title="type parameter in JoinOperator">V2</a>,&#8203;? extends <a href="JoinOperator.html" title="type parameter in JoinOperator">VR</a>&gt;&nbsp;joinFn)</pre>
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<h4>getComponentConfiguration</h4>
<pre class="methodSignature">public&nbsp;java.util.Map&lt;java.lang.String,&#8203;java.lang.Object&gt;&nbsp;getComponentConfiguration()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../api/topology/IComponent.html#getComponentConfiguration()">IComponent</a></code></span></div>
<div class="block">Declare configuration specific to this component. Only a subset of the "topology.*" configs can
be overridden. The component configuration can be further overridden when constructing the
topology using <a href="../../../api/topology/TopologyBuilder.html" title="class in org.apache.heron.api.topology"><code>TopologyBuilder</code></a></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../api/topology/IComponent.html#getComponentConfiguration()">getComponentConfiguration</a></code>&nbsp;in interface&nbsp;<code><a href="../../../api/topology/IComponent.html" title="interface in org.apache.heron.api.topology">IComponent</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../api/bolt/BaseWindowedBolt.html#getComponentConfiguration()">getComponentConfiguration</a></code>&nbsp;in class&nbsp;<code><a href="../../../api/bolt/BaseWindowedBolt.html" title="class in org.apache.heron.api.bolt">BaseWindowedBolt</a></code></dd>
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<h4>execute</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;execute&#8203;(<a href="../../../api/windowing/TupleWindow.html" title="interface in org.apache.heron.api.windowing">TupleWindow</a>&nbsp;inputWindow)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../api/bolt/IWindowedBolt.html#execute(org.apache.heron.api.windowing.TupleWindow)">IWindowedBolt</a></code></span></div>
<div class="block">Process the tuple window and optionally emit new tuples based on the tuples in the input
window.</div>
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