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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.heron.streamlet.impl.streamlets</a></div>
<h2 title="Class JoinStreamlet" class="title">Class JoinStreamlet&lt;K,&#8203;R,&#8203;S,&#8203;T&gt;</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li><a href="../StreamletBaseImpl.html" title="class in org.apache.heron.streamlet.impl">org.apache.heron.streamlet.impl.StreamletBaseImpl</a>&lt;R&gt;</li>
<li>
<ul class="inheritance">
<li><a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">org.apache.heron.streamlet.impl.StreamletImpl</a>&lt;<a href="../../KeyValue.html" title="class in org.apache.heron.streamlet">KeyValue</a>&lt;<a href="../../KeyedWindow.html" title="class in org.apache.heron.streamlet">KeyedWindow</a>&lt;K&gt;,&#8203;T&gt;&gt;</li>
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<li>org.apache.heron.streamlet.impl.streamlets.JoinStreamlet&lt;K,&#8203;R,&#8203;S,&#8203;T&gt;</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../../Streamlet.html" title="interface in org.apache.heron.streamlet">Streamlet</a>&lt;<a href="../../KeyValue.html" title="class in org.apache.heron.streamlet">KeyValue</a>&lt;<a href="../../KeyedWindow.html" title="class in org.apache.heron.streamlet">KeyedWindow</a>&lt;K&gt;,&#8203;T&gt;&gt;</code>, <code><a href="../../StreamletBase.html" title="interface in org.apache.heron.streamlet">StreamletBase</a>&lt;<a href="../../KeyValue.html" title="class in org.apache.heron.streamlet">KeyValue</a>&lt;<a href="../../KeyedWindow.html" title="class in org.apache.heron.streamlet">KeyedWindow</a>&lt;K&gt;,&#8203;T&gt;&gt;</code></dd>
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<pre>public final class <span class="typeNameLabel">JoinStreamlet&lt;K,&#8203;R,&#8203;S,&#8203;T&gt;</span>
extends <a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletImpl</a>&lt;<a href="../../KeyValue.html" title="class in org.apache.heron.streamlet">KeyValue</a>&lt;<a href="../../KeyedWindow.html" title="class in org.apache.heron.streamlet">KeyedWindow</a>&lt;K&gt;,&#8203;T&gt;&gt;</pre>
<div class="block">JoinStreamlet represents a KVStreamlet that is the result of joining two KVStreamlets left
and right using a WindowConfig. For all left and right tuples in the window whose keys
match, the user supplied joinFunction is applied on the values to get the resulting value.
JoinStreamlet's elements are of KeyValue type where the key is KeyWindowInfo&lt;K&gt; type
and the value is of type VR.</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.heron.streamlet.impl.<a href="../StreamletBaseImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletBaseImpl</a></h3>
<code><a href="../StreamletBaseImpl.StreamletNamePrefix.html" title="enum in org.apache.heron.streamlet.impl">StreamletBaseImpl.StreamletNamePrefix</a></code></li>
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<code><a href="../StreamletBaseImpl.html#name">name</a>, <a href="../StreamletBaseImpl.html#nPartitions">nPartitions</a></code></li>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>static &lt;A,&#8203;B,&#8203;C,&#8203;D&gt;<br><a href="JoinStreamlet.html" title="class in org.apache.heron.streamlet.impl.streamlets">JoinStreamlet</a>&lt;A,&#8203;B,&#8203;C,&#8203;D&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createJoinStreamlet(org.apache.heron.streamlet.impl.StreamletImpl,org.apache.heron.streamlet.impl.StreamletImpl,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig,org.apache.heron.streamlet.JoinType,org.apache.heron.streamlet.SerializableBiFunction)">createJoinStreamlet</a></span>&#8203;(<a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletImpl</a>&lt;B&gt;&nbsp;left,
<a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletImpl</a>&lt;C&gt;&nbsp;right,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;B,&#8203;A&gt;&nbsp;leftKeyExtractor,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;C,&#8203;A&gt;&nbsp;rightKeyExtractor,
<a href="../../WindowConfig.html" title="interface in org.apache.heron.streamlet">WindowConfig</a>&nbsp;windowCfg,
<a href="../../JoinType.html" title="enum in org.apache.heron.streamlet">JoinType</a>&nbsp;joinType,
<a href="../../SerializableBiFunction.html" title="interface in org.apache.heron.streamlet">SerializableBiFunction</a>&lt;B,&#8203;C,&#8203;? extends D&gt;&nbsp;joinFn)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#doBuild(org.apache.heron.api.topology.TopologyBuilder,java.util.Set)">doBuild</a></span>&#8203;(<a href="../../../api/topology/TopologyBuilder.html" title="class in org.apache.heron.api.topology">TopologyBuilder</a>&nbsp;bldr,
java.util.Set&lt;java.lang.String&gt;&nbsp;stageNames)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../JoinType.html" title="enum in org.apache.heron.streamlet">JoinType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJoinType()">getJoinType</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.heron.streamlet.impl.<a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletImpl</a></h3>
<code><a href="../StreamletImpl.html#applyOperator(org.apache.heron.streamlet.IStreamletOperator)">applyOperator</a>, <a href="../StreamletImpl.html#applyOperator(org.apache.heron.streamlet.IStreamletOperator,org.apache.heron.api.grouping.StreamGrouping)">applyOperator</a>, <a href="../StreamletImpl.html#clone(int)">clone</a>, <a href="../StreamletImpl.html#consume(org.apache.heron.streamlet.SerializableConsumer)">consume</a>, <a href="../StreamletImpl.html#countByKey(org.apache.heron.streamlet.SerializableFunction)">countByKey</a>, <a href="../StreamletImpl.html#countByKeyAndWindow(org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig)">countByKeyAndWindow</a>, <a href="../StreamletImpl.html#filter(org.apache.heron.streamlet.SerializablePredicate)">filter</a>, <a href="../StreamletImpl.html#flatMap(org.apache.heron.streamlet.SerializableFunction)">flatMap</a>, <a href="../StreamletImpl.html#getAvailableStreamIds()">getAvailableStreamIds</a>, <a href="../StreamletImpl.html#getStreamId()">getStreamId</a>, <a href="../StreamletImpl.html#join(org.apache.heron.streamlet.Streamlet,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig,org.apache.heron.streamlet.JoinType,org.apache.heron.streamlet.SerializableBiFunction)">join</a>, <a href="../StreamletImpl.html#join(org.apache.heron.streamlet.Streamlet,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig,org.apache.heron.streamlet.SerializableBiFunction)">join</a>, <a href="../StreamletImpl.html#keyBy(org.apache.heron.streamlet.SerializableFunction)">keyBy</a>, <a href="../StreamletImpl.html#keyBy(org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction)">keyBy</a>, <a href="../StreamletImpl.html#log()">log</a>, <a href="../StreamletImpl.html#map(org.apache.heron.streamlet.SerializableFunction)">map</a>, <a href="../StreamletImpl.html#reduceByKey(org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableBinaryOperator)">reduceByKey</a>, <a href="../StreamletImpl.html#reduceByKey(org.apache.heron.streamlet.SerializableFunction,T,org.apache.heron.streamlet.SerializableBiFunction)">reduceByKey</a>, <a href="../StreamletImpl.html#reduceByKeyAndWindow(org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig,org.apache.heron.streamlet.SerializableBinaryOperator)">reduceByKeyAndWindow</a>, <a href="../StreamletImpl.html#reduceByKeyAndWindow(org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig,T,org.apache.heron.streamlet.SerializableBiFunction)">reduceByKeyAndWindow</a>, <a href="../StreamletImpl.html#repartition(int)">repartition</a>, <a href="../StreamletImpl.html#repartition(int,org.apache.heron.streamlet.SerializableBiFunction)">repartition</a>, <a href="../StreamletImpl.html#setName(java.lang.String)">setName</a>, <a href="../StreamletImpl.html#setNumPartitions(int)">setNumPartitions</a>, <a href="../StreamletImpl.html#split(java.util.Map)">split</a>, <a href="../StreamletImpl.html#toSink(org.apache.heron.streamlet.Sink)">toSink</a>, <a href="../StreamletImpl.html#transform(org.apache.heron.streamlet.SerializableTransformer)">transform</a>, <a href="../StreamletImpl.html#union(org.apache.heron.streamlet.Streamlet)">union</a>, <a href="../StreamletImpl.html#withStream(java.lang.String)">withStream</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.heron.streamlet.impl.<a href="../StreamletBaseImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletBaseImpl</a></h3>
<code><a href="../StreamletBaseImpl.html#addChild(org.apache.heron.streamlet.impl.StreamletBaseImpl)">addChild</a>, <a href="../StreamletBaseImpl.html#build(org.apache.heron.api.topology.TopologyBuilder,java.util.Set)">build</a>, <a href="../StreamletBaseImpl.html#getChildren()">getChildren</a>, <a href="../StreamletBaseImpl.html#getName()">getName</a>, <a href="../StreamletBaseImpl.html#getNumPartitions()">getNumPartitions</a>, <a href="../StreamletBaseImpl.html#isBuilt()">isBuilt</a>, <a href="../StreamletBaseImpl.html#isFullyBuilt()">isFullyBuilt</a>, <a href="../StreamletBaseImpl.html#setDefaultNameIfNone(org.apache.heron.streamlet.impl.StreamletBaseImpl.StreamletNamePrefix,java.util.Set)">setDefaultNameIfNone</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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<h3>Methods inherited from interface&nbsp;org.apache.heron.streamlet.<a href="../../Streamlet.html" title="interface in org.apache.heron.streamlet">Streamlet</a></h3>
<code><a href="../../Streamlet.html#getName()">getName</a>, <a href="../../Streamlet.html#getNumPartitions()">getNumPartitions</a></code></li>
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<h3>Method Detail</h3>
<a id="createJoinStreamlet(org.apache.heron.streamlet.impl.StreamletImpl,org.apache.heron.streamlet.impl.StreamletImpl,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.SerializableFunction,org.apache.heron.streamlet.WindowConfig,org.apache.heron.streamlet.JoinType,org.apache.heron.streamlet.SerializableBiFunction)">
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<h4>createJoinStreamlet</h4>
<pre class="methodSignature">public static&nbsp;&lt;A,&#8203;B,&#8203;C,&#8203;D&gt;&nbsp;<a href="JoinStreamlet.html" title="class in org.apache.heron.streamlet.impl.streamlets">JoinStreamlet</a>&lt;A,&#8203;B,&#8203;C,&#8203;D&gt;&nbsp;createJoinStreamlet&#8203;(<a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletImpl</a>&lt;B&gt;&nbsp;left,
<a href="../StreamletImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletImpl</a>&lt;C&gt;&nbsp;right,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;B,&#8203;A&gt;&nbsp;leftKeyExtractor,
<a href="../../SerializableFunction.html" title="interface in org.apache.heron.streamlet">SerializableFunction</a>&lt;C,&#8203;A&gt;&nbsp;rightKeyExtractor,
<a href="../../WindowConfig.html" title="interface in org.apache.heron.streamlet">WindowConfig</a>&nbsp;windowCfg,
<a href="../../JoinType.html" title="enum in org.apache.heron.streamlet">JoinType</a>&nbsp;joinType,
<a href="../../SerializableBiFunction.html" title="interface in org.apache.heron.streamlet">SerializableBiFunction</a>&lt;B,&#8203;C,&#8203;? extends D&gt;&nbsp;joinFn)</pre>
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<h4>getJoinType</h4>
<pre class="methodSignature">public&nbsp;<a href="../../JoinType.html" title="enum in org.apache.heron.streamlet">JoinType</a>&nbsp;getJoinType()</pre>
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<h4>doBuild</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;doBuild&#8203;(<a href="../../../api/topology/TopologyBuilder.html" title="class in org.apache.heron.api.topology">TopologyBuilder</a>&nbsp;bldr,
java.util.Set&lt;java.lang.String&gt;&nbsp;stageNames)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../StreamletBaseImpl.html#doBuild(org.apache.heron.api.topology.TopologyBuilder,java.util.Set)">doBuild</a></code>&nbsp;in class&nbsp;<code><a href="../StreamletBaseImpl.html" title="class in org.apache.heron.streamlet.impl">StreamletBaseImpl</a>&lt;<a href="../../KeyValue.html" title="class in org.apache.heron.streamlet">KeyValue</a>&lt;<a href="../../KeyedWindow.html" title="class in org.apache.heron.streamlet">KeyedWindow</a>&lt;<a href="JoinStreamlet.html" title="type parameter in JoinStreamlet">K</a>&gt;,&#8203;<a href="JoinStreamlet.html" title="type parameter in JoinStreamlet">T</a>&gt;&gt;</code></dd>
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