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<div class="subTitle">org.apache.edgent.oplet.plumbing</div>
<h2 title="Class Barrier" class="title">Class Barrier&lt;T&gt;</h2>
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<li><a href="../../../../../org/apache/edgent/oplet/core/AbstractOplet.html" title="class in org.apache.edgent.oplet.core">org.apache.edgent.oplet.core.AbstractOplet</a>&lt;T,U&gt;</li>
<li>
<ul class="inheritance">
<li><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html" title="class in org.apache.edgent.oplet.core">org.apache.edgent.oplet.core.FanIn</a>&lt;T,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;T&gt;&gt;</li>
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<li>org.apache.edgent.oplet.plumbing.Barrier&lt;T&gt;</li>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - Type of the tuple.</dd>
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<dd><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>, <a href="../../../../../org/apache/edgent/oplet/Oplet.html" title="interface in org.apache.edgent.oplet">Oplet</a>&lt;T,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;T&gt;&gt;</dd>
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<pre>public class <span class="typeNameLabel">Barrier&lt;T&gt;</span>
extends <a href="../../../../../org/apache/edgent/oplet/core/FanIn.html" title="class in org.apache.edgent.oplet.core">FanIn</a>&lt;T,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;T&gt;&gt;</pre>
<div class="block">A tuple synchronization barrier.
<P>
<code>Barrier</code> has n input ports with tuple type <code>T</code>
and one output port with tuple type <code>List&lt;T&gt;</code>.
Once the oplet receives one tuple on each of its input ports,
it generates an output tuple containing one tuple from each input port.
It then awaits receiving the next collection of tuples.
Input port 0's tuple is in list[0], port 1's tuple in list[1], and so on.
</P><P>
Each input port has an associated queue of size <code>queueCapacity</code>.
The input port's <code>Consumer&lt;T&gt;.accept()</code> will block if it's queue is full.
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html#Barrier-int-">Barrier</a></span>(int&nbsp;queueCapacity)</code>
<div class="block">Create a new instance.</div>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html#accept-T-int-">accept</a></span>(<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&nbsp;tuple,
int&nbsp;iportIndex)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html#close--">close</a></span>()</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html#initialize-org.apache.edgent.oplet.OpletContext-">initialize</a></span>(<a href="../../../../../org/apache/edgent/oplet/OpletContext.html" title="interface in org.apache.edgent.oplet">OpletContext</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;&nbsp;context)</code>
<div class="block">Initialize the oplet.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/edgent/function/BiFunction.html" title="interface in org.apache.edgent.function">BiFunction</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html#receiver--">receiver</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html#start--">start</a></span>()</code>
<div class="block">Start the oplet.</div>
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<h3>Methods inherited from class&nbsp;org.apache.edgent.oplet.core.<a href="../../../../../org/apache/edgent/oplet/core/FanIn.html" title="class in org.apache.edgent.oplet.core">FanIn</a></h3>
<code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#consumer-int-">consumer</a>, <a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#getDestination--">getDestination</a>, <a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#getInputs--">getInputs</a>, <a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#setReceiver-org.apache.edgent.function.BiFunction-">setReceiver</a>, <a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#submit-U-">submit</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.edgent.oplet.core.<a href="../../../../../org/apache/edgent/oplet/core/AbstractOplet.html" title="class in org.apache.edgent.oplet.core">AbstractOplet</a></h3>
<code><a href="../../../../../org/apache/edgent/oplet/core/AbstractOplet.html#getOpletContext--">getOpletContext</a></code></li>
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<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>Barrier</h4>
<pre>public&nbsp;Barrier(int&nbsp;queueCapacity)</pre>
<div class="block">Create a new instance.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>queueCapacity</code> - size of each input port's blocking queue</dd>
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<a name="initialize-org.apache.edgent.oplet.OpletContext-">
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<h4>initialize</h4>
<pre>public&nbsp;void&nbsp;initialize(<a href="../../../../../org/apache/edgent/oplet/OpletContext.html" title="interface in org.apache.edgent.oplet">OpletContext</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;&nbsp;context)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/Oplet.html#initialize-org.apache.edgent.oplet.OpletContext-">Oplet</a></code></span></div>
<div class="block">Initialize the oplet.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/edgent/oplet/Oplet.html#initialize-org.apache.edgent.oplet.OpletContext-">initialize</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/Oplet.html" title="interface in org.apache.edgent.oplet">Oplet</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#initialize-org.apache.edgent.oplet.OpletContext-">initialize</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html" title="class in org.apache.edgent.oplet.core">FanIn</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - the OpletContext</dd>
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<h4>start</h4>
<pre>public&nbsp;void&nbsp;start()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/Oplet.html#start--">Oplet</a></code></span></div>
<div class="block">Start the oplet. Oplets must not submit any tuples not derived from
input tuples until this method is called.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/edgent/oplet/Oplet.html#start--">start</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/Oplet.html" title="interface in org.apache.edgent.oplet">Oplet</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#start--">start</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html" title="class in org.apache.edgent.oplet.core">FanIn</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;</code></dd>
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<h4>receiver</h4>
<pre>protected&nbsp;<a href="../../../../../org/apache/edgent/function/BiFunction.html" title="interface in org.apache.edgent.function">BiFunction</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;&nbsp;receiver()</pre>
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<h4>accept</h4>
<pre>protected&nbsp;void&nbsp;accept(<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&nbsp;tuple,
int&nbsp;iportIndex)</pre>
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<h4>close</h4>
<pre>public&nbsp;void&nbsp;close()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code>&nbsp;in interface&nbsp;<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html#close--">close</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/edgent/oplet/core/FanIn.html" title="class in org.apache.edgent.oplet.core">FanIn</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>,<a href="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/edgent/oplet/plumbing/Barrier.html" title="type parameter in Barrier">T</a>&gt;&gt;</code></dd>
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