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<div class="subTitle">org.apache.edgent.runtime.etiao</div>
<h2 title="Class Invocation" class="title">Class Invocation&lt;T extends <a href="../../../../../org/apache/edgent/oplet/Oplet.html" title="interface in org.apache.edgent.oplet">Oplet</a>&lt;I,O&gt;,I,O&gt;</h2>
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<li>
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<li>org.apache.edgent.runtime.etiao.Invocation&lt;T,I,O&gt;</li>
</ul>
</li>
</ul>
<div class="description">
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - Oplet type.</dd>
<dd><code>I</code> - Data container type for input tuples.</dd>
<dd><code>O</code> - Data container type for output tuples.</dd>
</dl>
<dl>
<dt>All Implemented Interfaces:</dt>
<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></dd>
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<pre>public class <span class="typeNameLabel">Invocation&lt;T extends <a href="../../../../../org/apache/edgent/oplet/Oplet.html" title="interface in org.apache.edgent.oplet">Oplet</a>&lt;I,O&gt;,I,O&gt;</span>
extends <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <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></pre>
<div class="block">An <a href="../../../../../org/apache/edgent/oplet/Oplet.html" title="interface in org.apache.edgent.oplet"><code>Oplet</code></a> invocation in the context of the
<a href="../../../../../org/apache/edgent/runtime/etiao/package-summary.html">ETIAO</a> runtime.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#ID_PREFIX">ID_PREFIX</a></span></code>
<div class="block">Prefix used by oplet unique identifiers.</div>
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<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#Invocation-java.lang.String-T-int-int-">Invocation</a></span>(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id,
<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">T</a>&nbsp;oplet,
int&nbsp;inputCount,
int&nbsp;outputCount)</code>&nbsp;</td>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#addOutput--">addOutput</a></span>()</code>
<div class="block">Adds a new output.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.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/runtime/etiao/Invocation.html#disconnect-int-">disconnect</a></span>(int&nbsp;port)</code>
<div class="block">Disconnects the specified port by connecting to a no-op <code>Consumer</code> implementation.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#getId--">getId</a></span>()</code>
<div class="block">Returns the unique identifier associated with this <code>Invocation</code>.</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code><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;? extends <a href="../../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">I</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#getInputs--">getInputs</a></span>()</code>
<div class="block">Returns the list of input stream forwarders for this invocation.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">T</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#getOplet--">getOplet</a></span>()</code>
<div class="block">Returns the oplet associated with this <code>Invocation</code>.</div>
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#getOutputCount--">getOutputCount</a></span>()</code>
<div class="block">Returns the number of outputs for this invocation.</div>
</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#initialize-org.apache.edgent.oplet.JobContext-org.apache.edgent.execution.services.RuntimeServices-">initialize</a></span>(<a href="../../../../../org/apache/edgent/oplet/JobContext.html" title="interface in org.apache.edgent.oplet">JobContext</a>&nbsp;job,
<a href="../../../../../org/apache/edgent/execution/services/RuntimeServices.html" title="interface in org.apache.edgent.execution.services">RuntimeServices</a>&nbsp;services)</code>
<div class="block">Initialize the invocation.</div>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#setContext-int-org.apache.edgent.oplet.OutputPortContext-">setContext</a></span>(int&nbsp;port,
<a href="../../../../../org/apache/edgent/oplet/OutputPortContext.html" title="interface in org.apache.edgent.oplet">OutputPortContext</a>&nbsp;context)</code>
<div class="block">Set the specified output port's context.</div>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#setTarget-int-org.apache.edgent.function.Consumer-">setTarget</a></span>(int&nbsp;port,
<a href="../../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">O</a>&gt;&nbsp;target)</code>
<div class="block">Disconnects the specified port and reconnects it to the specified target.</div>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#start--">start</a></span>()</code>
<div class="block">Start the oplet.</div>
</td>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html#toString--">toString</a></span>()</code>
<div class="block">For debug.</div>
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<pre>public static final&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ID_PREFIX</pre>
<div class="block">Prefix used by oplet unique identifiers.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#org.apache.edgent.runtime.etiao.Invocation.ID_PREFIX">Constant Field Values</a></dd>
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<h4>Invocation</h4>
<pre>protected&nbsp;Invocation(<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id,
<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">T</a>&nbsp;oplet,
int&nbsp;inputCount,
int&nbsp;outputCount)</pre>
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<h4>getId</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getId()</pre>
<div class="block">Returns the unique identifier associated with this <code>Invocation</code>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>unique identifier</dd>
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<pre>public&nbsp;<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">T</a>&nbsp;getOplet()</pre>
<div class="block">Returns the oplet associated with this <code>Invocation</code>.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the oplet associated with this invocation</dd>
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<pre>public&nbsp;int&nbsp;getOutputCount()</pre>
<div class="block">Returns the number of outputs for this invocation.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of outputs</dd>
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<pre>public&nbsp;int&nbsp;addOutput()</pre>
<div class="block">Adds a new output. By default, the output is connected to a Consumer
that discards all items passed to it.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>the index of the new output</dd>
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<h4>disconnect</h4>
<pre>public&nbsp;void&nbsp;disconnect(int&nbsp;port)</pre>
<div class="block">Disconnects the specified port by connecting to a no-op <code>Consumer</code> implementation.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>port</code> - the port index</dd>
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<pre>public&nbsp;void&nbsp;setTarget(int&nbsp;port,
<a href="../../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">O</a>&gt;&nbsp;target)</pre>
<div class="block">Disconnects the specified port and reconnects it to the specified target.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>port</code> - index of the port which is reconnected</dd>
<dd><code>target</code> - target the port gets connected to</dd>
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<pre>public&nbsp;void&nbsp;setContext(int&nbsp;port,
<a href="../../../../../org/apache/edgent/oplet/OutputPortContext.html" title="interface in org.apache.edgent.oplet">OutputPortContext</a>&nbsp;context)</pre>
<div class="block">Set the specified output port's context.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>port</code> - index of the output port</dd>
<dd><code>context</code> - the new <a href="../../../../../org/apache/edgent/oplet/OutputPortContext.html" title="interface in org.apache.edgent.oplet"><code>OutputPortContext</code></a></dd>
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<pre>public&nbsp;<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;? extends <a href="../../../../../org/apache/edgent/function/Consumer.html" title="interface in org.apache.edgent.function">Consumer</a>&lt;<a href="../../../../../org/apache/edgent/runtime/etiao/Invocation.html" title="type parameter in Invocation">I</a>&gt;&gt;&nbsp;getInputs()</pre>
<div class="block">Returns the list of input stream forwarders for this invocation.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list</dd>
</dl>
</li>
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<h4>initialize</h4>
<pre>public&nbsp;void&nbsp;initialize(<a href="../../../../../org/apache/edgent/oplet/JobContext.html" title="interface in org.apache.edgent.oplet">JobContext</a>&nbsp;job,
<a href="../../../../../org/apache/edgent/execution/services/RuntimeServices.html" title="interface in org.apache.edgent.execution.services">RuntimeServices</a>&nbsp;services)</pre>
<div class="block">Initialize the invocation.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>job</code> - the context of the current job</dd>
<dd><code>services</code> - service provider for this invocation</dd>
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<h4>start</h4>
<pre>public&nbsp;void&nbsp;start()</pre>
<div class="block">Start the oplet. Oplets must not submit any tuples not derived from
input tuples until this method is called.</div>
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<h4>close</h4>
<pre>public&nbsp;void&nbsp;close()
throws <a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></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="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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<h4>toString</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;toString()</pre>
<div class="block">For debug. Contents subject to change.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><a href="http://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
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