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<div class="subTitle">org.apache.storm.task</div>
<h2 title="Class OutputCollector" class="title">Class OutputCollector</h2>
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<li>org.apache.storm.task.OutputCollector</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../org/apache/storm/task/IErrorReporter.html" title="interface in org.apache.storm.task">IErrorReporter</a>, <a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></dd>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../org/apache/storm/topology/BaseStatefulBoltExecutor.AnchoringOutputCollector.html" title="class in org.apache.storm.topology">BaseStatefulBoltExecutor.AnchoringOutputCollector</a></dd>
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<pre>public class <span class="typeNameLabel">OutputCollector</span>
extends <a href="https://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="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></pre>
<div class="block"><p>This output collector exposes the API for emitting tuples from an IRichBolt. This is the core API for emitting tuples. For a simpler API, and a more restricted form of stream processing, see IBasicBolt and BasicOutputCollector.</p></div>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#OutputCollector-org.apache.storm.task.IOutputCollector-">OutputCollector</a></span>(<a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a>&nbsp;delegate)</code>&nbsp;</td>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</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="colLast" scope="col">Method and Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#ack-org.apache.storm.tuple.Tuple-">ack</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;input)</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emit-java.util.Collection-java.util.List-">emit</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a new tuple to the default stream anchored on a group of input tuples.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emit-java.util.List-">emit</a></span>(<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a new unanchored tuple to the default stream.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emit-java.lang.String-java.util.Collection-java.util.List-">emit</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Returns the task ids that received the tuples.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emit-java.lang.String-java.util.List-">emit</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a new unanchored tuple to the specified stream.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emit-java.lang.String-org.apache.storm.tuple.Tuple-java.util.List-">emit</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a new tuple to a specific stream with a single anchor.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emit-org.apache.storm.tuple.Tuple-java.util.List-">emit</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a new tuple to the default stream anchored on a single tuple.</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/storm/task/OutputCollector.html#emitDirect-int-java.util.Collection-java.util.List-">emitDirect</a></span>(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a tuple directly to the specified task id on the default stream.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emitDirect-int-java.util.List-">emitDirect</a></span>(int&nbsp;taskId,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a tuple directly to the specified task id on the default stream.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emitDirect-int-java.lang.String-java.util.Collection-java.util.List-">emitDirect</a></span>(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emitDirect-int-java.lang.String-java.util.List-">emitDirect</a></span>(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a tuple directly to the specified task id on the specified stream.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emitDirect-int-java.lang.String-org.apache.storm.tuple.Tuple-java.util.List-">emitDirect</a></span>(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a tuple directly to the specified task id on the specified stream.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#emitDirect-int-org.apache.storm.tuple.Tuple-java.util.List-">emitDirect</a></span>(int&nbsp;taskId,
<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</code>
<div class="block">Emits a tuple directly to the specified task id on the default stream.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#fail-org.apache.storm.tuple.Tuple-">fail</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;input)</code>&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#flush--">flush</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#reportError-java.lang.Throwable-">reportError</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;error)</code>&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/task/OutputCollector.html#resetTimeout-org.apache.storm.tuple.Tuple-">resetTimeout</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;input)</code>
<div class="block">Resets the message timeout for any tuple trees to which the given tuple belongs.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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="https://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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<pre>public&nbsp;OutputCollector(<a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a>&nbsp;delegate)</pre>
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<h4>emit</h4>
<pre>public&nbsp;<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;emit(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a new tuple to a specific stream with a single anchor. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>streamId</code> - the stream to emit to</dd>
<dd><code>anchor</code> - the tuple to anchor to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list of task ids that this new tuple was sent to</dd>
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<pre>public&nbsp;<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;emit(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a new unanchored tuple to the specified stream. Because it&rsquo;s unanchored, if a failure happens downstream, this new tuple won&rsquo;t affect whether any spout tuples are considered failed or not. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>streamId</code> - the stream to emit to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list of task ids that this new tuple was sent to</dd>
</dl>
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<pre>public&nbsp;<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;emit(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a new tuple to the default stream anchored on a group of input tuples. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>anchors</code> - the tuples to anchor to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list of task ids that this new tuple was sent to</dd>
</dl>
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<pre>public&nbsp;<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;emit(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a new tuple to the default stream anchored on a single tuple. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>anchor</code> - the tuple to anchor to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list of task ids that this new tuple was sent to</dd>
</dl>
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<pre>public&nbsp;<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;emit(<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a new unanchored tuple to the default stream. Beacuse it&rsquo;s unanchored, if a failure happens downstream, this new tuple won&rsquo;t affect whether any spout tuples are considered failed or not. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list of task ids that this new tuple was sent to</dd>
</dl>
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<h4>emit</h4>
<pre>public&nbsp;<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;emit(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html#emit-java.lang.String-java.util.Collection-java.util.List-">IOutputCollector</a></code></span></div>
<div class="block"><p>Returns the task ids that received the tuples.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IOutputCollector.html#emit-java.lang.String-java.util.Collection-java.util.List-">emit</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></code></dd>
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<pre>public&nbsp;void&nbsp;emitDirect(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a tuple directly to the specified task id on the specified stream. If the target bolt does not subscribe to this bolt using a direct grouping, the tuple will not be sent. If the specified output stream is not declared as direct, or the target bolt subscribes with a non-direct grouping, an error will occur at runtime. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskId</code> - the taskId to send the new tuple to</dd>
<dd><code>streamId</code> - the stream to send the tuple on. It must be declared as a direct stream in the topology definition.</dd>
<dd><code>anchor</code> - the tuple to anchor to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
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<pre>public&nbsp;void&nbsp;emitDirect(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a tuple directly to the specified task id on the specified stream. If the target bolt does not subscribe to this bolt using a direct grouping, the tuple will not be sent. If the specified output stream is not declared as direct, or the target bolt subscribes with a non-direct grouping, an error will occur at runtime. Note that this method does not use anchors, so downstream failures won&rsquo;t affect the failure status of any spout tuples. The emitted values must be immutable.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskId</code> - the taskId to send the new tuple to</dd>
<dd><code>streamId</code> - the stream to send the tuple on. It must be declared as a direct stream in the topology definition.</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
</dl>
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<pre>public&nbsp;void&nbsp;emitDirect(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a tuple directly to the specified task id on the default stream. If the target bolt does not subscribe to this bolt using a direct grouping, the tuple will not be sent. If the specified output stream is not declared as direct, or the target bolt subscribes with a non-direct grouping, an error will occur at runtime. The emitted values must be immutable.</p><p><p>The default stream must be declared as direct in the topology definition. See OutputDeclarer#declare for how this is done when defining topologies in Java.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskId</code> - the taskId to send the new tuple to</dd>
<dd><code>anchors</code> - the tuples to anchor to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
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<pre>public&nbsp;void&nbsp;emitDirect(int&nbsp;taskId,
<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;anchor,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a tuple directly to the specified task id on the default stream. If the target bolt does not subscribe to this bolt using a direct grouping, the tuple will not be sent. If the specified output stream is not declared as direct, or the target bolt subscribes with a non-direct grouping, an error will occur at runtime. The emitted values must be immutable.</p><p><p>The default stream must be declared as direct in the topology definition. See OutputDeclarer#declare for how this is done when defining topologies in Java.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskId</code> - the taskId to send the new tuple to</dd>
<dd><code>anchor</code> - the tuple to anchor to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
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<pre>public&nbsp;void&nbsp;emitDirect(int&nbsp;taskId,
<a href="https://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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;tuple)</pre>
<div class="block"><p>Emits a tuple directly to the specified task id on the default stream. If the target bolt does not subscribe to this bolt using a direct grouping, the tuple will not be sent. If the specified output stream is not declared as direct, or the target bolt subscribes with a non-direct grouping, an error will occur at runtime. The emitted values must be immutable.</p><p><p>The default stream must be declared as direct in the topology definition. See OutputDeclarer#declare for how this is done when defining topologies in Java.&lt;</p><p><p>Note that this method does not use anchors, so downstream failures won&rsquo;t affect the failure status of any spout tuples.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskId</code> - the taskId to send the new tuple to</dd>
<dd><code>tuple</code> - the new output tuple from this bolt</dd>
</dl>
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<pre>public&nbsp;void&nbsp;emitDirect(int&nbsp;taskId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;streamId,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&gt;&nbsp;anchors,
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<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IOutputCollector.html#emitDirect-int-java.lang.String-java.util.Collection-java.util.List-">emitDirect</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></code></dd>
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<pre>public&nbsp;void&nbsp;ack(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;input)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IOutputCollector.html#ack-org.apache.storm.tuple.Tuple-">ack</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></code></dd>
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<pre>public&nbsp;void&nbsp;fail(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;input)</pre>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IOutputCollector.html#fail-org.apache.storm.tuple.Tuple-">fail</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></code></dd>
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<pre>public&nbsp;void&nbsp;resetTimeout(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a>&nbsp;input)</pre>
<div class="block"><p>Resets the message timeout for any tuple trees to which the given tuple belongs. The timeout is reset to Config.TOPOLOGY_MESSAGE_TIMEOUT_SECS. Note that this is an expensive operation, and should be used sparingly.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IOutputCollector.html#resetTimeout-org.apache.storm.tuple.Tuple-">resetTimeout</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>input</code> - the tuple to reset timeout for</dd>
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<pre>public&nbsp;void&nbsp;reportError(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;error)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IErrorReporter.html#reportError-java.lang.Throwable-">reportError</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IErrorReporter.html" title="interface in org.apache.storm.task">IErrorReporter</a></code></dd>
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<pre>public&nbsp;void&nbsp;flush()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/storm/task/IOutputCollector.html#flush--">flush</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/storm/task/IOutputCollector.html" title="interface in org.apache.storm.task">IOutputCollector</a></code></dd>
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