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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">backtype.storm.hooks</a></div>
<h2 title="Class ITaskHookDelegate" class="title">Class ITaskHookDelegate</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>backtype.storm.hooks.ITaskHookDelegate</li>
</ul>
</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
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<hr>
<pre>public class <span class="typeNameLabel">ITaskHookDelegate</span>
extends java.lang.Object
implements <a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></pre>
<div class="block">There would be types of task hooks inside ITaskHookDelegate:
1. task hook's classes specified in config statically.
The task hooks' objects would be instantiated by using reflection and added into
the list of ITaskHook when the method
prepare(Map conf, org.apache.heron.api.topology.TopologyContext context)
is invoked.
2. task hook added dynamically by invoking addHook(ITaskHook)</div>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">ITaskHookDelegate</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<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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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addHook(backtype.storm.hooks.ITaskHook)">addHook</a></span>&#8203;(<a href="ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a>&nbsp;hook)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#boltAck(org.apache.heron.api.hooks.info.BoltAckInfo)">boltAck</a></span>&#8203;(<a href="../../../org/apache/heron/api/hooks/info/BoltAckInfo.html" title="class in org.apache.heron.api.hooks.info">BoltAckInfo</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Called in bolt everytime a tuple gets acked</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#boltExecute(org.apache.heron.api.hooks.info.BoltExecuteInfo)">boltExecute</a></span>&#8203;(<a href="../../../org/apache/heron/api/hooks/info/BoltExecuteInfo.html" title="class in org.apache.heron.api.hooks.info">BoltExecuteInfo</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Called in bolt everytime a tuple gets executed</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#boltFail(org.apache.heron.api.hooks.info.BoltFailInfo)">boltFail</a></span>&#8203;(<a href="../../../org/apache/heron/api/hooks/info/BoltFailInfo.html" title="class in org.apache.heron.api.hooks.info">BoltFailInfo</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Called in bolt everytime a tuple gets failed</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cleanup()">cleanup</a></span>()</code></th>
<td class="colLast">
<div class="block">Called just before the spout/bolt's cleanup method is called.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#emit(org.apache.heron.api.hooks.info.EmitInfo)">emit</a></span>&#8203;(<a href="../../../org/apache/heron/api/hooks/info/EmitInfo.html" title="class in org.apache.heron.api.hooks.info">EmitInfo</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Called everytime a tuple is emitted in spout/bolt</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.util.Map</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getConf()">getConf</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.util.List&lt;<a href="ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHooks()">getHooks</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#prepare(java.util.Map,org.apache.heron.api.topology.TopologyContext)">prepare</a></span>&#8203;(java.util.Map&lt;java.lang.String,&#8203;java.lang.Object&gt;&nbsp;newConf,
<a href="../../../org/apache/heron/api/topology/TopologyContext.html" title="interface in org.apache.heron.api.topology">TopologyContext</a>&nbsp;context)</code></th>
<td class="colLast">
<div class="block">Called after the spout/bolt's open/prepare method is called
conf is the Config thats passed to the topology</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#spoutAck(org.apache.heron.api.hooks.info.SpoutAckInfo)">spoutAck</a></span>&#8203;(<a href="../../../org/apache/heron/api/hooks/info/SpoutAckInfo.html" title="class in org.apache.heron.api.hooks.info">SpoutAckInfo</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Called in spout everytime a tuple gets acked</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#spoutFail(org.apache.heron.api.hooks.info.SpoutFailInfo)">spoutFail</a></span>&#8203;(<a href="../../../org/apache/heron/api/hooks/info/SpoutFailInfo.html" title="class in org.apache.heron.api.hooks.info">SpoutFailInfo</a>&nbsp;info)</code></th>
<td class="colLast">
<div class="block">Called in spout everytime a tuple gets failed</div>
</td>
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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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<h4>ITaskHookDelegate</h4>
<pre>public&nbsp;ITaskHookDelegate()</pre>
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<h4>addHook</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;addHook&#8203;(<a href="ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a>&nbsp;hook)</pre>
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<h4>getHooks</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;<a href="ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a>&gt;&nbsp;getHooks()</pre>
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<h4>getConf</h4>
<pre class="methodSignature">public&nbsp;java.util.Map&nbsp;getConf()</pre>
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<h4>prepare</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;prepare&#8203;(java.util.Map&lt;java.lang.String,&#8203;java.lang.Object&gt;&nbsp;newConf,
<a href="../../../org/apache/heron/api/topology/TopologyContext.html" title="interface in org.apache.heron.api.topology">TopologyContext</a>&nbsp;context)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#prepare(java.util.Map,org.apache.heron.api.topology.TopologyContext)">ITaskHook</a></code></span></div>
<div class="block">Called after the spout/bolt's open/prepare method is called
conf is the Config thats passed to the topology</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#prepare(java.util.Map,org.apache.heron.api.topology.TopologyContext)">prepare</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
</dl>
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<h4>cleanup</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;cleanup()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#cleanup()">ITaskHook</a></code></span></div>
<div class="block">Called just before the spout/bolt's cleanup method is called.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#cleanup()">cleanup</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
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<h4>emit</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;emit&#8203;(<a href="../../../org/apache/heron/api/hooks/info/EmitInfo.html" title="class in org.apache.heron.api.hooks.info">EmitInfo</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#emit(org.apache.heron.api.hooks.info.EmitInfo)">ITaskHook</a></code></span></div>
<div class="block">Called everytime a tuple is emitted in spout/bolt</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#emit(org.apache.heron.api.hooks.info.EmitInfo)">emit</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
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<h4>spoutAck</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;spoutAck&#8203;(<a href="../../../org/apache/heron/api/hooks/info/SpoutAckInfo.html" title="class in org.apache.heron.api.hooks.info">SpoutAckInfo</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#spoutAck(org.apache.heron.api.hooks.info.SpoutAckInfo)">ITaskHook</a></code></span></div>
<div class="block">Called in spout everytime a tuple gets acked</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#spoutAck(org.apache.heron.api.hooks.info.SpoutAckInfo)">spoutAck</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
</dl>
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<a id="spoutFail(org.apache.heron.api.hooks.info.SpoutFailInfo)">
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<h4>spoutFail</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;spoutFail&#8203;(<a href="../../../org/apache/heron/api/hooks/info/SpoutFailInfo.html" title="class in org.apache.heron.api.hooks.info">SpoutFailInfo</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#spoutFail(org.apache.heron.api.hooks.info.SpoutFailInfo)">ITaskHook</a></code></span></div>
<div class="block">Called in spout everytime a tuple gets failed</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#spoutFail(org.apache.heron.api.hooks.info.SpoutFailInfo)">spoutFail</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
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<h4>boltAck</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;boltAck&#8203;(<a href="../../../org/apache/heron/api/hooks/info/BoltAckInfo.html" title="class in org.apache.heron.api.hooks.info">BoltAckInfo</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#boltAck(org.apache.heron.api.hooks.info.BoltAckInfo)">ITaskHook</a></code></span></div>
<div class="block">Called in bolt everytime a tuple gets acked</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#boltAck(org.apache.heron.api.hooks.info.BoltAckInfo)">boltAck</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
</dl>
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<h4>boltFail</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;boltFail&#8203;(<a href="../../../org/apache/heron/api/hooks/info/BoltFailInfo.html" title="class in org.apache.heron.api.hooks.info">BoltFailInfo</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#boltFail(org.apache.heron.api.hooks.info.BoltFailInfo)">ITaskHook</a></code></span></div>
<div class="block">Called in bolt everytime a tuple gets failed</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#boltFail(org.apache.heron.api.hooks.info.BoltFailInfo)">boltFail</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html" title="interface in org.apache.heron.api.hooks">ITaskHook</a></code></dd>
</dl>
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</ul>
<a id="boltExecute(org.apache.heron.api.hooks.info.BoltExecuteInfo)">
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<h4>boltExecute</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;boltExecute&#8203;(<a href="../../../org/apache/heron/api/hooks/info/BoltExecuteInfo.html" title="class in org.apache.heron.api.hooks.info">BoltExecuteInfo</a>&nbsp;info)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../org/apache/heron/api/hooks/ITaskHook.html#boltExecute(org.apache.heron.api.hooks.info.BoltExecuteInfo)">ITaskHook</a></code></span></div>
<div class="block">Called in bolt everytime a tuple gets executed</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
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