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| <h2 title="Interface TriggerPolicy" class="title">Interface TriggerPolicy<T extends java.io.Serializable,​S></h2> |
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| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>T</code> - the type of the event that is tracked</dd> |
| <dd><code>S</code> - the type of state that is used</dd> |
| </dl> |
| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="triggers/AbstractBaseTriggerPolicy.html" title="class in org.apache.heron.api.windowing.triggers">AbstractBaseTriggerPolicy</a></code>, <code><a href="triggers/CountTriggerPolicy.html" title="class in org.apache.heron.api.windowing.triggers">CountTriggerPolicy</a></code>, <code><a href="triggers/TimeTriggerPolicy.html" title="class in org.apache.heron.api.windowing.triggers">TimeTriggerPolicy</a></code>, <code><a href="triggers/WatermarkCountTriggerPolicy.html" title="class in org.apache.heron.api.windowing.triggers">WatermarkCountTriggerPolicy</a></code>, <code><a href="triggers/WatermarkTimeTriggerPolicy.html" title="class in org.apache.heron.api.windowing.triggers">WatermarkTimeTriggerPolicy</a></code></dd> |
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| <hr> |
| <pre>public interface <span class="typeNameLabel">TriggerPolicy<T extends java.io.Serializable,​S></span></pre> |
| <div class="block">Triggers the window calculations based on the policy.</div> |
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| <table class="memberSummary"> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">S</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getState()">getState</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Return runtime state to be checkpointed by the framework for restoring the trigger policy |
| in case of failures.</div> |
| </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="#reset()">reset</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">resets the trigger policy.</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="#restoreState(S)">restoreState</a></span>​(<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">S</a> state)</code></th> |
| <td class="colLast"> |
| <div class="block">Restore the trigger policy from the state that was earlier checkpointed by the framework.</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="#setEvictionPolicy(org.apache.heron.api.windowing.EvictionPolicy)">setEvictionPolicy</a></span>​(<a href="EvictionPolicy.html" title="interface in org.apache.heron.api.windowing">EvictionPolicy</a><<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">T</a>,​?> evictionPolicy)</code></th> |
| <td class="colLast"> |
| <div class="block">Set the eviction policy to whatever eviction policy to use this with</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="#setTopologyConfig(java.util.Map)">setTopologyConfig</a></span>​(java.util.Map<java.lang.String,​java.lang.Object> config)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets the Config used for this topology</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="#setTriggerHandler(org.apache.heron.api.windowing.TriggerHandler)">setTriggerHandler</a></span>​(<a href="TriggerHandler.html" title="interface in org.apache.heron.api.windowing">TriggerHandler</a> triggerHandler)</code></th> |
| <td class="colLast"> |
| <div class="block">Set the trigger handler for this trigger policy to trigger</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setWindowManager(org.apache.heron.api.windowing.WindowManager)">setWindowManager</a></span>​(<a href="WindowManager.html" title="class in org.apache.heron.api.windowing">WindowManager</a><<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">T</a>> windowManager)</code></th> |
| <td class="colLast"> |
| <div class="block">Sets the window manager that uses this trigger policy</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#shutdown()">shutdown</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Any clean up could be handled here.</div> |
| </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="#start()">start</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Starts the trigger policy.</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="#track(org.apache.heron.api.windowing.Event)">track</a></span>​(<a href="Event.html" title="interface in org.apache.heron.api.windowing">Event</a><<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">T</a>> event)</code></th> |
| <td class="colLast"> |
| <div class="block">Tracks the event and could use this to invoke the trigger.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h4>track</h4> |
| <pre class="methodSignature">void track​(<a href="Event.html" title="interface in org.apache.heron.api.windowing">Event</a><<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">T</a>> event)</pre> |
| <div class="block">Tracks the event and could use this to invoke the trigger.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>event</code> - the input event</dd> |
| </dl> |
| </li> |
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| <h4>reset</h4> |
| <pre class="methodSignature">void reset()</pre> |
| <div class="block">resets the trigger policy.</div> |
| </li> |
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| <h4>start</h4> |
| <pre class="methodSignature">void start()</pre> |
| <div class="block">Starts the trigger policy. This can be used |
| during recovery to start the triggers after |
| recovery is complete.</div> |
| </li> |
| </ul> |
| <a id="shutdown()"> |
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| <h4>shutdown</h4> |
| <pre class="methodSignature">void shutdown()</pre> |
| <div class="block">Any clean up could be handled here.</div> |
| </li> |
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| <a id="getState()"> |
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| <h4>getState</h4> |
| <pre class="methodSignature"><a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">S</a> getState()</pre> |
| <div class="block">Return runtime state to be checkpointed by the framework for restoring the trigger policy |
| in case of failures.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the state</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="restoreState(java.lang.Object)"> |
| <!-- --> |
| </a><a id="restoreState(S)"> |
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| <h4>restoreState</h4> |
| <pre class="methodSignature">void restoreState​(<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">S</a> state)</pre> |
| <div class="block">Restore the trigger policy from the state that was earlier checkpointed by the framework.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>state</code> - the state</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="setEvictionPolicy(org.apache.heron.api.windowing.EvictionPolicy)"> |
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| <h4>setEvictionPolicy</h4> |
| <pre class="methodSignature">void setEvictionPolicy​(<a href="EvictionPolicy.html" title="interface in org.apache.heron.api.windowing">EvictionPolicy</a><<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">T</a>,​?> evictionPolicy)</pre> |
| <div class="block">Set the eviction policy to whatever eviction policy to use this with</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>evictionPolicy</code> - the eviction policy</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>setTriggerHandler</h4> |
| <pre class="methodSignature">void setTriggerHandler​(<a href="TriggerHandler.html" title="interface in org.apache.heron.api.windowing">TriggerHandler</a> triggerHandler)</pre> |
| <div class="block">Set the trigger handler for this trigger policy to trigger</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>triggerHandler</code> - the trigger handler</dd> |
| </dl> |
| </li> |
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| <h4>setWindowManager</h4> |
| <pre class="methodSignature">void setWindowManager​(<a href="WindowManager.html" title="class in org.apache.heron.api.windowing">WindowManager</a><<a href="TriggerPolicy.html" title="type parameter in TriggerPolicy">T</a>> windowManager)</pre> |
| <div class="block">Sets the window manager that uses this trigger policy</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>windowManager</code> - the window manager</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>setTopologyConfig</h4> |
| <pre class="methodSignature">void setTopologyConfig​(java.util.Map<java.lang.String,​java.lang.Object> config)</pre> |
| <div class="block">Sets the Config used for this topology</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>config</code> - the configuration policy</dd> |
| </dl> |
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