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| <p class="subTitle">io.gearpump.streaming.state.api</p> |
| <h2 title="Class MonoidState" class="title">Class MonoidState<T></h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li>io.gearpump.streaming.state.api.MonoidState<T></li> |
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| <dt>All Implemented Interfaces:</dt> |
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| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../io/gearpump/streaming/state/impl/NonWindowState.html" title="class in io.gearpump.streaming.state.impl">NonWindowState</a>, <a href="../../../../../io/gearpump/streaming/state/impl/WindowState.html" title="class in io.gearpump.streaming.state.impl">WindowState</a></dd> |
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| <pre>public abstract class <strong>MonoidState<T></strong> |
| extends java.lang.Object |
| implements <a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html" title="interface in io.gearpump.streaming.state.api">PersistentState</a><T></pre> |
| <div class="block">MonoidState uses Algebird Monoid to aggregate state |
| <p> |
| on start, state value is initialized to monoid.zero |
| on each new message, existing state value is aggregated with |
| the incoming value using monoid.plus to get a new state value</div> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#MonoidState(io.gearpump.streaming.state.api.Monoid)">MonoidState</a></strong>(<a href="../../../../../io/gearpump/streaming/state/api/Monoid.html" title="interface in io.gearpump.streaming.state.api">Monoid</a><<a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a>> monoid)</code> </td> |
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| <caption><span>Methods</span><span class="tabEnd"> </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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| <td class="colFirst"><code>protected long</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#checkpointTime()">checkpointTime</a></strong>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>scala.Option<<a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a>></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#get()">get</a></strong>()</code> |
| <div class="block">unwrap the raw value of state</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#left()">left</a></strong>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#right()">right</a></strong>()</code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#setNextCheckpointTime(long)">setNextCheckpointTime</a></strong>(long nextCheckpointTime)</code> |
| <div class="block">set next checkpoint time |
| should be invoked by the framework</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html#updateState(long, T)">updateState</a></strong>(long timestamp, |
| <a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a> t)</code> </td> |
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| <h3>Methods inherited from interface io.gearpump.streaming.state.api.<a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html" title="interface in io.gearpump.streaming.state.api">PersistentState</a></h3> |
| <code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#checkpoint()">checkpoint</a>, <a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#recover(long, byte[])">recover</a>, <a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#update(long, T)">update</a></code></li> |
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| <a name="MonoidState(io.gearpump.streaming.state.api.Monoid)"> |
| <!-- --> |
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| <h4>MonoidState</h4> |
| <pre>public MonoidState(<a href="../../../../../io/gearpump/streaming/state/api/Monoid.html" title="interface in io.gearpump.streaming.state.api">Monoid</a><<a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a>> monoid)</pre> |
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| <h4>left</h4> |
| <pre>public <a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a> left()</pre> |
| </li> |
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| <li class="blockList"> |
| <h4>right</h4> |
| <pre>public <a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a> right()</pre> |
| </li> |
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| <a name="checkpointTime()"> |
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| <h4>checkpointTime</h4> |
| <pre>protected long checkpointTime()</pre> |
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| <a name="get()"> |
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| <h4>get</h4> |
| <pre>public scala.Option<<a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a>> get()</pre> |
| <div class="block"><strong>Description copied from interface: <code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#get()">PersistentState</a></code></strong></div> |
| <div class="block">unwrap the raw value of state</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#get()">get</a></code> in interface <code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html" title="interface in io.gearpump.streaming.state.api">PersistentState</a><<a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a>></code></dd> |
| <dt><span class="strong">Returns:</span></dt><dd>(undocumented)</dd></dl> |
| </li> |
| </ul> |
| <a name="setNextCheckpointTime(long)"> |
| <!-- --> |
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| <li class="blockList"> |
| <h4>setNextCheckpointTime</h4> |
| <pre>public void setNextCheckpointTime(long nextCheckpointTime)</pre> |
| <div class="block"><strong>Description copied from interface: <code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#setNextCheckpointTime(long)">PersistentState</a></code></strong></div> |
| <div class="block">set next checkpoint time |
| should be invoked by the framework</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html#setNextCheckpointTime(long)">setNextCheckpointTime</a></code> in interface <code><a href="../../../../../io/gearpump/streaming/state/api/PersistentState.html" title="interface in io.gearpump.streaming.state.api">PersistentState</a><<a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a>></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>nextCheckpointTime</code> - (undocumented)</dd></dl> |
| </li> |
| </ul> |
| <a name="updateState(long,java.lang.Object)"> |
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| <h4>updateState</h4> |
| <pre>protected void updateState(long timestamp, |
| <a href="../../../../../io/gearpump/streaming/state/api/MonoidState.html" title="type parameter in MonoidState">T</a> t)</pre> |
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