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| <div class="subTitle">org.apache.edgent.topology.spi.graph</div> |
| <h2 title="Class TWindowTimeImpl" class="title">Class TWindowTimeImpl<T,K></h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/edgent/topology/spi/graph/AbstractTWindow.html" title="class in org.apache.edgent.topology.spi.graph">org.apache.edgent.topology.spi.graph.AbstractTWindow</a><T,K></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.edgent.topology.spi.graph.TWindowTimeImpl<T,K></li> |
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| <pre>public class <span class="typeNameLabel">TWindowTimeImpl<T,K></span> |
| extends <a href="../../../../../../org/apache/edgent/topology/spi/graph/AbstractTWindow.html" title="class in org.apache.edgent.topology.spi.graph">AbstractTWindow</a><T,K></pre> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code><U> <a href="../../../../../../org/apache/edgent/topology/TStream.html" title="interface in org.apache.edgent.topology">TStream</a><U></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html#aggregate-org.apache.edgent.function.BiFunction-">aggregate</a></span>(<a href="../../../../../../org/apache/edgent/function/BiFunction.html" title="interface in org.apache.edgent.function">BiFunction</a><java.util.List<<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">T</a>>,<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">K</a>,U> processor)</code> |
| <div class="block">Window behaviour here is that: |
| |
| Tuples are always inserted into the partition.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><U> <a href="../../../../../../org/apache/edgent/topology/TStream.html" title="interface in org.apache.edgent.topology">TStream</a><U></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html#batch-org.apache.edgent.function.BiFunction-">batch</a></span>(<a href="../../../../../../org/apache/edgent/function/BiFunction.html" title="interface in org.apache.edgent.function">BiFunction</a><java.util.List<<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">T</a>>,<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">K</a>,U> batcher)</code> |
| <div class="block">Declares a stream that represents a batched aggregation of |
| partitions in this window.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html#getTime--">getTime</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>java.util.concurrent.TimeUnit</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html#getUnit--">getUnit</a></span>()</code> </td> |
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| <h3>Methods inherited from class org.apache.edgent.topology.spi.graph.<a href="../../../../../../org/apache/edgent/topology/spi/graph/AbstractTWindow.html" title="class in org.apache.edgent.topology.spi.graph">AbstractTWindow</a></h3> |
| <code><a href="../../../../../../org/apache/edgent/topology/spi/graph/AbstractTWindow.html#feeder--">feeder</a>, <a href="../../../../../../org/apache/edgent/topology/spi/graph/AbstractTWindow.html#getKeyFunction--">getKeyFunction</a>, <a href="../../../../../../org/apache/edgent/topology/spi/graph/AbstractTWindow.html#topology--">topology</a></code></li> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <h4>aggregate</h4> |
| <pre>public <U> <a href="../../../../../../org/apache/edgent/topology/TStream.html" title="interface in org.apache.edgent.topology">TStream</a><U> aggregate(<a href="../../../../../../org/apache/edgent/function/BiFunction.html" title="interface in org.apache.edgent.function">BiFunction</a><java.util.List<<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">T</a>>,<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">K</a>,U> processor)</pre> |
| <div class="block">Window behaviour here is that: |
| |
| Tuples are always inserted into the partition. |
| |
| If before insertion the partition is empty the |
| a eviction is scheduled |
| |
| After insertion the window is processed so that |
| any change triggers this continuous aggregation. |
| |
| The evict determiner evicts any tuples that have |
| been in the window longer that the configured |
| size, and invokes the processing on any eviction. |
| Multiple tuples may have been evicted before processing.</div> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>U</code> - Tuple type</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>processor</code> - Logic to aggregation a partition.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A stream that contains the latest aggregations of partitions in this window.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="batch-org.apache.edgent.function.BiFunction-"> |
| <!-- --> |
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| <h4>batch</h4> |
| <pre>public <U> <a href="../../../../../../org/apache/edgent/topology/TStream.html" title="interface in org.apache.edgent.topology">TStream</a><U> batch(<a href="../../../../../../org/apache/edgent/function/BiFunction.html" title="interface in org.apache.edgent.function">BiFunction</a><java.util.List<<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">T</a>>,<a href="../../../../../../org/apache/edgent/topology/spi/graph/TWindowTimeImpl.html" title="type parameter in TWindowTimeImpl">K</a>,U> batcher)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/edgent/topology/TWindow.html#batch-org.apache.edgent.function.BiFunction-">TWindow</a></code></span></div> |
| <div class="block">Declares a stream that represents a batched aggregation of |
| partitions in this window. |
| <P> |
| Each partition "batch" triggers an invocation of |
| <code>batcher.apply(tuples, key)</code>, where <code>tuples</code> is |
| a <code>List<T></code> containing all the tuples in the partition in |
| insertion order from oldest to newest The list is stable |
| during the batcher invocation. |
| <UL> |
| <LI>Count-based window: a batch occurs when the partition is full.</LI> |
| <LI>Time-based window: a batch occurs every "time" period units. The |
| list will be empty if no tuples have been received during the period.</LI> |
| </UL> |
| A non-null <code>batcher</code> result is added to the returned stream. |
| The partition's contents are cleared after a batch is processed. |
| </P> |
| <P> |
| Thus the returned stream will contain a sequence of tuples where the |
| most recent tuple represents the most up to date aggregation of a |
| partition.</div> |
| <dl> |
| <dt><span class="paramLabel">Type Parameters:</span></dt> |
| <dd><code>U</code> - Tuple type</dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>batcher</code> - Logic to aggregation a partition.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A stream that contains the latest aggregations of partitions in this window.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getTime--"> |
| <!-- --> |
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| <h4>getTime</h4> |
| <pre>public long getTime()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the time</dd> |
| </dl> |
| </li> |
| </ul> |
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| <!-- --> |
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| <h4>getUnit</h4> |
| <pre>public java.util.concurrent.TimeUnit getUnit()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the unit</dd> |
| </dl> |
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