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| <div class="subTitle">org.apache.beam.sdk.transforms.windowing</div> |
| <h2 title="Class WindowFn.MergeContext" class="title">Class WindowFn.MergeContext</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <li>org.apache.beam.sdk.transforms.windowing.WindowFn.MergeContext</li> |
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| <dt>Enclosing class:</dt> |
| <dd><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">T</a>,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a> extends <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a>></dd> |
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| <pre>public abstract class <span class="typeNameLabel">WindowFn.MergeContext</span> |
| extends java.lang.Object</pre> |
| <div class="block">Information available when running <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#mergeWindows-org.apache.beam.sdk.transforms.windowing.WindowFn.MergeContext-"><code>WindowFn.mergeWindows(org.apache.beam.sdk.transforms.windowing.WindowFn<T, W>.MergeContext)</code></a>.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.MergeContext.html#MergeContext--">MergeContext</a></span>()</code> </td> |
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| <td class="colFirst"><code>abstract void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.MergeContext.html#merge-java.util.Collection-W-">merge</a></span>(java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a>> toBeMerged, |
| <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a> mergeResult)</code> |
| <div class="block">Signals to the framework that the windows in <code>toBeMerged</code> should be merged together to |
| form <code>mergeResult</code>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>abstract java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.MergeContext.html#windows--">windows</a></span>()</code> |
| <div class="block">Returns the current set of windows.</div> |
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| <h4>MergeContext</h4> |
| <pre>public MergeContext()</pre> |
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| <h4>windows</h4> |
| <pre>public abstract java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a>> windows()</pre> |
| <div class="block">Returns the current set of windows.</div> |
| </li> |
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| <a name="merge-java.util.Collection-org.apache.beam.sdk.transforms.windowing.BoundedWindow-"> |
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| <h4>merge</h4> |
| <pre>public abstract void merge(java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a>> toBeMerged, |
| <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="type parameter in WindowFn">W</a> mergeResult) |
| throws java.lang.Exception</pre> |
| <div class="block">Signals to the framework that the windows in <code>toBeMerged</code> should be merged together to |
| form <code>mergeResult</code>. |
| |
| <p><code>toBeMerged</code> should be a subset of <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.MergeContext.html#windows--"><code>windows()</code></a> and disjoint from the <code>toBeMerged</code> set of previous calls to <code>merge</code>. |
| |
| <p><code>mergeResult</code> must either not be in <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.MergeContext.html#windows--"><code>windows()</code></a> or be in <code>toBeMerged</code>.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalArgumentException</code> - if any elements of toBeMerged are not in windows(), or have |
| already been merged</dd> |
| <dd><code>java.lang.Exception</code></dd> |
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