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| <div class="subTitle">org.apache.beam.sdk.transforms.windowing</div> |
| <h2 title="Class SlidingWindows" class="title">Class SlidingWindows</h2> |
| </div> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">org.apache.beam.sdk.transforms.windowing.WindowFn</a><T,W></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/NonMergingWindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">org.apache.beam.sdk.transforms.windowing.NonMergingWindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.transforms.windowing.SlidingWindows</li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>java.io.Serializable, <a href="../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></dd> |
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| <pre>public class <span class="typeNameLabel">SlidingWindows</span> |
| extends <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/NonMergingWindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">NonMergingWindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></pre> |
| <div class="block">A <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> that windows values into possibly overlapping fixed-size timestamp-based |
| windows. |
| |
| <p>For example, in order to window data into 10 minute windows that update every minute: |
| |
| <pre><code> |
| PCollection<Integer> items = ...; |
| PCollection<Integer> windowedItems = items.apply( |
| Window.<Integer>into(SlidingWindows.of(Duration.standardMinutes(10)))); |
| </code></pre></div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../serialized-form.html#org.apache.beam.sdk.transforms.windowing.SlidingWindows">Serialized Form</a></dd> |
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| <h3>Nested classes/interfaces inherited from class org.apache.beam.sdk.transforms.windowing.<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a></h3> |
| <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.AssignContext.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn.AssignContext</a>, <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.MergeContext.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn.MergeContext</a></code></li> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#assignsToOneWindow--">assignsToOneWindow</a></span>()</code> |
| <div class="block">Returns true if this <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> always assigns an element to exactly one window.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#assignWindows-org.joda.time.Instant-">assignWindows</a></span>(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> timestamp)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#assignWindows-org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext-">assignWindows</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.AssignContext.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn.AssignContext</a> c)</code> |
| <div class="block">Given a timestamp and element, returns the set of windows into which it should be placed.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#equals-java.lang.Object-">equals</a></span>(java.lang.Object object)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html" title="class in org.apache.beam.sdk.transforms.windowing">SlidingWindows</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#every-org.joda.time.Duration-">every</a></span>(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> period)</code> |
| <div class="block">Returns a new <code>SlidingWindows</code> with the original size, that assigns timestamps into |
| half-open intervals of the form [N * period, N * period + size), where 0 is the epoch.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowMappingFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowMappingFn</a><<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#getDefaultWindowMappingFn--">getDefaultWindowMappingFn</a></span>()</code> |
| <div class="block">Return a <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowMappingFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowMappingFn</code></a> that returns the earliest window that contains the end of the |
| main-input window.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#getOffset--">getOffset</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#getOutputTime-org.joda.time.Instant-org.apache.beam.sdk.transforms.windowing.IntervalWindow-">getOutputTime</a></span>(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> inputTimestamp, |
| <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a> window)</code> |
| <div class="block">Ensures that later sliding windows have an output time that is past the end of earlier windows.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#getPeriod--">getPeriod</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#getSize--">getSize</a></span>()</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#hashCode--">hashCode</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#isCompatible-org.apache.beam.sdk.transforms.windowing.WindowFn-">isCompatible</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><?,?> other)</code> |
| <div class="block">Returns whether this performs the same merging as the given <code>WindowFn</code>.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html" title="class in org.apache.beam.sdk.transforms.windowing">SlidingWindows</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#of-org.joda.time.Duration-">of</a></span>(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> size)</code> |
| <div class="block">Assigns timestamps into half-open intervals of the form [N * period, N * period + size), where |
| 0 is the epoch.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a> builder)</code> |
| <div class="block">Register display data for the given transform or component.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#verifyCompatibility-org.apache.beam.sdk.transforms.windowing.WindowFn-">verifyCompatibility</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><?,?> other)</code> |
| <div class="block">Throw <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IncompatibleWindowException.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>IncompatibleWindowException</code></a> if this WindowFn does not perform the same merging as |
| the given $<code>WindowFn</code>.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#windowCoder--">windowCoder</a></span>()</code> |
| <div class="block">Returns the <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> used for serializing the windows used by this windowFn.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html" title="class in org.apache.beam.sdk.transforms.windowing">SlidingWindows</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#withOffset-org.joda.time.Duration-">withOffset</a></span>(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> offset)</code> |
| <div class="block">Assigns timestamps into half-open intervals of the form [N * period + offset, N * period + |
| offset + size).</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class org.apache.beam.sdk.transforms.windowing.<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/NonMergingWindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">NonMergingWindowFn</a></h3> |
| <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/NonMergingWindowFn.html#isNonMerging--">isNonMerging</a>, <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/NonMergingWindowFn.html#mergeWindows-org.apache.beam.sdk.transforms.windowing.WindowFn.MergeContext-">mergeWindows</a></code></li> |
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| <h3>Methods inherited from class org.apache.beam.sdk.transforms.windowing.<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a></h3> |
| <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#getWindowTypeDescriptor--">getWindowTypeDescriptor</a></code></li> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
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| <h3>Method Detail</h3> |
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| <h4>of</h4> |
| <pre>public static <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html" title="class in org.apache.beam.sdk.transforms.windowing">SlidingWindows</a> of(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> size)</pre> |
| <div class="block">Assigns timestamps into half-open intervals of the form [N * period, N * period + size), where |
| 0 is the epoch. |
| |
| <p>If <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html#every-org.joda.time.Duration-"><code>every(org.joda.time.Duration)</code></a> is not called, the period defaults to the largest time unit |
| smaller than the given duration. For example, specifying a size of 5 seconds will result in a |
| default period of 1 second.</div> |
| </li> |
| </ul> |
| <a name="every-org.joda.time.Duration-"> |
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| </a> |
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| <h4>every</h4> |
| <pre>public <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html" title="class in org.apache.beam.sdk.transforms.windowing">SlidingWindows</a> every(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> period)</pre> |
| <div class="block">Returns a new <code>SlidingWindows</code> with the original size, that assigns timestamps into |
| half-open intervals of the form [N * period, N * period + size), where 0 is the epoch.</div> |
| </li> |
| </ul> |
| <a name="withOffset-org.joda.time.Duration-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>withOffset</h4> |
| <pre>public <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/SlidingWindows.html" title="class in org.apache.beam.sdk.transforms.windowing">SlidingWindows</a> withOffset(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> offset)</pre> |
| <div class="block">Assigns timestamps into half-open intervals of the form [N * period + offset, N * period + |
| offset + size).</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalArgumentException</code> - if offset is not in [0, period)</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="windowCoder--"> |
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| <h4>windowCoder</h4> |
| <pre>public <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders">Coder</a><<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>> windowCoder()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#windowCoder--">WindowFn</a></code></span></div> |
| <div class="block">Returns the <a href="../../../../../../org/apache/beam/sdk/coders/Coder.html" title="class in org.apache.beam.sdk.coders"><code>Coder</code></a> used for serializing the windows used by this windowFn.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#windowCoder--">windowCoder</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="assignWindows-org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>assignWindows</h4> |
| <pre>public java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>> assignWindows(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.AssignContext.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn.AssignContext</a> c)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#assignWindows-org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext-">WindowFn</a></code></span></div> |
| <div class="block">Given a timestamp and element, returns the set of windows into which it should be placed.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#assignWindows-org.apache.beam.sdk.transforms.windowing.WindowFn.AssignContext-">assignWindows</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="assignWindows-org.joda.time.Instant-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>assignWindows</h4> |
| <pre>public java.util.Collection<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>> assignWindows(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> timestamp)</pre> |
| </li> |
| </ul> |
| <a name="getDefaultWindowMappingFn--"> |
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| <h4>getDefaultWindowMappingFn</h4> |
| <pre>public <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowMappingFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowMappingFn</a><<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>> getDefaultWindowMappingFn()</pre> |
| <div class="block">Return a <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowMappingFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowMappingFn</code></a> that returns the earliest window that contains the end of the |
| main-input window.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#getDefaultWindowMappingFn--">getDefaultWindowMappingFn</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| </dl> |
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| </ul> |
| <a name="isCompatible-org.apache.beam.sdk.transforms.windowing.WindowFn-"> |
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| <h4>isCompatible</h4> |
| <pre>public boolean isCompatible(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><?,?> other)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#isCompatible-org.apache.beam.sdk.transforms.windowing.WindowFn-">WindowFn</a></code></span></div> |
| <div class="block">Returns whether this performs the same merging as the given <code>WindowFn</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#isCompatible-org.apache.beam.sdk.transforms.windowing.WindowFn-">isCompatible</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| </dl> |
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| </ul> |
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| <h4>assignsToOneWindow</h4> |
| <pre>public boolean assignsToOneWindow()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#assignsToOneWindow--">WindowFn</a></code></span></div> |
| <div class="block">Returns true if this <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> always assigns an element to exactly one window. |
| |
| <p>If this varies per-element, or cannot be determined, conservatively return false. |
| |
| <p>By default, returns false.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#assignsToOneWindow--">assignsToOneWindow</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="verifyCompatibility-org.apache.beam.sdk.transforms.windowing.WindowFn-"> |
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| <h4>verifyCompatibility</h4> |
| <pre>public void verifyCompatibility(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><?,?> other) |
| throws <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IncompatibleWindowException.html" title="class in org.apache.beam.sdk.transforms.windowing">IncompatibleWindowException</a></pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#verifyCompatibility-org.apache.beam.sdk.transforms.windowing.WindowFn-">WindowFn</a></code></span></div> |
| <div class="block">Throw <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IncompatibleWindowException.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>IncompatibleWindowException</code></a> if this WindowFn does not perform the same merging as |
| the given $<code>WindowFn</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#verifyCompatibility-org.apache.beam.sdk.transforms.windowing.WindowFn-">verifyCompatibility</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IncompatibleWindowException.html" title="class in org.apache.beam.sdk.transforms.windowing">IncompatibleWindowException</a></code> - if compared WindowFns are not compatible.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-"> |
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| <h4>populateDisplayData</h4> |
| <pre>public void populateDisplayData(<a href="../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.Builder.html" title="interface in org.apache.beam.sdk.transforms.display">DisplayData.Builder</a> builder)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">WindowFn</a></code></span></div> |
| <div class="block">Register display data for the given transform or component. |
| |
| <p><code>populateDisplayData(DisplayData.Builder)</code> is invoked by Pipeline runners to collect |
| display data via <a href="../../../../../../org/apache/beam/sdk/transforms/display/DisplayData.html#from-org.apache.beam.sdk.transforms.display.HasDisplayData-"><code>DisplayData.from(HasDisplayData)</code></a>. Implementations may call <code>super.populateDisplayData(builder)</code> in order to register display data in the current namespace, |
| but should otherwise use <code>subcomponent.populateDisplayData(builder)</code> to use the namespace |
| of the subcomponent. |
| |
| <p>By default, does not register any display data. Implementors may override this method to |
| provide their own display data.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></code> in interface <code><a href="../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display">HasDisplayData</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#populateDisplayData-org.apache.beam.sdk.transforms.display.DisplayData.Builder-">populateDisplayData</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>builder</code> - The builder to populate with display data.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/beam/sdk/transforms/display/HasDisplayData.html" title="interface in org.apache.beam.sdk.transforms.display"><code>HasDisplayData</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPeriod--"> |
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| </a> |
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| <h4>getPeriod</h4> |
| <pre>public <a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> getPeriod()</pre> |
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| <h4>getSize</h4> |
| <pre>public <a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> getSize()</pre> |
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| <h4>getOffset</h4> |
| <pre>public <a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Duration.html?is-external=true" title="class or interface in org.joda.time">Duration</a> getOffset()</pre> |
| </li> |
| </ul> |
| <a name="getOutputTime-org.joda.time.Instant-org.apache.beam.sdk.transforms.windowing.IntervalWindow-"> |
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| <h4>getOutputTime</h4> |
| <pre><a href="../../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#OUTPUT_TIME">OUTPUT_TIME</a>) |
| public <a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> getOutputTime(<a href="http://www.joda.org/joda-time/apidocs/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> inputTimestamp, |
| <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a> window)</pre> |
| <div class="block">Ensures that later sliding windows have an output time that is past the end of earlier windows. |
| |
| <p>If this is the earliest sliding window containing <code>inputTimestamp</code>, that's fine. |
| Otherwise, we pick the earliest time that doesn't overlap with earlier windows.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html#getOutputTime-org.joda.time.Instant-W-">getOutputTime</a></code> in class <code><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing">WindowFn</a><java.lang.Object,<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/IntervalWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">IntervalWindow</a>></code></dd> |
| </dl> |
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| <h4>equals</h4> |
| <pre>public boolean equals(java.lang.Object object)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>equals</code> in class <code>java.lang.Object</code></dd> |
| </dl> |
| </li> |
| </ul> |
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| <li class="blockList"> |
| <h4>hashCode</h4> |
| <pre>public int hashCode()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>hashCode</code> in class <code>java.lang.Object</code></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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