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| <li>Summary: </li> |
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| <div class="subTitle">org.apache.beam.sdk.transforms.windowing</div> |
| <h2 title="Enum TimestampCombiner" class="title">Enum TimestampCombiner</h2> |
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| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li>java.lang.Enum<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a>></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.beam.sdk.transforms.windowing.TimestampCombiner</li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>java.io.Serializable, java.lang.Comparable<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a>></dd> |
| </dl> |
| <hr> |
| <br> |
| <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 enum <span class="typeNameLabel">TimestampCombiner</span> |
| extends java.lang.Enum<<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a>></pre> |
| <div class="block">Policies for combining timestamps that occur within a window. |
| |
| <p>In particular, these govern the timestamp on the output of a grouping transform such as <a href="../../../../../../org/apache/beam/sdk/transforms/GroupByKey.html" title="class in org.apache.beam.sdk.transforms"><code>GroupByKey</code></a> or <a href="../../../../../../org/apache/beam/sdk/transforms/Combine.html" title="class in org.apache.beam.sdk.transforms"><code>Combine</code></a>.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- =========== ENUM CONSTANT SUMMARY =========== --> |
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| <li class="blockList"><a name="enum.constant.summary"> |
| <!-- --> |
| </a> |
| <h3>Enum Constant Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Constant Summary table, listing enum constants, and an explanation"> |
| <caption><span>Enum Constants</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Enum Constant and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#EARLIEST">EARLIEST</a></span></code> |
| <div class="block">The policy of taking at the earliest of a set of timestamps.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#END_OF_WINDOW">END_OF_WINDOW</a></span></code> |
| <div class="block">The policy of using the end of the window, regardless of input timestamps.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#LATEST">LATEST</a></span></code> |
| <div class="block">The policy of taking the latest of a set of timestamps.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <li class="blockList"><a name="method.summary"> |
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| </a> |
| <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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract 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><a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/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/TimestampCombiner.html#assign-org.apache.beam.sdk.transforms.windowing.BoundedWindow-org.joda.time.Instant-">assign</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a> intoWindow, |
| <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> timestamp)</code> |
| <div class="block">Shorthand for <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"><code>merge(org.apache.beam.sdk.transforms.windowing.BoundedWindow, java.lang.Iterable<? extends org.joda.time.Instant>)</code></a> with just one element, to place it into the context of a window.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/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/TimestampCombiner.html#combine-org.joda.time.Instant...-">combine</a></span>(<a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>... timestamps)</code> |
| <div class="block">Varargs variant of <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#combine-java.lang.Iterable-"><code>combine(java.lang.Iterable<? extends org.joda.time.Instant>)</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>abstract <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/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/TimestampCombiner.html#combine-java.lang.Iterable-">combine</a></span>(java.lang.Iterable<? extends <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> timestamps)</code> |
| <div class="block">Combines the given times, which must be from the same window and must have been passed through |
| <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"><code>merge(org.apache.beam.sdk.transforms.windowing.BoundedWindow, java.lang.Iterable<? extends org.joda.time.Instant>)</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#dependsOnlyOnEarliestTimestamp--">dependsOnlyOnEarliestTimestamp</a></span>()</code> |
| <div class="block">Returns <code>true</code> if the result of combination of many output timestamps actually depends |
| only on the earliest.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>abstract boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#dependsOnlyOnWindow--">dependsOnlyOnWindow</a></span>()</code> |
| <div class="block">Returns <code>true</code> if the result does not depend on what outputs were combined but only the |
| window they are in.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/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/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-org.joda.time.Instant...-">merge</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a> intoWindow, |
| <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>... timestamps)</code> |
| <div class="block">Varargs variant of <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"><code>merge(org.apache.beam.sdk.transforms.windowing.BoundedWindow, java.lang.Iterable<? extends org.joda.time.Instant>)</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>abstract <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/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/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-">merge</a></span>(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a> intoWindow, |
| java.lang.Iterable<? extends <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> mergingTimestamps)</code> |
| <div class="block">Merges the given timestamps, which may have originated in separate windows, into the context of |
| the result window.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#valueOf-java.lang.String-">valueOf</a></span>(java.lang.String name)</code> |
| <div class="block">Returns the enum constant of this type with the specified name.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#values--">values</a></span>()</code> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Enum</h3> |
| <code>clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf</code></li> |
| </ul> |
| <ul class="blockList"> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>getClass, notify, notifyAll, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <!-- ============ ENUM CONSTANT DETAIL =========== --> |
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| <h3>Enum Constant Detail</h3> |
| <a name="EARLIEST"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>EARLIEST</h4> |
| <pre>public static final <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a> EARLIEST</pre> |
| <div class="block">The policy of taking at the earliest of a set of timestamps. |
| |
| <p>When used in windowed aggregations, the timestamps of non-late inputs will be combined after |
| they are shifted by the <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> (to allow downstream watermark progress). |
| |
| <p>If data arrives late, it has no effect on the output timestamp.</div> |
| </li> |
| </ul> |
| <a name="LATEST"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>LATEST</h4> |
| <pre>public static final <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a> LATEST</pre> |
| <div class="block">The policy of taking the latest of a set of timestamps. |
| |
| <p>When used in windowed aggregations, the timestamps of non-late inputs will be combined after |
| they are shifted by the <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> (to allow downstream watermark progress). |
| |
| <p>If data arrives late, it has no effect on the output timestamp.</div> |
| </li> |
| </ul> |
| <a name="END_OF_WINDOW"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>END_OF_WINDOW</h4> |
| <pre>public static final <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a> END_OF_WINDOW</pre> |
| <div class="block">The policy of using the end of the window, regardless of input timestamps. |
| |
| <p>When used in windowed aggregations, the timestamps of non-late inputs will be combined after |
| they are shifted by the <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a> (to allow downstream watermark progress). |
| |
| <p>If data arrives late, it has no effect on the output timestamp.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="values--"> |
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| <h4>values</h4> |
| <pre>public static <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a>[] values()</pre> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared. This method may be used to iterate |
| over the constants as follows: |
| <pre> |
| for (TimestampCombiner c : TimestampCombiner.values()) |
| System.out.println(c); |
| </pre></div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an array containing the constants of this enum type, in the order they are declared</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="valueOf-java.lang.String-"> |
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| <h4>valueOf</h4> |
| <pre>public static <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html" title="enum in org.apache.beam.sdk.transforms.windowing">TimestampCombiner</a> valueOf(java.lang.String name)</pre> |
| <div class="block">Returns the enum constant of this type with the specified name. |
| The string must match <i>exactly</i> an identifier used to declare an |
| enum constant in this type. (Extraneous whitespace characters are |
| not permitted.)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - the name of the enum constant to be returned.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the enum constant with the specified name</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code>java.lang.IllegalArgumentException</code> - if this enum type has no constant with the specified name</dd> |
| <dd><code>java.lang.NullPointerException</code> - if the argument is null</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="combine-java.lang.Iterable-"> |
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| </a> |
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| <h4>combine</h4> |
| <pre>public abstract <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> combine(java.lang.Iterable<? extends <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> timestamps)</pre> |
| <div class="block">Combines the given times, which must be from the same window and must have been passed through |
| <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"><code>merge(org.apache.beam.sdk.transforms.windowing.BoundedWindow, java.lang.Iterable<? extends org.joda.time.Instant>)</code></a>. |
| |
| <ul> |
| <li><code>combine</code> must be commutative: <code>combine(a, b).equals(combine(b, a))</code>. |
| <li><code>combine</code> must be associative: <code>combine(a, combine(b, |
| c)).equals(combine(combine(a, b), c))</code>. |
| </ul></div> |
| </li> |
| </ul> |
| <a name="merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"> |
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| </a> |
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| <h4>merge</h4> |
| <pre>public abstract <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> merge(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a> intoWindow, |
| java.lang.Iterable<? extends <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>> mergingTimestamps)</pre> |
| <div class="block">Merges the given timestamps, which may have originated in separate windows, into the context of |
| the result window.</div> |
| </li> |
| </ul> |
| <a name="assign-org.apache.beam.sdk.transforms.windowing.BoundedWindow-org.joda.time.Instant-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>assign</h4> |
| <pre>public final <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> assign(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a> intoWindow, |
| <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> timestamp)</pre> |
| <div class="block">Shorthand for <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"><code>merge(org.apache.beam.sdk.transforms.windowing.BoundedWindow, java.lang.Iterable<? extends org.joda.time.Instant>)</code></a> with just one element, to place it into the context of a window. |
| |
| <p>For example, the <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#END_OF_WINDOW"><code>END_OF_WINDOW</code></a> policy moves the timestamp to the end of the window.</div> |
| </li> |
| </ul> |
| <a name="combine-org.joda.time.Instant...-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>combine</h4> |
| <pre>public final <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> combine(<a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>... timestamps)</pre> |
| <div class="block">Varargs variant of <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#combine-java.lang.Iterable-"><code>combine(java.lang.Iterable<? extends org.joda.time.Instant>)</code></a>.</div> |
| </li> |
| </ul> |
| <a name="merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-org.joda.time.Instant...-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>merge</h4> |
| <pre>public final <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> merge(<a href="../../../../../../org/apache/beam/sdk/transforms/windowing/BoundedWindow.html" title="class in org.apache.beam.sdk.transforms.windowing">BoundedWindow</a> intoWindow, |
| <a href="https://static.javadoc.io/joda-time/joda-time/2.10.1/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a>... timestamps)</pre> |
| <div class="block">Varargs variant of <a href="../../../../../../org/apache/beam/sdk/transforms/windowing/TimestampCombiner.html#merge-org.apache.beam.sdk.transforms.windowing.BoundedWindow-java.lang.Iterable-"><code>merge(org.apache.beam.sdk.transforms.windowing.BoundedWindow, java.lang.Iterable<? extends org.joda.time.Instant>)</code></a>.</div> |
| </li> |
| </ul> |
| <a name="dependsOnlyOnEarliestTimestamp--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>dependsOnlyOnEarliestTimestamp</h4> |
| <pre>public abstract boolean dependsOnlyOnEarliestTimestamp()</pre> |
| <div class="block">Returns <code>true</code> if the result of combination of many output timestamps actually depends |
| only on the earliest. |
| |
| <p>This may allow optimizations when it is very efficient to retrieve the earliest timestamp to |
| be combined.</div> |
| </li> |
| </ul> |
| <a name="dependsOnlyOnWindow--"> |
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| <h4>dependsOnlyOnWindow</h4> |
| <pre>public abstract boolean dependsOnlyOnWindow()</pre> |
| <div class="block">Returns <code>true</code> if the result does not depend on what outputs were combined but only the |
| window they are in. The canonical example is if all timestamps are sure to be the end of the |
| window. |
| |
| <p>This may allow optimizations, since it is typically very efficient to retrieve the window |
| and combining output timestamps is not necessary.</div> |
| </li> |
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