Added: samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/Windows.html URL: http://svn.apache.org/viewvc/samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/Windows.html?rev=1784062&view=auto ============================================================================== --- samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/Windows.html (added) +++ samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/Windows.html Wed Feb 22 21:01:21 2017 @@ -0,0 +1,677 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<!-- NewPage --> +<html lang="en"> +<head> +<!-- Generated by javadoc (1.8.0_74) on Wed Feb 22 13:00:21 PST 2017 --> +<title>Windows (samza-api 0.13.0-SNAPSHOT API)</title> +<meta name="date" content="2017-02-22"> +<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> +<script type="text/javascript" src="../../../../../script.js"></script> +</head> +<body> +<script type="text/javascript"><!-- + try { + if (location.href.indexOf('is-external=true') == -1) { + parent.document.title="Windows (samza-api 0.13.0-SNAPSHOT API)"; 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A window can have one or more associated <a href="../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers"><code>Trigger</code></a>s + that determine when results from the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> are emitted. Each emitted result contains one or more + messages in the window and is called a <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a>. + + <p> A window can have early triggers that allow emitting <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a>s speculatively before all data for the window + has arrived or late triggers that allow handling of late data arrivals. + + window wk1 + +--------------------------------+ + ------------+--------+-----------+ + | | | | + | pane 1 |pane2 | pane3 | + +-----------+--------+-----------+ + + ----------------------------------- +incoming message stream ------+ + ----------------------------------- + window wk2 + +---------------------+---------+ + | pane 1| pane 2 | pane 3 | + | | | | + +---------+-----------+---------+ + + window wk3 + +----------+-----------+---------+ + | | | | + | pane 1 | pane 2 | pane 3| + | | | | + +----------+-----------+---------+ + + + <p> A <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> can be one of the following types: + <ul> + <li> + Tumbling Windows: A tumbling window defines a series of non-overlapping, fixed size, contiguous intervals. + <li> + Session Windows: A session window groups a <a href="../../../../../org/apache/samza/operators/MessageStream.html" title="interface in org.apache.samza.operators"><code>MessageStream</code></a> into sessions. + A <i>session</i> captures some period of activity over a <a href="../../../../../org/apache/samza/operators/MessageStream.html" title="interface in org.apache.samza.operators"><code>MessageStream</code></a>. + The boundary for a session is defined by a <code>sessionGap</code>. All messages that that arrive within + the gap are grouped into the same session. + <li> + Global Windows: A global window defines a single infinite window over the entire <a href="../../../../../org/apache/samza/operators/MessageStream.html" title="interface in org.apache.samza.operators"><code>MessageStream</code></a>. + An early trigger must be specified when defining a global window. + </ul> + + <p> A <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> is defined as "keyed" when the incoming messages are first grouped based on their key + and triggers are fired and window panes are emitted per-key. It is possible to construct "keyed" variants of all the above window + types.</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</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="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>static <M> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,java.util.Collection<M>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#globalWindow--">globalWindow</a></span>()</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into a single global window.</div> +</td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code>static <M,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,WV></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#globalWindow-java.util.function.BiFunction-">globalWindow</a></span>(java.util.function.BiFunction<M,WV,WV> foldFn)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into a single global window.</div> +</td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code>static <M,K> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,java.util.Collection<M>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#keyedGlobalWindow-java.util.function.Function-">keyedGlobalWindow</a></span>(java.util.function.Function<M,K> keyFn)</code> +<div class="block">Returns a global <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages using the provided keyFn.</div> +</td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code>static <M,K,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#keyedGlobalWindow-java.util.function.Function-java.util.function.BiFunction-">keyedGlobalWindow</a></span>(java.util.function.Function<M,K> keyFn, + java.util.function.BiFunction<M,WV,WV> foldFn)</code> +<div class="block">Returns a global <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages using the provided keyFn.</div> +</td> +</tr> +<tr id="i4" class="altColor"> +<td class="colFirst"><code>static <M,K> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,java.util.Collection<M>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#keyedSessionWindow-java.util.function.Function-java.time.Duration-">keyedSessionWindow</a></span>(java.util.function.Function<M,K> keyFn, + java.time.Duration sessionGap)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into sessions per-key based on the provided <code>sessionGap</code>.</div> +</td> +</tr> +<tr id="i5" class="rowColor"> +<td class="colFirst"><code>static <M,K,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#keyedSessionWindow-java.util.function.Function-java.time.Duration-java.util.function.BiFunction-">keyedSessionWindow</a></span>(java.util.function.Function<M,K> keyFn, + java.time.Duration sessionGap, + java.util.function.BiFunction<M,WV,WV> foldFn)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into sessions per-key based on the provided <code>sessionGap</code> + and applies the provided fold function to them.</div> +</td> +</tr> +<tr id="i6" class="altColor"> +<td class="colFirst"><code>static <M,K> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,java.util.Collection<M>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#keyedTumblingWindow-java.util.function.Function-java.time.Duration-">keyedTumblingWindow</a></span>(java.util.function.Function<M,K> keyFn, + java.time.Duration interval)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into fixed-size, non-overlapping + processing time based windows using the provided keyFn.</div> +</td> +</tr> +<tr id="i7" class="rowColor"> +<td class="colFirst"><code>static <M,K,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#keyedTumblingWindow-java.util.function.Function-java.time.Duration-java.util.function.BiFunction-">keyedTumblingWindow</a></span>(java.util.function.Function<M,K> keyFn, + java.time.Duration interval, + java.util.function.BiFunction<M,WV,WV> foldFn)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into fixed-size, non-overlapping processing + time based windows based on the provided keyFn and applies the provided fold function to them.</div> +</td> +</tr> +<tr id="i8" class="altColor"> +<td class="colFirst"><code>static <M> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,java.util.Collection<M>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#tumblingWindow-java.time.Duration-">tumblingWindow</a></span>(java.time.Duration duration)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into fixed-size, non-overlapping + processing time based windows.</div> +</td> +</tr> +<tr id="i9" class="rowColor"> +<td class="colFirst"><code>static <M,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,WV></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/samza/operators/windows/Windows.html#tumblingWindow-java.time.Duration-java.util.function.BiFunction-">tumblingWindow</a></span>(java.time.Duration duration, + java.util.function.BiFunction<M,WV,WV> foldFn)</code> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that windows values into fixed-size processing time based windows and aggregates + them applying the provided function.</div> +</td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>Methods inherited from class java.lang.Object</h3> +<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +<div class="details"> +<ul class="blockList"> +<li class="blockList"> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>Method Detail</h3> +<a name="keyedTumblingWindow-java.util.function.Function-java.time.Duration-java.util.function.BiFunction-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>keyedTumblingWindow</h4> +<pre>public static <M,K,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV> keyedTumblingWindow(java.util.function.Function<M,K> keyFn, + java.time.Duration interval, + java.util.function.BiFunction<M,WV,WV> foldFn)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into fixed-size, non-overlapping processing + time based windows based on the provided keyFn and applies the provided fold function to them. + + <p>The below example computes the maximum value per-key over fixed size 10 second windows. + + <pre> <code> + MessageStream<UserClick> stream = ...; + Function<UserClick, String> keyFn = ...; + BiFunction<UserClick, Integer, Integer> maxAggregator = (m, c)-> Math.max(parseInt(m), c); + MessageStream<WindowPane<String, Integer>> windowedStream = stream.window( + Windows.keyedTumblingWindow(keyFn, Duration.ofSeconds(10), maxAggregator)); + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of the input message</dd> +<dd><code>WV</code> - the type of the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a> output value</dd> +<dd><code>K</code> - the type of the key in the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>keyFn</code> - the function to extract the window key from a message</dd> +<dd><code>interval</code> - the duration in processing time</dd> +<dd><code>foldFn</code> - the function to aggregate messages in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function.</dd> +</dl> +</li> +</ul> +<a name="keyedTumblingWindow-java.util.function.Function-java.time.Duration-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>keyedTumblingWindow</h4> +<pre>public static <M,K> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,java.util.Collection<M>> keyedTumblingWindow(java.util.function.Function<M,K> keyFn, + java.time.Duration interval)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into fixed-size, non-overlapping + processing time based windows using the provided keyFn. + + <p>The below example groups the stream into fixed-size 10 second windows for each key. + + <pre> <code> + MessageStream<UserClick> stream = ...; + Function<UserClick, String> keyFn = ...; + MessageStream<WindowPane<String, Collection<UserClick>>> windowedStream = stream.window( + Windows.keyedTumblingWindow(keyFn, Duration.ofSeconds(10))); + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of the input message</dd> +<dd><code>K</code> - the type of the key in the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>keyFn</code> - function to extract key from the message</dd> +<dd><code>interval</code> - the duration in processing time</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +<a name="tumblingWindow-java.time.Duration-java.util.function.BiFunction-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>tumblingWindow</h4> +<pre>public static <M,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,WV> tumblingWindow(java.time.Duration duration, + java.util.function.BiFunction<M,WV,WV> foldFn)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that windows values into fixed-size processing time based windows and aggregates + them applying the provided function. + + <p>The below example computes the maximum value per-key over fixed size 10 second windows. + + <pre> <code> + MessageStream<String> stream = ...; + BiFunction<String, Integer, Integer> maxAggregator = (m, c)-> Math.max(parseInt(m), c); + MessageStream<WindowPane<Void, Integer>> windowedStream = stream.window( + Windows.tumblingWindow(Duration.ofSeconds(10), maxAggregator)); + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of the input message</dd> +<dd><code>WV</code> - the type of the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a> output value</dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>duration</code> - the duration in processing time</dd> +<dd><code>foldFn</code> - to aggregate messages in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +<a name="tumblingWindow-java.time.Duration-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>tumblingWindow</h4> +<pre>public static <M> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,java.util.Collection<M>> tumblingWindow(java.time.Duration duration)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into fixed-size, non-overlapping + processing time based windows. + + <p>The below example groups the stream into fixed-size 10 second windows and computes a windowed-percentile. + + <pre> <code> + MessageStream<Long> stream = ...; + Function<Collection<Long, Long>> percentile99 = .. + + MessageStream<WindowPane<Void, Collection<Long>>> windowedStream = integerStream.window(Windows.tumblingWindow(Duration.ofSeconds(10))); + MessageStream<Long> windowedPercentiles = windowed.map(windowedOutput -> percentile99(windowedOutput.getMessage()); + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of the input message</dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>duration</code> - the duration in processing time</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +<a name="keyedSessionWindow-java.util.function.Function-java.time.Duration-java.util.function.BiFunction-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>keyedSessionWindow</h4> +<pre>public static <M,K,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV> keyedSessionWindow(java.util.function.Function<M,K> keyFn, + java.time.Duration sessionGap, + java.util.function.BiFunction<M,WV,WV> foldFn)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into sessions per-key based on the provided <code>sessionGap</code> + and applies the provided fold function to them. + + <p>A <i>session</i> captures some period of activity over a <a href="../../../../../org/apache/samza/operators/MessageStream.html" title="interface in org.apache.samza.operators"><code>MessageStream</code></a>. + A session is considered complete when no new messages arrive within the <code>sessionGap</code>. All messages that arrive within + the gap are grouped into the same session. + + <p>The below example computes the maximum value per-key over a session window of gap 10 seconds. + + <pre> <code> + MessageStream<UserClick> stream = ...; + BiFunction<UserClick, Integer, Integer> maxAggregator = (m, c)-> Math.max(parseInt(m), c); + Function<UserClick, String> userIdExtractor = m -> m.getUserId()..; + MessageStream<WindowPane<String, Integer>> windowedStream = stream.window( + Windows.keyedSessionWindow(userIdExtractor, Duration.minute(1), maxAggregator)); + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of the input message</dd> +<dd><code>K</code> - the type of the key in the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a></dd> +<dd><code>WV</code> - the type of the output value in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>keyFn</code> - the function to extract the window key from a message</dd> +<dd><code>sessionGap</code> - the timeout gap for defining the session</dd> +<dd><code>foldFn</code> - the function to aggregate messages in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +<a name="keyedSessionWindow-java.util.function.Function-java.time.Duration-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>keyedSessionWindow</h4> +<pre>public static <M,K> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,java.util.Collection<M>> keyedSessionWindow(java.util.function.Function<M,K> keyFn, + java.time.Duration sessionGap)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into sessions per-key based on the provided <code>sessionGap</code>. + + <p>A <i>session</i> captures some period of activity over a <a href="../../../../../org/apache/samza/operators/MessageStream.html" title="interface in org.apache.samza.operators"><code>MessageStream</code></a>. The + boundary for the session is defined by a <code>sessionGap</code>. All messages that that arrive within + the gap are grouped into the same session. + + <p>The below example groups the stream into per-key session windows of gap 10 seconds. + + <pre> <code> + MessageStream<UserClick> stream = ...; + BiFunction<UserClick, Integer, Integer> maxAggregator = (m, c)-> Math.max(parseIntField(m), c); + Function<UserClick, String> userIdExtractor = m -> m.getUserId()..; + MessageStream<WindowPane<String>, Collection<M>> windowedStream = stream.window( + Windows.keyedSessionWindow(userIdExtractor, Duration.ofSeconds(10))); + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of the input message</dd> +<dd><code>K</code> - the type of the key in the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>keyFn</code> - the function to extract the window key from a message}</dd> +<dd><code>sessionGap</code> - the timeout gap for defining the session</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +<a name="globalWindow-java.util.function.BiFunction-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>globalWindow</h4> +<pre>public static <M,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,WV> globalWindow(java.util.function.BiFunction<M,WV,WV> foldFn)</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into a single global window. This window does not have a + default trigger. The triggering behavior must be specified by setting an early trigger. + + <p>The below example computes the maximum value over a count based window. The window emits <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a>s when + there are either 50 messages in the window pane or when 10 seconds have passed since the first message in the pane. + + <pre> <code> + MessageStream<Long> stream = ...; + BiFunction<Long, Long, Long> maxAggregator = (m, c)-> Math.max(m, c); + MessageStream<WindowPane<Void, Long>> windowedStream = stream.window(Windows.globalWindow(maxAggregator) + .setEarlyTriggers(Triggers.repeat(Triggers.any(Triggers.count(50), Triggers.timeSinceFirstMessage(Duration.ofSeconds(10)))))) + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of message</dd> +<dd><code>WV</code> - type of the output value in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>foldFn</code> - the function to aggregate messages in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function.</dd> +</dl> +</li> +</ul> +<a name="globalWindow--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>globalWindow</h4> +<pre>public static <M> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,java.lang.Void,java.util.Collection<M>> globalWindow()</pre> +<div class="block">Creates a <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages into a single global window. This window does not have a + default trigger. The triggering behavior must be specified by setting an early trigger. + + The below example groups the stream into count based windows that trigger every 50 messages or every 10 minutes. + <pre> <code> + MessageStream<Long> stream = ...; + MessageStream<WindowPane<Void, Collection<Long>> windowedStream = stream.window(Windows.globalWindow() + .setEarlyTrigger(Triggers.repeat(Triggers.any(Triggers.count(50), Triggers.timeSinceFirstMessage(Duration.ofSeconds(10)))))) + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of message</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function.</dd> +</dl> +</li> +</ul> +<a name="keyedGlobalWindow-java.util.function.Function-java.util.function.BiFunction-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>keyedGlobalWindow</h4> +<pre>public static <M,K,WV> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV> keyedGlobalWindow(java.util.function.Function<M,K> keyFn, + java.util.function.BiFunction<M,WV,WV> foldFn)</pre> +<div class="block">Returns a global <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages using the provided keyFn. + The window does not have a default trigger. The triggering behavior must be specified by setting an early + trigger. + + <p> The below example groups the stream into count based windows. The window triggers every 50 messages or every + 10 minutes. + + <pre> <code> + MessageStream<UserClick> stream = ...; + BiFunction<UserClick, Long, Long> maxAggregator = (m, c)-> Math.max(parseLongField(m), c); + Function<UserClick, String> keyFn = ...; + MessageStream<WindowPane<String, Long>> windowedStream = stream.window(Windows.keyedGlobalWindow(keyFn, maxAggregator) + .setEarlyTrigger(Triggers.repeat(Triggers.any(Triggers.count(50), Triggers.timeSinceFirstMessage(Duration.minutes(10)))))) + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of message</dd> +<dd><code>K</code> - type of the key in the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a></dd> +<dd><code>WV</code> - the type of the output value in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>keyFn</code> - the function to extract the window key from a message</dd> +<dd><code>foldFn</code> - the function to aggregate messages in the <a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a></dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +<a name="keyedGlobalWindow-java.util.function.Function-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>keyedGlobalWindow</h4> +<pre>public static <M,K> <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,java.util.Collection<M>> keyedGlobalWindow(java.util.function.Function<M,K> keyFn)</pre> +<div class="block">Returns a global <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> that groups incoming messages using the provided keyFn. + The window does not have a default trigger. The triggering behavior must be specified by setting an early trigger. + + <p> The below example groups the stream per-key into count based windows. The window triggers every 50 messages or + every 10 minutes. + + <pre> <code> + MessageStream<UserClick> stream = ...; + Function<UserClick, String> keyFn = ...; + MessageStream<WindowPane<String, Collection<UserClick>> windowedStream = stream.window(Windows.keyedGlobalWindow(keyFn) + .setEarlyTrigger(Triggers.repeat(Triggers.any(Triggers.count(50), Triggers.timeSinceFirstMessage(Duration.minutes(10)))))) + </code> + </pre></div> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of message</dd> +<dd><code>K</code> - the type of the key in the <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>keyFn</code> - the function to extract the window key from a message</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the created <a href="../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function</dd> +</dl> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li><a href="../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><span class="typeNameLink">Prev Class</span></a></li> +<li>Next Class</li> +</ul> +<ul class="navList"> +<li><a href="../../../../../index.html?org/apache/samza/operators/windows/Windows.html" target="_top">Frames</a></li> +<li><a href="Windows.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_bottom"> +<li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_bottom"); + if(window==top) { + allClassesLink.style.display = "block"; + } + else { + allClassesLink.style.display = "none"; + } + //--> +</script> +</div> +<div> +<ul class="subNavList"> +<li>Summary: </li> +<li>Nested | </li> +<li>Field | </li> +<li>Constr | </li> +<li><a href="#method.summary">Method</a></li> +</ul> +<ul class="subNavList"> +<li>Detail: </li> +<li>Field | </li> +<li>Constr | </li> +<li><a href="#method.detail">Method</a></li> +</ul> +</div> +<a name="skip.navbar.bottom"> +<!-- --> +</a></div> +<!-- ======== END OF BOTTOM NAVBAR ======= --> +</body> +</html>
Added: samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/internal/WindowInternal.html URL: http://svn.apache.org/viewvc/samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/internal/WindowInternal.html?rev=1784062&view=auto ============================================================================== --- samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/internal/WindowInternal.html (added) +++ samza/site/learn/documentation/latest/api/javadocs/org/apache/samza/operators/windows/internal/WindowInternal.html Wed Feb 22 21:01:21 2017 @@ -0,0 +1,441 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<!-- NewPage --> +<html lang="en"> +<head> +<!-- Generated by javadoc (1.8.0_74) on Wed Feb 22 13:00:21 PST 2017 --> +<title>WindowInternal (samza-api 0.13.0-SNAPSHOT API)</title> +<meta name="date" content="2017-02-22"> +<link rel="stylesheet" type="text/css" href="../../../../../../stylesheet.css" title="Style"> +<script type="text/javascript" src="../../../../../../script.js"></script> +</head> +<body> +<script type="text/javascript"><!-- + try { + if (location.href.indexOf('is-external=true') == -1) { + parent.document.title="WindowInternal (samza-api 0.13.0-SNAPSHOT API)"; + } + } + catch(err) { + } +//--> +var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10}; +var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],8:["t4","Concrete Methods"]}; +var altColor = "altColor"; +var rowColor = "rowColor"; +var tableTab = "tableTab"; +var activeTableTab = "activeTableTab"; +</script> +<noscript> +<div>JavaScript is disabled on your browser.</div> +</noscript> +<!-- ========= START OF TOP NAVBAR ======= --> +<div class="topNav"><a name="navbar.top"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.top.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../../index-all.html">Index</a></li> +<li><a href="../../../../../../help-doc.html">Help</a></li> +</ul> +</div> +<div class="subNav"> +<ul class="navList"> +<li>Prev Class</li> +<li>Next Class</li> +</ul> +<ul class="navList"> +<li><a href="../../../../../../index.html?org/apache/samza/operators/windows/internal/WindowInternal.html" target="_top">Frames</a></li> +<li><a href="WindowInternal.html" target="_top">No Frames</a></li> +</ul> +<ul class="navList" id="allclasses_navbar_top"> +<li><a href="../../../../../../allclasses-noframe.html">All Classes</a></li> +</ul> +<div> +<script type="text/javascript"><!-- + allClassesLink = document.getElementById("allclasses_navbar_top"); + if(window==top) { + allClassesLink.style.display = "block"; + } + else { + allClassesLink.style.display = "none"; + } + //--> +</script> +</div> +<div> +<ul class="subNavList"> +<li>Summary: </li> +<li>Nested | </li> +<li>Field | </li> +<li><a href="#constructor.summary">Constr</a> | </li> +<li><a href="#method.summary">Method</a></li> +</ul> +<ul class="subNavList"> +<li>Detail: </li> +<li>Field | </li> +<li><a href="#constructor.detail">Constr</a> | </li> +<li><a href="#method.detail">Method</a></li> +</ul> +</div> +<a name="skip.navbar.top"> +<!-- --> +</a></div> +<!-- ========= END OF TOP NAVBAR ========= --> +<!-- ======== START OF CLASS DATA ======== --> +<div class="header"> +<div class="subTitle">org.apache.samza.operators.windows.internal</div> +<h2 title="Class WindowInternal" class="title">Class WindowInternal<M,K,WV></h2> +</div> +<div class="contentContainer"> +<ul class="inheritance"> +<li>java.lang.Object</li> +<li> +<ul class="inheritance"> +<li>org.apache.samza.operators.windows.internal.WindowInternal<M,K,WV></li> +</ul> +</li> +</ul> +<div class="description"> +<ul class="blockList"> +<li class="blockList"> +<dl> +<dt><span class="paramLabel">Type Parameters:</span></dt> +<dd><code>M</code> - the type of input message</dd> +<dd><code>K</code> - the type of key for the window</dd> +<dd><code>WV</code> - the type of aggregated value in the window output</dd> +</dl> +<dl> +<dt>All Implemented Interfaces:</dt> +<dd><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV></dd> +</dl> +<hr> +<br> +<pre><a href="../../../../../../org/apache/samza/annotation/InterfaceStability.Unstable.html" title="annotation in org.apache.samza.annotation">@InterfaceStability.Unstable</a> +public final class <span class="typeNameLabel">WindowInternal<M,K,WV></span> +extends java.lang.Object +implements <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><M,K,WV></pre> +<div class="block">Internal representation of a <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a>. This specifies default, early and late triggers for the <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> + and whether to accumulate or discard previously emitted panes. + + Note: This class is meant to be used internally by Samza, and is not to be instantiated by programmers.</div> +</li> +</ul> +</div> +<div class="summary"> +<ul class="blockList"> +<li class="blockList"> +<!-- ======== CONSTRUCTOR SUMMARY ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.summary"> +<!-- --> +</a> +<h3>Constructor Summary</h3> +<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> +<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><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#WindowInternal-org.apache.samza.operators.triggers.Trigger-java.util.function.BiFunction-java.util.function.Function-java.util.function.Function-">WindowInternal</a></span>(<a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> defaultTrigger, + java.util.function.BiFunction<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>> foldFunction, + java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>> keyExtractor, + java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,java.lang.Long> eventTimeExtractor)</code> </td> +</tr> +</table> +</li> +</ul> +<!-- ========== METHOD SUMMARY =========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.summary"> +<!-- --> +</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="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><a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#getDefaultTrigger--">getDefaultTrigger</a></span>()</code> </td> +</tr> +<tr id="i1" class="rowColor"> +<td class="colFirst"><code><a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#getEarlyTrigger--">getEarlyTrigger</a></span>()</code> </td> +</tr> +<tr id="i2" class="altColor"> +<td class="colFirst"><code>java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,java.lang.Long></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#getEventTimeExtractor--">getEventTimeExtractor</a></span>()</code> </td> +</tr> +<tr id="i3" class="rowColor"> +<td class="colFirst"><code>java.util.function.BiFunction<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#getFoldFunction--">getFoldFunction</a></span>()</code> </td> +</tr> +<tr id="i4" class="altColor"> +<td class="colFirst"><code>java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#getKeyExtractor--">getKeyExtractor</a></span>()</code> </td> +</tr> +<tr id="i5" class="rowColor"> +<td class="colFirst"><code><a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#getLateTrigger--">getLateTrigger</a></span>()</code> </td> +</tr> +<tr id="i6" class="altColor"> +<td class="colFirst"><code><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#setAccumulationMode-org.apache.samza.operators.windows.AccumulationMode-">setAccumulationMode</a></span>(<a href="../../../../../../org/apache/samza/operators/windows/AccumulationMode.html" title="enum in org.apache.samza.operators.windows">AccumulationMode</a> mode)</code> +<div class="block">Specify how a <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> should process its previously emitted <a href="../../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a>s.</div> +</td> +</tr> +<tr id="i7" class="rowColor"> +<td class="colFirst"><code><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#setEarlyTrigger-org.apache.samza.operators.triggers.Trigger-">setEarlyTrigger</a></span>(<a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> trigger)</code> +<div class="block">Set the early triggers for this <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a>.</div> +</td> +</tr> +<tr id="i8" class="altColor"> +<td class="colFirst"><code><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></td> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html#setLateTrigger-org.apache.samza.operators.triggers.Trigger-">setLateTrigger</a></span>(<a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> trigger)</code> +<div class="block">Set the late triggers for this <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a>.</div> +</td> +</tr> +</table> +<ul class="blockList"> +<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> +<!-- --> +</a> +<h3>Methods inherited from class java.lang.Object</h3> +<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +<div class="details"> +<ul class="blockList"> +<li class="blockList"> +<!-- ========= CONSTRUCTOR DETAIL ======== --> +<ul class="blockList"> +<li class="blockList"><a name="constructor.detail"> +<!-- --> +</a> +<h3>Constructor Detail</h3> +<a name="WindowInternal-org.apache.samza.operators.triggers.Trigger-java.util.function.BiFunction-java.util.function.Function-java.util.function.Function-"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>WindowInternal</h4> +<pre>public WindowInternal(<a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> defaultTrigger, + java.util.function.BiFunction<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>> foldFunction, + java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>> keyExtractor, + java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,java.lang.Long> eventTimeExtractor)</pre> +</li> +</ul> +</li> +</ul> +<!-- ============ METHOD DETAIL ========== --> +<ul class="blockList"> +<li class="blockList"><a name="method.detail"> +<!-- --> +</a> +<h3>Method Detail</h3> +<a name="setEarlyTrigger-org.apache.samza.operators.triggers.Trigger-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>setEarlyTrigger</h4> +<pre>public <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>> setEarlyTrigger(<a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> trigger)</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/samza/operators/windows/Window.html#setEarlyTrigger-org.apache.samza.operators.triggers.Trigger-">Window</a></code></span></div> +<div class="block">Set the early triggers for this <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a>. + <p>Use the <a href="../../../../../../org/apache/samza/operators/triggers/Triggers.html" title="class in org.apache.samza.operators.triggers"><code>Triggers</code></a> APIs to create instances of <a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers"><code>Trigger</code></a></div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../../org/apache/samza/operators/windows/Window.html#setEarlyTrigger-org.apache.samza.operators.triggers.Trigger-">setEarlyTrigger</a></code> in interface <code><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>trigger</code> - the early trigger</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function with the early trigger</dd> +</dl> +</li> +</ul> +<a name="setLateTrigger-org.apache.samza.operators.triggers.Trigger-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>setLateTrigger</h4> +<pre>public <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>> setLateTrigger(<a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> trigger)</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/samza/operators/windows/Window.html#setLateTrigger-org.apache.samza.operators.triggers.Trigger-">Window</a></code></span></div> +<div class="block">Set the late triggers for this <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a>. + <p>Use the <a href="../../../../../../org/apache/samza/operators/triggers/Triggers.html" title="class in org.apache.samza.operators.triggers"><code>Triggers</code></a> APIs to create instances of <a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers"><code>Trigger</code></a></div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../../org/apache/samza/operators/windows/Window.html#setLateTrigger-org.apache.samza.operators.triggers.Trigger-">setLateTrigger</a></code> in interface <code><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>trigger</code> - the late trigger</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function with the late trigger</dd> +</dl> +</li> +</ul> +<a name="setAccumulationMode-org.apache.samza.operators.windows.AccumulationMode-"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>setAccumulationMode</h4> +<pre>public <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>> setAccumulationMode(<a href="../../../../../../org/apache/samza/operators/windows/AccumulationMode.html" title="enum in org.apache.samza.operators.windows">AccumulationMode</a> mode)</pre> +<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/samza/operators/windows/Window.html#setAccumulationMode-org.apache.samza.operators.windows.AccumulationMode-">Window</a></code></span></div> +<div class="block">Specify how a <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> should process its previously emitted <a href="../../../../../../org/apache/samza/operators/windows/WindowPane.html" title="class in org.apache.samza.operators.windows"><code>WindowPane</code></a>s. + + <p> There are two types of <a href="../../../../../../org/apache/samza/operators/windows/AccumulationMode.html" title="enum in org.apache.samza.operators.windows"><code>AccumulationMode</code></a>s: + <ul> + <li> ACCUMULATING: Specifies that window panes should include all messages collected for the window (key) so far, even if they were + included in previously emitted window panes. + <li> DISCARDING: Specifies that window panes should only include messages collected for this window (key) since the last emitted + window pane. + </ul></div> +<dl> +<dt><span class="overrideSpecifyLabel">Specified by:</span></dt> +<dd><code><a href="../../../../../../org/apache/samza/operators/windows/Window.html#setAccumulationMode-org.apache.samza.operators.windows.AccumulationMode-">setAccumulationMode</a></code> in interface <code><a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows">Window</a><<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>></code></dd> +<dt><span class="paramLabel">Parameters:</span></dt> +<dd><code>mode</code> - the accumulation mode</dd> +<dt><span class="returnLabel">Returns:</span></dt> +<dd>the <a href="../../../../../../org/apache/samza/operators/windows/Window.html" title="interface in org.apache.samza.operators.windows"><code>Window</code></a> function with the specified <a href="../../../../../../org/apache/samza/operators/windows/AccumulationMode.html" title="enum in org.apache.samza.operators.windows"><code>AccumulationMode</code></a>.</dd> +</dl> +</li> +</ul> +<a name="getDefaultTrigger--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getDefaultTrigger</h4> +<pre>public <a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> getDefaultTrigger()</pre> +</li> +</ul> +<a name="getEarlyTrigger--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getEarlyTrigger</h4> +<pre>public <a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> getEarlyTrigger()</pre> +</li> +</ul> +<a name="getLateTrigger--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getLateTrigger</h4> +<pre>public <a href="../../../../../../org/apache/samza/operators/triggers/Trigger.html" title="interface in org.apache.samza.operators.triggers">Trigger</a> getLateTrigger()</pre> +</li> +</ul> +<a name="getFoldFunction--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getFoldFunction</h4> +<pre>public java.util.function.BiFunction<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">WV</a>> getFoldFunction()</pre> +</li> +</ul> +<a name="getKeyExtractor--"> +<!-- --> +</a> +<ul class="blockList"> +<li class="blockList"> +<h4>getKeyExtractor</h4> +<pre>public java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">K</a>> getKeyExtractor()</pre> +</li> +</ul> +<a name="getEventTimeExtractor--"> +<!-- --> +</a> +<ul class="blockListLast"> +<li class="blockList"> +<h4>getEventTimeExtractor</h4> +<pre>public java.util.function.Function<<a href="../../../../../../org/apache/samza/operators/windows/internal/WindowInternal.html" title="type parameter in WindowInternal">M</a>,java.lang.Long> getEventTimeExtractor()</pre> +</li> +</ul> +</li> +</ul> +</li> +</ul> +</div> +</div> +<!-- ========= END OF CLASS DATA ========= --> +<!-- ======= START OF BOTTOM NAVBAR ====== --> +<div class="bottomNav"><a name="navbar.bottom"> +<!-- --> +</a> +<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> +<a name="navbar.bottom.firstrow"> +<!-- --> +</a> +<ul class="navList" title="Navigation"> +<li><a href="../../../../../../overview-summary.html">Overview</a></li> +<li><a href="package-summary.html">Package</a></li> +<li class="navBarCell1Rev">Class</li> +<li><a href="package-tree.html">Tree</a></li> +<li><a href="../../../../../../deprecated-list.html">Deprecated</a></li> +<li><a href="../../../../../../index-all.html">Index</a></li> +<li><a 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