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Posted to commits@kafka.apache.org by ij...@apache.org on 2016/05/19 00:02:01 UTC
[11/51] [partial] kafka-site git commit: Update javadoc for 0.10 to
include connect and streams
http://git-wip-us.apache.org/repos/asf/kafka-site/blob/af5a933b/0100/javadoc/org/apache/kafka/streams/kstream/JoinWindows.html
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+<!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 (version 1.7.0_80) on Thu May 19 00:52:04 BST 2016 -->
+<title>JoinWindows (kafka 0.10.0.0 API)</title>
+<meta name="date" content="2016-05-19">
+<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
+</head>
+<body>
+<script type="text/javascript"><!--
+ if (location.href.indexOf('is-external=true') == -1) {
+ parent.document.title="JoinWindows (kafka 0.10.0.0 API)";
+ }
+//-->
+</script>
+<noscript>
+<div>JavaScript is disabled on your browser.</div>
+</noscript>
+<!-- ========= START OF TOP NAVBAR ======= -->
+<div class="topNav"><a name="navbar_top">
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+<ul class="navList">
+<li><a href="../../../../../index.html?org/apache/kafka/streams/kstream/JoinWindows.html" target="_top">Frames</a></li>
+<li><a href="JoinWindows.html" target="_top">No Frames</a></li>
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+<div>
+<ul class="subNavList">
+<li>Summary: </li>
+<li>Nested | </li>
+<li><a href="#field_summary">Field</a> | </li>
+<li>Constr | </li>
+<li><a href="#method_summary">Method</a></li>
+</ul>
+<ul class="subNavList">
+<li>Detail: </li>
+<li><a href="#field_detail">Field</a> | </li>
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+<li><a href="#method_detail">Method</a></li>
+</ul>
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+<!-- ========= END OF TOP NAVBAR ========= -->
+<!-- ======== START OF CLASS DATA ======== -->
+<div class="header">
+<div class="subTitle">org.apache.kafka.streams.kstream</div>
+<h2 title="Class JoinWindows" class="title">Class JoinWindows</h2>
+</div>
+<div class="contentContainer">
+<ul class="inheritance">
+<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
+<li>
+<ul class="inheritance">
+<li><a href="../../../../../org/apache/kafka/streams/kstream/Windows.html" title="class in org.apache.kafka.streams.kstream">org.apache.kafka.streams.kstream.Windows</a><TimeWindow></li>
+<li>
+<ul class="inheritance">
+<li>org.apache.kafka.streams.kstream.JoinWindows</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<hr>
+<br>
+<pre>public class <span class="strong">JoinWindows</span>
+extends <a href="../../../../../org/apache/kafka/streams/kstream/Windows.html" title="class in org.apache.kafka.streams.kstream">Windows</a><TimeWindow></pre>
+<div class="block">The window specifications used for joins.
+ <p>
+ A <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream"><code>JoinWindows</code></a> instance defines a join over two stream on the same key and a maximum time difference.
+ In SQL-style you would express this join as
+ <pre>
+ SELECT * FROM stream1, stream2
+ WHERE
+ stream1.key = stream2.key
+ AND
+ stream2.ts - before <= stream1.ts <= stream2.ts + after
+ </pre>
+ There are three different window configuration supported:
+ <ul>
+ <li>before = after = time-difference</li>
+ <li>before = 0 and after = time-difference</li>
+ <li>before = time-difference and after = 0</li>
+ </ul>
+ A join is symmetric in the sense, that a join specification on the first stream returns the same result record as
+ a join specification on the second stream with flipped before and after values.</div>
+</li>
+</ul>
+</div>
+<div class="summary">
+<ul class="blockList">
+<li class="blockList">
+<!-- =========== FIELD SUMMARY =========== -->
+<ul class="blockList">
+<li class="blockList"><a name="field_summary">
+<!-- -->
+</a>
+<h3>Field Summary</h3>
+<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
+<caption><span>Fields</span><span class="tabEnd"> </span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Field and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>long</code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#after">after</a></strong></code>
+<div class="block">Maximum time difference for tuples that are after the join tuple.</div>
+</td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><code>long</code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#before">before</a></strong></code>
+<div class="block">Maximum time difference for tuples that are before the join tuple.</div>
+</td>
+</tr>
+</table>
+<ul class="blockList">
+<li class="blockList"><a name="fields_inherited_from_class_org.apache.kafka.streams.kstream.Windows">
+<!-- -->
+</a>
+<h3>Fields inherited from class org.apache.kafka.streams.kstream.<a href="../../../../../org/apache/kafka/streams/kstream/Windows.html" title="class in org.apache.kafka.streams.kstream">Windows</a></h3>
+<code><a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#name">name</a>, <a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#segments">segments</a></code></li>
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+<!-- -->
+</a>
+<h3>Method Summary</h3>
+<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
+<caption><span>Methods</span><span class="tabEnd"> </span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a></code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#after(long)">after</a></strong>(long timeDifference)</code>
+<div class="block">Specifies that records of the same key are joinable if their timestamps are within
+ the join window interval, and if the timestamp of a record from the secondary stream
+ is later than or equal to the timestamp of a record from the first stream.</div>
+</td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a></code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#before(long)">before</a></strong>(long timeDifference)</code>
+<div class="block">Specifies that records of the same key are joinable if their timestamps are within
+ the join window interval, and if the timestamp of a record from the secondary stream is
+ earlier than or equal to the timestamp of a record from the first stream.</div>
+</td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>boolean</code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#equals(java.lang.Object)">equals</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> o)</code> </td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><code>int</code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#hashCode()">hashCode</a></strong>()</code> </td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code>static <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a></code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#of(java.lang.String)">of</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</code> </td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>,TimeWindow></code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#windowsFor(long)">windowsFor</a></strong>(long timestamp)</code>
+<div class="block">Not supported by <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream"><code>JoinWindows</code></a>.</div>
+</td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><code><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a></code></td>
+<td class="colLast"><code><strong><a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html#within(long)">within</a></strong>(long timeDifference)</code>
+<div class="block">Specifies that records of the same key are joinable if their timestamps are within <code>timeDifference</code>.</div>
+</td>
+</tr>
+</table>
+<ul class="blockList">
+<li class="blockList"><a name="methods_inherited_from_class_org.apache.kafka.streams.kstream.Windows">
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+</a>
+<h3>Methods inherited from class org.apache.kafka.streams.kstream.<a href="../../../../../org/apache/kafka/streams/kstream/Windows.html" title="class in org.apache.kafka.streams.kstream">Windows</a></h3>
+<code><a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#maintainMs()">maintainMs</a>, <a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#name()">name</a>, <a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#segments(int)">segments</a>, <a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#until(long)">until</a></code></li>
+</ul>
+<ul class="blockList">
+<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object">
+<!-- -->
+</a>
+<h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
+<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.ht
ml?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
+</ul>
+</li>
+</ul>
+</li>
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+</div>
+<div class="details">
+<ul class="blockList">
+<li class="blockList">
+<!-- ============ FIELD DETAIL =========== -->
+<ul class="blockList">
+<li class="blockList"><a name="field_detail">
+<!-- -->
+</a>
+<h3>Field Detail</h3>
+<a name="before">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>before</h4>
+<pre>public final long before</pre>
+<div class="block">Maximum time difference for tuples that are before the join tuple.</div>
+</li>
+</ul>
+<a name="after">
+<!-- -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>after</h4>
+<pre>public final long after</pre>
+<div class="block">Maximum time difference for tuples that are after the join tuple.</div>
+</li>
+</ul>
+</li>
+</ul>
+<!-- ============ METHOD DETAIL ========== -->
+<ul class="blockList">
+<li class="blockList"><a name="method_detail">
+<!-- -->
+</a>
+<h3>Method Detail</h3>
+<a name="of(java.lang.String)">
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+<li class="blockList">
+<h4>of</h4>
+<pre>public static <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a> of(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</pre>
+</li>
+</ul>
+<a name="within(long)">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>within</h4>
+<pre>public <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a> within(long timeDifference)</pre>
+<div class="block">Specifies that records of the same key are joinable if their timestamps are within <code>timeDifference</code>.</div>
+<dl><dt><span class="strong">Parameters:</span></dt><dd><code>timeDifference</code> - join window interval</dd></dl>
+</li>
+</ul>
+<a name="before(long)">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>before</h4>
+<pre>public <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a> before(long timeDifference)</pre>
+<div class="block">Specifies that records of the same key are joinable if their timestamps are within
+ the join window interval, and if the timestamp of a record from the secondary stream is
+ earlier than or equal to the timestamp of a record from the first stream.</div>
+<dl><dt><span class="strong">Parameters:</span></dt><dd><code>timeDifference</code> - join window interval</dd></dl>
+</li>
+</ul>
+<a name="after(long)">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>after</h4>
+<pre>public <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream">JoinWindows</a> after(long timeDifference)</pre>
+<div class="block">Specifies that records of the same key are joinable if their timestamps are within
+ the join window interval, and if the timestamp of a record from the secondary stream
+ is later than or equal to the timestamp of a record from the first stream.</div>
+<dl><dt><span class="strong">Parameters:</span></dt><dd><code>timeDifference</code> - join window interval</dd></dl>
+</li>
+</ul>
+<a name="windowsFor(long)">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>windowsFor</h4>
+<pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>,TimeWindow> windowsFor(long timestamp)</pre>
+<div class="block">Not supported by <a href="../../../../../org/apache/kafka/streams/kstream/JoinWindows.html" title="class in org.apache.kafka.streams.kstream"><code>JoinWindows</code></a>. Throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang"><code>UnsupportedOperationException</code></a>.</div>
+<dl>
+<dt><strong>Specified by:</strong></dt>
+<dd><code><a href="../../../../../org/apache/kafka/streams/kstream/Windows.html#windowsFor(long)">windowsFor</a></code> in class <code><a href="../../../../../org/apache/kafka/streams/kstream/Windows.html" title="class in org.apache.kafka.streams.kstream">Windows</a><TimeWindow></code></dd>
+<dt><span class="strong">Parameters:</span></dt><dd><code>timestamp</code> - the timestamp window should get created for</dd>
+<dt><span class="strong">Returns:</span></dt><dd>a map of <code>windowStartTimestamp -> Window</code> entries</dd></dl>
+</li>
+</ul>
+<a name="equals(java.lang.Object)">
+<!-- -->
+</a>
+<ul class="blockList">
+<li class="blockList">
+<h4>equals</h4>
+<pre>public final boolean equals(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> o)</pre>
+<dl>
+<dt><strong>Overrides:</strong></dt>
+<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a></code> in class <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
+</dl>
+</li>
+</ul>
+<a name="hashCode()">
+<!-- -->
+</a>
+<ul class="blockListLast">
+<li class="blockList">
+<h4>hashCode</h4>
+<pre>public int hashCode()</pre>
+<dl>
+<dt><strong>Overrides:</strong></dt>
+<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a></code> in class <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></dd>
+</dl>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
+<!-- ========= END OF CLASS DATA ========= -->
+<!-- ======= START OF BOTTOM NAVBAR ====== -->
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+<li><a href="../../../../../index.html?org/apache/kafka/streams/kstream/JoinWindows.html" target="_top">Frames</a></li>
+<li><a href="JoinWindows.html" target="_top">No Frames</a></li>
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+<ul class="subNavList">
+<li>Summary: </li>
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+<div class="subTitle">org.apache.kafka.streams.kstream</div>
+<h2 title="Interface KGroupedTable" class="title">Interface KGroupedTable<K,V></h2>
+</div>
+<div class="contentContainer">
+<div class="description">
+<ul class="blockList">
+<li class="blockList">
+<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>K</code> - Type of primary keys</dd><dd><code>V</code> - Type of value changes</dd></dl>
+<hr>
+<br>
+<pre>@InterfaceStability.Unstable
+public interface <span class="strong">KGroupedTable<K,V></span></pre>
+<div class="block"><a href="../../../../../org/apache/kafka/streams/kstream/KGroupedTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KGroupedTable</code></a> is an abstraction of a <i>grouped changelog stream</i> from a primary-keyed table,
+ usually on a different grouping key than the original primary key.
+ <p>
+ It is an intermediate representation after a re-grouping of a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> before an aggregation is applied
+ to the new partitions resulting in a new <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a>.</div>
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+<caption><span>Methods</span><span class="tabEnd"> </span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colLast" scope="col">Method and Description</th>
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+ using default serializers and deserializers.</div>
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+</tr>
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+ <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</pre>
+<div class="block">Combine updating values of this stream by the selected key into a new instance of <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a>.</div>
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+<dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> with the same key and value types as this <a href="../../../../../org/apache/kafka/streams/kstream/KGroupedTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KGroupedTable</code></a>,
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+ <a href="../../../../../org/apache/kafka/streams/kstream/Aggregator.html" title="interface in org.apache.kafka.streams.kstream">Aggregator</a><<a href="../../../../../org/apache/kafka/streams/kstream/KGroupedTable.html" title="type parameter in KGroupedTable">K</a>,<a href="../../../../../org/apache/kafka/streams/kstream/KGroupedTable.html" title="type parameter in KGroupedTable">V</a>,T> adder,
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+ <a href="../../../../../org/apache/kafka/common/serialization/Serde.html" title="interface in org.apache.kafka.common.serialization">Serde</a><T> aggValueSerde,
+ <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> name)</pre>
+<div class="block">Aggregate updating values of this stream by the selected key into a new instance of <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a>.</div>
+<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>T</code> - the value type of the aggregated <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a></dd><dt><span class="strong">Parameters:</span></dt><dd><code>initializer</code> - the instance of <a href="../../../../../org/apache/kafka/streams/kstream/Initializer.html" title="interface in org.apache.kafka.streams.kstream"><code>Initializer</code></a></dd><dd><code>adder</code> - the instance of <a href="../../../../../org/apache/kafka/streams/kstream/Aggregator.html" title="interface in org.apache.kafka.streams.kstream"><code>Aggregator</code></a> for addition</dd><dd><code>substractor</code> - the instance of <a href="../../../../../org/apache/kafka/streams/kstream/Aggregator.html" title="interface in org.apache.kafka.streams.kstream"><code>Aggregator</code></a> for subtraction</dd><dd><code>aggValueSerde</code> - value s
erdes for materializing the aggregated table,
+ if not specified the default serdes defined in the configs will be used</dd><dd><code>name</code> - the name of the resulted table</dd>
+<dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> with same key and aggregated value type <code>T</code>,
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+</li>
+</ul>
+<a name="aggregate(org.apache.kafka.streams.kstream.Initializer, org.apache.kafka.streams.kstream.Aggregator, org.apache.kafka.streams.kstream.Aggregator, java.lang.String)">
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resulted <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a></dd>
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+<div class="block">Count number of records of this stream by the selected key into a new instance of <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a>.</div>
+<dl><dt><span class="strong">Parameters:</span></dt><dd><code>name</code> - the name of the resulted <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a></dd>
+<dt><span class="strong">Returns:</span></dt><dd>a <a href="../../../../../org/apache/kafka/streams/kstream/KTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KTable</code></a> with same key and <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang"><code>Long</code></a> value type as this <a href="../../../../../org/apache/kafka/streams/kstream/KGroupedTable.html" title="interface in org.apache.kafka.streams.kstream"><code>KGroupedTable</code></a>,
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