| <!DOCTYPE HTML> |
| <html lang="de"> |
| <head> |
| <!-- Generated by javadoc (17) --> |
| <title>CombinerAggregator (Storm 2.6.2 API)</title> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <meta name="description" content="declaration: package: org.apache.storm.streams.operations, interface: CombinerAggregator"> |
| <meta name="generator" content="javadoc/ClassWriterImpl"> |
| <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../script-dir/jquery-ui.min.css" title="Style"> |
| <link rel="stylesheet" type="text/css" href="../../../../../jquery-ui.overrides.css" title="Style"> |
| <script type="text/javascript" src="../../../../../script.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-3.6.1.min.js"></script> |
| <script type="text/javascript" src="../../../../../script-dir/jquery-ui.min.js"></script> |
| </head> |
| <body class="class-declaration-page"> |
| <script type="text/javascript">var evenRowColor = "even-row-color"; |
| var oddRowColor = "odd-row-color"; |
| var tableTab = "table-tab"; |
| var activeTableTab = "active-table-tab"; |
| var pathtoroot = "../../../../../"; |
| loadScripts(document, 'script');</script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <div class="flex-box"> |
| <header role="banner" class="flex-header"> |
| <nav role="navigation"> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="top-nav" id="navbar-top"> |
| <div class="skip-nav"><a href="#skip-navbar-top" title="Skip navigation links">Skip navigation links</a></div> |
| <ul id="navbar-top-firstrow" class="nav-list" title="Navigation"> |
| <li><a href="../../../../../index.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="nav-bar-cell1-rev">Class</li> |
| <li><a href="class-use/CombinerAggregator.html">Use</a></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#class">Help</a></li> |
| </ul> |
| </div> |
| <div class="sub-nav"> |
| <div> |
| <ul class="sub-nav-list"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method-summary">Method</a></li> |
| </ul> |
| <ul class="sub-nav-list"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method-detail">Method</a></li> |
| </ul> |
| </div> |
| <div class="nav-list-search"><label for="search-input">SEARCH:</label> |
| <input type="text" id="search-input" value="search" disabled="disabled"> |
| <input type="reset" id="reset-button" value="reset" disabled="disabled"> |
| </div> |
| </div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <span class="skip-nav" id="skip-navbar-top"></span></nav> |
| </header> |
| <div class="flex-content"> |
| <main role="main"> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.streams.operations</a></div> |
| <h1 title="Interface CombinerAggregator" class="title">Interface CombinerAggregator<T,<wbr>A,<wbr>R></h1> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Superinterfaces:</dt> |
| <dd><code><a href="Operation.html" title="interface in org.apache.storm.streams.operations">Operation</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><code><a href="aggregators/Count.html" title="class in org.apache.storm.streams.operations.aggregators">Count</a></code>, <code><a href="aggregators/LongSum.html" title="class in org.apache.storm.streams.operations.aggregators">LongSum</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">CombinerAggregator<T,<wbr>A,<wbr>R></span><span class="extends-implements"> |
| extends <a href="Operation.html" title="interface in org.apache.storm.streams.operations">Operation</a></span></div> |
| <div class="block">Interface for aggregating values.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
| <div id="method-summary-table"> |
| <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab3" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab3', 3)" class="table-tab">Abstract Methods</button></div> |
| <div id="method-summary-table.tabpanel" role="tabpanel"> |
| <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0"> |
| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#apply(A,T)" class="member-name-link">apply</a><wbr>(<a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accumulator, |
| <a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">T</a> value)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Updates the accumulator by applying the current accumulator with the value.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#init()" class="member-name-link">init</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">The initial value of the accumulator to start with.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#merge(A,A)" class="member-name-link">merge</a><wbr>(<a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accum1, |
| <a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accum2)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Merges two accumulators and returns the merged accumulator.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1"><code>static <T,<wbr> |
| R> <a href="CombinerAggregator.html" title="interface in org.apache.storm.streams.operations">CombinerAggregator</a><T,<wbr>R,<wbr>R></code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1"><code><a href="#of(R,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)" class="member-name-link">of</a><wbr>(R initialValue, |
| <a href="BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super T,<wbr>? extends R> accumulator, |
| <a href="BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super R,<wbr>? extends R> combiner)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1"> |
| <div class="block">A static factory to create a <a href="CombinerAggregator.html" title="interface in org.apache.storm.streams.operations"><code>CombinerAggregator</code></a> based on initial value, accumulator and combiner.</div> |
| </div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">R</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#result(A)" class="member-name-link">result</a><wbr>(<a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accum)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"> |
| <div class="block">Produces a result value out of the accumulator.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="of(R,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)"> |
| <h3 id="of(java.lang.Object,org.apache.storm.streams.operations.BiFunction,org.apache.storm.streams.operations.BiFunction)">of</h3> |
| <div class="member-signature"><span class="modifiers">static</span> <span class="type-parameters"><T,<wbr> |
| R></span> <span class="return-type"><a href="CombinerAggregator.html" title="interface in org.apache.storm.streams.operations">CombinerAggregator</a><T,<wbr>R,<wbr>R></span> <span class="element-name">of</span><wbr><span class="parameters">(R initialValue, |
| <a href="BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super T,<wbr>? extends R> accumulator, |
| <a href="BiFunction.html" title="interface in org.apache.storm.streams.operations">BiFunction</a><? super R,<wbr>? super R,<wbr>? extends R> combiner)</span></div> |
| <div class="block">A static factory to create a <a href="CombinerAggregator.html" title="interface in org.apache.storm.streams.operations"><code>CombinerAggregator</code></a> based on initial value, accumulator and combiner.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>initialValue</code> - the initial value of the result to start with</dd> |
| <dd><code>accumulator</code> - a function that accumulates values into a partial result</dd> |
| <dd><code>combiner</code> - a function that combines partially accumulated results</dd> |
| <dt>Returns:</dt> |
| <dd>the <a href="CombinerAggregator.html" title="interface in org.apache.storm.streams.operations"><code>CombinerAggregator</code></a></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="init()"> |
| <h3>init</h3> |
| <div class="member-signature"><span class="return-type"><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a></span> <span class="element-name">init</span>()</div> |
| <div class="block">The initial value of the accumulator to start with.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>the initial value of the accumulator</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="apply(A,T)"> |
| <h3 id="apply(java.lang.Object,java.lang.Object)">apply</h3> |
| <div class="member-signature"><span class="return-type"><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a></span> <span class="element-name">apply</span><wbr><span class="parameters">(<a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accumulator, |
| <a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">T</a> value)</span></div> |
| <div class="block">Updates the accumulator by applying the current accumulator with the value.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>accumulator</code> - the current accumulator</dd> |
| <dd><code>value</code> - the value</dd> |
| <dt>Returns:</dt> |
| <dd>the updated accumulator</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="merge(A,A)"> |
| <h3 id="merge(java.lang.Object,java.lang.Object)">merge</h3> |
| <div class="member-signature"><span class="return-type"><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a></span> <span class="element-name">merge</span><wbr><span class="parameters">(<a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accum1, |
| <a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accum2)</span></div> |
| <div class="block">Merges two accumulators and returns the merged accumulator.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>accum1</code> - the first accumulator</dd> |
| <dd><code>accum2</code> - the second accumulator</dd> |
| <dt>Returns:</dt> |
| <dd>the merged accumulator</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="result(A)"> |
| <h3 id="result(java.lang.Object)">result</h3> |
| <div class="member-signature"><span class="return-type"><a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">R</a></span> <span class="element-name">result</span><wbr><span class="parameters">(<a href="CombinerAggregator.html" title="type parameter in CombinerAggregator">A</a> accum)</span></div> |
| <div class="block">Produces a result value out of the accumulator.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>accum</code> - the accumulator</dd> |
| <dt>Returns:</dt> |
| <dd>the result</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <!-- ========= END OF CLASS DATA ========= --> |
| </main> |
| <footer role="contentinfo"> |
| <hr> |
| <p class="legal-copy"><small>Copyright © 2023 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </footer> |
| </div> |
| </div> |
| </body> |
| </html> |
