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<title>Accumulator (Apache Jena ARQ)</title>
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<div class="sub-title"><span class="module-label-in-type">Module</span>&nbsp;<a href="../../../../../../module-summary.html">org.apache.jena.arq</a></div>
<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.jena.sparql.expr.aggregate</a></div>
<h1 title="Interface Accumulator" class="title">Interface Accumulator</h1>
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<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Known Implementing Classes:</dt>
<dd><code><a href="lib/AccStatStdDevPopulation.html" title="class in org.apache.jena.sparql.expr.aggregate.lib">AccStatStdDevPopulation</a></code>, <code><a href="lib/AccStatStdDevSample.html" title="class in org.apache.jena.sparql.expr.aggregate.lib">AccStatStdDevSample</a></code>, <code><a href="lib/AccStatVarPopulation.html" title="class in org.apache.jena.sparql.expr.aggregate.lib">AccStatVarPopulation</a></code>, <code><a href="lib/AccStatVarSample.html" title="class in org.apache.jena.sparql.expr.aggregate.lib">AccStatVarSample</a></code>, <code><a href="AccumulatorExpr.html" title="class in org.apache.jena.sparql.expr.aggregate">AccumulatorExpr</a></code></dd>
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<div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">Accumulator</span></div>
<div class="block">An Accumulator is the processor for each section of a group, so
there is one Accumulator for each group key.</div>
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<h2>Method Summary</h2>
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<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>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#accumulate(org.apache.jena.sparql.engine.binding.Binding,org.apache.jena.sparql.function.FunctionEnv)" class="member-name-link">accumulate</a><wbr>(<a href="../../engine/binding/Binding.html" title="interface in org.apache.jena.sparql.engine.binding">Binding</a>&nbsp;binding,
<a href="../../function/FunctionEnv.html" title="interface in org.apache.jena.sparql.function">FunctionEnv</a>&nbsp;functionEnv)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="../NodeValue.html" title="class in org.apache.jena.sparql.expr">NodeValue</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#getValue()" class="member-name-link">getValue</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">&nbsp;</div>
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<h2>Method Details</h2>
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<section class="detail" id="accumulate(org.apache.jena.sparql.engine.binding.Binding,org.apache.jena.sparql.function.FunctionEnv)">
<h3>accumulate</h3>
<div class="member-signature"><span class="return-type">void</span>&nbsp;<span class="element-name">accumulate</span><wbr><span class="parameters">(<a href="../../engine/binding/Binding.html" title="interface in org.apache.jena.sparql.engine.binding">Binding</a>&nbsp;binding,
<a href="../../function/FunctionEnv.html" title="interface in org.apache.jena.sparql.function">FunctionEnv</a>&nbsp;functionEnv)</span></div>
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<h3>getValue</h3>
<div class="member-signature"><span class="return-type"><a href="../NodeValue.html" title="class in org.apache.jena.sparql.expr">NodeValue</a></span>&nbsp;<span class="element-name">getValue</span>()</div>
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