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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.kafka.streams.kstream</a></div> |
| <h1 title="Interface Merger" class="title">Interface Merger<K,​V></h1> |
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| <section class="description"> |
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| <dt>Type Parameters:</dt> |
| <dd><code>K</code> - key type</dd> |
| <dd><code>V</code> - aggregate value type</dd> |
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| <pre>public interface <span class="type-name-label">Merger<K,​V></span></pre> |
| <div class="block">The interface for merging aggregate values for <a href="SessionWindows.html" title="class in org.apache.kafka.streams.kstream"><code>SessionWindows</code></a> with the given key.</div> |
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| <td class="col-first"><code><a href="Merger.html" title="type parameter in Merger">V</a></code></td> |
| <th class="col-second" scope="row"><code><span class="member-name-link"><a href="#apply(K,V,V)">apply</a></span>​(<a href="Merger.html" title="type parameter in Merger">K</a> aggKey, |
| <a href="Merger.html" title="type parameter in Merger">V</a> aggOne, |
| <a href="Merger.html" title="type parameter in Merger">V</a> aggTwo)</code></th> |
| <td class="col-last"> |
| <div class="block">Compute a new aggregate from the key and two aggregates.</div> |
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| <section class="detail" id="apply(K,V,V)"> |
| <h3 id="apply(java.lang.Object,java.lang.Object,java.lang.Object)">apply</h3> |
| <div class="member-signature"><span class="return-type"><a href="Merger.html" title="type parameter in Merger">V</a></span> <span class="member-name">apply</span>​(<span class="parameters"><a href="Merger.html" title="type parameter in Merger">K</a> aggKey, |
| <a href="Merger.html" title="type parameter in Merger">V</a> aggOne, |
| <a href="Merger.html" title="type parameter in Merger">V</a> aggTwo)</span></div> |
| <div class="block">Compute a new aggregate from the key and two aggregates.</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>aggKey</code> - the key of the record</dd> |
| <dd><code>aggOne</code> - the first aggregate</dd> |
| <dd><code>aggTwo</code> - the second aggregate</dd> |
| <dt>Returns:</dt> |
| <dd>the new aggregate value</dd> |
| </dl> |
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