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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.qpid.protonj2.codec.decoders.primitives</a></div>
<h1 title="Interface MapTypeDecoder" class="title">Interface MapTypeDecoder</h1>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Superinterfaces:</dt>
<dd><code><a href="../PrimitiveTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec.decoders">PrimitiveTypeDecoder</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</code>, <code><a href="../../StreamTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec">StreamTypeDecoder</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</code>, <code><a href="../../TypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec">TypeDecoder</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</code></dd>
</dl>
<dl class="notes">
<dt>All Known Implementing Classes:</dt>
<dd><code><a href="AbstractMapTypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders.primitives">AbstractMapTypeDecoder</a></code>, <code><a href="Map32TypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders.primitives">Map32TypeDecoder</a></code>, <code><a href="Map8TypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders.primitives">Map8TypeDecoder</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public interface </span><span class="element-name type-name-label">MapTypeDecoder</span><span class="extends-implements">
extends <a href="../PrimitiveTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec.decoders">PrimitiveTypeDecoder</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</span></div>
<div class="block">Base interface for all AMQP Map type value decoders.</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-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><button id="method-summary-table-tab5" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab5', 3)" class="table-tab">Default 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-tab5"><code>default <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5"><code><a href="#getTypeClass()" class="member-name-link">getTypeClass</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab5">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#readCount(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)" class="member-name-link">readCount</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html" title="class or interface in java.io" class="external-link">InputStream</a>&nbsp;stream,
<a href="../../StreamDecoderState.html" title="interface in org.apache.qpid.protonj2.codec">StreamDecoderState</a>&nbsp;state)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Reads the count of entries in the encoded Map.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#readCount(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)" class="member-name-link">readCount</a><wbr>(<a href="../../../buffer/ProtonBuffer.html" title="interface in org.apache.qpid.protonj2.buffer">ProtonBuffer</a>&nbsp;buffer,
<a href="../../DecoderState.html" title="interface in org.apache.qpid.protonj2.codec">DecoderState</a>&nbsp;state)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Reads the count of entries in the encoded Map.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>&lt;KeyType&gt;&nbsp;void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#scanKeys(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState,org.apache.qpid.protonj2.codec.decoders.StreamScanningContext,java.util.function.BiConsumer)" class="member-name-link">scanKeys</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html" title="class or interface in java.io" class="external-link">InputStream</a>&nbsp;stream,
<a href="../../StreamDecoderState.html" title="interface in org.apache.qpid.protonj2.codec">StreamDecoderState</a>&nbsp;state,
<a href="../StreamScanningContext.html" title="interface in org.apache.qpid.protonj2.codec.decoders">StreamScanningContext</a>&lt;KeyType&gt;&nbsp;context,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BiConsumer.html" title="class or interface in java.util.function" class="external-link">BiConsumer</a>&lt;KeyType,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>&gt;&nbsp;matchConsumer)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Scan the encoded <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> keys matching on predetermined key value encodings to quickly
find mappings that are of interest and then only decoding the value portion of the matched
key / value pair.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code>&lt;KeyType&gt;&nbsp;void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3"><code><a href="#scanKeys(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState,org.apache.qpid.protonj2.codec.decoders.ScanningContext,java.util.function.BiConsumer)" class="member-name-link">scanKeys</a><wbr>(<a href="../../../buffer/ProtonBuffer.html" title="interface in org.apache.qpid.protonj2.buffer">ProtonBuffer</a>&nbsp;buffer,
<a href="../../DecoderState.html" title="interface in org.apache.qpid.protonj2.codec">DecoderState</a>&nbsp;state,
<a href="../ScanningContext.html" title="interface in org.apache.qpid.protonj2.codec.decoders">ScanningContext</a>&lt;KeyType&gt;&nbsp;context,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BiConsumer.html" title="class or interface in java.util.function" class="external-link">BiConsumer</a>&lt;KeyType,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>&gt;&nbsp;matchConsumer)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab3">
<div class="block">Scan the encoded <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> keys matching on predetermined key value encodings to quickly
find mappings that are of interest and then only decoding the value portion of the matched
key / value pair.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.qpid.protonj2.codec.decoders.PrimitiveTypeDecoder">Methods inherited from interface&nbsp;org.apache.qpid.protonj2.codec.decoders.<a href="../PrimitiveTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec.decoders">PrimitiveTypeDecoder</a></h3>
<code><a href="../PrimitiveTypeDecoder.html#getTypeCode()">getTypeCode</a>, <a href="../PrimitiveTypeDecoder.html#isJavaPrimitive()">isJavaPrimitive</a>, <a href="../PrimitiveTypeDecoder.html#isPrimitive()">isPrimitive</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.qpid.protonj2.codec.StreamTypeDecoder">Methods inherited from interface&nbsp;org.apache.qpid.protonj2.codec.<a href="../../StreamTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec">StreamTypeDecoder</a></h3>
<code><a href="../../StreamTypeDecoder.html#isArrayType()">isArrayType</a>, <a href="../../StreamTypeDecoder.html#isNull()">isNull</a>, <a href="../../StreamTypeDecoder.html#readArrayElements(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState,int)">readArrayElements</a>, <a href="../../StreamTypeDecoder.html#readSize(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">readSize</a>, <a href="../../StreamTypeDecoder.html#readValue(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">readValue</a>, <a href="../../StreamTypeDecoder.html#skipValue(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">skipValue</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.qpid.protonj2.codec.TypeDecoder">Methods inherited from interface&nbsp;org.apache.qpid.protonj2.codec.<a href="../../TypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec">TypeDecoder</a></h3>
<code><a href="../../TypeDecoder.html#isArrayType()">isArrayType</a>, <a href="../../TypeDecoder.html#isNull()">isNull</a>, <a href="../../TypeDecoder.html#readArrayElements(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState,int)">readArrayElements</a>, <a href="../../TypeDecoder.html#readSize(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">readSize</a>, <a href="../../TypeDecoder.html#readValue(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">readValue</a>, <a href="../../TypeDecoder.html#skipValue(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">skipValue</a></code></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="getTypeClass()">
<h3>getTypeClass</h3>
<div class="member-signature"><span class="modifiers">default</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html" title="class or interface in java.lang" class="external-link">Class</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</span>&nbsp;<span class="element-name">getTypeClass</span>()</div>
<dl class="notes">
<dt>Specified by:</dt>
<dd><code><a href="../../StreamTypeDecoder.html#getTypeClass()">getTypeClass</a></code>&nbsp;in interface&nbsp;<code><a href="../../StreamTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec">StreamTypeDecoder</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</code></dd>
<dt>Specified by:</dt>
<dd><code><a href="../../TypeDecoder.html#getTypeClass()">getTypeClass</a></code>&nbsp;in interface&nbsp;<code><a href="../../TypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec">TypeDecoder</a>&lt;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link">Map</a>&gt;</code></dd>
<dt>Returns:</dt>
<dd>the Class that this decoder handles.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="readCount(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">
<h3>readCount</h3>
<div class="member-signature"><span class="return-type">int</span>&nbsp;<span class="element-name">readCount</span><wbr><span class="parameters">(<a href="../../../buffer/ProtonBuffer.html" title="interface in org.apache.qpid.protonj2.buffer">ProtonBuffer</a>&nbsp;buffer,
<a href="../../DecoderState.html" title="interface in org.apache.qpid.protonj2.codec">DecoderState</a>&nbsp;state)</span>
throws <span class="exceptions"><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></span></div>
<div class="block">Reads the count of entries in the encoded Map.
<p>
This value is the total count of all key values pairs, and should
always be an even number as Map types cannot be unbalanced.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>buffer</code> - The buffer containing the encoded Map type.</dd>
<dd><code>state</code> - The <a href="../../DecoderState.html" title="interface in org.apache.qpid.protonj2.codec"><code>DecoderState</code></a> used during this decode.</dd>
<dt>Returns:</dt>
<dd>the number of elements that we encoded from the original Map.</dd>
<dt>Throws:</dt>
<dd><code><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></code> - if an error occurs reading the value</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="readCount(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">
<h3>readCount</h3>
<div class="member-signature"><span class="return-type">int</span>&nbsp;<span class="element-name">readCount</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html" title="class or interface in java.io" class="external-link">InputStream</a>&nbsp;stream,
<a href="../../StreamDecoderState.html" title="interface in org.apache.qpid.protonj2.codec">StreamDecoderState</a>&nbsp;state)</span>
throws <span class="exceptions"><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></span></div>
<div class="block">Reads the count of entries in the encoded Map.
<p>
This value is the total count of all key values pairs, and should
always be an even number as Map types cannot be unbalanced.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>stream</code> - The InputStream containing the encoded Map type.</dd>
<dd><code>state</code> - The <a href="../../StreamDecoderState.html" title="interface in org.apache.qpid.protonj2.codec"><code>StreamDecoderState</code></a> used during this decode.</dd>
<dt>Returns:</dt>
<dd>the number of elements that we encoded from the original Map.</dd>
<dt>Throws:</dt>
<dd><code><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></code> - if an error occurs reading the value</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="scanKeys(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState,org.apache.qpid.protonj2.codec.decoders.ScanningContext,java.util.function.BiConsumer)">
<h3>scanKeys</h3>
<div class="member-signature"><span class="type-parameters">&lt;KeyType&gt;</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">scanKeys</span><wbr><span class="parameters">(<a href="../../../buffer/ProtonBuffer.html" title="interface in org.apache.qpid.protonj2.buffer">ProtonBuffer</a>&nbsp;buffer,
<a href="../../DecoderState.html" title="interface in org.apache.qpid.protonj2.codec">DecoderState</a>&nbsp;state,
<a href="../ScanningContext.html" title="interface in org.apache.qpid.protonj2.codec.decoders">ScanningContext</a>&lt;KeyType&gt;&nbsp;context,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BiConsumer.html" title="class or interface in java.util.function" class="external-link">BiConsumer</a>&lt;KeyType,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>&gt;&nbsp;matchConsumer)</span>
throws <span class="exceptions"><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></span></div>
<div class="block">Scan the encoded <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> keys matching on predetermined key value encodings to quickly
find mappings that are of interest and then only decoding the value portion of the matched
key / value pair. This allows for quick checks of incoming <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> types without the
performance penalty of a full decode. After the method returns the contexts of the encoded
Map in the provided buffer will have been consumed and the next type can be decoded.
<p>
Each matching key / value mapping triggers a call to the provided <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BiConsumer.html" title="class or interface in java.util.function" class="external-link"><code>BiConsumer</code></a> with
the key that triggered the match (generally a cached non-decoded value) and the decoded
value mapped to that key. The caller should use the consumer to trigger actions based on
the matches found in the mappings which avoid full decodings of large maps when only a
limited set of values is desired.</div>
<dl class="notes">
<dt>Type Parameters:</dt>
<dd><code>KeyType</code> - The key type is used when calling the match consumer</dd>
<dt>Parameters:</dt>
<dd><code>buffer</code> - The buffer containing the encoded Map type.</dd>
<dd><code>state</code> - The <a href="../../DecoderState.html" title="interface in org.apache.qpid.protonj2.codec"><code>DecoderState</code></a> used during this decode.</dd>
<dd><code>context</code> - The previously created and configured <a href="../ScanningContext.html" title="interface in org.apache.qpid.protonj2.codec.decoders"><code>ScanningContext</code></a></dd>
<dd><code>matchConsumer</code> - The consumer that will be notified when a matching key is found.</dd>
<dt>Throws:</dt>
<dd><code><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></code> - if an error occurs reading the value</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="scanKeys(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState,org.apache.qpid.protonj2.codec.decoders.StreamScanningContext,java.util.function.BiConsumer)">
<h3>scanKeys</h3>
<div class="member-signature"><span class="type-parameters">&lt;KeyType&gt;</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">scanKeys</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/InputStream.html" title="class or interface in java.io" class="external-link">InputStream</a>&nbsp;stream,
<a href="../../StreamDecoderState.html" title="interface in org.apache.qpid.protonj2.codec">StreamDecoderState</a>&nbsp;state,
<a href="../StreamScanningContext.html" title="interface in org.apache.qpid.protonj2.codec.decoders">StreamScanningContext</a>&lt;KeyType&gt;&nbsp;context,
<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BiConsumer.html" title="class or interface in java.util.function" class="external-link">BiConsumer</a>&lt;KeyType,<wbr><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a>&gt;&nbsp;matchConsumer)</span>
throws <span class="exceptions"><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></span></div>
<div class="block">Scan the encoded <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> keys matching on predetermined key value encodings to quickly
find mappings that are of interest and then only decoding the value portion of the matched
key / value pair. This allows for quick checks of incoming <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Map.html" title="class or interface in java.util" class="external-link"><code>Map</code></a> types without the
performance penalty of a full decode. After the method returns the contexts of the encoded
Map in the provided stream will have been consumed and the next type can be decoded.
<p>
Each matching key / value mapping triggers a call to the provided <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/function/BiConsumer.html" title="class or interface in java.util.function" class="external-link"><code>BiConsumer</code></a> with
the key that triggered the match (generally a cached non-decoded value) and the decoded
value mapped to that key. The caller should use the consumer to trigger actions based on
the matches found in the mappings which avoid full decodings of large maps when only a
limited set of values is desired.</div>
<dl class="notes">
<dt>Type Parameters:</dt>
<dd><code>KeyType</code> - The key type is used when calling the match consumer</dd>
<dt>Parameters:</dt>
<dd><code>stream</code> - The InputStream containing the encoded Map type.</dd>
<dd><code>state</code> - The <a href="../../StreamDecoderState.html" title="interface in org.apache.qpid.protonj2.codec"><code>StreamDecoderState</code></a> used during this decode.</dd>
<dd><code>context</code> - The previously created and configured <a href="../ScanningContext.html" title="interface in org.apache.qpid.protonj2.codec.decoders"><code>ScanningContext</code></a></dd>
<dd><code>matchConsumer</code> - The consumer that will be notified when a matching key is found.</dd>
<dt>Throws:</dt>
<dd><code><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></code> - if an error occurs reading the value</dd>
</dl>
</section>
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