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<title>Map8TypeDecoder (Qpid ProtonJ2 Parent 1.0.0-M18 API)</title>
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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="Class Map8TypeDecoder" class="title">Class Map8TypeDecoder</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><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">java.lang.Object</a>
<div class="inheritance"><a href="../AbstractPrimitiveTypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders">org.apache.qpid.protonj2.codec.decoders.AbstractPrimitiveTypeDecoder</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;
<div class="inheritance"><a href="AbstractMapTypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders.primitives">org.apache.qpid.protonj2.codec.decoders.primitives.AbstractMapTypeDecoder</a>
<div class="inheritance">org.apache.qpid.protonj2.codec.decoders.primitives.Map8TypeDecoder</div>
</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Implemented Interfaces:</dt>
<dd><code><a href="MapTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec.decoders.primitives">MapTypeDecoder</a></code>, <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>
<hr>
<div class="type-signature"><span class="modifiers">public final class </span><span class="element-name type-name-label">Map8TypeDecoder</span>
<span class="extends-implements">extends <a href="AbstractMapTypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders.primitives">AbstractMapTypeDecoder</a></span></div>
<div class="block">Decoder of AMQP small Map types from a byte stream</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">Map8TypeDecoder</a>()</code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
</section>
</li>
<!-- ========== 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-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete 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-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getTypeCode()" class="member-name-link">getTypeCode</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><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-tab4">
<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-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><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-tab4">
<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-tab4"><code>int</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#readSize(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)" class="member-name-link">readSize</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-tab4">
<div class="block">Reads the size in bytes of the encoded primitive from the given <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"><code>InputStream</code></a> and
returns it.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>int</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#readSize(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)" class="member-name-link">readSize</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-tab4">
<div class="block">Reads the size in bytes of the encoded AMQP type from the given buffer and returns
it.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.qpid.protonj2.codec.decoders.primitives.AbstractMapTypeDecoder">Methods inherited from class&nbsp;org.apache.qpid.protonj2.codec.decoders.primitives.<a href="AbstractMapTypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders.primitives">AbstractMapTypeDecoder</a></h3>
<code><a href="AbstractMapTypeDecoder.html#readValue(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">readValue</a>, <a href="AbstractMapTypeDecoder.html#readValue(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">readValue</a>, <a href="AbstractMapTypeDecoder.html#scanKeys(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState,org.apache.qpid.protonj2.codec.decoders.StreamScanningContext,java.util.function.BiConsumer)">scanKeys</a>, <a href="AbstractMapTypeDecoder.html#scanKeys(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState,org.apache.qpid.protonj2.codec.decoders.ScanningContext,java.util.function.BiConsumer)">scanKeys</a>, <a href="AbstractMapTypeDecoder.html#skipValue(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">skipValue</a>, <a href="AbstractMapTypeDecoder.html#skipValue(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">skipValue</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.qpid.protonj2.codec.decoders.AbstractPrimitiveTypeDecoder">Methods inherited from class&nbsp;org.apache.qpid.protonj2.codec.decoders.<a href="../AbstractPrimitiveTypeDecoder.html" title="class in org.apache.qpid.protonj2.codec.decoders">AbstractPrimitiveTypeDecoder</a></h3>
<code><a href="../AbstractPrimitiveTypeDecoder.html#isArrayType()">isArrayType</a>, <a href="../AbstractPrimitiveTypeDecoder.html#isJavaPrimitive()">isJavaPrimitive</a>, <a href="../AbstractPrimitiveTypeDecoder.html#isNull()">isNull</a>, <a href="../AbstractPrimitiveTypeDecoder.html#readArrayElements(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState,int)">readArrayElements</a>, <a href="../AbstractPrimitiveTypeDecoder.html#readArrayElements(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState,int)">readArrayElements</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<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></h3>
<code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.qpid.protonj2.codec.decoders.primitives.MapTypeDecoder">Methods inherited from interface&nbsp;org.apache.qpid.protonj2.codec.decoders.primitives.<a href="MapTypeDecoder.html" title="interface in org.apache.qpid.protonj2.codec.decoders.primitives">MapTypeDecoder</a></h3>
<code><a href="MapTypeDecoder.html#getTypeClass()">getTypeClass</a></code></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#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#getTypeClass()">getTypeClass</a>, <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></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></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;()">
<h3>Map8TypeDecoder</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">Map8TypeDecoder</span>()</div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="getTypeCode()">
<h3>getTypeCode</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">getTypeCode</span>()</div>
<dl class="notes">
<dt>Returns:</dt>
<dd>the AMQP Encoding Code that this primitive type decoder can read.</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="readSize(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">
<h3>readSize</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">readSize</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"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="../../TypeDecoder.html#readSize(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">TypeDecoder</a></code></span></div>
<div class="block">Reads the size in bytes of the encoded AMQP type from the given buffer and returns
it. Since this methods advances the read position of the provided buffer the caller
must either reset that based on a previous mark or they must read the primitive payload
manually as the decoder would not be able to read the value as it has no retained
state.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>buffer</code> - the source of encoded data.</dd>
<dd><code>state</code> - the current state of the decoder.</dd>
<dt>Returns:</dt>
<dd>the size in bytes of the encoded primitive value.</dd>
<dt>Throws:</dt>
<dd><code><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></code> - if an error is encountered while reading the encoded size.</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="modifiers">public</span>&nbsp;<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"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="MapTypeDecoder.html#readCount(org.apache.qpid.protonj2.buffer.ProtonBuffer,org.apache.qpid.protonj2.codec.DecoderState)">MapTypeDecoder</a></code></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="readSize(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">
<h3>readSize</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name">readSize</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"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="../../StreamTypeDecoder.html#readSize(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">StreamTypeDecoder</a></code></span></div>
<div class="block">Reads the size in bytes of the encoded primitive from the given <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"><code>InputStream</code></a> and
returns it. Since this methods advances the read position of the provided stream the
caller must either reset that based on a previous mark or they must read the primitive
payload manually as the decoder would not be able to read the value as it has no
retained state.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>stream</code> - the source of encoded data.</dd>
<dd><code>state</code> - the current state of the decoder.</dd>
<dt>Returns:</dt>
<dd>the size in bytes of the encoded primitive value.</dd>
<dt>Throws:</dt>
<dd><code><a href="../../DecodeException.html" title="class in org.apache.qpid.protonj2.codec">DecodeException</a></code> - if an error is encountered while reading the encoded size.</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="modifiers">public</span>&nbsp;<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"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="MapTypeDecoder.html#readCount(java.io.InputStream,org.apache.qpid.protonj2.codec.StreamDecoderState)">MapTypeDecoder</a></code></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>
</ul>
</section>
</li>
</ul>
</section>
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