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<div id="projectname">Qpid Proton C++ API
&#160;<span id="projectnumber">0.32.0</span>
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<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="#related">Related Functions</a> &#124;
<a href="classproton_1_1message__id-members.html">List of all members</a> </div>
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<div class="title">message_id</div> </div>
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<p>An AMQP message ID.
<a href="classproton_1_1message__id.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="message__id_8hpp_source.html">message_id.hpp</a>&gt;</code></p>
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Inheritance diagram for message_id:</div>
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<img src="classproton_1_1message__id.png" usemap="#message_5Fid_map" alt=""/>
<map id="message_5Fid_map" name="message_5Fid_map">
<area href="classproton_1_1scalar__base.html" title="The base class for scalar types." alt="scalar_base" shape="rect" coords="0,56,171,80"/>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:afb6e34ccd03d666d3e5cd4312064c4a3"><td class="memItemLeft" align="right" valign="top"><a id="afb6e34ccd03d666d3e5cd4312064c4a3"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#afb6e34ccd03d666d3e5cd4312064c4a3">message_id</a> ()</td></tr>
<tr class="memdesc:afb6e34ccd03d666d3e5cd4312064c4a3"><td class="mdescLeft">&#160;</td><td class="mdescRight">An empty <a class="el" href="classproton_1_1message__id.html" title="An AMQP message ID.">message_id</a>. <br /></td></tr>
<tr class="separator:afb6e34ccd03d666d3e5cd4312064c4a3"><td class="memSeparator" colspan="2">&#160;</td></tr>
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template&lt;class T &gt; </td></tr>
<tr class="memitem:a37823024300ef4413ca077df9ddcc4d2"><td class="memTemplItemLeft" align="right" valign="top">&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#a37823024300ef4413ca077df9ddcc4d2">message_id</a> (const T &amp;x)</td></tr>
<tr class="memdesc:a37823024300ef4413ca077df9ddcc4d2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Construct from any type that can be assigned. <br /></td></tr>
<tr class="separator:a37823024300ef4413ca077df9ddcc4d2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr><td colspan="2"><div class="groupHeader">Assignment operators</div></td></tr>
<tr><td colspan="2"><div class="groupText"><p>Assign a C++ value, deduce the AMQP <a class="el" href="classproton_1_1scalar__base.html#a89dd77b1757d854f49d49e379f8f9db8" title="AMQP type of data stored in the scalar.">type()</a> </p>
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<a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>operator=</b> (uint64_t x)</td></tr>
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<a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>operator=</b> (const <a class="el" href="classproton_1_1uuid.html">uuid</a> &amp;x)</td></tr>
<tr class="separator:a1c223a57d161ae585fe7d498283f3786"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>operator=</b> (const <a class="el" href="classproton_1_1binary.html">binary</a> &amp;x)</td></tr>
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<a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>operator=</b> (const std::string &amp;x)</td></tr>
<tr class="separator:a782793e9b93fc85f7f7a0e74dc468521"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0e4798868734cc90ea4e9ed3ca870d3d"><td class="memItemLeft" align="right" valign="top"><a id="a0e4798868734cc90ea4e9ed3ca870d3d"></a>
<a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#a0e4798868734cc90ea4e9ed3ca870d3d">operator=</a> (const char *x)</td></tr>
<tr class="memdesc:a0e4798868734cc90ea4e9ed3ca870d3d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Treated as amqp::STRING. <br /></td></tr>
<tr class="separator:a0e4798868734cc90ea4e9ed3ca870d3d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_classproton_1_1scalar__base"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classproton_1_1scalar__base')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="classproton_1_1scalar__base.html">scalar_base</a></td></tr>
<tr class="memitem:a89dd77b1757d854f49d49e379f8f9db8 inherit pub_methods_classproton_1_1scalar__base"><td class="memItemLeft" align="right" valign="top"><a id="a89dd77b1757d854f49d49e379f8f9db8"></a>
<a class="el" href="namespaceproton.html#a83c2656d467d69eb49725c18f5aa13a9">type_id</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classproton_1_1scalar__base.html#a89dd77b1757d854f49d49e379f8f9db8">type</a> () const</td></tr>
<tr class="memdesc:a89dd77b1757d854f49d49e379f8f9db8 inherit pub_methods_classproton_1_1scalar__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">AMQP type of data stored in the scalar. <br /></td></tr>
<tr class="separator:a89dd77b1757d854f49d49e379f8f9db8 inherit pub_methods_classproton_1_1scalar__base"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a644718bb2fb240de962dc3c9a1fdf0dc inherit pub_methods_classproton_1_1scalar__base"><td class="memItemLeft" align="right" valign="top"><a id="a644718bb2fb240de962dc3c9a1fdf0dc"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classproton_1_1scalar__base.html#a644718bb2fb240de962dc3c9a1fdf0dc">empty</a> () const</td></tr>
<tr class="memdesc:a644718bb2fb240de962dc3c9a1fdf0dc inherit pub_methods_classproton_1_1scalar__base"><td class="mdescLeft">&#160;</td><td class="mdescRight">True if there is no value, i.e. <a class="el" href="classproton_1_1scalar__base.html#a89dd77b1757d854f49d49e379f8f9db8" title="AMQP type of data stored in the scalar.">type()</a> == NULL_TYPE. <br /></td></tr>
<tr class="separator:a644718bb2fb240de962dc3c9a1fdf0dc inherit pub_methods_classproton_1_1scalar__base"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="related"></a>
Related Functions</h2></td></tr>
<tr><td class="ititle" colspan="2"><p>(Note that these are not member functions.) </p>
</td></tr>
<tr class="memitem:a8e96d12c2968550ffea0e57fc6ca2c7d"><td class="memItemLeft" align="right" valign="top"><a id="a8e96d12c2968550ffea0e57fc6ca2c7d"></a>
template&lt;&gt; </td></tr>
<tr class="memitem:a8e96d12c2968550ffea0e57fc6ca2c7d"><td class="memTemplItemLeft" align="right" valign="top">uint64_t&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#a8e96d12c2968550ffea0e57fc6ca2c7d">get</a> (const <a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;x)</td></tr>
<tr class="memdesc:a8e96d12c2968550ffea0e57fc6ca2c7d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the uint64_t value or throw <a class="el" href="structproton_1_1conversion__error.html" title="An error converting between AMQP and C++ data.">conversion_error</a>. <br /></td></tr>
<tr class="separator:a8e96d12c2968550ffea0e57fc6ca2c7d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9df1e3d65a418435d46c08f9cb2948de"><td class="memItemLeft" align="right" valign="top"><a id="a9df1e3d65a418435d46c08f9cb2948de"></a>
template&lt;&gt; </td></tr>
<tr class="memitem:a9df1e3d65a418435d46c08f9cb2948de"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classproton_1_1uuid.html">uuid</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#a9df1e3d65a418435d46c08f9cb2948de">get</a> (const <a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;x)</td></tr>
<tr class="memdesc:a9df1e3d65a418435d46c08f9cb2948de"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the <a class="el" href="classproton_1_1uuid.html">uuid</a> value or throw <a class="el" href="structproton_1_1conversion__error.html" title="An error converting between AMQP and C++ data.">conversion_error</a>. <br /></td></tr>
<tr class="separator:a9df1e3d65a418435d46c08f9cb2948de"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aad4dad4f21de91016ac93e6df2f4b897"><td class="memItemLeft" align="right" valign="top"><a id="aad4dad4f21de91016ac93e6df2f4b897"></a>
template&lt;&gt; </td></tr>
<tr class="memitem:aad4dad4f21de91016ac93e6df2f4b897"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="classproton_1_1binary.html">binary</a>&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#aad4dad4f21de91016ac93e6df2f4b897">get</a> (const <a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;x)</td></tr>
<tr class="memdesc:aad4dad4f21de91016ac93e6df2f4b897"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the <a class="el" href="classproton_1_1binary.html">binary</a> value or throw <a class="el" href="structproton_1_1conversion__error.html" title="An error converting between AMQP and C++ data.">conversion_error</a>. <br /></td></tr>
<tr class="separator:aad4dad4f21de91016ac93e6df2f4b897"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad99d2405b26cc9862428f13aac25ddf6"><td class="memItemLeft" align="right" valign="top"><a id="ad99d2405b26cc9862428f13aac25ddf6"></a>
template&lt;&gt; </td></tr>
<tr class="memitem:ad99d2405b26cc9862428f13aac25ddf6"><td class="memTemplItemLeft" align="right" valign="top">std::string&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#ad99d2405b26cc9862428f13aac25ddf6">get</a> (const <a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;x)</td></tr>
<tr class="memdesc:ad99d2405b26cc9862428f13aac25ddf6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get the std::string value or throw <a class="el" href="structproton_1_1conversion__error.html" title="An error converting between AMQP and C++ data.">conversion_error</a>. <br /></td></tr>
<tr class="separator:ad99d2405b26cc9862428f13aac25ddf6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8965a5e1c4122df8aee11e971ceabd07"><td class="memTemplParams" colspan="2">template&lt;class T &gt; </td></tr>
<tr class="memitem:a8965a5e1c4122df8aee11e971ceabd07"><td class="memTemplItemLeft" align="right" valign="top">T&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classproton_1_1message__id.html#a8965a5e1c4122df8aee11e971ceabd07">coerce</a> (const <a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;x)</td></tr>
<tr class="memdesc:a8965a5e1c4122df8aee11e971ceabd07"><td class="mdescLeft">&#160;</td><td class="mdescRight">Coerce the contained value to type T. <a href="classproton_1_1message__id.html#a8965a5e1c4122df8aee11e971ceabd07">More...</a><br /></td></tr>
<tr class="separator:a8965a5e1c4122df8aee11e971ceabd07"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>An AMQP message ID. </p>
<p>It can contain one of the following types:</p>
<ul>
<li>uint64_t</li>
<li>std::string</li>
<li><a class="el" href="classproton_1_1uuid.html" title="A 16-byte universally unique identifier.">proton::uuid</a></li>
<li><a class="el" href="classproton_1_1binary.html" title="Arbitrary binary data.">proton::binary</a> </li>
</ul>
</div><h2 class="groupheader">Friends And Related Function Documentation</h2>
<a id="a8965a5e1c4122df8aee11e971ceabd07"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8965a5e1c4122df8aee11e971ceabd07">&#9670;&nbsp;</a></span>coerce()</h2>
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<td class="memname">T coerce </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classproton_1_1message__id.html">message_id</a> &amp;&#160;</td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
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<span class="mlabels"><span class="mlabel">related</span></span> </td>
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<p>Coerce the contained value to type T. </p>
<p>For example: </p><pre class="fragment"> uint64_t i = coerce&lt;uint64_t&gt;(x)
</pre><p>This will succeed if x contains any numeric value, but may lose precision if it contains a float or double value.</p>
<dl class="exception"><dt>Exceptions</dt><dd>
<table class="exception">
<tr><td class="paramname"><a class="el" href="structproton_1_1conversion__error.html" title="An error converting between AMQP and C++ data.">conversion_error</a></td><td>if the value cannot be converted to T according to <code>std::is_convertible</code> </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>proton/<a class="el" href="message__id_8hpp_source.html">message_id.hpp</a></li>
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