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Assignment from an ACE_Message_Block.
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="7e8f0a5abbe769290d2562080eb08655"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::byte_order_" ref="7e8f0a5abbe769290d2562080eb08655" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#7e8f0a5abbe769290d2562080eb08655">OpenDDS::DCPS::DataSampleHeader::byte_order_</a> </td>
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0 - Message encoded using little-endian byte order. 1 - Message encoded using network byte order.
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<a class="anchor" name="49cad0e8c8aaf74482edf54033f0493d"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::coherency_group_" ref="49cad0e8c8aaf74482edf54033f0493d" args="" -->
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<td class="memname">ACE_UINT16 <a class="el" href="a00504.html#49cad0e8c8aaf74482edf54033f0493d">OpenDDS::DCPS::DataSampleHeader::coherency_group_</a> </td>
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The COHERENCY_GROUP field is obtained from the Publisher as well, in order to support the same scope as the SEQUENCE field. The special value of 0 indicates that the sample is not participating in a coherency group.
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<a class="anchor" name="8516a002ebc79372489a5570aafa24f2"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::last_sample_" ref="8516a002ebc79372489a5570aafa24f2" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#8516a002ebc79372489a5570aafa24f2">OpenDDS::DCPS::DataSampleHeader::last_sample_</a> </td>
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The flag indicates the last sample of a group of coherent changes.
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<a class="anchor" name="f12f44fb97fc1abf84a50075b23d8b2c"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::marshaled_size_" ref="f12f44fb97fc1abf84a50075b23d8b2c" args="" -->
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<td class="memname">size_t <a class="el" href="a00504.html#f12f44fb97fc1abf84a50075b23d8b2c">OpenDDS::DCPS::DataSampleHeader::marshaled_size_</a><code> [private]</code> </td>
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Keep track of the amount of data read from a buffer.
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<a class="anchor" name="00fc1ce577a5e44dd98096f941fc1363"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::message_id_" ref="00fc1ce577a5e44dd98096f941fc1363" args="" -->
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<td class="memname">char <a class="el" href="a00504.html#00fc1ce577a5e44dd98096f941fc1363">OpenDDS::DCPS::DataSampleHeader::message_id_</a> </td>
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The enum MessageId.
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<a class="anchor" name="d1b5da3f48503d5c5f80160cbd6544e5"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::message_length_" ref="d1b5da3f48503d5c5f80160cbd6544e5" args="" -->
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<td class="memname">ACE_UINT32 <a class="el" href="a00504.html#d1b5da3f48503d5c5f80160cbd6544e5">OpenDDS::DCPS::DataSampleHeader::message_length_</a> </td>
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<a class="anchor" name="88a2739076ae49105fe537070f7a7448"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::publication_id_" ref="88a2739076ae49105fe537070f7a7448" args="" -->
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<td class="memname"><a class="el" href="a00552.html">PublicationId</a> <a class="el" href="a00504.html#88a2739076ae49105fe537070f7a7448">OpenDDS::DCPS::DataSampleHeader::publication_id_</a> </td>
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Identify the DataWriter that produced the sample data being sent.
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<a class="anchor" name="f0c95eaf838d1b25379f53ab4448dc68"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::reserved_1" ref="f0c95eaf838d1b25379f53ab4448dc68" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#f0c95eaf838d1b25379f53ab4448dc68">OpenDDS::DCPS::DataSampleHeader::reserved_1</a> </td>
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reservered bits
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<a class="anchor" name="db60d780633f09720d21ab829871701b"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::reserved_2" ref="db60d780633f09720d21ab829871701b" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#db60d780633f09720d21ab829871701b">OpenDDS::DCPS::DataSampleHeader::reserved_2</a> </td>
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<a class="anchor" name="ed33bddf276e5172a20e976d124ee3f2"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::reserved_3" ref="ed33bddf276e5172a20e976d124ee3f2" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#ed33bddf276e5172a20e976d124ee3f2">OpenDDS::DCPS::DataSampleHeader::reserved_3</a> </td>
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<a class="anchor" name="9e3a0c2beccf0654d07a5eb6ba170255"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::reserved_4" ref="9e3a0c2beccf0654d07a5eb6ba170255" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#9e3a0c2beccf0654d07a5eb6ba170255">OpenDDS::DCPS::DataSampleHeader::reserved_4</a> </td>
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<a class="anchor" name="ad1404a8e022d2b59d21ab19e26f1243"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::reserved_5" ref="ad1404a8e022d2b59d21ab19e26f1243" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#ad1404a8e022d2b59d21ab19e26f1243">OpenDDS::DCPS::DataSampleHeader::reserved_5</a> </td>
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<a class="anchor" name="3cc045708ba8b7f60693a10053d89601"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::reserved_6" ref="3cc045708ba8b7f60693a10053d89601" args="" -->
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<td class="memname">bool <a class="el" href="a00504.html#3cc045708ba8b7f60693a10053d89601">OpenDDS::DCPS::DataSampleHeader::reserved_6</a> </td>
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<a class="anchor" name="2920e86047ba6323ea57abbff284d1af"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::sequence_" ref="2920e86047ba6323ea57abbff284d1af" args="" -->
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<td class="memname">ACE_INT16 <a class="el" href="a00504.html#2920e86047ba6323ea57abbff284d1af">OpenDDS::DCPS::DataSampleHeader::sequence_</a> </td>
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The sequence number is obtained from the Publisher associated with the DataWriter based on the PRESENTATION requirement for the sequence value (access_scope == GROUP).
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<a class="anchor" name="8af3428e86bff5e5a0f19097afbc7549"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::source_timestamp_nanosec_" ref="8af3428e86bff5e5a0f19097afbc7549" args="" -->
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<td class="memname">ACE_UINT32 <a class="el" href="a00504.html#8af3428e86bff5e5a0f19097afbc7549">OpenDDS::DCPS::DataSampleHeader::source_timestamp_nanosec_</a> </td>
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<a class="anchor" name="80f3cc050909dce7fc74abe53ca0ba6b"></a><!-- doxytag: member="OpenDDS::DCPS::DataSampleHeader::source_timestamp_sec_" ref="80f3cc050909dce7fc74abe53ca0ba6b" args="" -->
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<td class="memname">ACE_INT32 <a class="el" href="a00504.html#80f3cc050909dce7fc74abe53ca0ba6b">OpenDDS::DCPS::DataSampleHeader::source_timestamp_sec_</a> </td>
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The SOURCE_TIMESTAMP field is generated from the DataWriter or supplied by the application at the time of the write. This value is derived from the local hosts system clock, which is assumed to be synchronized with the clocks on other hosts within the domain. This field is required for DESTINATION_ORDER and LIFESPAN policy behaviors of subscriptions. It is also required to be present for all data in the SampleInfo structure supplied along with each data sample.
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<hr>The documentation for this struct was generated from the following files:<ul>
<li><a class="el" href="a00823.html">DataSampleHeader.h</a><li><a class="el" href="a00822.html">DataSampleHeader.cpp</a><li><a class="el" href="a00824.html">DataSampleHeader.inl</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Fri Nov 7 09:37:33 2008 for OpenDDS by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.7 </small></address>
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