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Revision as of 09:47, 14 February 2011 Erik Sjölund (Talk | contribs) ← Previous diff		Current revision Erik Sjölund (Talk | contribs)
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	== XDR (eXternal Data Representation) ==		== XDR (eXternal Data Representation) ==
-	[http://en.wikipedia.org/wiki/External_Data_Representation Description on Wikipedia]	+	[http://en.wikipedia.org/wiki/External_Data_Representation Wikipedia entry]
	There is an example of using XDR in		There is an example of using XDR in
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	== Boost serialization library ==		== Boost serialization library ==
		+
		+	The [http://www.boost.org/ Boost C++ libraries] provides a serialization library.
		+
	There is an example of using Boost serialization in		There is an example of using Boost serialization in
	[http://scm.codesynthesis.com/?p=xsd/xsd.git;a=tree;f=examples/cxx/tree/binary/boost;hb=HEAD examples/cxx/tree/binary/boost]		[http://scm.codesynthesis.com/?p=xsd/xsd.git;a=tree;f=examples/cxx/tree/binary/boost;hb=HEAD examples/cxx/tree/binary/boost]
	== QDataStream ==		== QDataStream ==
		+
		+	[http://doc.qt.nokia.com/latest/qdatastream.html QDataStream] is a serialization class from the Qt library. Some [https://svn.sbc.su.se/repos/qdatastream-for-codesynthesis-xsd/trunk/ experimental code] is available that uses QDataStream together with Codesynthesis XSD.
		+
		+	= Comparison of the binary formats =
		+
		+	Serializing a Codesynthesis XSD data object can yield different file sizes for the different binary formats.
		+	The XML Schema datatype int8 takes up 32 bits in the XDR format but only 8 bit in the CDR and the QDataStream format (tested on a Ubuntu Linux 10.10 32-bit computer).

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Current revision

The C++/Tree Mapping User Manual has a section about binary serialization.

Contents 1 Predefined binary formats 1.1 CDR (Common Data Representation) 1.2 XDR (eXternal Data Representation) 2 Custom binary formats 2.1 Boost serialization library 2.2 QDataStream 3 Comparison of the binary formats

Predefined binary formats

CDR (Common Data Representation)

The ADAPTIVE Communication Environment (ACE) provides a binary format. The extraction and insertion classes are described in the doxygen generated documentation.

• ACE_OutputCDR Class Reference
• ACE_InputCDR Class Reference

There is an example of using CDR in examples/cxx/tree/binary/cdr

XDR (eXternal Data Representation)

Wikipedia entry

There is an example of using XDR in examples/cxx/tree/binary/xdr

Custom binary formats

Boost serialization library

The Boost C++ libraries provides a serialization library.

There is an example of using Boost serialization in examples/cxx/tree/binary/boost

QDataStream

QDataStream is a serialization class from the Qt library. Some experimental code is available that uses QDataStream together with Codesynthesis XSD.

Comparison of the binary formats

Serializing a Codesynthesis XSD data object can yield different file sizes for the different binary formats. The XML Schema datatype int8 takes up 32 bits in the XDR format but only 8 bit in the CDR and the QDataStream format (tested on a Ubuntu Linux 10.10 32-bit computer).