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XGML is an XML-ish variant of the GML file format where sections and attributes as listed in the various tables of section GML File Format are wrapped in <section> and <attribute> tags, respectively.
Example 9.20, “XGML representation” shows the beginning of a file having "GML-over-XML" encoding.
Example 9.20. XGML representation
<section name="xgml"> <attribute key="Creator" type="String">yFiles</attribute> <attribute key="Version" type="String">2.3.1</attribute> <section name="graph"> <attribute key="hierarchic" type="int">1</attribute> <attribute key="directed" type="int">1</attribute> <section name="node"> <attribute key="id" type="int">0</attribute> <section name="graphics"> <attribute key="x" type="double">200.0</attribute> <attribute key="y" type="double">0.0</attribute> </section> <section name="LabelGraphics"> <attribute key="text" type="String">January</attribute> </section> </section> ... </section>
An XGML file is written using class XGMLIOHandler which is a descendant of GMLIOHandler and is used similarly to its superclass. The code fragment in Example 9.21, “Instantiating an XGMLIOHandler” shows how to instantiate an XGMLIOHandler and use it to write a graph to file.
XGMLIOHandler can be used with the Java 2 Runtime Environment beginning with version 1.4.
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