Introducing the IlvXMLChartData Class

The class IlvXMLChartData derives from IlvAbstractChartData and reads one or several data sets from an XML file. The XML file should conform to the following DTD:


<?xml version="1.0" encoding="UTF-8"?> <!ELEMENT chartData (data+)> <!ATTLIST chartData xmlns:ilvchart CDATA #FIXED "http://www.roguewave.com/products/jviews/chart" version CDATA #REQUIRED> <!ELEMENT data (series+)> <!ATTLIST data xSeries IDREF #IMPLIED> <!ELEMENT series ((value \| valuesList), property)> <!ATTLIST series dateFormat CDATA #IMPLIED type (double \| date) #REQUIRED id ID #REQUIRED> <!ELEMENT value (#PCDATA)> <!ELEMENT valuesList (#PCDATA)> <!ATTLIST valuesList delimiter CDATA #IMPLIED> <!ENTITY % propertyExt ""> <!ELEMENT property (#PCDATA %propertyExt;)*> <!ATTLIST property name CDATA #REQUIRED value CDATA #IMPLIED> <!ELEMENT seriesRef EMPTY> <!ATTLIST seriesRef ref IDREF #REQUIRED>

For example, assuming that a chart contains three data sets: two (DS_A and DS_B) which do not use xvalues series, and one (DS_C) which uses a specific series for its abscissa, the resulting XML file is:


<pre> <?xml version="1.0" encoding="UTF-8"?> <chartData version="0.3"> <data> <series id="DS_A" type="double"> <valuesList>0.0,8.0,6.0,13.0,22.0,21.0,19.0,28.0,27.0,23.0</valuesList> </series> <series id="DS_B" type="double"> <valuesList>0.0,9.0,11.0,14.0,11.0,16.0,19.0,21.0,12.0,12.0</valuesList> </series> </data> <data xSeries="X_DS_C"> <series id="X_DS_C" type="double"> <valuesList>0.0,2.0,4.0,6.0,8.0,10.0,12.0,14.0,16.0,18.0</valuesList> </series> <series id="DS_C" type="double"> <valuesList>0.0,0.0,6.0,3.0,0.0,2.0,9.0,18.0,9.0,5.0</valuesList> </series> </data> </chartData> </pre>