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Object resolveVariable(QName variableName)
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[1984]XPathVariableResolver example
By gaspoda on 2008/11/03 12:01:17 Rate
public class VariableTest
{
public static void main ( String [ ] args ) {
javax.xml.xpath.XPathFactory factory = javax.xml.xpath.XPathFactory.newInstance ( ) ;
factory.setXPathVariableResolver ( new MyVariableResolver ( ) ) ;
javax.xml.xpath.XPath xpath = factory.newXPath ( ) ;
xpath.setXPathVariableResolver ( new MyVariableResolver ( ) ) ;
Object result = xpath.evaluate ( "/person/ [ @name=$x ] ", document, XPathConstants.NODESET ) ;
}
}
class MyVariableResolver implements XPathVariableResolver
{
public Object resolveVariable ( QName var )
{
if ( var == null )
throw new NullPointerException ( "The variable name cannot be null" ) ;
if ( var.equals ( new QName ( "x" ) ) )
return "John";
else
return null;
}
}
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