@XACMLFunction({"urn:oasis:names:tc:xacml:1.0:function:xpath-node-equal"})
public static AttributeValue nodeEqual(EvaluationContext ctx, Object[] params)
throws IndeterminateException {
checkArguments(params, 2);
AttributeValue exp1 = (AttributeValue) params[0];
AttributeValue exp2 = (AttributeValue) params[1];
checkArgumentType(exp1, Constants.TYPE_STRING);
checkArgumentType(exp2, Constants.TYPE_STRING);
String xpathExp1 = (String) exp1.getValue();
String xpathExp2 = (String) exp2.getValue();
try {
NodeList nList1 = evaluateXPath(ctx, xpathExp1);
NodeList nList2 = evaluateXPath(ctx, xpathExp2);
for (int i = 0; i < nList1.getLength(); i++) {
Node node1 = nList1.item(i);
for (int j = 0; j < nList2.getLength(); j++) {
Node node2 = nList2.item(j);
if (node2.isEqualNode(node1)) {
return TRUE;
}
}
}
return FALSE;
} catch (IndeterminateException intEx) {
throw intEx;
} catch (Exception ex) {
throw new IndeterminateException(
"Error occurs while evaluating function nodeEqual : " + xpathExp1 + ", " + xpathExp2);
}
}
private static boolean isNodeMatch(Node node1, Node node2) {
if (node1.isEqualNode(node2)) {
return true;
} else {
NodeList children = node1.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Node child = children.item(i);
if (isNodeMatch(child, node2)) {
return true;
}
}
}
return false;
}
