/**
* Given a context node and the argument to the XPath <code>id</code> function, checks whether the
* context node is in the set of nodes that results from that reference to the <code>id</code>
* function. This is used in the implementation of <code>id</code> patterns.
*
* @param node The context node
* @param value The argument to the <code>id</code> function
* @return <code>1</code> if the context node is in the set of nodes returned by the reference to
* the <code>id</code> function; <code>0</code>, otherwise
*/
public int containsID(int node, Object value) {
final String string = (String) value;
int rootHandle = _dom.getAxisIterator(Axis.ROOT).setStartNode(node).next();
// Get the mapping table for the document containing the context node
Hashtable index = (Hashtable) _rootToIndexMap.get(new Integer(rootHandle));
// Split argument to id function into XML whitespace separated tokens
final StringTokenizer values = new StringTokenizer(string, " \n\t");
while (values.hasMoreElements()) {
final String token = (String) values.nextElement();
IntegerArray nodes = null;
if (index != null) {
nodes = (IntegerArray) index.get(token);
}
// If input was from W3C DOM, use DOM's getElementById to do
// the look-up.
if (nodes == null && _enhancedDOM != null && _enhancedDOM.hasDOMSource()) {
nodes = getDOMNodeById(token);
}
// Did we find the context node in the set of nodes?
if (nodes != null && nodes.indexOf(node) >= 0) {
return 1;
}
}
// Didn't find the context node in the set of nodes returned by id
return 0;
}
/**
* Callers should not call next() after it returns END.
*
* <p><em>Use of an instance of this class as a {@link DTMAxisIterator} is <b>deprecated.</b></em>
*
* @deprecated
*/
public int next() {
if (_nodes == null) return DTMAxisIterator.END;
return (_position < _nodes.cardinality())
? _dom.getNodeHandle(_nodes.at(_position++))
: DTMAxisIterator.END;
}
/**
* Given a context node and the second argument to the XSLT <code>key</code> function, checks
* whether the context node is in the set of nodes that results from that reference to the <code>
* key</code> function. This is used in the implementation of key patterns.
*
* <p>This particular {@link KeyIndex} object is the result evaluating the first argument to the
* <code>key</code> function, so it's not taken into any further account.
*
* @param node The context node
* @param value The second argument to the <code>key</code> function
* @return <code>1</code> if and only if the context node is in the set of nodes returned by the
* reference to the <code>key</code> function; <code>0</code>, otherwise
*/
public int containsKey(int node, Object value) {
int rootHandle = _dom.getAxisIterator(Axis.ROOT).setStartNode(node).next();
// Get the mapping table for the document containing the context node
Hashtable index = (Hashtable) _rootToIndexMap.get(new Integer(rootHandle));
// Check whether the context node is present in the set of nodes
// returned by the key function
if (index != null) {
final IntegerArray nodes = (IntegerArray) index.get(value);
return (nodes != null && nodes.indexOf(node) >= 0) ? 1 : 0;
}
// The particular key name identifies no nodes in this document
return 0;
}
