/** * 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; }
/** * This method must be called by the code generated by the id() function prior to returning the * node iterator. The lookup code for key() and id() differ in the way the lookup value can be * whitespace separated list of tokens for the id() function, but a single string for the key() * function. * * @deprecated */ public void lookupId(Object value) { // Clear _nodes array _nodes = null; final StringTokenizer values = new StringTokenizer((String) value, " \n\t"); while (values.hasMoreElements()) { final String token = (String) values.nextElement(); IntegerArray nodes = (IntegerArray) _index.get(token); if (nodes == null && _enhancedDOM != null && _enhancedDOM.hasDOMSource()) { nodes = getDOMNodeById(token); } if (nodes == null) continue; if (_nodes == null) { nodes = (IntegerArray) nodes.clone(); _nodes = nodes; } else { _nodes.merge(nodes); } } }