Hi all,
in the "Apache xml-security" project, I must perform many operations on
XPath node sets. Many operations are questions in the form:
"Is the Node 'n' in the nodeset selected by the
following XPath expression?".
At the moment, to do this task, I do the following:
NodeList selectedNodes = cachedXPathAPI.selectNodeList(doc,
xpathExpression, nsContext);
java.util.Set set = new java.util.HashSet();
for (int i=0; i<selectedNodes; i++) {
set.add(selectedNodes.item(i);
}
This means I get my selected nodes in a list-like structure and then I have
to copy all nodes to the Set, which costs me much time. After that copy
operation, I can easily ask:
Node particularNode = ...;
boolean contained = selectedNodes.contains(particularNode);
My question to the Xalan XPath gurus out there:
"Is there a way to handle such tasks more efficiently?"
Regards (and thanks in advance),
Christian
