/**
* Sort given nodes
*
* @param xctxt The XPath runtime state for the sort.
* @param keys Vector of sort keyx
* @param sourceNodes Iterator of nodes to sort
* @return iterator of sorted nodes
* @throws TransformerException
*/
public DTMIterator sortNodes(XPathContext xctxt, Vector keys, DTMIterator sourceNodes)
throws TransformerException {
NodeSorter sorter = new NodeSorter(xctxt);
sourceNodes.setShouldCacheNodes(true);
sourceNodes.runTo(-1);
xctxt.pushContextNodeList(sourceNodes);
try {
sorter.sort(sourceNodes, keys, xctxt);
sourceNodes.setCurrentPos(0);
} finally {
xctxt.popContextNodeList();
}
return sourceNodes;
}
