Examples of org.exist.dom.NodeSet.selectAncestorDescendant()

org.exist.dom.NodeSet.selectAncestorDescendant()

Check if any descendant nodes are found within this node set for a given set of potential ancestor nodes. If mode is {@link #DESCENDANT}, the returned node set will contain all descendant nodes found in this node set for each ancestor. If mode is {@link #ANCESTOR}, the returned set will contain those ancestor nodes, for which descendants have been found. @param al a node set containing potential parent nodes @param mode selection mode @param includeSelf if true, check if the ancestor node itself is contained inthe set of descendant nodes (descendant-or-self axis) @param contextId used to track context nodes when evaluating predicate expressions. If contextId != {@link Expression#NO_CONTEXT_ID}, the current context will be added to each result of the of the selection.

        if (!set.isEmpty()) {
            if (set.isPersistentSet()) {
                final NodeSet nodeSet = set.toNodeSet();
                switch(axis) {
                    case Constants.DESCENDANT_SELF_AXIS:
                        result = nodeSet.selectAncestorDescendant(contextSequence.toNodeSet(), NodeSet.DESCENDANT,
                            true, contextId, true);
                        break;
                    case Constants.CHILD_AXIS:
                        result = nodeSet.selectParentChild(contextSequence.toNodeSet(), NodeSet.DESCENDANT, contextId);
                        break;

                // determine the set of potential ancestors for which the predicate has to
                // be re-evaluated to filter out wrong matches
                if (selection.isEmpty())
                  {ancestors = selection;}
                else if (contextStep == null || current > 0) {
                    ancestors = selection.selectAncestorDescendant(contextSequence.toNodeSet(), NodeSet.ANCESTOR,
                        true, contextId, true);
                } else {
//                    NodeSelector selector;
                    final long start = System.currentTimeMillis();
//                    selector = new AncestorSelector(selection, contextId, true, false);

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