- /*
- * Copyright 2001-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*
- * $Id: CachedNodeListIterator.java,v 1.2 2004/02/16 22:54:59 minchau Exp $
- */
-
- package com.sun.org.apache.xalan.internal.xsltc.dom;
-
- import com.sun.org.apache.xml.internal.dtm.DTMAxisIterator;
- import com.sun.org.apache.xml.internal.dtm.ref.DTMAxisIteratorBase;
- import com.sun.org.apache.xalan.internal.xsltc.util.IntegerArray;
-
- /**
- * CachedNodeListIterator is used for select expressions in a
- * variable or parameter. This iterator caches all nodes in an
- * IntegerArray. Its cloneIterator() method is overridden to
- * return an object of ClonedNodeListIterator.
- */
- public final class CachedNodeListIterator extends DTMAxisIteratorBase {
-
- /**
- * Source for this iterator.
- */
- private DTMAxisIterator _source;
- private IntegerArray _nodes = new IntegerArray();
- private int _numCachedNodes = 0;
- private int _index = 0;
- private boolean _isEnded = false;
-
- public CachedNodeListIterator(DTMAxisIterator source) {
- _source = source;
- }
-
- public void setRestartable(boolean isRestartable) {
- //_isRestartable = isRestartable;
- //_source.setRestartable(isRestartable);
- }
-
- public DTMAxisIterator setStartNode(int node) {
- if (_isRestartable) {
- _startNode = node;
- _source.setStartNode(node);
- resetPosition();
-
- _isRestartable = false;
- }
- return this;
- }
-
- public int next() {
- return getNode(_index++);
- }
-
- public int getPosition() {
- return _index == 0 ? 1 : _index;
- }
-
- public int getNodeByPosition(int pos) {
- return getNode(pos);
- }
-
- public int getNode(int index) {
- if (index < _numCachedNodes) {
- return _nodes.at(index);
- }
- else if (!_isEnded){
- int node = _source.next();
- if (node != END) {
- _nodes.add(node);
- _numCachedNodes++;
- }
- else {
- _isEnded = true;
- }
- return node;
- }
- else
- return END;
- }
-
- public DTMAxisIterator cloneIterator() {
- ClonedNodeListIterator clone = new ClonedNodeListIterator(this);
- return clone;
- }
-
- public DTMAxisIterator reset() {
- _index = 0;
- return this;
- }
-
- public void setMark() {
- _source.setMark();
- }
-
- public void gotoMark() {
- _source.gotoMark();
- }
- }