| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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 1.2.4.1 2005/09/06 05:57:47 pvedula 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(); |
| } |
| } |