001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free SoftwareFoundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.xpath.pattern;
030:
031: import com.caucho.xpath.ExprEnvironment;
032:
033: import org.w3c.dom.Node;
034:
035: import java.util.ArrayList;
036:
037: /**
038: * Iterates through matching nodes.
039: */
040: public class NodeArrayListIterator extends NodeIterator {
041: protected ArrayList<Node> _list;
042: protected int _position;
043:
044: public NodeArrayListIterator(ExprEnvironment env,
045: ArrayList<Node> list) {
046: super (env);
047:
048: _list = list;
049: }
050:
051: /**
052: * Returns the current position.
053: */
054: public int getContextPosition() {
055: return _position;
056: }
057:
058: /**
059: * Returns the current position.
060: */
061: public int getContextSize() {
062: return _list.size();
063: }
064:
065: /**
066: * True if there's more data.
067: */
068: public boolean hasNext() {
069: return _position < _list.size();
070: }
071:
072: /**
073: * Returns the next node.
074: */
075: public Node next() {
076: return nextNode();
077: }
078:
079: /**
080: * Returns the next node.
081: */
082: public Node nextNode() {
083: if (_position < _list.size())
084: return _list.get(_position++);
085: else
086: return null;
087: }
088:
089: /**
090: * clones the iterator
091: */
092: public Object clone() {
093: NodeArrayListIterator clone = new NodeArrayListIterator(_env,
094: _list);
095:
096: clone._position = _position;
097:
098: return clone;
099: }
100: }
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