01: /*
02: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.xpath.pattern;
30:
31: import com.caucho.xpath.ExprEnvironment;
32:
33: import org.w3c.dom.Node;
34: import org.w3c.dom.NodeList;
35:
36: /**
37: * Iterates through matching nodes.
38: */
39: public class NodeListIterator extends NodeIterator {
40: protected NodeList _list;
41: protected int _position;
42:
43: public NodeListIterator(ExprEnvironment env, NodeList list) {
44: super (env);
45:
46: _list = list;
47: }
48:
49: /**
50: * Returns the current position.
51: */
52: public int getContextPosition() {
53: return _position;
54: }
55:
56: /**
57: * Returns the current position.
58: */
59: public int getContextSize() {
60: return _list.getLength();
61: }
62:
63: /**
64: * True if there's more data.
65: */
66: public boolean hasNext() {
67: return _position < _list.getLength();
68: }
69:
70: /**
71: * Returns the next node.
72: */
73: public Node next() {
74: return nextNode();
75: }
76:
77: /**
78: * Returns the next node.
79: */
80: public Node nextNode() {
81: return _list.item(_position++);
82: }
83:
84: /**
85: * clones the iterator
86: */
87: public Object clone() {
88: NodeListIterator clone = new NodeListIterator(_env, _list);
89:
90: clone._position = _position;
91:
92: return clone;
93: }
94: }
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