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 Software Foundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package com.caucho.amber.expr;
30:
31: import com.caucho.amber.query.FromItem;
32:
33: /**
34: * Bound identifier expression.
35: */
36: public class CollectionIdExpr extends IdExpr {
37: private AmberExpr _path;
38:
39: /**
40: * Creates a new unbound id expression.
41: */
42: public CollectionIdExpr(FromItem fromItem, AmberExpr path) {
43: super (fromItem);
44:
45: _path = path;
46: }
47:
48: /**
49: * Returns the underlying path.
50: */
51: AmberExpr getPath() {
52: return _path;
53: }
54:
55: /**
56: * Returns true if the expression uses the from item.
57: */
58: public boolean usesFrom(FromItem from, int type, boolean isNot) {
59: return ((getFromItem() == from) || (getFromItem().getJoinExpr()
60: .getJoinTarget() == from));
61: }
62: }
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