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.jms.selector;
30:
31: import javax.jms.JMSException;
32: import javax.jms.Message;
33: import java.util.HashMap;
34:
35: /**
36: * The base selector.
37: */
38: public class InSelector extends Selector {
39: private Selector _expr;
40:
41: private HashMap<String, String> _values;
42:
43: InSelector(Selector expr) {
44: _expr = expr;
45: _values = new HashMap<String, String>();
46: }
47:
48: void addValue(String value) {
49: _values.put(value, value);
50: }
51:
52: /**
53: * Evaluate the message. The boolean literal selector returns
54: * the value of the boolean.
55: */
56: Object evaluate(Message message) throws JMSException {
57: Object lobj = _expr.evaluate(message);
58:
59: if (!(lobj instanceof String))
60: return NULL;
61:
62: return toBoolean(_values.get(lobj) != null);
63: }
64: }
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