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: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Scott Ferguson
28: */
29:
30: package com.caucho.el;
31:
32: import com.caucho.util.L10N;
33:
34: import javax.el.ELContext;
35: import javax.el.ELException;
36: import javax.el.PropertyNotFoundException;
37: import java.util.logging.Logger;
38:
39: /**
40: * Abstract implementation class for an expression.
41: */
42: public class LongValueExpression extends AbstractValueExpression {
43: protected static final Logger log = Logger
44: .getLogger(LongValueExpression.class.getName());
45: protected static final L10N L = new L10N(LongValueExpression.class);
46:
47: private Class _expectedType;
48:
49: public LongValueExpression(Expr expr, String expressionString,
50: Class expectedType) {
51: super (expr, expressionString);
52:
53: _expectedType = expectedType;
54: }
55:
56: public LongValueExpression(Expr expr, String expressionString) {
57: super (expr, expressionString);
58: }
59:
60: public LongValueExpression(Expr expr) {
61: super (expr);
62: }
63:
64: private LongValueExpression() {
65: }
66:
67: public Class<?> getExpectedType() {
68: if (_expectedType != null)
69: return _expectedType;
70: else
71: return Long.class;
72: }
73:
74: @Override
75: public Object getValue(ELContext context)
76: throws PropertyNotFoundException, ELException {
77: return new Long(_expr.evalLong(context));
78: }
79: }
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