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 Alex Rojkov
27: */
28:
29: package javax.faces.validator;
30:
31: import javax.faces.context.FacesContext;
32: import javax.faces.component.UIComponent;
33: import javax.faces.component.StateHolder;
34: import javax.el.MethodExpression;
35: import javax.el.ELException;
36:
37: public class MethodExpressionValidator implements Validator,
38: StateHolder {
39:
40: private MethodExpression _expression;
41:
42: private boolean _transient;
43:
44: public MethodExpressionValidator() {
45: }
46:
47: public MethodExpressionValidator(MethodExpression expression) {
48: _expression = expression;
49: }
50:
51: public void validate(FacesContext context, UIComponent component,
52: Object value) throws ValidatorException {
53: try {
54: _expression.invoke(context.getELContext(), new Object[] {
55: context, component, value });
56: } catch (ELException e) {
57: Throwable t = e.getCause();
58:
59: if (t instanceof ValidatorException) {
60: throw (ValidatorException) t;
61: }
62:
63: throw e;
64: }
65: }
66:
67: public Object saveState(FacesContext context) {
68: return _expression;
69: }
70:
71: public void restoreState(FacesContext context, Object state) {
72: _expression = (MethodExpression) state;
73: }
74:
75: public boolean isTransient() {
76: return _transient;
77: }
78:
79: public void setTransient(boolean isTransient) {
80: _transient = isTransient;
81: }
82: }
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