01: /*
02: * Copyright (c) 1998-2003 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 javax.el;
31:
32: import java.beans.FeatureDescriptor;
33: import java.util.Iterator;
34:
35: /**
36: * Resolves EL variables
37: */
38: public abstract class ELResolver {
39: public static final String RESOLVABLE_AT_DESIGN_TIME = "resolvableAtDesignTime";
40:
41: public static final String TYPE = "type";
42:
43: public ELResolver() {
44: }
45:
46: public abstract Class<?> getCommonPropertyType(ELContext context,
47: Object base);
48:
49: public abstract Iterator<FeatureDescriptor> getFeatureDescriptors(
50: ELContext context, Object base);
51:
52: public abstract Class<?> getType(ELContext context, Object base,
53: Object property);
54:
55: public abstract Object getValue(ELContext context, Object base,
56: Object property) throws PropertyNotFoundException,
57: ELException;
58:
59: public abstract boolean isReadOnly(ELContext context, Object base,
60: Object property) throws PropertyNotFoundException,
61: ELException;
62:
63: public abstract void setValue(ELContext context, Object base,
64: Object property, Object value)
65: throws PropertyNotFoundException,
66: PropertyNotWritableException, ELException;
67: }
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