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: /**
33: * Represents an EL expression factory
34: */
35: public abstract class ExpressionFactory {
36: public abstract Object coerceToType(Object obj, Class<?> targetType)
37: throws ELException;
38:
39: public abstract MethodExpression createMethodExpression(
40: ELContext context, String expression,
41: Class<?> expectedReturnType, Class<?>[] expectedParamTypes)
42: throws ELException;
43:
44: public abstract ValueExpression createValueExpression(
45: ELContext context, String expression, Class<?> expectedType)
46: throws ELException;
47:
48: public abstract ValueExpression createValueExpression(
49: Object instance, Class<?> expectedType) throws ELException;
50: }
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