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: * Free SoftwareFoundation, Inc.
23: * 59 Temple Place, Suite 330
24: * Boston, MA 02111-1307 USA
25: *
26: * @author Scott Ferguson
27: */
28:
29: package javax.servlet.jsp.el;
30:
31: /**
32: * Allows evaluation of JSP EL.
33: */
34: public abstract class ExpressionEvaluator {
35: /**
36: * Evaluates the expression.
37: */
38: abstract public Object evaluate(String expression,
39: Class expectedType, VariableResolver varEnv,
40: FunctionMapper funEnv) throws ELException;
41:
42: /**
43: * Evaluates the expression.
44: */
45: abstract public Expression parseExpression(String expression,
46: Class expectedType, FunctionMapper funEnv)
47: throws ELException;
48: }
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