01: //--------------------------------------------------------------------------
02: // Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
03: // All rights reserved.
04: //
05: // Redistribution and use in source and binary forms, with or without
06: // modification, are permitted provided that the following conditions are
07: // met:
08: //
09: // Redistributions of source code must retain the above copyright notice,
10: // this list of conditions and the following disclaimer.
11: // Redistributions in binary form must reproduce the above copyright
12: // notice, this list of conditions and the following disclaimer in the
13: // documentation and/or other materials provided with the distribution.
14: // Neither the name of the Drew Davidson nor the names of its contributors
15: // may be used to endorse or promote products derived from this software
16: // without specific prior written permission.
17: //
18: // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19: // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20: // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21: // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22: // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23: // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24: // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
25: // OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26: // AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27: // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
28: // THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
29: // DAMAGE.
30: //--------------------------------------------------------------------------
31: package ognl;
32:
33: import java.util.Map;
34:
35: /**
36: * This interface defines methods for callinig methods in a target object.
37: * Methods are broken up into static and instance methods for convenience.
38: * indexes into the target object, which must be an array.
39: * @author Luke Blanshard (blanshlu@netscape.net)
40: * @author Drew Davidson (drew@ognl.org)
41: */
42: public interface MethodAccessor {
43: /**
44: * Calls the static method named with the arguments given on the class given.
45: * @param context expression context in which the method should be called
46: * @param targetClass the object in which the method exists
47: * @param methodName the name of the method
48: * @param args the arguments to the method
49: * @result result of calling the method
50: * @exception MethodFailedException if there is an error calling the method
51: */
52: Object callStaticMethod(Map context, Class targetClass,
53: String methodName, Object[] args)
54: throws MethodFailedException;
55:
56: /**
57: * Calls the method named with the arguments given.
58: * @param context expression context in which the method should be called
59: * @param target the object in which the method exists
60: * @param methodName the name of the method
61: * @param args the arguments to the method
62: * @result result of calling the method
63: * @exception MethodFailedException if there is an error calling the method
64: */
65: Object callMethod(Map context, Object target, String methodName,
66: Object[] args) throws MethodFailedException;
67: }
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