01: /*
02: * hgcommons 7
03: * Hammurapi Group Common Library
04: * Copyright (C) 2003 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.eval;
24:
25: import java.lang.reflect.InvocationTargetException;
26: import java.lang.reflect.Method;
27:
28: public class MethodEntry {
29: Object object;
30: Method method;
31: String name;
32:
33: public MethodEntry(Object object, Method method) {
34: super ();
35: this .object = object;
36: this .method = method;
37: this .name = method.getName();
38: }
39:
40: public MethodEntry(Object object, Method method, String name) {
41: super ();
42: this .object = object;
43: this .method = method;
44: this .name = name;
45: }
46:
47: Object invoke(Object[] args) throws EvaluationException {
48: try {
49: return method.invoke(object, args);
50: } catch (IllegalAccessException e) {
51: throw new EvaluationException(e);
52: } catch (InvocationTargetException e) {
53: throw new EvaluationException(e);
54: }
55: }
56:
57: /**
58: * @param otherEntry
59: * @return 0 - neither is more specific, 1 - this one is more specific
60: * -1 - the other one is more specific.
61: */
62: int isMoreSpecific(MethodEntry otherEntry) {
63: Class[] otherTypes = otherEntry.method.getParameterTypes();
64: Class[] types = method.getParameterTypes();
65: if (otherTypes.length != types.length) {
66: return 0;
67: }
68:
69: for (int i = 0; i < types.length; i++) {
70: if (types[i].equals(otherTypes[i])) {
71: continue;
72: } else if (types[i].isAssignableFrom(otherTypes[i])) {
73: return -1;
74: } else if (otherTypes[i].isAssignableFrom(types[i])) {
75: return 1;
76: }
77: }
78:
79: return 0;
80: }
81: }
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