KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > db4o > nativequery > optimization > ReflectUtil


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o.nativequery.optimization;
22
23 import java.lang.reflect.*;
24
25 import com.db4o.*;
26
27 public class ReflectUtil {
28     public static Method methodFor(Class JavaDoc clazz, String JavaDoc methodName, Class JavaDoc[] paramTypes) {
29         Class JavaDoc curclazz=clazz;
30         while(curclazz!=null) {
31             try {
32                 Method method=curclazz.getDeclaredMethod(methodName, paramTypes);
33                 Platform4.setAccessible(method);
34                 return method;
35             } catch (Exception JavaDoc e) {
36             }
37             curclazz=curclazz.getSuperclass();
38         }
39         return null;
40     }
41
42     public static Field fieldFor(final Class JavaDoc clazz,final String JavaDoc name) {
43         Class JavaDoc curclazz=clazz;
44         while(curclazz!=null) {
45             try {
46                 Field field=curclazz.getDeclaredField(name);
47                 Platform4.setAccessible(field);
48                 return field;
49             } catch (Exception JavaDoc e) {
50             }
51             curclazz=curclazz.getSuperclass();
52         }
53         return null;
54     }
55
56 }
57
Popular Tags