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Java > Open Source Codes > com > db4o > JDK_5


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;
22
23 import java.net.*;
24
25 import com.db4o.config.*;
26 import com.db4o.config.annotations.reflect.ConfigurationIntrospector;
27 import com.db4o.ext.*;
28 import com.db4o.reflect.*;
29 import com.db4o.reflect.jdk.*;
30
31 class JDK_5 extends JDK_1_4 {
32
33     private static final String JavaDoc ENUM_CLASSNAME = "java.lang.Enum";
34
35     private static ReflectClass enumClass;
36
37     public Config4Class extendConfiguration(ReflectClass clazz,
38             Configuration config, Config4Class classConfig) {
39         Class JavaDoc javaClazz = JdkReflector.toNative(clazz);
40         if(javaClazz==null) {
41             return classConfig;
42         }
43         try {
44             ConfigurationIntrospector instrospetor = new ConfigurationIntrospector(javaClazz, config, classConfig);
45             return instrospetor.apply();
46         } catch (Exception JavaDoc exc) {
47             throw new Db4oException(exc);
48         }
49     }
50     
51     public boolean isConnected(Socket socket){
52         if(socket == null){
53             return false;
54         }
55         if(! socket.isConnected() ){
56             return false;
57         }
58         return ! socket.isClosed();
59     }
60
61     boolean isEnum(Reflector reflector, ReflectClass claxx) {
62
63         if (claxx == null) {
64             return false;
65         }
66
67         if (enumClass == null) {
68             try {
69                 enumClass = reflector.forClass(Class.forName(ENUM_CLASSNAME));
70             } catch (ClassNotFoundException JavaDoc e) {
71                 return false;
72             }
73         }
74
75         return enumClass.isAssignableFrom(claxx);
76     }
77
78 }
79
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