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1
5 package com.teamkonzept.lib;
6
7 public class TKClassRegistry {
8
9 TKHashtable registry = new TKHashtable();
10 TKHashtable cache = new TKHashtable();
11
12 public TKClassRegistry()
13 {
14 }
15
16 public synchronized void registerClass( String  classId, String className )
17 {
18 String oldEntry = (String ) registry.put( classId, className );
19 if( !((oldEntry == null) || (oldEntry.equals( className ))) ) {
20 cache.remove( classId );
21 }
22 }
23
24 public synchronized Object get( String classId )
25 throws
26 TKUnregisteredClassException,
27 ClassNotFoundException ,
28 InstantiationException ,
29 IllegalAccessException
30 {
31 Class objectClass = (Class ) cache.get( classId );
32 if( objectClass == null ) {
33 String className = (String ) registry.get( classId );
34 if( className == null ) throw new TKUnregisteredClassException(classId);
35 objectClass = Class.forName( className );
36 cache.put( classId, objectClass );
37 }
38
39 return objectClass.newInstance();
40 }
41
42 public Object get( String classId, Object initData )
43 throws
44 TKUnregisteredClassException,
45 ClassNotFoundException ,
46 InstantiationException ,
47 IllegalAccessException
48 {
49 Object result = get( classId );
50 initObject( classId, result, initData );
51 return result;
52 }
53
54 public void initObject( String classId, Object classObject, Object initData )
55 throws
56 TKUnregisteredClassException,
57 ClassNotFoundException ,
58 InstantiationException ,
59 IllegalAccessException
60 {}
61
62 }
63
64 |
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