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1 package org.jbpm.webapp.context;
2
3 import java.util.HashMap  ;
4 import java.util.Map ;
5
6 public class Context {
7
8 static ThreadLocal contextsThreadLocal = new ThreadLocal ();
9
10 public static void create() {
11 contextsThreadLocal.set(new HashMap ());
12 }
13
14 public static void destroy() {
15 contextsThreadLocal.set(null);
16 }
17
18 public static Object getContext(Class clazz) {
19 Map contexts = (Map ) contextsThreadLocal.get();
20 Object context = contexts.get(clazz);
21 if (context==null) {
22 try {
23 context = clazz.newInstance();
24 contexts.put(clazz, context);
25 } catch (Exception e) {
26 throw new RuntimeException ("couldn't instantiate context '"+clazz.getName()+"'");
27 }
28 }
29 return context;
30 }
31
32 public static PersistenceContext getPersistenceContext() {
33 return (PersistenceContext) getContext(PersistenceContext.class);
34 }
35
36 public static BpmContext getBpmContext() {
37 return (BpmContext) getContext(BpmContext.class);
38 }
39 }
40 |
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