Mercurial > hg > blitz_stable

comparison src/org/dancres/blitz/BootContext.java @ 0:3dc0c5604566

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:3dc0c5604566
1 package org.dancres.blitz;
2
3 import java.util.List;
4 import java.util.LinkedList;
5 import java.util.Iterator;
6
7 /**
8 Various components within Blitz require access to certain specific bits
9 of information concerning Boot state. BootContext is responsible for
10 holding all these bits of information and making them available to the
11 components.
12 */
13 public class BootContext {
14 private static List theContext = new LinkedList();
15
16 public static void add(BootInfo anInfo) {
17 synchronized(theContext) {
18 theContext.add(anInfo);
19 }
20 }
21
22 public static BootInfo get(Class aClass) {
23 validate(aClass);
24
25 synchronized(theContext) {
26 Iterator myInfos = theContext.iterator();
27
28 while (myInfos.hasNext()) {
29 BootInfo myInfo = (BootInfo) myInfos.next();
30
31 if (aClass.isInstance(myInfo))
32 return myInfo;
33 }
34 }
35
36 return null;
37 }
38
39 private static void validate(Class aClass) {
40 Class[] myInterfaces = aClass.getInterfaces();
41
42 for (int i = 0 ; i < myInterfaces.length; i++) {
43 if (myInterfaces[i].equals(BootInfo.class))
44 return;
45 }
46
47 throw new RuntimeException("Attempt to store object which is not a BootInfo");
48 }
49 }