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1 package jfun.yan.xml;
2
3 import java.util.LinkedHashMap  ;
4 import java.util.Set ;
5
6 final class NutsRegistrar {
7 private final LinkedHashMap store = new LinkedHashMap ();
8 static class Entry{
9 private final boolean overridable;
10 private final Object obj;
11 private final Location location;
12 Location getLocation() {
13 return location;
14 }
15 Object getValue() {
16 return obj;
17 }
18 boolean isOverridable() {
19 return overridable;
20 }
21 Entry(Object obj, boolean overridable, Location location) {
22 this.location = location;
23 this.obj = obj;
24 this.overridable = overridable;
25 }
26
27 }
28 void register(Object key, Object val, boolean overridable,
29 boolean overriding, Location loc){
30 final Entry old = (Entry)store.get(key);
31 if(old!=null){
32 if(!overriding){
33 throw new ConfigurationException("component key duplidate with "
34 + old.getLocation(), loc);
35 }
36 if(!old.isOverridable()){
37 throw new ConfigurationException("dynamic registration not overridable at "
38 + old.getLocation(), loc);
39 }
40 store.remove(key);
41 }
42 store.put(key, new Entry(val, overridable, loc));
43 }
44 int size(){
45 return store.size();
46 }
47 boolean isEmpty(){
48 return store.isEmpty();
49 }
50 Entry getEntry(Object key){
51 return (Entry)store.get(key);
52 }
53 Set keySet(){
54 return store.keySet();
55 }
56 }
57 |
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