1 package com.fasterxml.jackson.annotation;
2 
3 import java.util.HashMap;
4 import java.util.Map;
5 
6 import com.fasterxml.jackson.annotation.ObjectIdGenerator.IdKey;
7 
8 /**
9  * Simple implementation of {@link ObjectIdResolver}
10  *
11  * @author Pascal Gélinas
12  */
13 public class SimpleObjectIdResolver implements ObjectIdResolver {
14     protected Map<IdKey,Object> _items;
15 
SimpleObjectIdResolver()16     public SimpleObjectIdResolver() { }
17 
18     @Override
bindItem(IdKey id, Object ob)19     public void bindItem(IdKey id, Object ob)
20     {
21         if (_items == null) {
22             _items = new HashMap<ObjectIdGenerator.IdKey,Object>();
23         } else if (_items.containsKey(id)) {
24             throw new IllegalStateException("Already had POJO for id (" + id.key.getClass().getName() + ") [" + id
25                     + "]");
26         }
27         _items.put(id, ob);
28     }
29 
30     @Override
resolveId(IdKey id)31     public Object resolveId(IdKey id) {
32         return (_items == null) ? null : _items.get(id);
33     }
34 
35     @Override
canUseFor(ObjectIdResolver resolverType)36     public boolean canUseFor(ObjectIdResolver resolverType) {
37         return resolverType.getClass() == getClass();
38     }
39 
40     @Override
newForDeserialization(Object context)41     public ObjectIdResolver newForDeserialization(Object context) {
42         // 19-Dec-2014, tatu: Important: must re-create without existing mapping; otherwise bindings leak
43         //    (and worse, cause unnecessary memory retention)
44         return new SimpleObjectIdResolver();
45     }
46 }
47