adressevedligehold/util/DeduplicateHelper.java

package dk.daoas.adressevedligehold.util;

import java.util.HashMap;

public class DeduplicateHelper<T> {
        private HashMap<T,T> cache;
        
        public DeduplicateHelper() {
                cache = new HashMap<T,T>();
        }
        
        public DeduplicateHelper(int initialCapacity) {
                cache = new HashMap<T,T>(initialCapacity);
        }
        
        
        
        public T getInstance(T newT) {
                if (newT == null) {
                        return null;
                }
                
                T cachedT = cache.get(newT);
                if ( cachedT == null ) {
                        cachedT = newT;
                        cache.put(newT, newT);                          
                }
                return cachedT;
        }
        
        public int size() {
                return cache.size();
        }
        
        public void clear() {
                cache.clear();
        }
        
}
1	package dk.daoas.adressevedligehold.util;
2
3	import java.util.HashMap;
4
5	public class DeduplicateHelper<T> {
6	private HashMap<T,T> cache;
7
8	public DeduplicateHelper() {
9	cache = new HashMap<T,T>();
10	}
11
12	public DeduplicateHelper(int initialCapacity) {
13	cache = new HashMap<T,T>(initialCapacity);
14	}
15
16
17
18	public T getInstance(T newT) {
19	if (newT == null) {
20	return null;
21	}
22
23	T cachedT = cache.get(newT);
24	if ( cachedT == null ) {
25	cachedT = newT;
26	cache.put(newT, newT);
27	}
28	return cachedT;
29	}
30
31	public int size() {
32	return cache.size();
33	}
34
35	public void clear() {
36	cache.clear();
37	}
38
39	}