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1   package org.exolab.castor.mapping.loader.collection.handler;
2   
3   import java.util.Enumeration;
4   import java.util.Vector;
5   
6   import org.exolab.castor.mapping.CollectionHandler;
7   import org.exolab.castor.mapping.loader.CollectionHandlers;
8   
9   public final class VectorCollectionHandler<T> implements CollectionHandler<T> {
10  
11    @SuppressWarnings("unchecked")
12    public Object add(Object collection, T object) {
13      if (collection == null) {
14        collection = new Vector<T>();
15        ((Vector<T>) collection).addElement(object);
16        return collection;
17      }
18      ((Vector<T>) collection).addElement(object);
19      return null;
20    }
21  
22    @SuppressWarnings("unchecked")
23    public Enumeration<T> elements(Object collection) {
24      if (collection == null)
25        return new CollectionHandlers.EmptyEnumerator<T>();
26      return ((Vector<T>) collection).elements();
27    }
28  
29    @SuppressWarnings("unchecked")
30    public int size(Object collection) {
31      if (collection == null)
32        return 0;
33      return ((Vector<T>) collection).size();
34    }
35  
36    @SuppressWarnings("unchecked")
37    public Object clear(Object collection) {
38      if (collection != null)
39        ((Vector<T>) collection).removeAllElements();
40      return null;
41    }
42  
43    public String toString() {
44      return "Vector";
45    }
46  }