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Commons Collections僥楼永芝?屈? - 園殻秘壇利

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-06-16

Commons Collections僥楼永芝?屈?

扮寂:2011-07-20 鴬人坩 Phinecos

public abstract class AbstractBagDecorator extends AbstractCollectionDecorator implements Bag {    protected AbstractBagDecorator() {      super();    }    protected AbstractBagDecorator(Bag bag) {      super(bag);    }    protected Bag getBag() {      return (Bag) getCollection();    }    public int getCount(Object object) {      return getBag().getCount(object);    }    public boolean add(Object object, int count) {      return getBag().add(object, count);    }    public boolean remove(Object object, int count) {      return getBag().remove(object, count);    }    public Set uniqueSet() {      return getBag().uniqueSet();    } }

public abstract class AbstractSortedBagDecorator extends AbstractBagDecorator implements SortedBag

{    protected AbstractSortedBagDecorator() {      super();    }    protected AbstractSortedBagDecorator(SortedBag bag) {      super(bag);    }    protected SortedBag getSortedBag() {      return (SortedBag) getCollection();    }    public Object first() {      return getSortedBag().first();    }    public Object last() {      return getSortedBag().last();    }    public Comparator comparator() {      return getSortedBag().comparator();    } }

public abstract class AbstractMapBag implements Bag

{    /** The map to use to store the data */    private transient Map map;    /** The current total size of the bag */    private int size;    /** The modification count for fail fast iterators */    private transient int modCount;    /** The modification count for fail fast iterators */ private transient Set uniqueSet;    protected AbstractMapBag() {      super();    }    protected AbstractMapBag(Map map) {      super();      this.map = map;    }    protected Map getMap() {      return map;    }    public int size() {      return size;    }    public boolean isEmpty() {      return map.isEmpty();    }    public int getCount(Object object) {      MutableInteger count = (MutableInteger) map.get(object);      if (count != null) {        return count.value;      }      return 0;    }    public boolean contains(Object object) {      return map.containsKey(object);    }    public boolean containsAll(Collection coll) {      if (coll instanceof Bag) {        return containsAll((Bag) coll);      }      return containsAll(new HashBag(coll));    }    boolean containsAll(Bag other) {      boolean result = true;      Iterator it = other.uniqueSet().iterator();      while (it.hasNext()) {        Object current = it.next();        boolean contains = getCount(current) >= other.getCount(current);        result = result && contains;      }      return result;    }    public Iterator iterator() {     

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