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Java Source Code / Java Documentation » Library » Apache common Collections » org.apache.commons.collections.bag 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


org.apache.commons.collections.collection.TransformedCollection
   org.apache.commons.collections.bag.TransformedBag

All known Subclasses:   org.apache.commons.collections.bag.TransformedSortedBag,
TransformedBag
public class TransformedBag extends TransformedCollection implements Bag(Code)
Decorates another Bag to transform objects that are added.

The add methods are affected by this class. Thus objects must be removed or searched for using their transformed form. For example, if the transformation converts Strings to Integers, you must use the Integer form to remove objects.

This class is Serializable from Commons Collections 3.1.
since:
   Commons Collections 3.0
version:
   $Revision: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $
author:
   Stephen Colebourne




Constructor Summary
protected  TransformedBag(Bag bag, Transformer transformer)
     Constructor that wraps (not copies).

Method Summary
public  booleanadd(Object object, int nCopies)
    
public static  Bagdecorate(Bag bag, Transformer transformer)
     Factory method to create a transforming bag.
protected  BaggetBag()
     Gets the decorated bag.
public  intgetCount(Object object)
    
public  booleanremove(Object object, int nCopies)
    
public  SetuniqueSet()
    


Constructor Detail
TransformedBag
protected TransformedBag(Bag bag, Transformer transformer)(Code)
Constructor that wraps (not copies).

If there are any elements already in the bag being decorated, they are NOT transformed.
Parameters:
  bag - the bag to decorate, must not be null
Parameters:
  transformer - the transformer to use for conversion, must not be null
throws:
  IllegalArgumentException - if bag or transformer is null





Method Detail
add
public boolean add(Object object, int nCopies)(Code)



decorate
public static Bag decorate(Bag bag, Transformer transformer)(Code)
Factory method to create a transforming bag.

If there are any elements already in the bag being decorated, they are NOT transformed.
Parameters:
  bag - the bag to decorate, must not be null
Parameters:
  transformer - the transformer to use for conversion, must not be null a new transformed Bag
throws:
  IllegalArgumentException - if bag or transformer is null




getBag
protected Bag getBag()(Code)
Gets the decorated bag. the decorated bag



getCount
public int getCount(Object object)(Code)



remove
public boolean remove(Object object, int nCopies)(Code)



uniqueSet
public Set uniqueSet()(Code)



Fields inherited from org.apache.commons.collections.collection.TransformedCollection
final protected Transformer transformer(Code)(Java Doc)

Methods inherited from org.apache.commons.collections.collection.TransformedCollection
public boolean add(Object object)(Code)(Java Doc)
public boolean addAll(Collection coll)(Code)(Java Doc)
public static Collection decorate(Collection coll, Transformer transformer)(Code)(Java Doc)
protected Object transform(Object object)(Code)(Java Doc)
protected Collection transform(Collection coll)(Code)(Java Doc)

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