Re: [Collections] deep cloning

[Edgar Poce]

But the goal of the Collections component is to extend the JDK 
framework, right?.
I think it would be useful to have a deepClone utility under 
CollectionUtils.

something like
	/**
	 * Deep clone.
	 * It creates a new Collection wich contains a clone of
	 * each element found in the original Collection.
	 * All the elements in the original Collection must support
	 * clone() method invocation. If not CloneNotSupportedException
	 * is thrown
	 *
	 * @param collection
	 * @return
	 * @throws CloneNotSupportedException
	 */
    private static Collection deepClone(Collection collection) throws 
CloneNotSupportedException {
        ArrayList retu = new ArrayList();
        Iterator iter = collection.iterator() ;
        while (iter.hasNext()) {
            Object o = (Object) iter.next() ;
            try {
                Method method = o.getClass().getDeclaredMethod("clone", 
new Class[]{});
                Object clone = method.invoke(o, new Object[]{} );
                retu.add(clone);
            } catch (Exception e) {
                throw new CloneNotSupportedException("Unable to clone 
element " + o + ". Exception=" + e.getClass().getName() + ". Message= " 
+ e.getMessage() );
            }
        }
        return retu ;
    }	

----- Original Message -----
From: Stephen Colebourne
> No, because the JDK collections API doesn't feature cloning as part 
of > its
> standard  functions.
>
> You could try commons-lang SerializationUtils clone. That will do 
what > you
> want, just a little slowly.
>
> Stephen
>
> ----- Original Message -----
> From: "Edgar Poce"
> > hi
> >   is there any method in the package that clones a Collection and
> > returns a new Collection wich contains a clone of each element?.
> >
> > Thanks in advance
> > Edgar
> >
> > >---------------------------------------------------------------------

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