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/*
* Distributed as part of mchange-commons-java 0.2.6.3
*
* Copyright (C) 2013 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of EITHER:
*
* 1) The GNU Lesser General Public License (LGPL), version 2.1, as
* published by the Free Software Foundation
*
* OR
*
* 2) The Eclipse Public License (EPL), version 1.0
*
* You may choose which license to accept if you wish to redistribute
* or modify this work. You may offer derivatives of this work
* under the license you have chosen, or you may provide the same
* choice of license which you have been offered here.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received copies of both LGPL v2.1 and EPL v1.0
* along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
* If not, the text of these licenses are currently available at
*
* LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php
*
*/
package com.mchange.v1.identicator;
import java.util.*;
import com.mchange.v1.util.*;
public class IdList implements List
{
Identicator id;
List inner;
public IdList(Identicator id, List inner)
{
this.id = id;
this.inner = inner;
}
public int size()
{ return inner.size(); }
public boolean isEmpty()
{ return inner.isEmpty(); }
public boolean contains(Object o)
{
IdHashKey wrappedO = new StrongIdHashKey(o, id);
return inner.contains(o);
}
public Iterator iterator()
{
return new WrapperIterator( inner.iterator(), true )
{
protected Object transformObject(Object o)
{
if (o instanceof IdHashKey)
{
IdHashKey ik = (IdHashKey) o;
return ik.getKeyObj();
}
else //we expect that o is null then...
return o;
}
};
}
public Object[] toArray()
{ return this.toArray( new Object[ this.size() ] ); }
public Object[] toArray(Object[] space)
{ return IteratorUtils.toArray( this.iterator(), this.size(), space ); }
public boolean add(Object o)
{ return inner.add( new StrongIdHashKey( o, id ) ); }
public boolean remove(Object o)
{ return inner.remove( new StrongIdHashKey( o, id ) ); }
public boolean containsAll(Collection c)
{
Iterator ii = c.iterator();
while (ii.hasNext())
{
IdHashKey test = new StrongIdHashKey( ii.next(), id );
if (! inner.contains( test ))
return false;
}
return true;
}
public boolean addAll(Collection c)
{
Iterator ii = c.iterator();
boolean changed = false;
while (ii.hasNext())
{
IdHashKey ik = new StrongIdHashKey( ii.next(), id );
changed |= inner.add( ik );
}
return changed;
}
public boolean addAll(int i, Collection c)
{
Iterator ii = c.iterator();
while (ii.hasNext())
{
IdHashKey ik = new StrongIdHashKey( ii.next(), id );
inner.add( i, ik );
++i;
}
return (c.size() > 0);
}
public boolean removeAll(Collection c)
{
Iterator ii = c.iterator();
boolean changed = false;
while (ii.hasNext())
{
IdHashKey ik = new StrongIdHashKey( ii.next(), id );
changed |= inner.remove( ik );
}
return changed;
}
public boolean retainAll(Collection c)
{
Iterator ii = inner.iterator();
boolean changed = false;
while (ii.hasNext())
{
IdHashKey ours = (IdHashKey) ii.next();
if (! c.contains( ours.getKeyObj() ))
{
inner.remove( ours );
changed = true;
}
}
return changed;
}
public void clear()
{ inner.clear(); }
//TODO: should I make some version of this that pays attention to identicator?
public boolean equals(Object o)
{
if (o instanceof List)
return ListUtils.equivalent( this, (List) o );
else
return false;
}
public int hashCode()
{ return ListUtils.hashContents( this ); }
public Object get(int i)
{ return ((IdHashKey) inner.get(i)).getKeyObj(); }
public Object set(int i, Object o)
{
IdHashKey ik = (IdHashKey) inner.set( i, new StrongIdHashKey( o, id ) );
return ik.getKeyObj();
}
public void add(int i, Object o)
{
inner.add( i, new StrongIdHashKey( o, id ) );
}
public Object remove(int i)
{
IdHashKey ik = (IdHashKey) inner.remove(i);
return (ik == null ? null : ik.getKeyObj());
}
public int indexOf(Object o)
{ return inner.indexOf( new StrongIdHashKey( o, id ) ); }
public int lastIndexOf(Object o)
{ return inner.lastIndexOf( new StrongIdHashKey( o, id ) ); }
//TODO: make a more efficient implementation...
public ListIterator listIterator()
{ return new LinkedList(this).listIterator(); }
//TODO: make a more efficient implementation...
public ListIterator listIterator(int i)
{ return new LinkedList(this).listIterator(i); }
public List subList(int a, int b)
{ return new IdList(id, inner.subList(a, b)); }
}
