package com.planet_ink.coffee_mud.core.collections;
import java.util.*;
import com.planet_ink.coffee_mud.core.CMParms;
/*
Copyright 2014-2016 Bo Zimmerman
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
@SuppressWarnings("unchecked")
public class MultiCollection<T> implements Collection<T>
{
private final Vector<Collection<? extends T>> collections = new Vector<Collection<? extends T>>();
public MultiCollection(final Collection<T>... colls)
{
super();
if(colls==null)
return;
collections.addAll(Arrays.asList(colls));
collections.trimToSize();
}
@Override
public boolean add(T arg0)
{
if(collections.size()>0)
{
try
{
final Collection<T> coll=(Collection<T>)collections.get(collections.size()-1);
return coll.add(arg0);
}
catch (Exception e)
{
}
}
return false;
}
@Override
public boolean addAll(final Collection<? extends T> arg0)
{
collections.add(arg0);
collections.trimToSize();
return true;
}
@Override
public void clear()
{
collections.clear();
}
@Override
public boolean contains(Object arg0)
{
if(collections.size()>0)
{
try
{
for(int c=0;c<collections.size();c++)
{
if(collections.get(c).contains(arg0))
return true;
}
}
catch (Exception e)
{
}
}
return false;
}
@Override
public boolean containsAll(Collection<?> arg0)
{
for(final Object arg : arg0)
{
if(!contains(arg))
return false;
}
return true;
}
@Override
public boolean isEmpty()
{
if(collections.size()>0)
{
try
{
for(int c=0;c<collections.size();c++)
{
if(collections.get(c).size()>0)
return false;
}
}
catch (Exception e)
{
}
}
return true;
}
@Override
public Iterator<T> iterator()
{
return new MultiIterable<T>(collections,size()).iterator();
}
@Override
public boolean remove(Object arg0)
{
if(collections.size()>0)
{
try
{
for(int c=0;c<collections.size();c++)
{
if(collections.get(c).remove(arg0))
return true;
}
}
catch (Exception e)
{
}
}
return false;
}
@Override
public boolean removeAll(Collection<?> arg0)
{
if(collections.size()>0)
{
boolean returnable=false;
try
{
for(int c=0;c<collections.size();c++)
returnable = collections.get(c).removeAll(arg0) || returnable;
}
catch (Exception e)
{
}
return returnable;
}
return false;
}
@Override
public boolean retainAll(Collection<?> arg0)
{
if(collections.size()>0)
{
boolean returnable=false;
try
{
for(int c=0;c<collections.size();c++)
returnable = collections.get(c).retainAll(arg0) || returnable;
}
catch (Exception e)
{
}
return returnable;
}
return false;
}
@Override
public int size()
{
int total=0;
if(collections.size()>0)
{
try
{
for(int c=0;c<collections.size();c++)
total += collections.get(c).size();
}
catch (Exception e)
{
}
}
return total;
}
@Override
public Object[] toArray()
{
final Object[][] arrays=new Object[collections.size()][];
try
{
for(int c=0;c<collections.size();c++)
arrays[c]=collections.get(c).toArray();
}
catch (Exception e)
{
}
return CMParms.combine(arrays);
}
@SuppressWarnings("hiding")
@Override
public <T> T[] toArray(T[] arg0)
{
final Object[] objs=toArray();
if(arg0.length<objs.length)
arg0=Arrays.copyOf(arg0, objs.length);
int i=0;
for(Object o : objs)
arg0[i++]=(T)o;
return arg0;
}
}
