package de.memtext.baseobjects.coll;

import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;

/**
 * Basis for the collections, but default the used collection is a 
 * linkedList, subclasses may change to use a list or set
 *  @author MB
 * */
public class BaseObjectCollection implements Collection,Serializable {
	protected Collection collect;
	 private static final long serialVersionUID = 1;
	public BaseObjectCollection() {
		super();
		collect = new LinkedList();
	}



		public int size() {
		return collect.size();
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#isEmpty()
	 */
	public boolean isEmpty() {
		return collect.isEmpty();
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#contains(java.lang.Object)
	 */
	public boolean contains(Object o) {
		return collect.contains(o);
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#iterator()
	 */
	public Iterator iterator() {
		return collect.iterator();
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#toArray()
	 */
	public Object[] toArray() {
		return collect.toArray();
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#toArray(java.lang.Object[])
	 */
	public Object[] toArray(Object[] a) {
		return collect.toArray(a);
	}

	
	

	/* (non-Javadoc)
	 * @see java.util.Collection#containsAll(java.util.Collection)
	 */
	public boolean containsAll(Collection c) {
		return collect.containsAll(c);
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#addAll(java.util.Collection)
	 */
	public boolean addAll(Collection c) {
		return collect.addAll(c);
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#removeAll(java.util.Collection)
	 */
	public boolean removeAll(Collection c) {
		return collect.removeAll(c);
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#retainAll(java.util.Collection)
	 */
	public boolean retainAll(Collection c) {
		return collect.retainAll(c);
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#clear()
	 */
	public void clear() {
		collect.clear();
	}

	/* (non-Javadoc)
	 * @see java.util.Collection#add(java.lang.Object)
	 */
	public boolean add(Object o) {
		if (o==null) throw new IllegalArgumentException("can't add null value");
	return collect.add(o);
		}

	/* (non-Javadoc)
	 * @see java.util.Collection#remove(java.lang.Object)
	 */
	public boolean remove(Object o) {
		return collect.remove(o);
	}

	
	/**
	 * Only shallow copy
	 */
    protected Object clone() throws CloneNotSupportedException {
        BaseObjectCollection c=new BaseObjectCollection();
        c.addAll(this);
        return c;
    }
}
//Created on 30.1.2004