package de.memtext.baseobjects;

import java.util.Collection;
import java.util.LinkedList;

/**
 *
 *  @author MB
 * List with different behaviour when setting items,
 * when index higher than count of elements doesn't throw
 * Exception, but adds as many nulls as necessary up to the
 * right count of elements and then sets the indicated position to 
 * the new value
 * 
 * * If for example a value for column 5 is to be stored, but the data List only
	 * contains values for column 1 and 2, for column 3 and 4 null values are stored.
	 
 * */
public class DataList extends LinkedList {
    private static final long serialVersionUID = 1;

    /**
     * 
     */
    public DataList() {
        super();
    }

    /**
     * @param c
     */
    public DataList(Collection c) {
        super(c);

    }

    /**
     * If for example a value for column 5 is to be stored, but the data List only
     * contains values for column 1 and 2, for column 3 and 4 null values are stored.
     
     */
    @Override
    public Object set(int index, Object o) {
        while (index > this.size() - 1) {
            this.add(null);
        }
        Object previous = this.get(index);
        super.set(index, o);
        return previous;
    }

}