/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2008 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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.  See the
 *  GNU Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.datatable;

import java.util.List;

import com.rapidminer.example.Attribute;
import com.rapidminer.example.Example;


/**
 *  This class allows to use {@link com.rapidminer.example.Example}s as basis for 
 *  {@link com.rapidminer.datatable.DataTableRow}.
 *  
 *   @author Ingo Mierswa
 *   @version $Id: Example2DataTableRowWrapper.java,v 1.3 2008/05/09 19:23:16 ingomierswa Exp $
 */
public class Example2DataTableRowWrapper implements DataTableRow {

	private Example example;
	
	private List<Attribute> allAttributes;
	
	private Attribute idAttribute;
	
	/** Creates a new wrapper. If the Id Attribute is null, the DataTableRow will not contain an Id. */
	public Example2DataTableRowWrapper(Example example, List<Attribute> allAttributes, Attribute idAttribute) {
		this.example = example;
		this.allAttributes = allAttributes;
		this.idAttribute = idAttribute;
	}
	
	public String getId() { 
		if (idAttribute == null)
			return null;
		else
			return this.example.getValueAsString(idAttribute);
	} 
	
	public double getValue(int index) {
		return this.example.getValue(allAttributes.get(index));
	}
	
	public int getNumberOfValues() {
		return allAttributes.size();
	}
}