/*
 * Copyright 2005 JBoss Inc
 * 
 * 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.
 */

/**
 * @author <a href="mailto:stevearoonie@gmail.com">Steven Williams</a>
 * 
 * Cell containing an array of values
 */
package org.drools.template.parser;

import java.util.Map;

import org.drools.StatefulSession;
import org.drools.core.util.StringUtils;

public class ArrayCell implements Cell {
	Row row;

	String value;

	ArrayColumn column;

	private String[] values;
	
	public ArrayCell(final Row r, final ArrayColumn c) {
		row = r;
		column = c;
	}

	public void addValue(Map<String, Object> vars) {
		for (int i = 0; i < values.length; i++) {
			vars.put(column.getName() + i, values[i]);
		}		
	}

	public Column getColumn() {
		return column;
	}

	public Row getRow() {
		return row;
	}
	
	public String getValue() {
		return value;
	}

	public void insert(StatefulSession session) {
		session.insert(this);
		for (int i = 0; i < values.length; i++) {
			Cell cell = column.getType().createCell(row);
			cell.setValue(values[i]);
			cell.setIndex(i);
			cell.insert(session);
		}				
	}

	public void setIndex(int i) {
		throw new RuntimeException("You cannot call setIndex on an ArrayCell");
	}

	public int getIndex() {
		return -1;
	}

	public void setValue(String v) {
		value = v;
		values = StringUtils.splitPreserveAllTokens(value, ",");
	}

	public boolean isEmpty() {
		return StringUtils.isEmpty(value);
	}

}