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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
package org.datayoo.moql.metadata;

import org.apache.commons.lang3.Validate;

import java.io.Serializable;

/**
 * 
 * @author Tang Tadin
 *
 */
public class OrderMetadata implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	protected String column;
	
	protected OrderType orderType = OrderType.ASC;
	
	public OrderMetadata(String column) {
		this(column, OrderType.ASC);
	}
	
	public OrderMetadata(String column, OrderType orderType) {
		Validate.notEmpty(column, "Parameter 'column' is empty!");
		if (column.indexOf('(') != -1) {
			column = column.replace('(', '$');
			column = column.replace(')', '$');
			column = column.replace(',', '$');
			column = column.replace('.', '_');
		}
		this.column = column;
		if (orderType != null)
			this.orderType = orderType;
	}

	public OrderType getOrderType() {
		return orderType;
	}

	public void setOrderType(OrderType orderType) {
		if (orderType != null)
			this.orderType = orderType;
	}

	/**
	 * @return the column
	 */
	public String getColumn() {
		return column;
	}
	
}