/* ================================================================
 * JSQLParser : java based sql parser
 * ================================================================
 *
 * Project Info:  http://jsqlparser.sourceforge.net
 * Project Lead:  Leonardo Francalanci (leoonardoo@yahoo.it);
 *
 * (C) Copyright 2004, by Leonardo Francalanci
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 */

package net.sf.jsqlparser.expression;

/**
 * A clause of following syntax: 
 * WHEN condition THEN expression.
 * Which is part of a CaseExpression.
 * 
 * @author Havard Rast Blok
 */
public class WhenClause implements Expression {

	private Expression whenExpression;
	private Expression thenExpression;
	
	/* (non-Javadoc)
	 * @see net.sf.jsqlparser.expression.Expression#accept(net.sf.jsqlparser.expression.ExpressionVisitor)
	 */
	public void accept(ExpressionVisitor expressionVisitor) {
		expressionVisitor.visit(this);
	}

	/**
	 * @return Returns the thenExpression.
	 */
	public Expression getThenExpression() {
		return thenExpression;
	}
	/**
	 * @param thenExpression The thenExpression to set.
	 */
	public void setThenExpression(Expression thenExpression) {
		this.thenExpression = thenExpression;
	}
	/**
	 * @return Returns the whenExpression.
	 */
	public Expression getWhenExpression() {
		return whenExpression;
	}
	/**
	 * @param whenExpression The whenExpression to set.
	 */
	public void setWhenExpression(Expression whenExpression) {
		this.whenExpression = whenExpression;
	}
	
	public String toString() {
		return "WHEN "+whenExpression+" THEN "+thenExpression;
	}
}