/*
 * JBoss, Home of Professional Open Source.
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

package org.teiid.language;

import org.teiid.language.visitor.LanguageObjectVisitor;

public class DerivedColumn extends BaseLanguageObject {

    private String alias;
    private Expression expression;
    private boolean projected;
    
    public DerivedColumn(String name, Expression expression) {
        this.alias = name;
        this.expression = expression;
    }
    
    public String getAlias() {
        return alias;
    }

    public Expression getExpression() {
        return expression;
    }

    public void acceptVisitor(LanguageObjectVisitor visitor) {
        visitor.visit(this);
    }

    public void setAlias(String name) {
        this.alias = name;
    }
    
    public void setExpression(Expression expression) {
        this.expression = expression;
    }
    
    /**
     * If this column is projected for use by Teiid
     * @return
     */
    public boolean isProjected() {
		return projected;
	}
    
    public void setProjected(boolean projected) {
		this.projected = projected;
	}

}
