/* ================================================================
* 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 basic class for binary expressions, that is expressions having a left member and a right member
* which are in turn expressions.
*/
public abstract class BinaryExpression implements Expression {
private Expression leftExpression;
private Expression rightExpression;
private boolean not = false;
public BinaryExpression() {
}
public Expression getLeftExpression() {
return leftExpression;
}
public Expression getRightExpression() {
return rightExpression;
}
public void setLeftExpression(Expression expression) {
leftExpression = expression;
}
public void setRightExpression(Expression expression) {
rightExpression = expression;
}
public void setNot() {
not = true;
}
public boolean isNot() {
return not;
}
public String toString() {
return (not? "NOT ":"") + getLeftExpression()+" "+getStringExpression()+" "+getRightExpression();
}
public abstract String getStringExpression();
}