andexpression.java

来自「mysql集群」· Java 代码 · 共 48 行

/*
 * 	This program is free software; you can redistribute it and/or modify it under the terms of 
 * the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, 
 * or (at your option) any later version. 
 * 
 * 	This program 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 General Public License for more details. 
 * 	You should have received a copy of the GNU General Public License along with this program; 
 * if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package com.meidusa.amoeba.parser.expression;

/**
 * And Expression
 * @author <a href=mailto:[e-mail]>Struct chen</a>
 *
 */
public class AndExpression extends BaseExpressionList {

	public AndExpression(){
		
	}
	public AndExpression(Expression node) {
		super(node);
	}
	
	@SuppressWarnings("unchecked")
	public Comparable evaluate(Object[] parameters) {
		for(Expression e :eList){
			if(!(Boolean)e.evaluate(parameters)){
				return Boolean.FALSE;
			}
		}
		return Boolean.TRUE;
	}

	protected  BaseExpressionList getReverseObject(){
		return new OrExpression(null);
	}
	
	protected void toString(StringBuilder builder){
		this.toString(builder, " AND ");
	}
	
	
}