/*
 * @(#)NotQueryExp.java	4.17 03/12/19
 * 
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.management;


/**
 * This class is used by the query-building mechanism to represent negations
 * of relational expressions.
 * @serial include
 *
 * @since 1.5
 */
class NotQueryExp extends QueryEval implements QueryExp { 


    /* Serial version */
    private static final long serialVersionUID = 5269643775896723397L;

    /**
     * @serial The negated {@link QueryExp}
     */
    private QueryExp exp;
    

    /**
     * Basic Constructor.
     */   
    public NotQueryExp() { 
    } 
    
    /**
     * Creates a new NotQueryExp for negating the specified QueryExp.
     */
    public NotQueryExp(QueryExp q) { 
	exp = q;
    } 


    /**
     * Returns the negated query expression of the query.
     */   
    public QueryExp getNegatedExp()  { 
	return exp;
    } 

    /**
     * Applies the NotQueryExp on a MBean.
     *
     * @param name The name of the MBean on which the NotQueryExp will be applied.
     *
     * @return  True if the query was successfully applied to the MBean, false otherwise.
     *     
     * @exception BadStringOperationException
     * @exception BadBinaryOpValueExpException
     * @exception BadAttributeValueExpException 
     * @exception InvalidApplicationException
     */
    public boolean apply(ObjectName name) throws BadStringOperationException, BadBinaryOpValueExpException,
	BadAttributeValueExpException, InvalidApplicationException  { 
	return exp.apply(name) == false;   
    } 

    /**
     * Returns the string representing the object.
     */
    public String toString()  { 
	return "not (" + exp + ")";
    } 

 }