NotQueryExp.java

/*
 * Copyright 1999-2008 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
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 */

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.
     */
    @Override
    public String toString()  {
        return "not (" + exp + ")";
    }
 }