/*
 * Copyright (c) 1999, 2003, Oracle and/or its affiliates. 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.management;


This class is used by the query-building mechanism to represent binary operations.
@serialinclude
Since:1.5
/** * This class is used by the query-building mechanism to represent binary * operations. * @serial include * * @since 1.5 */
class BinaryRelQueryExp extends QueryEval implements QueryExp { /* Serial version */ private static final long serialVersionUID = -5690656271650491000L;
@serialThe operator
/** * @serial The operator */
private int relOp;
@serialThe first value
/** * @serial The first value */
private ValueExp exp1;
@serialThe second value
/** * @serial The second value */
private ValueExp exp2;
Basic Constructor.
/** * Basic Constructor. */
public BinaryRelQueryExp() { }
Creates a new BinaryRelQueryExp with operator op applied on v1 and v2 values.
/** * Creates a new BinaryRelQueryExp with operator op applied on v1 and * v2 values. */
public BinaryRelQueryExp(int op, ValueExp v1, ValueExp v2) { relOp = op; exp1 = v1; exp2 = v2; }
Returns the operator of the query.
/** * Returns the operator of the query. */
public int getOperator() { return relOp; }
Returns the left value of the query.
/** * Returns the left value of the query. */
public ValueExp getLeftValue() { return exp1; }
Returns the right value of the query.
/** * Returns the right value of the query. */
public ValueExp getRightValue() { return exp2; }
Applies the BinaryRelQueryExp on an MBean.
Params:
  • name – The name of the MBean on which the BinaryRelQueryExp will be applied.
Throws:
Returns: True if the query was successfully applied to the MBean, false otherwise.
/** * Applies the BinaryRelQueryExp on an MBean. * * @param name The name of the MBean on which the BinaryRelQueryExp 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 { Object val1 = exp1.apply(name); Object val2 = exp2.apply(name); String sval1; String sval2; double dval1; double dval2; long lval1; long lval2; boolean bval1; boolean bval2; boolean numeric = val1 instanceof NumericValueExp; boolean bool = val1 instanceof BooleanValueExp; if (numeric) { if (((NumericValueExp)val1).isLong()) { lval1 = ((NumericValueExp)val1).longValue(); lval2 = ((NumericValueExp)val2).longValue(); switch (relOp) { case Query.GT: return lval1 > lval2; case Query.LT: return lval1 < lval2; case Query.GE: return lval1 >= lval2; case Query.LE: return lval1 <= lval2; case Query.EQ: return lval1 == lval2; } } else { dval1 = ((NumericValueExp)val1).doubleValue(); dval2 = ((NumericValueExp)val2).doubleValue(); switch (relOp) { case Query.GT: return dval1 > dval2; case Query.LT: return dval1 < dval2; case Query.GE: return dval1 >= dval2; case Query.LE: return dval1 <= dval2; case Query.EQ: return dval1 == dval2; } } } else if (bool) { bval1 = ((BooleanValueExp)val1).getValue().booleanValue(); bval2 = ((BooleanValueExp)val2).getValue().booleanValue(); switch (relOp) { case Query.GT: return bval1 && !bval2; case Query.LT: return !bval1 && bval2; case Query.GE: return bval1 || !bval2; case Query.LE: return !bval1 || bval2; case Query.EQ: return bval1 == bval2; } } else { sval1 = ((StringValueExp)val1).getValue(); sval2 = ((StringValueExp)val2).getValue(); switch (relOp) { case Query.GT: return sval1.compareTo(sval2) > 0; case Query.LT: return sval1.compareTo(sval2) < 0; case Query.GE: return sval1.compareTo(sval2) >= 0; case Query.LE: return sval1.compareTo(sval2) <= 0; case Query.EQ: return sval1.compareTo(sval2) == 0; } } return false; }
Returns the string representing the object.
/** * Returns the string representing the object. */
public String toString() { return "(" + exp1 + ") " + relOpString() + " (" + exp2 + ")"; } private String relOpString() { switch (relOp) { case Query.GT: return ">"; case Query.LT: return "<"; case Query.GE: return ">="; case Query.LE: return "<="; case Query.EQ: return "="; } return "="; } }