/*
* 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.
* @serial include
*
* @since 1.5
*/
class BinaryRelQueryExp extends QueryEval implements QueryExp {
/* Serial version */
private static final long serialVersionUID = -5690656271650491000L;
/**
* @serial The operator
*/
private int relOp;
/**
* @serial The first value
*/
private ValueExp exp1;
/**
* @serial The second value
*/
private ValueExp exp2;
/**
* Basic Constructor.
*/
public BinaryRelQueryExp() {
}
/**
* 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.
*/
public int getOperator() {
return relOp;
}
/**
* Returns the left value of the query.
*/
public ValueExp getLeftValue() {
return exp1;
}
/**
* Returns the right value of the query.
*/
public ValueExp getRightValue() {
return exp2;
}
/**
* 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.
*/
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 "=";
}
}