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	/*
	* Copyright (c) 1999, 2008, 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);
	boolean numeric = val1 instanceof NumericValueExp;
	boolean bool = val1 instanceof BooleanValueExp;
	if (numeric) {
	if (((NumericValueExp)val1).isLong()) {
	long lval1 = ((NumericValueExp)val1).longValue();
	long 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 {
	double dval1 = ((NumericValueExp)val1).doubleValue();
	double 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) {

	boolean bval1 = ((BooleanValueExp)val1).getValue().booleanValue();
	boolean 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 {
	String sval1 = ((StringValueExp)val1).getValue();
	String 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.
	*/
	@Override
	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 "=";
	}

	}

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