Package org.apache.activemq.filter

Class ArithmeticExpression

java.lang.Object

org.apache.activemq.filter.BinaryExpression

org.apache.activemq.filter.ArithmeticExpression

All Implemented Interfaces:

Expression

public abstract class ArithmeticExpression
extends BinaryExpression

An expression which performs an operation on two expression values

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	DOUBLE
protected static int	INTEGER
protected static int	LONG

Fields inherited from class org.apache.activemq.filter.BinaryExpression

left, right

Constructor Summary

Constructors

Constructor	Description
ArithmeticExpression(Expression left, Expression right)

Method Summary

Modifier and Type	Method	Description
protected Number	asNumber(Object value)
static Expression	createDivide(Expression left, Expression right)
static Expression	createMinus(Expression left, Expression right)
static Expression	createMod(Expression left, Expression right)
static Expression	createMultiply(Expression left, Expression right)
static Expression	createPlus(Expression left, Expression right)
protected Number	divide(Number left, Number right)
protected abstract Object	evaluate(Object lvalue, Object rvalue)
Object	evaluate(MessageEvaluationContext message)
protected Number	minus(Number left, Number right)
protected Number	mod(Number left, Number right)
protected Number	multiply(Number left, Number right)
protected Number	plus(Number left, Number right)

Methods inherited from class org.apache.activemq.filter.BinaryExpression

equals, getExpressionSymbol, getLeft, getRight, hashCode, setLeft, setRight, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

INTEGER

protected static final int INTEGER

See Also:

Constant Field Values

LONG

protected static final int LONG

See Also:

Constant Field Values

DOUBLE

protected static final int DOUBLE

See Also:

Constant Field Values

Constructor Detail

ArithmeticExpression

public ArithmeticExpression(Expression left,
                            Expression right)

Parameters:

left -

right -

Method Detail

createPlus

public static Expression createPlus(Expression left,
                                    Expression right)

createMinus

public static Expression createMinus(Expression left,
                                     Expression right)

createMultiply

public static Expression createMultiply(Expression left,
                                        Expression right)

createDivide

public static Expression createDivide(Expression left,
                                      Expression right)

createMod

public static Expression createMod(Expression left,
                                   Expression right)

plus

protected Number plus(Number left,
                      Number right)

minus

protected Number minus(Number left,
                       Number right)

multiply

protected Number multiply(Number left,
                          Number right)

divide

protected Number divide(Number left,
                        Number right)

mod

protected Number mod(Number left,
                     Number right)

asNumber

protected Number asNumber(Object value)

evaluate

public Object evaluate(MessageEvaluationContext message)
                throws JMSException

Returns:

the value of this expression

Throws:

JMSException

evaluate

protected abstract Object evaluate(Object lvalue,
                                   Object rvalue)

Parameters:

lvalue -

rvalue -

Returns: