Package org.apache.qpid.jms.selector.filter

Class ArithmeticExpression

java.lang.Object

org.apache.qpid.jms.selector.filter.BinaryExpression

org.apache.qpid.jms.selector.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.qpid.jms.selector.filter.BinaryExpression

left, right

Constructor Summary

Constructors

Constructor	Description
ArithmeticExpression(Expression left, Expression right)

Method Summary

Modifier and Type	Method	Description
protected java.lang.Number	asNumber(java.lang.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 java.lang.Number	divide(java.lang.Number left, java.lang.Number right)
protected abstract java.lang.Object	evaluate(java.lang.Object lvalue, java.lang.Object rvalue)	Perform the evaluation.
java.lang.Object	evaluate(Filterable message)
protected java.lang.Number	minus(java.lang.Number left, java.lang.Number right)
protected java.lang.Number	mod(java.lang.Number left, java.lang.Number right)
protected java.lang.Number	multiply(java.lang.Number left, java.lang.Number right)
protected java.lang.Number	plus(java.lang.Number left, java.lang.Number right)

Methods inherited from class org.apache.qpid.jms.selector.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)

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 java.lang.Number plus(java.lang.Number left,
                                java.lang.Number right)

minus

protected java.lang.Number minus(java.lang.Number left,
                                 java.lang.Number right)

multiply

protected java.lang.Number multiply(java.lang.Number left,
                                    java.lang.Number right)

divide

protected java.lang.Number divide(java.lang.Number left,
                                  java.lang.Number right)

mod

protected java.lang.Number mod(java.lang.Number left,
                               java.lang.Number right)

asNumber

protected java.lang.Number asNumber(java.lang.Object value)

evaluate

public java.lang.Object evaluate(Filterable message)
                          throws FilterException

Parameters:

message - The message that is being selected against.

Returns:

the value of this expression

Throws:

FilterException - if an error occurs during evaluation.

evaluate

protected abstract java.lang.Object evaluate(java.lang.Object lvalue,
                                             java.lang.Object rvalue)

Perform the evaluation.

Parameters:

lvalue - the LHS of the evaluation.

rvalue - the RHS of the evaluation.

Returns:

the result of the evaluation.