org.apache.activemq.filter
Class ArithmeticExpression

java.lang.Object
  extended by org.apache.activemq.filter.BinaryExpression
      extended by 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
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
ArithmeticExpression(Expression left, Expression right)
           
 
Method Summary
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)
           
 Object evaluate(MessageEvaluationContext message)
           
protected abstract  Object evaluate(Object lvalue, Object rvalue)
           
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:


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