Package io.atlasmap.expression.internal

Class ArithmeticExpression

java.lang.Object

io.atlasmap.expression.internal.BinaryExpression

io.atlasmap.expression.internal.ArithmeticExpression

All Implemented Interfaces:

Expression

public abstract class ArithmeticExpression
extends BinaryExpression

An expression which performs an operation on two expression values.

Version:

$Revision: 1.2 $

Field Summary

Fields

Modifier and Type	Field	Description
protected static int	DOUBLE	double
protected static int	INTEGER	integer
protected static int	LONG	long

Fields inherited from class io.atlasmap.expression.internal.BinaryExpression

left, right

Fields inherited from interface io.atlasmap.expression.Expression

CACHE

Constructor Summary

Constructors

Constructor	Description
ArithmeticExpression(Expression left, Expression right)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected Number	asNumber(Object value)	Conerts to Number.
static Expression	createDivide(Expression left, Expression right)	Creates divide expression.
static Expression	createMinus(Expression left, Expression right)	Creates minus expression.
static Expression	createMod(Expression left, Expression right)	Creates mod expression.
static Expression	createMultiply(Expression left, Expression right)	Creates multiply expression.
static Expression	createPlus(Expression left, Expression right)	Creates plus expression.
protected Number	divide(Number left, Number right)	Calculates divide.
io.atlasmap.v2.Field	evaluate(ExpressionContext message)	Evaluates the expression.
protected abstract io.atlasmap.v2.Field	evaluate(io.atlasmap.v2.Field lvalue, io.atlasmap.v2.Field rvalue)	Evaluates the expression.
protected Number	minus(Number left, Number right)	Calculates minus.
protected Number	mod(Number left, Number right)	Calculates mod.
protected Number	multiply(Number left, Number right)	Calculates multiply.
protected Number	plus(Number left, Number right)	Calculates plus.

Methods inherited from class io.atlasmap.expression.internal.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

integer

See Also:

Constant Field Values

LONG

protected static final int LONG

long

See Also:

Constant Field Values

DOUBLE

protected static final int DOUBLE

double

See Also:

Constant Field Values

Constructor Detail

ArithmeticExpression

public ArithmeticExpression(Expression left,
                            Expression right)

Constructor.

Parameters:

left - The left Expression

right - The right Expression

Method Detail

createPlus

public static Expression createPlus(Expression left,
                                    Expression right)

Creates plus expression.

Parameters:

left - left

right - right

Returns:

expression

createMinus

public static Expression createMinus(Expression left,
                                     Expression right)

Creates minus expression.

Parameters:

left - left

right - right

Returns:

expression

createMultiply

public static Expression createMultiply(Expression left,
                                        Expression right)

Creates multiply expression.

Parameters:

left - left

right - right

Returns:

expression

createDivide

public static Expression createDivide(Expression left,
                                      Expression right)

Creates divide expression.

Parameters:

left - left

right - right

Returns:

expression

createMod

public static Expression createMod(Expression left,
                                   Expression right)

Creates mod expression.

Parameters:

left - left

right - right

Returns:

expression

plus

protected Number plus(Number left,
                      Number right)

Calculates plus.

Parameters:

left - left

right - right

Returns:

result

minus

protected Number minus(Number left,
                       Number right)

Calculates minus.

Parameters:

left - left

right - right

Returns:

result

multiply

protected Number multiply(Number left,
                          Number right)

Calculates multiply.

Parameters:

left - left

right - right

Returns:

result

divide

protected Number divide(Number left,
                        Number right)

Calculates divide.

Parameters:

left - left

right - right

Returns:

result

mod

protected Number mod(Number left,
                     Number right)

Calculates mod.

Parameters:

left - left

right - right

Returns:

result

asNumber

protected Number asNumber(Object value)

Conerts to Number.

Parameters:

value - value

Returns:

result

evaluate

public io.atlasmap.v2.Field evaluate(ExpressionContext message)
                              throws ExpressionException

Evaluates the expression.

Parameters:

message - expression context

Returns:

result Field

Throws:

ExpressionException - If evaluation fails

evaluate

protected abstract io.atlasmap.v2.Field evaluate(io.atlasmap.v2.Field lvalue,
                                                 io.atlasmap.v2.Field rvalue)

Evaluates the expression.

Parameters:

lvalue - Field represents left value

rvalue - Field represents right value

Returns:

Field represents a result