org.openl.rules.variation

Class Variation

java.lang.Object

org.openl.rules.variation.Variation

Direct Known Subclasses:

ArgumentReplacementVariation, ComplexVariation, DeepCloningVariation, JXPathVariation, NoVariation

public abstract class Variation
extends Object

Common variations class. It should have unique ID and handle two phases: modifying arguments before the calculations and rolling back changes after execution. To store previous values of changed fields there can be used stack passed as argument(if it is needed.)

Author:

PUdalau, Marat Kamalov

Constructor Summary

Constructors

Constructor and Description
Variation() No argument constructor.
Variation(String variationID) Constructs variation with the ID.

Method Summary

Modifier and Type	Method and Description
abstract Object[]	applyModification(Object[] originalArguments) Modifies original arguments before the calculation.
abstract Object	currentValue(Object[] originalArguments) Returns current value for this variation
String	getVariationID()
abstract void	revertModifications(Object[] modifiedArguments, Object previousValue) Reverts changes of arguments after the calculation.
void	setVariationID(String variationID)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Variation

public Variation()

No argument constructor. Required for WS data binding.

Variation

public Variation(String variationID)

Constructs variation with the ID.

Parameters:

variationID - Unique ID.

Method Detail

getVariationID

public String getVariationID()

Returns:

Unique ID of this variation.

setVariationID

public void setVariationID(String variationID)

currentValue

public abstract Object currentValue(Object[] originalArguments)

Returns current value for this variation

Parameters:

originalArguments -

Returns:

applyModification

public abstract Object[] applyModification(Object[] originalArguments)

Modifies original arguments before the calculation.

Parameters:

originalArguments - Original arguments for calculation.

stack - The Stack instance to store previous values of changed fields.

Returns:

Modified arguments.

revertModifications

public abstract void revertModifications(Object[] modifiedArguments,
                                         Object previousValue)

Reverts changes of arguments after the calculation.

Parameters:

modifiedArguments - Modified arguments.

stack - Stack where previous values of modified fields were stored.