org.openl.rules.variation

Class JXPathVariation

java.lang.Object

org.openl.rules.variation.Variation

org.openl.rules.variation.JXPathVariation

public class JXPathVariation
extends Variation

Variation implementation using to find fields to modify JXpath (See http://commons.apache.org/jxpath/). Note: path can not point on root object(path "."), only fields modifications supported. If you want to replace entire argument you should use ArgumentReplacementVariation.

Author:

PUdalau, Marat Kamalov

Constructor Summary

Constructors

Constructor and Description
JXPathVariation() Constructs JXPath variation.
JXPathVariation(String variationID, int updatedArgumentIndex, String path, Object valueToSet) Constructs JXPath variation.

Method Summary

Modifier and Type	Method and Description
Object[]	applyModification(Object[] originalArguments) Modifies original arguments before the calculation.
Object	currentValue(Object[] originalArguments) Returns current value for this variation
String	getPath()
int	getUpdatedArgumentIndex()
Object	getValueToSet()
void	revertModifications(Object[] modifiedArguments, Object previousValue) Reverts changes of arguments after the calculation.
void	setPath(String path)
void	setUpdatedArgumentIndex(int updatedArgumentIndex)
void	setValueToSet(Object valueToSet)

Methods inherited from class org.openl.rules.variation.Variation

getVariationID, setVariationID

Methods inherited from class java.lang.Object

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

Constructor Detail

JXPathVariation

public JXPathVariation()

Constructs JXPath variation.

JXPathVariation

public JXPathVariation(String variationID,
                       int updatedArgumentIndex,
                       String path,
                       Object valueToSet)

Constructs JXPath variation.

Parameters:

variationID - Unique ID of variations.

updatedArgumentIndex - index of argument to modify.

path - Path supported by JXPath that point to field to modify.

valueToSet -

Method Detail

currentValue

public Object currentValue(Object[] originalArguments)

Description copied from class: Variation

Returns current value for this variation

Specified by:

currentValue in class Variation

Returns:

applyModification

public Object[] applyModification(Object[] originalArguments)

Description copied from class: Variation

Modifies original arguments before the calculation.

Specified by:

applyModification in class Variation

Parameters:

originalArguments - Original arguments for calculation.

Returns:

Modified arguments.

revertModifications

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

Description copied from class: Variation

Reverts changes of arguments after the calculation.

Specified by:

revertModifications in class Variation

Parameters:

modifiedArguments - Modified arguments.

getUpdatedArgumentIndex

public int getUpdatedArgumentIndex()

Returns:

Index of arguments to be modified.

setUpdatedArgumentIndex

public void setUpdatedArgumentIndex(int updatedArgumentIndex)

getPath

public String getPath()

Returns:

path to field to be modified.

setPath

public void setPath(String path)

getValueToSet

public Object getValueToSet()

Returns:

value to set into modified field.

setValueToSet

public void setValueToSet(Object valueToSet)