com.edorasware.commons.core.field

Class FieldChange

java.lang.Object

com.edorasware.commons.core.field.FieldChange

public final class FieldChange
extends Object

This class encapsulates a single value change for a given field.

Constructor Summary

Constructors

Constructor and Description
FieldChange(FieldId fieldId, Object oldValue, Object newValue) Creates a new field change with the given old and new value.
FieldChange(FieldId fieldId, Object oldValue, Object newValue, Object delta) Creates a new field change with the given old and new value and the explicit delta value.

Method Summary

Modifier and Type	Method and Description
Object	getDelta()
FieldId	getFieldId()
Object	getNewValue()
Object	getOldValue()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldChange

public FieldChange(FieldId fieldId,
                   Object oldValue,
                   Object newValue)

Creates a new field change with the given old and new value. The delta value is assumed to be the new value.

Parameters:

fieldId - the id of the affected field

oldValue - the old value

newValue - the new value

FieldChange

public FieldChange(FieldId fieldId,
                   Object oldValue,
                   Object newValue,
                   Object delta)

Creates a new field change with the given old and new value and the explicit delta value. The delta value is primarily interesting when the old and new value are Collections classes and determining the difference is complex or even impossible.

Parameters:

fieldId - the id of the affected field

oldValue - the old value

newValue - the new value

delta - the delta that leads from the old value to the new value

Method Detail

getFieldId

public FieldId getFieldId()

getOldValue

public Object getOldValue()

getNewValue

public Object getNewValue()

getDelta

public Object getDelta()

toString

public String toString()

Overrides:

toString in class Object