com.threerings.delta
Class ReflectiveDelta

java.lang.Object
  com.threerings.delta.Delta
      com.threerings.delta.ReflectiveDelta

All Implemented Interfaces:

com.threerings.io.Streamable

Direct Known Subclasses:

ActorDelta

public class ReflectiveDelta
extends Delta

A delta object that uses reflection to compare and modify the objects' fields. Note that unchanged object fields will be preserved by reference.

Nested Class Summary

Nested classes/interfaces inherited from interface com.threerings.io.Streamable

com.threerings.io.Streamable.Closure

Constructor Summary

ReflectiveDelta()
No-arg constructor for deserialization.

ReflectiveDelta(Object original, Object revised)
Creates a new reflective delta that transforms the original object into the revised object (both of which must be instances of the same class).

Method Summary

Object	apply(Object original) Applies this delta to the specified object.
boolean	isEmpty() Checks whether the delta is empty.
Delta	merge(Delta other) Merges this delta with another.
void	readObject(com.threerings.io.ObjectInputStream in) Custom read method.
String	toString()
void	writeObject(com.threerings.io.ObjectOutputStream out) Custom write method.

Methods inherited from class com.threerings.delta.Delta

checkDeltable, createDelta

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ReflectiveDelta

public ReflectiveDelta(Object original,
                       Object revised)

Creates a new reflective delta that transforms the original object into the revised object (both of which must be instances of the same class).

ReflectiveDelta

public ReflectiveDelta()

No-arg constructor for deserialization.

Method Detail

isEmpty

public boolean isEmpty()

Checks whether the delta is empty.

writeObject

public void writeObject(com.threerings.io.ObjectOutputStream out)
                 throws IOException

Custom write method.

Throws:

IOException

readObject

public void readObject(com.threerings.io.ObjectInputStream in)
                throws IOException,
                       ClassNotFoundException

Custom read method.

Throws:

IOException

ClassNotFoundException

apply

public Object apply(Object original)

Description copied from class: Delta

Applies this delta to the specified object.

Specified by:

apply in class Delta

Returns:

a new object incorporating the changes represented by this delta.

merge

public Delta merge(Delta other)

Description copied from class: Delta

Merges this delta with another.

Specified by:

merge in class Delta

Returns:

a new delta containing the changes included in both.

toString

public String toString()

Overrides:

toString in class Object