com.github.difflib.patch

Class Delta<T>

java.lang.Object

com.github.difflib.patch.Delta<T>

Direct Known Subclasses:

ChangeDelta, DeleteDelta, InsertDelta

public abstract class Delta<T>
extends Object

Describes the delta between original and revised texts.

Author:

Dmitry Naumenko

Constructor Summary

Constructors

Constructor and Description
Delta(DeltaType deltaType, Chunk<T> original, Chunk<T> revised) Construct the delta for original and revised chunks

Method Summary

Modifier and Type	Method and Description
abstract void	applyTo(List<T> target) Applies this delta as the patch for a given target
boolean	equals(Object obj)
Chunk<T>	getOriginal()
Chunk<T>	getRevised()
DeltaType	getType()
int	hashCode()
abstract void	restore(List<T> target) Cancel this delta for a given revised text.
void	verify(List<T> target) Verifies that this delta can be used to patch the given text.

Methods inherited from class java.lang.Object

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

Constructor Detail

Delta

public Delta(DeltaType deltaType,
             Chunk<T> original,
             Chunk<T> revised)

Construct the delta for original and revised chunks

Parameters:

original - Chunk describing the original text. Must not be null.

revised - Chunk describing the revised text. Must not be null.

Method Detail

verify

public void verify(List<T> target)
            throws PatchFailedException

Verifies that this delta can be used to patch the given text.

Parameters:

target - the text to patch.

Throws:

PatchFailedException - if the patch cannot be applied.

applyTo

public abstract void applyTo(List<T> target)
                      throws PatchFailedException

Applies this delta as the patch for a given target

Parameters:

target - the given target

Throws:

PatchFailedException

restore

public abstract void restore(List<T> target)

Cancel this delta for a given revised text. The action is opposite to patch.

Parameters:

target - the given revised text

getType

public final DeltaType getType()

getOriginal

public Chunk<T> getOriginal()

Returns:

The Chunk describing the original text.

getRevised

public Chunk<T> getRevised()

Returns:

The Chunk describing the revised text.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object