Module page.codeberg.friedolyn.Friedolyn

Package page.codeberg.friedolyn.util

Record Class Changes<Type>

java.lang.Object

java.lang.Record

page.codeberg.friedolyn.util.Changes<Type>

Type Parameters:

Type - The class of the object that has changed.

Record Components:

oldVersion - Contains those fields of the old version that have changed in the newVersion().

newVersion - Contains those fields of the new version that have changed in the oldVersion().

unchanged - Contains those fields that are the same in both versions.

public record Changes<Type>(Type oldVersion, Type newVersion, Type unchanged)
extends Record

Represents updates between two versions of an object.

Field Summary

Fields

Modifier and Type	Field	Description
private final Type	newVersion	The field for the newVersion record component.
private final Type	oldVersion	The field for the oldVersion record component.
private final Type	unchanged	The field for the unchanged record component.

Constructor Summary

Constructors

Constructor	Description
Changes(Type oldVersion, Type newVersion, Type unchanged)	Creates an instance of a Changes record class.

Method Summary

Modifier and Type	Method	Description
final boolean	equals(Object o)	Indicates whether some other object is "equal to" this one.
final int	hashCode()	Returns a hash code value for this object.
Type	newVersion()	Returns the value of the newVersion record component.
Type	oldVersion()	Returns the value of the oldVersion record component.
final String	toString()	Returns a string representation of this record class.
Type	unchanged()	Returns the value of the unchanged record component.

Methods inherited from class java.lang.Object

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

Field Details

oldVersion

@NonNull
private final Type oldVersion

The field for the oldVersion record component.

newVersion

@NonNull
private final Type newVersion

The field for the newVersion record component.

unchanged

@NonNull
private final Type unchanged

The field for the unchanged record component.

Constructor Details

Changes

public Changes(@NonNull
 Type oldVersion,
 @NonNull
 Type newVersion,
 @NonNull
 Type unchanged)

Creates an instance of a Changes record class.

Parameters:

oldVersion - the value for the oldVersion record component

newVersion - the value for the newVersion record component

unchanged - the value for the unchanged record component

Method Details

toString

public final String toString()

Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.

Specified by:

toString in class Record

Returns:

a string representation of this object

hashCode

public final int hashCode()

Returns a hash code value for this object. The value is derived from the hash code of each of the record components.

Specified by:

hashCode in class Record

Returns:

a hash code value for this object

equals

public final boolean equals(Object o)

Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).

Specified by:

equals in class Record

Parameters:

o - the object with which to compare

Returns:

true if this object is the same as the o argument; false otherwise.

oldVersion

@NonNull
public Type oldVersion()

Returns the value of the oldVersion record component.

Returns:

the value of the oldVersion record component

newVersion

@NonNull
public Type newVersion()

Returns the value of the newVersion record component.

Returns:

the value of the newVersion record component

unchanged

@NonNull
public Type unchanged()

Returns the value of the unchanged record component.

Returns:

the value of the unchanged record component