RoomDatabase.Callback

Artifact: androidx.room:room-runtime

View Source

Added in 2.0.0

---

Kotlin |Java

public abstract class RoomDatabase.Callback

---

Callback for RoomDatabase

Summary

Public constructors
Callback()

Public methods
void	onCreate(@NonNull SQLiteConnection connection) Called when the database is created for the first time.
void	onDestructiveMigration(@NonNull SQLiteConnection connection) Called after the database was destructively migrated.
void	onOpen(@NonNull SQLiteConnection connection) Called when the database has been opened.

Public constructors

Callback

Added in 2.0.0

public Callback()

Public methods

onCreate

Added in 2.7.0-alpha10

public void onCreate(@NonNull SQLiteConnection connection)

Called when the database is created for the first time.

This function called after all the tables are created.

Parameters
@NonNull SQLiteConnection connection	The database connection.

onDestructiveMigration

Added in 2.7.0-alpha10

public void onDestructiveMigration(@NonNull SQLiteConnection connection)

Called after the database was destructively migrated.

Parameters
@NonNull SQLiteConnection connection	The database connection.

onOpen

Added in 2.7.0-alpha10

public void onOpen(@NonNull SQLiteConnection connection)

Called when the database has been opened.

Parameters
@NonNull SQLiteConnection connection	The database connection.