RoomDatabase.Callback

Added in 2.0.0

Kotlin |Java

Callback for RoomDatabase

Summary

Public constructors
`Callback()`	Cmn
`Callback()`	android

Public functions
`open Unit`	`onCreate(connection: SQLiteConnection)` Called when the database is created for the first time.	Cmn android
`open Unit`	`onDestructiveMigration(connection: SQLiteConnection)` Called after the database was destructively migrated.	Cmn android
`open Unit`	`onOpen(connection: SQLiteConnection)` Called when the database has been opened.	Cmn android

Cmn

Added in 2.0.0

Callback()

android

Added in 2.0.0

Callback()

Cmn android

open fun onCreate(connection: SQLiteConnection): Unit

Called when the database is created for the first time.

This function called after all the tables are created.

Parameters
`connection: SQLiteConnection`	The database connection.

Cmn android

open fun onDestructiveMigration(connection: SQLiteConnection): Unit

Called after the database was destructively migrated.

Parameters
`connection: SQLiteConnection`	The database connection.

Cmn android

open fun onOpen(connection: SQLiteConnection): Unit

Called when the database has been opened.

Parameters
`connection: SQLiteConnection`	The database connection.