org.h2.android

Class H2OpenHelper

java.lang.Object

org.h2.android.H2OpenHelper

public abstract class H2OpenHelper
extends java.lang.Object

This helper class helps creating and managing databases. A subclass typically implements the "on" methods.

Method Summary

Modifier and Type	Method and Description
void	close() Close the connection.
H2Database	getReadableDatabase() Open a read-only connection.
H2Database	getWritableDatabase() Open a read-write connection.
abstract void	onCreate(H2Database db) This method is called when the database did not already exist.
void	onOpen(H2Database db) This method is called after opening the database.
abstract void	onUpgrade(H2Database db, int oldVersion, int newVersion) This method is called when the version stored in the database file does not match the expected value.

Methods inherited from class java.lang.Object

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

Method Detail

close

public void close()

Close the connection.

getReadableDatabase

public H2Database getReadableDatabase()

Open a read-only connection.

Returns:

a new read-only connection

getWritableDatabase

public H2Database getWritableDatabase()

Open a read-write connection.

Returns:

a new read-write connection

onCreate

public abstract void onCreate(H2Database db)

This method is called when the database did not already exist.

Parameters:

db - the connection

onOpen

public void onOpen(H2Database db)

This method is called after opening the database.

Parameters:

db - the connection

onUpgrade

public abstract void onUpgrade(H2Database db,
                               int oldVersion,
                               int newVersion)

This method is called when the version stored in the database file does not match the expected value.

Parameters:

db - the connection

oldVersion - the current version

newVersion - the expected version