H2OpenHelper

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

Methods
	H2OpenHelper(Context context, String name, H2Database.CursorFactory factory, int version) Construct a new instance.
	H2OpenHelper(Context context, String name, H2Database.CursorFactory factory, int version) Construct a new instance. Parameters: context - the context to use name - the name of the database (use null for an in-memory database) factory - the cursor factory to use version - the expected database version
void	close() Close the connection.
void	close() Close the connection.
H2Database	getReadableDatabase() Open a read-only connection.
H2Database	getReadableDatabase() Open a read-only connection. Returns: a new read-only connection
H2Database	getWritableDatabase() Open a read-write connection.
H2Database	getWritableDatabase() Open a read-write connection. Returns: a new read-write connection
void	onCreate(H2Database db) This method is called when the database did not already exist.
void	onCreate(H2Database db) This method is called when the database did not already exist. Parameters: db - the connection
void	onOpen(H2Database db) This method is called after opening the database.
void	onOpen(H2Database db) This method is called after opening the database. Parameters: db - the connection
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.
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