ollie

Class Migration

java.lang.Object

ollie.Migration

All Implemented Interfaces:

java.lang.Comparable<Migration>

public abstract class Migration
extends java.lang.Object
implements java.lang.Comparable<Migration>

Migrations execute SQL statements when upgrading from one database version to another. Migrations are sorted by version number and executed in that order using migrations with versions higher than the current database version number, and excluding all those with version numbers at or below the current database version number.

Constructor Summary

Constructors

Constructor and Description
Migration()

Method Summary

Modifier and Type	Method and Description
int	compareTo(Migration migration)
abstract java.lang.String[]	getStatements() Returns the SQL statements which are to be executed in order to perform this migration.
abstract int	getVersion() Returns the database version for which to apply this migration.

Methods inherited from class java.lang.Object

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

Constructor Detail

Migration

public Migration()

Method Detail

getVersion

public abstract int getVersion()

Returns the database version for which to apply this migration.

Returns:

The database version.

getStatements

public abstract java.lang.String[] getStatements()

Returns the SQL statements which are to be executed in order to perform this migration.

Returns:

The SQL statements.

compareTo

public int compareTo(Migration migration)

Specified by:

compareTo in interface java.lang.Comparable<Migration>