com.googlecode.flyway.core.migration
Class Migration

java.lang.Object
  com.googlecode.flyway.core.migration.Migration

All Implemented Interfaces:

java.lang.Comparable<Migration>

Direct Known Subclasses:

BaseMigration, InitMigration

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

A migration of a single version of the schema.

Author:

Axel Fontaine

Field Summary

protected java.lang.Integer	checksum The checksum of the migration.
protected java.lang.String	description The description for the migration history.
protected SchemaVersion	schemaVersion The target schema version of this migration.
protected java.lang.String	script The script name for the migration history.

Constructor Summary

Migration()

Method Summary

int	compareTo(Migration o)
java.lang.Integer	getChecksum()
java.lang.String	getDescription()
abstract MigrationType	getMigrationType()
java.lang.String	getScript()
SchemaVersion	getVersion()
abstract void	migrate(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate, DbSupport dbSupport) Performs the migration.

Methods inherited from class java.lang.Object

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

Field Detail

schemaVersion

protected SchemaVersion schemaVersion

The target schema version of this migration.

description

protected java.lang.String description

The description for the migration history.

script

protected java.lang.String script

The script name for the migration history.

checksum

protected java.lang.Integer checksum

The checksum of the migration. Sql migrations use a crc-32 checksum of the sql script. Java migrations use the SUID or a custom checksum.

Constructor Detail

Migration

public Migration()

Method Detail

getMigrationType

public abstract MigrationType getMigrationType()

Returns:

The type of migration (INIT, SQL or JAVA)

getChecksum

public java.lang.Integer getChecksum()

Returns:

The checksum of the migration.

getVersion

public SchemaVersion getVersion()

Returns:

The schema version after the migration is complete.

getDescription

public java.lang.String getDescription()

Returns:

The description for the migration history.

getScript

public java.lang.String getScript()

Returns:

The script name for the migration history.

compareTo

public int compareTo(Migration o)

Specified by:

compareTo in interface java.lang.Comparable<Migration>

migrate

public abstract void migrate(org.springframework.jdbc.core.JdbcTemplate jdbcTemplate,
                             DbSupport dbSupport)
                      throws org.springframework.dao.DataAccessException

Performs the migration.

Parameters:

jdbcTemplate - To execute the migration statements.

dbSupport - The support for database-specific extensions.

Throws:

org.springframework.dao.DataAccessException - Thrown when the migration failed.