io.ebean.annotation

Annotation Type DbMigration

@Retention(value=RUNTIME)
 @Target(value=FIELD)
 @Repeatable(value=DbMigration.List.class)
public @interface DbMigration

Annotation to specify details for DDL & Migration-generation. (e.g. defaults/renames/...) This annotation is EXPERMIENTAL and may change.

Author:

Roland Praml, FOCONIS AG

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
Platform[]	platforms Specific platforms this migration change applies to.
String[]	postAdd DdlScript that will be executed after the 'add' command.
String[]	postAlter DdlScript that will be executed after the 'alter' command
String[]	preAdd DdlScript that will be executed before the 'add' command
String[]	preAlter DdlScripts that will be executed before the 'alter' command.

Element Detail

preAlter

public abstract String[] preAlter

DdlScripts that will be executed before the 'alter' command.

You may write a custom update routine here. If you do not specify an SQL here, and this will alter the table to a non-null column, ebean will autogenerate a statement from default value like this:

UPDATE table SET column = 'foo' WHERE column IS NULL

Default:

{}

postAlter

public abstract String[] postAlter

DdlScript that will be executed after the 'alter' command

Default:

{}

preAdd

public abstract String[] preAdd

DdlScript that will be executed before the 'add' command

Default:

{}

postAdd

public abstract String[] postAdd

DdlScript that will be executed after the 'add' command. You may write certain update scripts here.

Default:

{}

platforms

public abstract Platform[] platforms

Specific platforms this migration change applies to.

Default:

{}