package io.ebean.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Repeatable;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

Annotation to specify details for DDL & Migration-generation. (e.g. defaults/renames/...)
This annotation is EXPERMIENTAL and may change.
Author:
Roland Praml, FOCONIS AG/**
 * Annotation to specify details for DDL & Migration-generation. (e.g. defaults/renames/...)
 * This annotation is <b>EXPERMIENTAL</b> and may change.
 *
 * @author Roland Praml, FOCONIS AG
 */
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
@Repeatable(DbMigration.List.class)
public @interface DbMigration {

  
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

/**
   * DdlScripts that will be executed before the 'alter' command.
   * <p>
   * 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:
   * <pre>
   * UPDATE table SET column = 'foo' WHERE column IS NULL
   * </pre>
   */
  String[] preAlter() default {};

  
DdlScript that will be executed after the 'alter' command
/**
   * DdlScript that will be executed after the 'alter' command
   */
  String[] postAlter() default {};

  
DdlScript that will be executed before the 'add' command
/**
   * DdlScript that will be executed before the 'add' command
   */
  String[] preAdd() default {};

  
DdlScript that will be executed after the 'add' command.
You may write certain update scripts here.
/**
   * DdlScript that will be executed after the 'add' command.
   * You may write certain update scripts here.
   */
  String[] postAdd() default {};

  
Specific platforms this migration change applies to.
/**
   * Specific platforms this migration change applies to.
   */
  Platform[] platforms() default {};

  
Repeatable support for DbMigration. /**
   * Repeatable support for {@link DbMigration}.
   */
  @Target({ElementType.FIELD})
  @Retention(RetentionPolicy.RUNTIME)
  @interface List {

    DbMigration[] value() default {};
  }
}