http://ebean-orm.github.io/: For open source java artifacts.
  • Rob Bygrave 
package io.ebeaninternal.dbmigration.ddlgeneration;

import io.ebeaninternal.dbmigration.migration.AddColumn;
import io.ebeaninternal.dbmigration.migration.AlterColumn;
import io.ebeaninternal.dbmigration.migration.DropColumn;

import java.io.IOException;


Write DDL for AddColumn , DropColumn or AlterColumn.

/**
 * Write DDL for AddColumn , DropColumn or AlterColumn.
 */
public interface ColumnDdl {

  
Write the add column change.

/**
   * Write the add column change.
   */
  void generate(DdlWrite writer, AddColumn addColumn) throws IOException;

  
Write the drop column change.

/**
   * Write the drop column change.
   */
  void generate(DdlWrite writer, DropColumn dropColumn) throws IOException;

  
Write the alter column changes.

/**
   * Write the alter column changes.
   */
  void generate(DdlWrite writer, AlterColumn alterColumn) throws IOException;
}