Concrete Table Inheritance implemented in Doctrine copies only structure of parent table. This behavior allows to have a data replication.
To implement it, the extended table need to have a "descendant_column". The inherited tables must have the Concrete Table Inheritance option setted.
In the following example, the article and video tables use this behavior to inherit the columns of their parent table (content):
Content:
tableName: content
columns:
title:
type: varchar(50)
descendant_class:
type: varchar(50)
Article:
actAs:
DataInheritance: ~
tableName: article
inheritance:
extends: Content
type: concrete
columns:
body:
type: varchar(100)
Video:
actAs:
DataInheritance: ~
tableName: article
inheritance:
extends: Content
type: concrete
columns:
resource_link:
type: varchar(100)
Every time you save an Article or a Video object, a copy of the title and category_id columns is saved in a Content object.
MIT Licence
- version 0.1 - 2010-11-30, heristop