Hi *,
I'm trying to get inheritance working and can't find a solution in the
archives and the inheritance guide.
What I want to achieve is something like this:
I have an abstract class Element which defines a lot of attributes. This
class is extended by a few other concrete classes that define additional
attributes. So I define the abstract class like this:
<table name="element" abstract="false" description="the abstract
document element">
<column
name="id"
required="true"
primaryKey="true"
type="INTEGER"
description="Id"/>
<column
name="document_id"
required="true"
type="INTEGER"
description="reference to the corresponding document"/>
[snip more attributes]
<column
name="class_type"
inheritance="single"
type="VARCHAR"
size="10">
<inheritance key="text" class="TextElement"/>
</column>
<foreign-key foreignTable="document" onDelete="cascade">
<reference local="document_id" foreign="id"/>
</foreign-key>
</table>
And the concrete subclass like this:
<table name="text_element" abstract="false" description="element to
represent text content">
<column
name="content"
required="true"
type="VARCHAR"
description="the text content"
/>
</table>
What happens is, as far as I can see, the generator generates classes
for TextElement/TextElementPeer and afterwards overwrites TextElement
with one that extends Element without the additional attribute. Is it
possible to make inheritance with additional attributes work? Do I have
to declare the attributes in Element and tag them as belonging to
TextElement somehow?
Any hint is appreciated,
kind regards
Florian
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* Florian Hopf
* Synyx GmbH & Co. KG
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