Re: extent mapping (was: another JOIN question)

[Charles N. Harvey III]

Phil,
This is where I found it:
http://db.apache.org/ojb/tutorial3.html#Mapping%20Classes%20on%20Multiple%20Joined%20Tables

One major subsection below Extents and Polymorphism.  "Mapping 
Inheritance Heirarchies"
is the section it is in.

Charlie



Phil Warrick wrote:

Hi all,

While reading this thread, I came across something that looks like an 
improved way to map extents.  (reference-descriptor name - "super" 
etc.) Have I been sleeping while this development took place?  This 
seems to be undocumented.

Phil

<class-descriptor
      class="SubObject"
      table="SUB_OBJECT">
  <field-descriptor
          name="oid"
          column="OID"
          jdbc-type="INTEGER"
          primarykey="true"
          access="anonymous"/>
  <reference-descriptor
          name="super"
          class-ref="TheObject"
          auto-retrieve="true"
          auto-update="true"
          auto-delete="true">
      <foreignkey
              field-ref="oid"/>
  </reference-descriptor>
  <field-descriptor
          name="someString"
          column="some_string"
          jdbc-type="VARCHAR"
          access="readwrite"/>
</class-descriptor>
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