[ojb-users] n:m-mapping

[Juergen L. <jli...@un...>]

Hello,

im Tutorial 3 sind  diese Collection Descriptoren angegeben.
Wof=FCr steht <inverse_fk_descriptor_ids>999</inverse_fk_descriptor_ids>
Wohin verweist die 999?

In the Tutorial there is an exaple for n:m-mappings with the following =
Descriptors.
But what for is the entry <inverse_fk_descriptor_ids>999</inverse_fk_descri=
ptor_ids>
specially what does 999 mean?


<ClassDescriptor id=3D"1">
      <class.name>test.ojb.broker.Person</class.name>
...
<CollectionDescriptor id=3D"2">
         <cdfield.name>projects</cdfield.name>
         <items.class>test.ojb.broker.Project</items.class>
         <inverse_fk_descriptor_ids>999</inverse_fk_descriptor_ids>
         <indirection_table>PERSON_PROJECT</indirection_table>
         <fks_pointing_to_this_class>PERSON_ID</fks_pointing_to_this_class>=

         <fks_pointing_to_items_class>PROJECT_ID</fks_pointing_to_items_cla=
ss>
         <auto.retrieve>true</auto.retrieve>
         <auto.update>true</auto.update>
</CollectionDescriptor>
..
</ClassDescriptor>

<ClassDescriptor id=3D"1">
      <class.name>test.ojb.broker.Project</class.name>
...
  <CollectionDescriptor id=3D"2">
         <cdfield.name>persons</cdfield.name>
         <items.class>test.ojb.broker.Person</items.class>
         <inverse_fk_descriptor_ids>999</inverse_fk_descriptor_ids>
         <indirection_table>PERSON_PROJECT</indirection_table>
         <fks_pointing_to_this_class>PROJECT_ID</fks_pointing_to_this_class=
>
         <fks_pointing_to_items_class>PERSON_ID</fks_pointing_to_items_clas=
s>
         <auto.retrieve>true</auto.retrieve>
         <auto.update>true</auto.update>
      </CollectionDescriptor>
 </ClassDescriptor>

Thank for answering

Juergen Lippold