Re: [ojb-users] n:m-mapping

[Thomas M. <tho...@ho...>]

Hi Juergen,

Juergen Lippold wrote:

 > Hello,
 >
 > im Tutorial 3 sind  diese Collection Descriptoren angegeben.
 > Wof=FCr steht <inverse_fk_descriptor_ids>999</inverse_fk_descriptor_id=
s>
 > Wohin verweist die 999?
 >
 > In the Tutorial there is an exaple for n:m-mappings with the=20
following Descriptors.
 > But what for is the entry=20
<inverse_fk_descriptor_ids>999</inverse_fk_descriptor_ids>
 > specially what does 999 mean?
 >


That's one of the "dark spots" on the repository.dtd. It just means "no
descriptor at all" but the parser requires to have an int in this place.


I hope to provide a polished version of the repository.dtd soon. Please
ignore this 999 for the time being.

Thomas


 >
 > <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>
 >=20
<fks_pointing_to_this_class>PERSON_ID</fks_pointing_to_this_class>
 >=20
<fks_pointing_to_items_class>PROJECT_ID</fks_pointing_to_items_class>
 >          <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>
 >=20
<fks_pointing_to_this_class>PROJECT_ID</fks_pointing_to_this_class>
 >=20
<fks_pointing_to_items_class>PERSON_ID</fks_pointing_to_items_class>
 >          <auto.retrieve>true</auto.retrieve>
 >          <auto.update>true</auto.update>
 >       </CollectionDescriptor>
 >  </ClassDescriptor>
 >
 > Thank for answering
 >
 > Juergen Lippold
 >
 >
 >
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 >
 >
 >