Re: Read-only many to many

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Fri Jun 10 2005 - 12:16:14 EDT

  • Next message: Dhruti Ramani: "having two sep. foreign keys with same table"

    You need to check it on the side of each master table: "tapn_users" and
    "tapn_forum", and UNcheck for the join table.

    Andrus

    > Ok, so I need to have the "To Dep PK" checked in which, the Forum
    > table, or the join table? As you can see, still confused. :)
    >
    > But, I think I tried it both ways and either way it didnt make a
    > difference, still only got getModerators and no add or remove methods
    > with it. (in either case, checking one or the other nothing in the
    > class changed. Should I recreate the relationships in the classes
    > after I check the boxes?)
    >
    > I think the biggest confusion has to do with the "TO" in the
    > description. Just taking that out would be better, "Dependent PK"
    > makes more sense to me at least. Or even, "Dependent ON PK" or
    > something like that.
    >
    > -Nick
    >
    > On 6/10/05, Andrus Adamchik <andru..bjectstyle.org> wrote:
    >> Nick,
    >>
    >> "to dep pk" has to be the other way around. What it means is that MASTER
    >> table propagates its PK to its DEPENDENT table. "tapn_users" and
    >> "tapn_forum" are both masters and "tapn_fmoderators" is a dependent
    >> table.
    >>
    >> BTW, if anybody can suggest a better name for this flag (or maybe a
    >> suggestion how to improve UI that sets it), please post your
    >> suggestions.
    >> While "to dep pk" is technically correct, it does cause confusion.
    >>
    >> Andrus
    >>
    >> > Just tried it, and nothing.
    >> >
    >> > Attaching the map file.
    >> >
    >> > Thanks again,
    >> > -Nick
    >> >
    >> > On 6/10/05, Andrus Adamchik <andru..bjectstyle.org> wrote:
    >> >> Hi Nick,
    >> >>
    >> >> Do you have "To Dep PK" checked for these two relationships:
    >> >>
    >> >> Forum->join table
    >> >> User -> join table
    >> >>
    >> >> If this doesn't help, please send your *.map.xml file - it may give
    >> some
    >> >> clues.
    >> >>
    >> >> Andrus
    >> >>
    >> >> > Ok, so I'm a newb to Cayenne and this has probably already been
    >> >> > answered, but since i can't find a searchable list archive
    >> anywhere,
    >> >> > here goes.
    >> >> >
    >> >> > I've got a many-to-many relationship I'm trying to build and it
    >> looks
    >> >> > like everything is working, but the classes generated only let me
    >> get
    >> >> > the list and not add to them. I've got a join table and
    >> relationship
    >> >> > to both ids and all the chained joins appear to be setup correctly
    >> in
    >> >> > the objects, but still no love.
    >> >> >
    >> >> > What am I missing to be able add to the join table? I've tried just
    >> >> > about every combo I can come up with, but there must be something.
    >> >> > BTW, this is with 1.2M4.
    >> >> >
    >> >> > This is a simple mapping:
    >> >> > Users can be moderators of several Forums
    >> >> > Forums can have several User moderators
    >> >> >
    >> >> > Join table with userId and forumId
    >> >> > user relationship going from the join table userId to user table Id
    >> >> > same for forums.
    >> >> >
    >> >> > Chained relations
    >> >> > Forum->join table -> user table
    >> >> > User -> join table -> forum table
    >> >> >
    >> >> > Thanks for the help!
    >> >> > -Nick
    >> >> >
    >> >>
    >> >>
    >> >
    >>
    >>
    >



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