[odb-users] Pointer as a member of Class

[nima chavooshi]

Hi Boris,

Thanks a lot for your attention. About improvement, I agree with you, but
this is only a test program.What I am trying in my main program is :

Person * PersonObject;
PersonObject = new Person(30,"Nima","Chavoshi","Tehran","09127907641");

<removed some codes>
auto_ptr<database> db (create_database (argc, argv));
transaction t (db->begin ());
t.commit ();
<removed some codes>

About including contact header file to person, I must say, yes. it is
already included.
Regarding the commands I executed:

 odb -d mysql --generate-query --generate-schema person.h
 odb -d mysql --generate-query --generate-schema contact.h


Best Regards,
Nima Chavoshi


On Tue, Sep 16, 2014 at 8:18 PM, Boris Kolpackov <boris at codesynthesis.com>
wrote:

> Hi Nima,
>
> nima chavooshi <nima0102 at gmail.com> writes:
>
> > I think I could not explain what I expect. Please kindly see my classes:
>
> You are still not telling me what you do and when you expect! I
> see your classes and there is nothing particularly wrong with
> them (there is a lot of room for improvement from the "good
> C++" point of view, but that's another story).
>
> So based on your previous email I am guessing what you are trying
> to do is something like this:
>
> Person p;
> p.ContactPerson = new Contact;
>
> db.persist (p);
>
> And expect this call to persist() to store both Person and
> Contact in the database. If so, then re-read my previous
> reply, which sums up to: "this is not how ODB works".
> Instead, you need to do:
>
> db.persist (p.ContactPerson);
> db.persist (p);
>
>
> > And also I doubt about generated schema, because there is no any
> > "REFERENCE" keyword in schema then there is no defined relationship
> > between 2 tables.
>
> There should be a foreign key defined in the table for Person. Make
> sure also that you #include your Contact header into Person header.
> If that doesn't work, tell me exactly what is wrong. And I mean
> exactly: exact command lines that you use to invoke ODB, the
> schema that you get, etc.
>
> Boris
>