Hi Bernd,
First of all, you don't need to do the nextID / setID explicitly.
addRecord() does that for you, so when you do this:
>Area r = (Area)t.addRecord();
r already has the next id, from the maxIDs table. (For those who are
interested: grabbing the next id always occurs in a separate
transaction and commits immediately, thus guaranteeing that you never
get duplicate IDs. This does mean, however, that if you run
addRecord() but don't save() it, the id doesn't get reused).
Even so, I'm not sure why you're getting a NullPointerException...
can you send the full stack trace? (Be sure to do "setenv
JAVA_COMPILER none" or the equivalent on your system, otherwise you
won't get line numbers in the trace).
Thanks,
-David
>I started with Town a few days ago but couldn't get any record beeing
>saved to my database until now. If you have a look at the following
>code, everithing works fine until the r.save()-command. This causes a
>NullPointerException. Is there any special thing to take care of when
>saving records?
>
>Note, that the connection to the database and to the tables are all
>right, the permissions are, too.
>
> Table t = csdb.AreaTable();
> Table et = csdb.EmployeesTable();
>
>Area r = (Area)t.addRecord();
>
>Employees e = (Employees)et.selectOne("name = 'Richter'");
>
>r.setFachgebiet("POM"); // Fachgebiet
>int dummy = csdb.nextID("Area");
>r.setId(new Integer(dummy)); // neue ID
>r.setEmployees(e); // neue Referenz auf Sachbearbeiter
>
> r.save(); // -> causes NullPointerException !!
>
>Thanks
>Bernd
>
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>Bernd Adamowicz
>Softwareentwicklung
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