Aha... The screenshot problem was related to the site publishing
problem - the latest images weren't pushed to the live site. So while
I am working on straightening that out, you can use the offline
tutorial that can be found in the docs included in the Cayenne
download (the start page is "cayenne-2.0.x/doc/index.html").
Andrus
On Oct 26, 2008, at 9:15 AM, Andrus Adamchik wrote:
> Hi Matt,
>
> On Oct 25, 2008, at 6:33 PM, Matt Crouch wrote:
>> I have several questions about the cayenne-tutorial project and
>> CayenneModeler
>>
>> 1. I'm having some problems with the UI in CayenneModeler. When
>> adding
>> an attribute, I tab over to "Type" and expect that I can select using
>> arrow keys or typing. If I type a letter, the dropdown list arrow
>> appears, but I can't change it's value. Is this normal?
>>
>> 2. In the DbRelationship Info dialog box I can't tab among inputs. I
>> can tab to "Reverse Relationship" and back, but no further -- i.e.
>> only the TextFields. If I do tab further, I can't get back inside
>> them.
>>
>> Those aren't that important, just annoying as I can't stand having to
>> use the mouse for everything.
>
> Fair enough. Even in substantially reworked and improved
> CayenneModeler 3.0M5 (which is coming out soon), tabbing behavior is
> far from ideal. Something we'll need to improve upon.
>
>
>> 3. There seem to be inconsistencies in the field naming in the
>> tutorial. The data model at the top
>> (http://cayenne.apache.org/doc20/tutorial-object-relational-mapping.data/database-schema.jpg
>> )
>> indicates that ARTIST's primary key is called "ARTIST_ID", but the
>> text says
>>
>> "Let's rename it to ID, make it an INTEGER and make it a PK:"
>>
>> The graphic immediately below this also indicates that the field is
>> actually ARTIST_ID
>>
>> I didn't mind this and assumed a simple typo in the text, but
>> GALLERY's primary key is just called "ID", for which see the "Repeat
>> this procedure for PAINTING and GALLERY entities." graphic.
>
>> 4. The result of the above is that you can't actually do the "Mapping
>> Database Relationships" section. If my ARTIST pkey is called
>> ARTIST_ID, that field is only available as a Source, not a target,
>> for
>> the relationship
>>
>> After experimenting a bit, I discovered that if I ignore the graphics
>> and call the field ID, I can get the result from this section -- but
>> *only if I create the ARTIST_ID field in the
>> PAINTING entity first.
>>
>> I was inclined to think that the text simply forgot to say "make
>> additional attributes to match the data model above" or something,
>> but
>> in this case the primary keys would be called ARTIST_ID, PAINTING_ID,
>> etc. rather than just ID
>>
>> I find this pretty frustrating. The tut says I should repeat these
>> steps for other relationships, but I can't tell if these were done
>> right, because of the inconsistencies.
>>
>> M
>
> The 3.0 version of the tutorial has the DB schema diagram correct.
> "Repeat" means map all columns from the schema:
>
> http://cayenne.apache.org/doc/tutorial-object-relational-mapping.html
>
> Thanks for sharing the problems that you had - let me replace the
> broken Modeler screenshots and clarify some points in the text.
>
> Andrus
>
>
This archive was generated by hypermail 2.0.0 : Sun Oct 26 2008 - 09:27:34 EDT
