Showing posts from February, 2010

Tabular Forms on Complex Views - using INSTEAD OF Triggers

Creating tabular forms in Apex is relative straight forward. One gets fully generated, instant insert/update/delete functionality. Unfortunately (for the form developer), tables are usually part of a more or less complex data model, which is optimized for data storage, rather then for form-layout. Well, Apex offers some possibilities to the developer to enable tabular forms beyond 1:1 table based. Collections One alternative is to create your tabular form using the Apex Collection API. There is a good article on Martin Giffy D'Souza’s blog describing this technique. This collection-approach basically pre-fetches data into a (PL/SQL) collection from a query/cursor. The “collected” data will be displayed in the form. An on-submit page process will store the data submitted from the form into the collection. After this you can perform some validation before submitting the data to table(s) in an on-submit page process. Database Views Well, I favor an approach that keeps the