You can use apex_export.get_application to create Apex exports from pl/sql.
This works fine, but as with the APEXExport java utility
, not everything is exported by default
. Most options are set to false by default, so you should check carefully which ones you need.
The API Reference
gives a simple example, but since I always seem to forget how to use apex_t_varchar2 types (having to use apex_string.push just doesn't seem logical somehow), I have included my own one here.