Setting up a project where ADO only needs to call procedures, no tables?

I am not sure if JDeveloper is the right tool, I'm just trying to prototype something to see if it would work.
Goal: Upload files into an item content region in Oracle Portal.
Using JDeveloper, It is pretty easy to upload file. Once I have the uploaded data, I would think that it would be pretty simple to call Portal APIs to upload_blob and add_item to get the uploaded file in an item content list.
I tried this with ApEx, but the problem being that ApEx was on a different database instance, and trying to pass blob_content over a database link, well, didn't work for me.
The key is a create a quick, simple application that just performs a file upload, then adds the content to Oracle Portal calling portal API's. Giving the end user an admin login to modify page content isn't really a good option. (laughing)
JDeveloper seems to be a good choice for this task, but I am not sure how to setup the ADF components. I need access to calling the pl/sql procedures and API that are in the portal schema.
So does anyone have some guidance on setting up ADF to do this?
Thanks, Ken

Shay,
I will work with the first example link.
The question: What is the correct way to use ADF components if the only thing I want is the ability to call stored procedures. In order to upload files, I would still need at least a view with transient objects that I can use to call the pl/sql procedures.
Thanks for the links! Ken

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