Skip to main content

APEX 5 New Supporting Objects Features

In the current version of APEX the Supporting Objects feature is undervalued. You can create (sort of) self installing applications with it, but it is not widely used. Why? Because people don't realy know the feature or people do and experience lack of functionality. In both cases : Check out the functionality of APEX 5!
When you have scripts for creating tables, packages etc., in the current version you have to manually keep those install scripts in sync with "reality". You have to do it manually - so it'll go wrong sooner or later. But in APEX 5 you can sync your scripts with the click of a button. Well, in fact two clicks: one for the check box and one for the button. See the animation below.
So when you click "Refresh Checked" your script will be recreated, reflecting the current situation of your database.
Well how does that work? If you click on the pencil icon and then navigate to the "Script Editor' tab, you'll see that the script is associated with objects. You can add objects here or remove the association - your script will be recreated automagically. Please notice you can't add your own code in these scripts because it'll be overwritten.
And to make it even easier for you - and eliminating the need to run APEX in Developer Mode in the target environment - you can now enable "auto install" of Supporting Objects. Thus Supporting Objects will be installed even from withing SQL*Plus or SQLDeveloper!
When you export an application you can set the corresponding preference like below.
One nice enhancement request maybe: I would like to have a "Refresh Checked" option on export as well! So I can refresh all my source code upon export ....

 So these are a few more reasons to use Supporting Objects in your next APEX5-project!

Comments

Popular posts from this blog

apex_application.g_f0x array processing in Oracle 12

If you created your own "updatable reports" or your custom version of tabular forms in Oracle Application Express, you'll end up with a query that looks similar to this one: then you disable the " Escape special characters " property and the result is an updatable multirecord form. That was easy, right? But now we need to process the changes in the Ename column when the form is submitted, but only if the checkbox is checked. All the columns are submitted as separated arrays, named apex_application.g_f0x - where the "x" is the value of the "p_idx" parameter you specified in the apex_item calls. So we have apex_application.g_f01, g_f02 and g_f03. But then you discover APEX has the oddity that the "checkbox" array only contains values for the checked rows. Thus if you just check "Jones", the length of g_f02 is 1 and it contains only the empno of Jones - while the other two arrays will contain all (14) rows. So for

Filtering in the APEX Interactive Grid

Remember Oracle Forms? One of the nice features of Forms was the use of GLOBAL items. More or less comparable to Application Items in APEX. These GLOBALS where often used to pre-query data. For example you queried Employee 200 in Form A, then opened Form B and on opening that Form the Employee field is filled with that (GLOBAL) value of 200 and the query was executed. So without additional keys strokes or entering data, when switching to another Form a user would immediately see the data in the same context. And they loved that. In APEX you can create a similar experience using Application Items (or an Item on the Global Page) for Classic Reports (by setting a Default Value to a Search Item) and Interactive Reports (using the  APEX_IR.ADD_FILTER  procedure). But what about the Interactive Grid? There is no APEX_IG package ... so the first thing we have to figure out is how can we set a filter programmatically? Start with creating an Interactive Grid based upon the good old Employ

Stop using validations for checking constraints !

 If you run your APEX application - like a Form based on the EMP table - and test if you can change the value of Department to something else then the standard values of 10, 20, 30 or 40, you'll get a nice error message like this: But it isn't really nice, is it? So what do a lot of developers do? They create a validation (just) in order to show a nicer, better worded, error message like "This is not a valid department".  And what you then just did is writing code twice : Once in the database as a (foreign key) check constraint and once as a sql statement in your validation. And we all know : writing code twice is usually not a good idea - and executing the same query twice is not enhancing your performance! So how can we transform that ugly error message into something nice? By combining two APEX features: the Error Handling Function and the Text Messages! Start with copying the example of an Error Handling Function from the APEX documentation. Create this function