Skip to main content

The buzz around APEX 4.0

During last weeks ODTUG Mike Hichwa presented APEX 4.0. This seemed to be the best attended session (apart from the 'real' keynotes) with over 200 attendees, so a lot of people wanted to know where their favorite development environment is heading!
Mike demoed some really cool new stuff - I will discuss these later on - and skipped (even more) nice features, with Declarative Tabular Forms, AJAX Client-Side Validations and Improved Error Handling make the top 3 of most interesting ones. See the pic of the slide for a complete list.

Websheets
There has been more blogging about Websheets last year, even with movies. But every time you see it live, it is amazing. Just copy data from a CSV, paste it into the APEX Builder and you're done! No Tables, Triggers, Primary Keys, etc needed: everything is automatically managed in APEX$xxx tables. You can update the data in line (like a Tabular Form), you can do mass update, create an LOV on the fly and add columns. You can also add Attachments, Notes and Tags to a record. The history is automagically kept, so auditing is out-of-the-box. You can define the properties of a column, move columns up or down, define column groups and even validations: all at runtime! So the (already thin) line between the Builder and the Runtime version of an application will get more vague.
But even Websheets will have its limitations: The Page Flow is limited and also the control over the Look & Feel is less exhaustive as with 'normal' APEX Pages: No use of Themes and Templates (more or less similar with the Interactive Reports).

Dynamic Actions
With Dynamic Actions you can Enable/Disable and Show/Hide Items dependent on the values of other Items. Things you nowadays need to code in (one line) of Javascript, will be declarative. That means not only less manual code, but - more important - easier maintenance, because these declarations will be stored in the APEX Repository and thus be available through APEX Dictionary Views.

Charts
In APEX 4.0 all charts will use the - much better looking - AnyCharts 5.1 version. Not quite clear if also the new chart types (like Gantts) can be declaratively created.

REST Web Services
In APEX 4.0 you also the use of REST Webservices is declarative. There was a short - but impressive - demo how to use Yahoo Maps within APEX.

Plug-Ins
Another main new feature are the Plug-Ins (previously called 'Custom Item Types'). You can compare these Plug-Ins to Widgets or - in the good old Oracle Forms environment - Pluggable Java Components (PJCs). Just register it within the Repository and you can use it wherever you like. The idea is that there should be a central 'Plug-In Registry' where every APEX Developer can register his Plug-In and make it available for download (free or for a fee). Oracle has no plans of managing / checking / controlling that registry due to legal restrictions (although just referencing source files didn't help Napster or The Pirate Bay ;-) ). The demo showed just registering / uploading a sql file containing the Plug-In (an Amazon style star rating) and the absurd easy way to use that Plug-In in a Form. Soon Patrick will be blogging about the technical details.

Improved Application Builder
Also the APEX Application Builder itself is revamped. The navigation is more intuitive, Interactive Reports are used all over the place and there is a general 'Search' function. That'll make developing with APEX even more productive...

Improved Interactive Reports
And even the, already fantastic, Interactive Reports got a make-over, with added functionality, like e-mail notification, compound filter expression (so you can use brackets and OR's in a filter) and - one long lasting request - shared saved reports!

Release Date??
As I can see for the search terms that hit my blog, "APEX 4.0 Release Date" is a very hot topic. Of course the Oracle APEX posse didn't gave a fixed date. And if they did, there is always the 'safe harbor'/disclaimer page as the first slide of the presentation. But in one of the presentations a 'date' was mentioned: End of 2009! So I will set my expectation to 2010Q1...

Comments

SydOracle said…
"But in one of the presentations a 'date' was mentioned: End of 2009! So I will set my expectation to 2010Q1... "
The Apex Statement of Direction says "new versions of Application Express will be released at least annually" and 3.2 was released in Feb 2009....
Thanks for sharing Roel.
Roel said…
@Gary,
But what is the defintion of 'a new version'? We'll sure get something (even if it is 3.2.1) before Feb 2010...
Roel

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