Skip to main content

OOW Suggest-a-Session : Top Voted Sessions

During the period the Suggest-a-Session for Oracle Open World 2011 on Oracle Mix is open, you can't see the rank of the (or your!) proposal. Only by accessing every proposal and writing down the number of votes, it is possible to get an idea of the rank of a proposed session. This is quite a cumbersome exercise...so why not automate this? Heavily inspired by Wilfred van der Deijl, who wrote a Java program to do that, I created a similar functionality using just the Oracle Database. Who needs Java after all ;-)
The first set up requires setting the ACL right for using utl_http. Next I had to import the certificate Oracle is using for that site into the Oracle Wallet Manager and then create a function that retrieves all proposals and filters the title, presenter and the number of votes. This takes a while, so I dumped the results in a table. 
Next I uploaded the results to my workspace on apex.oracle.com (couldn't run the procedure from that site as the ACL there prevents the use of utl_http) and created a Report and a Chart on top of it. So now you can see your rank (I will - try to - update the data every day).

The link to the page is : http://apex.oracle.com/pls/apex/f?p=41715:80
As you can see the session Marco and I proposed still needs some votes, so when you like this overview, please vote for our session as a "thank you": https://mix.oracle.com/events/oow11/proposals/10930-xfiles-the-apex-4-version-the-truth-is-in-there !
2 comments

Popular posts from this blog

Showing a success message after closing a modal dialog

APEX 5 comes with Modal Dialogs out of the box. Very neat. Especially for adding and changing data. And to minimise the number of time a user has to click, it could be useful to add a "Close Dialog" process after the actual data processing. When the data processing fails, the Dialog stays on top showing the error. When data processing runs fine, the Dialog is closed ... without any confirmation. And this might be scary for a shaky user.

So how can we provide the user some feedback? On Page 4 of the Sample Dialog Application you can see one solution: up on a Dialog Closed Event on the parent page it does a redirect to refresh the parent page appending the success message of the "Close Dialog" process. This has two drawbacks. First, it probably refreshes more than necessary. And second, if you're using multiple layers of dialogs (dialogs that open other dialogs) the message appears in the "parent dialog".
As an alternative you could follow these steps: 1…

A review of APEX World 2017 - Day 1

Last week the SS Rotterdam was the beautiful location of the largest gathering of APEX Developers worldwide. With around 380 (!) attendees a new high was set. And they came from all over the world : I spotted people from The Netherlands, Belgium, Switzerland, Austria, Croatia, Germany, Denmark, Norway, UK, Ireland and the USA. And I even might have missed one or two ….

The event started with a presentation by the “father of APEX”, Mike Hichwa, talking about "Oracle APEX Past, Present and Future”. Of course everyone is curious what the APEX future might bring: Friendly URL’s, automated testing, more JSON, concurrent APEX versions, third party Oauth 2 authentication (think Facebook, Google), APEX app diff and more, a lot more, REST capabilities. And now we have to wait for APEX 5.2 … and that might take a while! 
After this keynote, the conference split up in three tracks. After the coffee break I returned to to big theatre where Geertjan Wielenga talked about "Finally Javas…

Push changed rows to an Interactive Grid

For pushing changes from the database to the end user, the regular solution is using websockets. A change in a record is detected - using a trigger or using the CQN (Change Query Notification) feature - and a notification is send to a websocket server. That websocket server broadcasts the notification over a channel to all browsers that are tuned in to that websocket channel. Then the browser reacts to that notification, usually showing an alert or refreshing a report. This trick is described on multiple sites, just Google for "oracle apex websockets" or similar.

So back in the old days, we used that notification in the browser to refresh the (interactive) report. But along comes the Interactive Grid (IG). While he full-refresh mechanism still works for IG, an IG has also the option to refresh just one row.  So wouldn't it be awesome that just the changed row(s) get refreshed upon a change in the database, instead of the whole report? Can we do it ... yes we can!
First i…