OOW2010 Thursday

The last day of this year's conference. And the day after the event. It was noticeable that it already was a lot more quiet than the days before. And that sure had an effect on the turnout of my session. Being scheduled on the last day isn't an advance.
Just before my session about Edition Based Redefinition and APEX started I checked my demos and they ran perfect. And after my session they ran perfect as well. But during my session they didn't perform at all - and Marco was enjoying that on the front row... But luckily I had a backup: a number of screenprints. Apart from this minor inconvenience the presentation went pretty good! Afterwards I got some really nice compliments of Brynn, Patrick and Joel.
Then it was time to wind down. First in the OTN lounge, and then at the "It's a wrap!" party. That party was really nice: sun, beer and good music. A perfect way to end a good Oracle Open World
See you all again next year...or earlier when possible!

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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:
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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 processing y…

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However ...

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Until we had the IG, we showed the data in a report (Interactive or Classic). Changes to the data where made by popping up a form page, making changes, saving and refreshing the report upon closing the dialog. Or by clicking an icon / button / link in your report that makes some changes to the data (like changing a status) and ... refresh the report. That all works fine, but the downsides are: The whole dataset is returned from the server to the client - again and again. And if your pagination size is large, that does lead to more and more network traffic, more interpretation by the browser and more waiting time for the end user.The "current record" might be out of focus after the refresh, especially by larger pagination sizes, as the first rows will be shown. Or (even worse) while you…

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