Avrom’s Java EE and Oracle ADF Blog

Hi all,

This blog has been on much longer hiatus than I was hoping, and alas the hiatus will likely be continuing for a while. I’ve been massively oversubscribed at work, and now I’m fighting an illness, and something has had to give, and I’m afraid it’s been my blogging. Rest assured, though, this blog is not abandoned–I’ll be back to the usual weekly schedule just as soon as I can.

In other news, ODTUG has just extended the discounted “early-bird registration” deadline for ODTUG Kaleidoscope 2009 to April 7th. It should be a great conference this year: Lots of interesting Java and ADF sessions, “Sundown Sessions” with Oracle ACEs, another installment of the ADF Methodology workshop, and, for when you’re off the clock, proximity to one of the two best public aquaria in the U.S. (the only thing that gives the Monterey Bay Aquarium a run for its money is the Boston Aquarium).

Full disclosure: I’m giving two talks myself at Kaleidoscope–one on Extreme Reusability, and one on business components and database package APIs. Both are in some part based on things I’ve posted in this blog, but both will have a few additional tricks and techniques to them.

If any of this interests you, head on over to the ODTUG Kaleidoscope 2009 Registration Page.

…well, except for this one. I’m trying to get my manuscript off to the publisher.

Now that we’ve looked at tuning entity objects, associations, and, in three parts, view objects, lets look at tuning view links for best performance.

This is going to be a shortish post, because most aspects of tuning view links are similar to tuning associations. For example, in addition to affecting how new rows appear in view object instance result sets, view link consistency affects how new rows appear in view link accessor-returned rowsets, and you can use similar techniques to manipulate these accessors that I told you about for manipulating association accessors. And view links, like associations, can maintain accessor rowsets, with the same advantages and disadvantages of doing so.

But there’s one serious issue that comes up for view links that doesn’t come up for associations: Controlling view link query execution time. This can have such an amazing affect on dealing with bottlenecks in application performance that I’m surprised it isn’t discussed more frequently.

Continue Reading »

I’m back from the wilds of December, and to my regular schedule. I had intended to talk about view links this week, but I realized there were two important things about tuning view objects that I forgot to discuss in Part 1 or Part 2: View link consistency and in-memory filtering.

View Link Consistency

Like association consistency, view link consistency affects whether new rows appear in the query collections for accessors (view link accessors this time, rather than association accessors). But it does something more: It affects how new entity rows appear in the query collections of view objects.

Continue Reading »

…is how it makes our lives so much easier.

So, I think Dreamhost, or possibly WordPress, or maybe CFormsII, has done something that made my contact form stop sending me email. Problem is, I’m not sure *when* this happened; I have, at least, some hits on the contact form that didn’t result in my receiving any emails, although I also have some (much older) emails that did come through the contact form.

So:

1. Best not to use the contact form for now. If you want to contact me, and you don’t want to do it via a comment, email me directly (see below).
2. If you’ve already used the contact form to contact me, and you haven’t received a reply, I’m really, really sorry–I think your email got lost in the void. If it’s not wildly inconvenient, please resend, again by emailing me directly (see below).

My email address:  My first name <at> avromroyfaderman <dot> com. Again, my apologies.

Update June 13: I think I’ve got the contact form fixed now.