Tuesday, May 23, 2006

Ajax Memory Tree Article on OTN

My article, "Building an Ajax Memory Tree" has finally been published on OTN. It was also picked up by Ajaxian today, and got decent reviews there!

In this article, I discuss how you can use ApEx & Ajax to create a new type of Tree. This Ajax-based tree is more lightweight than the built-in ApEx tree. You can also search for a node in my version, and have the Tree automatically expand to that node - something which the built-in ApEx Tree cannot do.

To give credit where credit is due, the basis for the Tree which I create in the article is based on Carl Backstrom's Ajax-based tree.

12 comments:

Colin Sheppard said...

Do you have anything that does a drag-and-drop style view tree, that could allow you to visually rearrange/add/delete tree nodes?

Scott said...

Do you have anything that does a drag-and-drop style view tree, that could allow you to visually rearrange/add/delete tree nodes?

I do not have such a tree at this time.

- Scott -

Colin Sheppard said...

Carl said this would be coming in Apex 3.0

In the meantime, I was alerted to this tool:

http://scbr.com/docs/products/dhtmlxTree/

Could be useful instead in the meantime...

Anonymous said...

Hi!
Is it possible to build ajax memory tree with checkboxes and submit button. When checkboxes are checked and submit bottom clicked it displays report of those employees checked...

- Sule -

Scott said...

Is it possible to build ajax memory tree with checkboxes and submit button. When checkboxes are checked and submit bottom clicked it displays report of those employees checked...


Sure, it's possible; I don't have the time right now to do so, but you're welcome to give it a try. :)

- Scott -

Anonymous said...

Hi,
I need to build a tree of checkboxes ... I need that the nodes below a checked node are checked automatically. Is it possible with an Ajax Memory Tree?
Thanks.
Deni

Scott said...

Deni,

You can likely retro-fit the code of the Ajax Memory tree to accommodate that, but I am not sure as to what the specifics would be.

Thanks,

- Scott -

Ian Beadle said...

Just to let you know that Listing 1 and Listing 2 in your article on OTN no longer render. Is there any other url where they are published?? - Great article

Scott said...

Ian,

I'm not sure where they went, either.

That article is 5+ years old, and most of what it outlined can be done with native APEX 4.0 trees now. I'd have a look at those, as they are a lot simpler to implement and have more functionality than my example.

Thanks,

- Scott -

axiom761 said...

The listings of the code are not appearing on the Oracle site any more. I had done some good work with this code, but have had a database meltdown and am desperate to recreate the page I was working on. The links for the Listings work, but the page on technet is blank. Can you please somehow send me the pl/sql and javascript codes?

Thanks very much.
axiom7@me.com

Scott said...

Axiom,

As I mentioned in my previous comment, I am not sure where the code is for that, and even if I did have it, it's so out of date at this point, I would not recommend to use it. You can achieve almost the same thing in APEX 4.0 native trees today.

Thanks,

- Scott -

Ligon said...

Hi Scott,

The package body (ajax_memory_tree) link pointing to a blank page in the Oracle article below

http://www.oracle.com/technetwork/articles/spendolini-tree-096388.html

Could you please provide a valid link?

Thank you, Ligon, ligongl@gmail.com