controls-scrollable-datatable.js

[svande]

Can I put Firebug javascript breakpoints on controls-scrollable-datatable.js somehow?
Thx.

[ilya_shaikovsky]

yes, you can add them as for usual script files. Which concrete problems you have?

[ilya_shaikovsky]

seems just fireBug issue :)

Please explain actual problem more. We will try to investigate on our side.

[svande]

NB: I am extending ExtendedDataModel and only retrieving the necessary records. This because of the potential 17.000.000+ records.

first load:
http://img217.imageshack.us/img217/2923/firstload.jpg

first scroll:

Start loading: index: 19, and startRow: 0, and count: 10

POST
_rows_input 45
:si 458,19,29,0,0
state_input:10,19,0
http://img88.imageshack.us/img88/6365/firstscroll.jpg

scroll back:

Start loading: index: 1, and startRow: 0, and count: 10

POST
_rows_input 45
:si 4,1,11,0,19
state_input:10,1,0
http://img154.imageshack.us/img154/6130/scrollback.jpg

[ilya_shaikovsky]

do you able to provide simple sample for us with mock data in war?

[svande]

I think I found the problem already:

In the function 'adjustDataPosition' in controls-scrollable-data-table.js on line 1050 there is an assumption.
Namely that the all the space for rows is used.
(The rich:scrollableDataTable height attribute)

This is not always the case. For example in my case when only necessary rows are collected. And not simply all rows.

On that line (controls-scrollable-data-table.js line 1050):

var first = parseInt(pos / this.defaultRowHeight) - 1;

'pos' is the bottom position of the scrollbar.

The solution is to find an algorithm that takes into account the possibiliy of empty rows.

In my case a workaround is to make sure the space for the table is smaller than the rows actually filled.

A situation like this is maybe very rare.

Thx for your time.

[ilya_shaikovsky]

finally found.. this seems your case https://jira.jboss.org/jira/browse/RF-1883