Integrate drill through in custom application

Julien401

Hello,

I have been using interactivity on charts in my custom application integrating birt. I am very happy of the rendering by now.

I am now trying to switch to an other report (passing params) by clicking on the report.
So far so good it works in designer ...
but In my app, the result is really not as expected. It calls some wrong url that lead to a 404.

So I need a better understanding of what is actually done by birt in this case.
It seems to me it builds a custom url containing:
[SERVER_URL]/[MY_GENERATED_CHARTS_DIRECTORY]/run?__report=[MY_CHART_URL].rptdesign&[MY_PARAM]=[SOME_VALUE]&__overwrite=true

I am not really happy with this url, is there any way to modify it? Where does it come from? Is the sample web interface using a servlet called run?

Maybe I should simple use the hyperlink option -> URI, in this case, is the scripting language allowing me to build this url based on a specific info (column value on the clicked row)?

I know this subject is going into multiple directions, but the ultimate goal is really to integrate interactivity and links between charts with parameters.

Any help highly appreciated.

Julien401

Reading the source code, I realized this url is build in HTMLActionHandler.buildDrillAction().
Url elements are actually hardcoded in the class, I would rather have a somewhat configurable.

So a workaround would be to implement a custom HTMLActionHandler overriding buildDrillAction(). This custom method would be responsible for building a more generic url, that I can config for my specific case.
>> IMO this would be an interesting enhancement for BIRT in general.

In the API, it seems I can specify that I want to use my custom action handler in:
HTMLRenderOption.setActionHandler()

Could anyone validate this strategy or propose a better/simpler solution?

Also, I realized there are some bugs (size in pixel not well supported for charts) and interesting enhancements (defining Master Layout size in % > Basically 100% so that size can be defined at webapplication level). Could anyone point me to the class where this is defined?
I found some interesting elements in HTMLRenderOption (setOutputMasterPageMargins()...), but I need to modify deeper parts (override html rendering for layout size & chart size).