How to use time-intensive business objects

[jmiller]

I want to tie my application's data into Stimulsoft. I think I figured several ways to do this, but I am not sure I am doing it correctly. My data is calculated on the fly and can be time-intensive. The schema is fixed and I want the user to be able to design the report just using the schema. If they run the report then I want my application to do the calculations. The way I did it (I use ArrayList as my list of objects), Stimulsoft wants to load all data once RegData() is called. Basically I want it to work in a similar fashion with a SQL table as a data source. We design with table schema but data is only loaded when the report is run.

[Alex K.]

Hello,

If we understand your task correctly then, yes, you can use RegData() method for your task.
Also you can use the following code for check the used datasources in report:

Code: Select all

StiDataSourceHelper.GetUsedDataSourcesNames(report);
StiBusinessObjectHelper.GetUsedBusinessObjectsNames(report);

Thank you.

[jmiller]

I don't I explained my problem that well. I want to use data that is generate by my application. I have a schema for the data. I can call RegData() to register my data. But the issue I am running into is that RegData() is reading all the data, which in my case takes some time.
class MyDataList : IEnumerable
class MyDataEnum : IEnumerator

The MyDataList and MyDataEnum are written to do a lot of calculations against a lot of historic data - so it can take some time.

Now I want the user to be able to at least design the report:
report.RegData(new MyDataList());
report.Dictionary.Synchronize();
report.Design();

The problem in the above code is that RegData() then does the entire reading of data, when all I want is to design with the schema. I am wondering what the best way to do this is.

The way I worked through it but I don't know if there is a better way.
I create DataSet.
I load the schema into the DataSet.
I call report.RegData() with the DataSet. At this point there is no data in the DataSet.
I added a static public function in my code called LoadData() that will use MyDataList to create the data and copy the into the DataSet.
I add code to the Report.BeginRender event: MyStaticPublic.LoadData()

So when designing there is no data being read, which is what I wanted. When the user renders the report, it will call LoadData() which loads the data into DataSet and produces data for the report.

[HighAley]

Hello.

If you try to register Business Objects, you should use next code:

Code: Select all

rep.RegBusinessObject("Demo", ds);
rep.Dictionary.SynchronizeBusinessObjects(3);

3 is a nested level.

Thank you.