dynamic pipelines with DADE ???

rbuser

Hello,

I do a program which can create reports dynamically with the TppReport
component.

I can have several sorts of reports, so the number of the pipelines can
change. So, I create the pipelines dynamically. But I have some problems to
load the data when I load the reports with the TppReportTemplate.

I think DADE component are perhaps a good answer to my problem. But I've
never used these components.

So, anybody can tell me if I can use these components for my problem ? If
yes, which components and how can I do that ?

Thanks ! Alex

nardmoseley

Yes, using DADE will solve your issues. When using DADE, the data definition
is saved with the report definition.

DADE adds a Data tab to the Report Designer. From the Data workspace you use
the Query Wizard and Query Designer to build SQL DataViews. You can visually
link dataviews to create master/detail relationships and you can easily
specify ask at runtime search criteria (called AutoSearch).

A SQL DataView is a container for the DataSet, TDataSource, DBPipeline that
is required for database access.

Download a trial version of ReportBuilder Enterprise and run the
RBuilder\Demos\EndUser\Report Explorer example.

ReportBuilder Enterprise also includes RAP, which adds a Calc tab to the
Report Designer. The Calc workspace enables calculations and event-handlers
to be coded using a run-time Pascal environment. This enables the code to be
saved as part of the report definition. For an example, see
RBuilder\Demos\RAP.

Using DADE and RAP enables the report definitions to contain Data Access +
Code + Layout information = more portable report templates.


--
Nard Moseley
Digital Metaphors Corporation
www.digital-metaphors.com

rbuser

So, I create now dynmically a DataView and a pipeline connected on the
DataView.

When I create and savge my report, it has no problem. But when I reload
them, I have the following error : EComponentError - "The component
'plTestppField1' already exists".

I don't why I receive this error message. Anybody can localize my problem
and help me ???

nardmoseley

When you load the report, there cannot be any other components already
existing that have the same name.

If you would like to create a simple, minimal example project that
demonstrates what you are trying to accomplish, you can send in email in zip
format to support@digital-metaphors.com and we can check it out here. Please
use only standard Delphi components and ReportBuilder.

--
Nard Moseley
Digital Metaphors Corporation
http://www.digital-metaphors.com

rbuser

I have sent a small sample project to illustrate my error to
support@digital-metaphors.com

Thanks for help !