1

Report data provider class (RDP) extends to SRSReportDataProviderBase

Report data provider class is used to build up datasets and populates values in them using a complex set of business logic.

When data is to be fetched from multiple queries and also includes complex calculations.

2

Report data provider (RDP) contract

Use attribute: [DataContractAttribute]

RDP contracts are used to provide parameters to the report. On the basis of which, queries get executed during report processing, and fetch data from the database.

When specific parameters are required to filter data in the report.

3

Print contract extends to

SrsPrintDestinationSettings

Contract which contains all contracts like query contract, print contract, RDP contract, RDL contract once report RDL is parsed.

Not to be overridden.

4

Query contract. No class, instead a map object which contains parameters and a query object.

Contract which provides a query contract to the report.

Not to be overridden.

5

Controller extends to SrsReportRunController

The controller for a set of reports having the same functionality. This class controls the behavior of the reports, like on the basis of a caller, which reports to render.

When multiple designs are available for a report or multiple reports are rendered using the same controller.

6

UI Builders extends to SrsReportDataContractUIBuilder and SysOperationAutomaticUIBuilder

UI Builders are used to provide a layout to various parameters we add using contracts. Also, we can control the behavior of contracts using the UI Builder class.

Proper UI has to be built up or the parameter behavior has to be modified.

7

Preprocess: SrsReportDataProviderPreProcess

The Preprocess class prepares the data, before the report is rendered to the user in report viewer control.

When dealing with huge data and reports take a long time to run which may lead to time-out issues.