Development of own data origins

eva/3 allows the access to data bases or static tables. But to attend on other data origins like web servers, a own RecordSet has to be implemented.

Here is a class needed, which extends the abstract class RecordSet. For the involvement as data origins in forms and reports a .rs file is needed. The .rs file contains information about parameter and column definitions, as well as the deposited class.

If the column information cannot be acquired, then the method getColumnDescriptors() can be overwritten, to generate the information automatically and to reflect it, or the the information were set during the initialisation in the RecordSetDescriptor. The parameterisation of the .rs-file allows the multiple usage of the bonded RecordSet class. Different parameterised .rs-files can in association with the same RecordSet class prepare different data, when the RecordSet class interprets these parameters.
The use of parameters is optional.

Developing Additional eva/3 Components
Development of a RecordSet class
Practical use of the RecordSet
Involvement as data source
CSVRecordSource reference implementation