The concept of report module.
Job gets data from reader, passes through different converters and writes data via writer.
Input data can be read from database, files and etc.
Converters can convert data from one form to another.
Output data can be written to file (e.g. XML, XLS), sent by E-mail and etc.
See org.karpukhin.report.ReportApplication and org.karpukhin.report.config.Config classes.