Kettle’s named parameters often enable very elegant solutions for ETL requirements. This post gives an introduction to the named parameters feature of Kettle.
It is safe to think of named parameters as variables with their initial values assigned before the ETL process starts. In fact, they are available as variables when the ETL process executes. Their values can be specified in the launch dialog inside spoon or on the command line when running kitchen or pan. Continue reading Using Named Parameters in Kettle
When working with JasperServer, JasperReports, and iReport it is a common problem to perform date calculations. You would usually want to calculate dates to fill parameters when calling sub reports for example. iReport expressions offer a way to do calculations in Java or Groovy. But each calculation, like the definition of a parameter value, must consist of exactly one expression. When trying to define a complex date object, describing the last day of the last month for example, most people find it very difficult, if not impossible, to do this in a single expression. . . . → Read More: Date calculation in iReport