Question

How do I access a mapping parameter ($$myvariable) from a Java Transformation in Informatica Powercenter?

What I want to do is to make a Java transformation reusable by making a part of it configurable, and a variable seemed suitable for that, however I haven’t been able to access (read) a variable from the Java code.

Answer 1

I see three options

• use an expression transformation with a variable port that passes
  the variable into an input port defined in the java transformation

• Use shell variables and get them with the Java ‘System.getenv’ call for example:

  final String myconfig = System.getenv("MYCONFIG");

• use a Java expression to get to the variable

  Integer getEmpID() throws SDKException
{
return (Integer)invokeJExpression("SETCOUNTVARIABLE($$MyVar)", new Object [] {} );
}