Parameters with Operation Mapping / Java Mapping

[mg_76]

Hi experts,

I need to use two parameters in operation mapping and I need to use them in my Java mapping.

I already inserted in my IFlow and in the Operation Mapping the two parameters:

I insert in my Java code the following rows:

String paramA=this.inputParameters.getString("paramA");

String paramB=this.inputParameters.getString("paramB");

But when I test the mapping goes in error and the parameters are equals to null

My mapping exeteds "DefaultStreamTransformation" class

I'm searching something to help me to fix that, and I found the following thread but it didn't help me much:

Someone can give me some explanation about this problem?

Thanks in advance for any help

[vadimklimov · Accepted solution]

Hi Marco,

Code snippet for retrieving mapping parameters within Java mapping program can be found at Parameterized Java Mappings - Managing Services in the Enterprise Services Repository - SAP Library. Using it as a reference shall help to get familiar with used APIs when working with parameterized mapping.

Looking into your code, I suggest checking following:

• Java mapping class shall extend AbstractTransformation (com.sap.aii.mapping.api.AbstractTransformation), not DefaultStreamTransformation;
• Mapping parameter is accessed by calling TransformationInput.getInputParameters().getString(<parameter name>).

Regards,

Vadim

[mg_76 · Accepted solution]

Hi Vadim,

thanks for the useful link to the Help Portal and also for the precious advice.