Developer Mapping Guide

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Defining Mapplet Outputs

Create a mapplet and define the mapping outputs in the

Outputs

tab of the mapplet

Properties

view. Each mapping output definition describes what type of aggregation to perform and the data type of the results.

After you create a mapplet, click inside the mapping canvas to access the mapplet properties.

Click the

Outputs

view.

Click

New

to create a mapping output.

The Developer tool creates a mapping output with default field values.

Change the name that identifies the mapping output.

Select a numeric or date mapping output type. If you are creating a numeric type, enter the precision and scale.

Choose the aggregation type for the mapping output.

You can summarize the output expression or you can find the minimum or maximum expression value that the mapping processed. Default is SUM.

The following image shows a mapplet output called Total_Sales_Tax with an aggregation type SUM:

Click

File

Save

to save the mapping output.

You must save the mapping output before you can create any mapping output expression in an Expression transformation.