Mapper Components

You can use Mapper components to map and transform a stream's data, as well as variables and component properties. Mappers process a stream as rows. Mappers process each row by executing the mapping you create in the mapping window.

See below for the basic workflow to add a mapper to your flow. The following sections in this chapter describe graphical workflows to design mappings.

Adding a Mapper

Add a mapper from the Control tab of the palette or the favorites section of the palette.

Connecting an Input Stream

To process a component's output stream, in the workspace drop a mapper after the component, linking the green input node to the component's blue output node .

Connecting an Output Stream

You can output the results of the mapping as a new stream. Link the next component and change the mapper's output stream type, if necessary, by clicking the label next to the mapper. Or, set the mapper's StreamPassthrough property to output the input stream unchanged.

Designing a Mapping

Double-click a mapper to open the mapping window. Start from Using the Mapping Window for graphical workflows. You can speed up the basic drag-and-drop procedure by automatically mapping fields.