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How to Add Looping Functoids to a Map

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Overview

The Looping functoid combines multiple records or fields in the source schema into a single record in the destination schema.

For conceptual information about the Looping functoid, see Looping Functoid.

Under certain conditions, some functoids might not behave as expected when they are used in a map with a Looping functoid. If such a functoid meets the following conditions, it does not produce the expected results:

  • The functoid has more than one input link.

  • Two or more of the functoid input links are linked to child fields of the input records to the Looping functoid, where the child fields are not siblings.

  • The functoid has an output link that is linked to a child field of the output record of the Looping functoid.

Add the Looping functoid to a map and configure it

  1. With the Visual Studio Toolbox active, click the Advanced Functoids tab to select that category of functoids.

    The list of advanced functoids in the chosen category appears.

  2. Drag the Looping functoid from the Toolbox to the appropriate location on a grid page.

    Image that represents the Looping functoid.
    Looping functoid

    Note

    The functoid will be placed on the displayed grid page. If you want to put the functoid onto a different grid page, you need to display that other grid page first.

    If you are constructing a map using more than one functoid together, you need to consider their relative left to right placement. Functoids are executed from left to right. The output of a functoid can only be input to another functoid that is farther to the right.

  3. To establish the input parameters for the Looping functoid, create an input link by dragging a record or field from the source schema to the Looping functoid, or dragging the Looping functoid to a record or field in the source schema. Repeat as required to include all of the relevant input records or fields to the Looping functoid.

  4. To use the output parameter from the Looping functoid, create an output link by dragging the Looping functoid to a record or field in the destination schema, or by dragging a record or field in the destination schema to the Looping functoid.

    Note

    Unlike many other functoids, the output of the Looping functoid can only be linked to an element of the destination schema.

See Also