Overview

You can use this Snap to enable looping on pipeline executions based on a stop condition or iteration limit. The output document of each iteration is fed into the next iteration as the input document, and execution continues until the stop condition is met or the iteration limit is reached. Learn more.

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1. The parent pipeline passes the input document to the child pipeline.

2. The child pipeline executes.

3. The PipeLoop Snap collects the output document from the child pipeline.

4. The PipeLoop Snap evaluates the stop condition based on the child pipeline’s output document.

5. If the stop condition is false, the Snap checks if the iteration limit is reached.

6. If the iteration limit is not reached, the Snap passes the output document to input (back to Step 1). The iteration stops if the stop condition is evaluated to true or the iteration limit is reached.”As shown in the example below, you can preview the child pipeline by hovering over the Pipeloop Snap while the parent pipeline is open in the Designer.

   1. Parent pipeline: The parent pipeline generates the initial input using the JSON Generator Snap. The PipeLoop Snap iteratively calls the child pipeline until the condition specified is reached.

   2. Child pipeline: The Mapper Snap in the child pipeline processes the mapping and transformation of data as needed during each iteration.
      

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Example

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