Which reader format is particularly useful to use in conjunction with the WorkspaceRunner transformer for batch processing?

• A. Directory and File Pathnames
• B. Jpg
• C. Kml
• D. Png

Answer: (A)

The idea is to feed a sequence of input locations into the workspace so you can run it many times in one go. The WorkspaceRunner transformer is designed to execute the same workspace repeatedly for different inputs, and to do that you need a source that provides multiple file or directory paths. The Directory and File Pathnames reader is built to enumerate files and directories, producing a stream of path values that can drive WorkspaceRunner to launch a separate run for each path. This makes it the natural choice for batch processing, such as processing every file in a folder or every item in a list.

Other formats like Jpg, Kml, or Png represent single data instances (images or geographic data) rather than a mechanism to generate a batch of input locations. They don’t provide a convenient way to enumerate multiple inputs for repeated runs, so they aren’t as suitable for driving batch workflows with WorkspaceRunner.