Sunday, April 10, 2011

Sample Workflows — Kepler

Sample Workflows — Kepler: "The Web Services workflow uses Kepler's Web Service actor to invoke a genomics data web service, which accesses and queries a remote genomics database and returns a genetic sequence. The name of the sequence (i.e., the gene accession number) is passed to the Web Services actor by a String Constant actor.

 After the service has executed, the Web Service actor outputs the retrieved gene sequence so that it can be displayed in multiple formats using three different Display actors: one for XML (the format in which the results are returned by default), one for a sequence of elements extracted from the XML, and one for an HTML document that can be displayed on a website. In addition, the workflow uses a fourth Display actor to display errors returned by the remote server (e.g., server down or incorrect input)."