Creating a service
We’ve had a couple of posts in the past about creating RESTful services with the KNIME Analytics Platform and using the REST API provided by the KNIME Server. But since we keep adding functionality and making things easier, it’s worthwhile to occasionally come back and revisit the topic. This post will demonstrate a couple of changes since Jon’s last update.
We’ll start with this simple workflow, which finds the top N rows of a database by sorting on a particular column and then taking the first N rows from the result:
We want to make this workflow available as a web service where the caller can select the column to use for sorting and the value of N. It’s easy to change the sort column and N value in the KNIME Analytics Platform: we just configure those nodes and pick the values we want.
(click on the image to see it in full size)
This option isn’t available for web services, so we need to take another approach.