How to find the parent of an artifact programmatically?

Unfortunately, there isn't a reference from a test case to it's parent test plan:

https://jazz.net/projects/rational-quality-manager/api-doc-3.0/api-files/schemas/qm_xsd/elements/testcase_1.html

However, you can use the fields filter (https://jazz.net/wiki/bin/view/Main/RqmApi#fields) to query for test case referenced by a specific test plan.

Unfortunately, there isn't a reference from a test case to it's parent test plan:

https://jazz.net/projects/rational-quality-manager/api-doc-3.0/api-files/schemas/qm_xsd/elements/testcase_1.html

However, you can use the fields filter (https://jazz.net/wiki/bin/view/Main/RqmApi#fields) to query for test case referenced by a specific test plan.

So that means always starting from the parent then looking for its children, which is time-consuming when I hope to find the parent for a test case. I am curious that how RQM does to display the parent in UI?

The parent test plan(s) - note, there may be more than one - are resolved using a query such as:

<feedUrl>?fields=feed/entry/content/testplan/testcase

The parent test plan(s) - note, there may be more than one - are resolved using a query such as:

<feedUrl>?fields=feed/entry/content/testplan/testcase

Paules, thanks for your answer.