I've created an External Content Type which uses an OData service as it source, and I created a content source in the Search Service Application in order to crawl this data. This works fine.
However, I need security-trimmed search results. I found this article: http://msdn.microsoft.com/en-us/library/gg294169.aspx which describes how to implement item level security, but it seems to apply to ECT's which are backed by WCF services or direct database access only.
I can imagine that I could include the ACL info in a field in my OData results, but how to configure the ECT to make use of that provided information ?