Free-form search query support

[streamunlimited]

Hello; we are trying to perform UPnP search on minimserver, but when using more complicated queries, we see some really strange behavior; e.g. for queries like

Code:

dc:title contains "A" or dc:title contains "B"

and like

Code:

dc:title contains "B" or dc:title contains "A"

the result set is not the same.

Also, for another search criteria, which are legitimate according to UPnP specs, we are getting "Unsupported or invalid search criteria" error, e.g.:

Code:

dc:title contains "A" and dc:title contains "B"

In forums, we found a post saying that free-form search queries are (or at least, were) not supported; what subset of search queries is currently supported in minimserver? What are the cases when a search query would be processed without an error, but yield invalid results?