Hi,

In the Functions Description document it is mentioned which functions can be partitioned.

Is it possible to set a site context when the user logs in (or based on a dynamic property in EPiServer for example) to simplify further operations?

The StarSuite.Core.SiteHandler.CurrentSite property holds a reference to the site assigned to the current context. A site is assigned based on the Url the user enters when visiting the website. You can set up different Urls a site should bind to under System Settings > Sites > "The site you wish to edit" in the administration interface.

What is the meaning of the "Global" and "Default" sites I get when installing?

Global is objects that are not assigned to any site. Objects created passing "null" as site will be treated as "Global". "Default" is the site partition automatically created by the installation program.

I can't seem to find a way to specify site on a query, how does sites affect queries?

Sites are most often exposed as a criterion on a query where the type in question has support for partitioning. For example ImageGalleryQuery's Site criterion, where the ImageGallery class itself also has a property named Site.

Community partitions should not be seen as a way to have multiple community websites in one installation, and the user database will be shared among all partitions. Partitions should more be seen as a way to partition content on language, which is a common use for it, for example with each website url leading to a localized version of the website, listing localized community content on the first page.