Here we are going to construct (and perform) a simple query to find the names and mailboxes of people in an rdfweb database. Hopefully you'll get the idea...
The question mark with a blob (grouped with other editing mode tools) allows one to select unknown nodes. (Note: In future versions you will be able to select arcs as well)
The other question mark icon (at the extreme right of the toolbar) opens the query panel; we'll see this below.
To mark the two nodes just select the 'add query items' mode and click on the nodes. They'll gain yellow rectangles to indicate that they are now query items. Incidently, it doesn't matter if query items already have ids - this is ignored by the query.
Now we are ready to perform the query. Open the query panel (rightmost icon in the toolbar). This opens up a 'drawer' connected to the window.
The query source selected is actually the one we want, so don't change it.
Note: The URLs included in fact describe a source - they don't contain the data which is returned (in general). This is a experimental so don't worry about it too much.
Ok, let's do the query (click on the big 'do query' button). The panel indicates that the query is being performed.
Note: If you try to perform a new query when the previous one hasn't finished the application will warn you that this will stop the old one.
This may take a while, depending on the data queried and the query itself. Once the query has finished you'll hear a 'ping'.
Selecting a result row will insert the data into the model.