Hi all, kind of a stupid question but in my whole career with WO I never used Single Table Inheritance so I'm kind of a newbie here...
I'll try to explain with a small example: I have an entity called PointOfInterest (POI), defined by the main attributes which are name, latitude, longitude, type and with a relationship to a City. I then created two subclasses of POI Restaurant (with qualifier type='R') and some more attributes Club (with qualifier type='C') and some different attributes All is mapped in two tables, one for City and one for POI. Everything looked fine in my head... I find puzzling though that if I ask a City for its POIs I get an array full of duplicates in this example I'm printing out all the POIs for a City: POI name: Open POI Class: your.app.logic.Club POI name: Jazz Club POI Class: your.app.logic.Club POI name: Dal Baffo POI Class: your.app.logic.Restaurant POI name: Zushi POI Class: your.app.logic.Restaurant POI name: Ristorante POI Class: your.app.logic.Restaurant POI name: Dal Baffo POI Class: your.app.logic.Restaurant POI name: Zushi POI Class: your.app.logic.Restaurant POI name: Open POI Class: your.app.logic.Club POI name: Jazz Club POI Class: your.app.logic.Club POI name: Generic poi POI Class: your.app.logic.PointOfInterest POI name: Ristorante POI Class: your.app.logic.Restaurant In reality I only have 6 items in my POI table: 3 Restaurants, 2 Clubs and one row with blank type. So I was expecting of getting something like this: POI name: Open POI Class: your.app.logic.Club POI name: Jazz Club POI Class: your.app.logic.Club POI name: Dal Baffo POI Class: your.app.logic.Restaurant POI name: Zushi POI Class: your.app.logic.Restaurant POI name: Ristorante POI Class: your.app.logic.Restaurant POI name: Generic poi POI Class: your.app.logic.PointOfInterest Maybe I'm approaching the problem in the stupidest way but I'd like to understand a little bit more about what you guys think... Thanks, Matteo
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