Cayenne User Documentation
RelationshipQuery

`RelationshipQuery` is used by Cayenne internally to fetch object(s) related to a single given object via a mapped ObjRelationship. In some cases the query can be used directly in the application, e.g. if we want to refresh related objects.

    ObjectId id = new ObjectId("Artist", "ARTIST_ID", 55);
    RelationshipQuery query = new RelationshipQuery(id, "paintingArray", true);
    List paintings = context.performQuery(query);

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