Function groupFilter

edgraph/access.go:1238–1264

(groupIds []string)

}

func groupFilter(groupIds []string) *dql.FilterTree {
	// The user doesn't have any groups, so add an empty filter @filter(uid([])) so that all
	// groups are filtered out.
	if len(groupIds) == 0 {
		filter := &dql.FilterTree{
			Func: &dql.Function{
				Name: "uid",
				UID:  []uint64{},
			},
		}
		return filter
	}

	filter := &dql.FilterTree{
		Func: &dql.Function{
			Attr: "dgraph.xid",
			Name: "eq",
		},
	}

	for _, gid := range groupIds {
		filter.Func.Args = append(filter.Func.Args,
			dql.Arg{Value: gid})
	}

	return filter
}

/*
	 addUserFilterToFilter makes sure that user can't misue filters to access other user's info.