func newIterator(query Query) model.Iterator {
mgoQuery, err := query.mongoQuery()
if err != nil {
return model.NewErrorIterator(err)
}
mgoIter := mgoQuery.Iter()
collection, selectors := collectionAndSubDocumentSelectors(query)
return &MongoIterator{collection: collection, selectors: selectors, iter: mgoIter}
}
// Returns an iterator of dereferenced refs, or an error iterator if there was an error
func DereferenceIterator(refs ...Ref) model.Iterator {
docs := make([]interface{}, len(refs))
for i := range refs {
var err error
docs[i], err = refs[i].Get()
if err != nil {
err = errs.Format("%s: %s", refs[i].ID.Hex(), err.Error())
return model.NewErrorIterator(err)
}
}
return model.NewObjectIterator(docs...)
}
func (self *Collection) TryDocumentWithIDIterator(id bson.ObjectId, subDocSelectors ...string) model.Iterator {
if len(subDocSelectors) > 0 {
panic("Sub document selectors are not implemented")
}
document, ok, err := self.TryDocumentWithID(id, subDocSelectors...)
if err != nil {
return model.NewErrorIterator(err)
}
if !ok {
return model.NewObjectIterator()
}
return model.NewObjectIterator(document)
}
func (self *QueryError) Iterator() model.Iterator {
return model.NewErrorIterator(self.Err)
}