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.NewErrorOnlyIterator(err)
}
if !ok {
return model.NewObjectIterator()
}
return model.NewObjectIterator(document)
}
// 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...)
}
// Returns an iterator for all refs without error and a slice of the errors
func FailsafeDereferenceIterator(refs ...Ref) (i model.Iterator, errors []error) {
var docs []interface{}
for i := range refs {
doc, err := refs[i].Get()
if err == nil {
docs = append(docs, doc)
} else {
err = errs.Format("%s: %s", refs[i].ID.Hex(), err.Error())
errors = append(errors, err)
}
}
return model.NewObjectIterator(docs...), errors
}
// Returns an iterator of dereferenced refs, or an error iterator if there was an error
func DereferenceIterator(refs ...Ref) model.Iterator {
var docs []interface{}
for i := range refs {
doc, err := refs[i].Get()
if err != nil {
err = errs.Format("%s: %s", refs[i].ID.Hex(), err.Error())
return model.NewErrorOnlyIterator(err)
} else if doc != nil {
docs = append(docs, doc)
}
}
return model.NewObjectIterator(docs...)
}
func (self *DocumentBase) Iterator() model.Iterator {
return model.NewObjectIterator(self.embeddingStruct)
}