// GetCollection is part of the Database interface.
func (db *database) GetCollection(name string) (collection mongo.Collection, closer SessionCloser) {
info, found := db.schema[name]
if !found {
logger.Errorf("using unknown collection %q", name)
}
// Copy session if necessary.
if db.ownSession {
collection = mongo.WrapCollection(db.raw.C(name))
closer = dontCloseAnything
} else {
collection, closer = mongo.CollectionFromName(db.raw, name)
}
// Apply model filtering.
if !info.global {
collection = &modelStateCollection{
WriteCollection: collection.Writeable(),
modelUUID: db.modelUUID,
}
}
// Prevent layer-breaking.
if !info.rawAccess {
// TODO(fwereade): it would be nice to tweak the mongo.Collection
// interface a bit to drop Writeable in this situation, but it's
// not convenient yet.
}
return collection, closer
}
// getCollectionFromDB returns the specified collection from the given
// database.
//
// An environment UUID must be provided so that environment filtering
// can be automatically applied if the collection stores data for
// multiple environments.
func getCollectionFromDB(db *mgo.Database, name, envUUID string) mongo.Collection {
collection := mongo.WrapCollection(db.C(name))
return newStateCollection(collection, envUUID)
}