NewDatabase constructs a Database compliant value from the database plugin registered.

NewMappingReader constructs a MappingsReader instance.

NewMappingWriter creates an instance of MappingsWriter.

NewQueryReader constructs a QueryReader from the given configuration and database.

NewQueryWriter creates a QueryWriter instance.

ErrCreateRevisionNotAllowed is returned when trying to write a query revision on a query stored on local or env.

ErrSetResourceMappingNotAllowed is returned when trying to write a resource mapping on a resource stored on local or env.

MappingsReader fetch indexed mappings from database, configuration file and environment variable.

MappingsWriter is the entity that maps resource name to URL.

A QueryReader get a query from local configuration file or a database instance.

QueryWriter is the entity that create a new query revision when it is stored on the database.

Database defines the operations exposed by an external store.