Package demo contains minimal demo for 'mapper' package.

ErrNoSuchJob is returned by GetJob if there's no Job with requested ID.

Controller is responsible for starting, progressing and finishing mapping jobs.

Job is datastore representation of a mapping job (either active or not).

JobConfig defines what a new mapping job should do.

Information about a job.

Query is a representation of datastore queries supported by the mapper.

Information about some single shard of a job.

Factory knows how to construct instances of Mapper.

ID identifies a mapper registered in the controller.

JobID identifies a mapping job.

Mapper applies some function to the given slice of entities, given by their keys.

State of a job or one of its shards.