Class: GraphQL::Dataloader::NullDataloader

Inherits:

GraphQL::Dataloader

• Object
• GraphQL::Dataloader
• GraphQL::Dataloader::NullDataloader

Defined in:

lib/graphql/dataloader/null_dataloader.rb

Overview

The default implementation of dataloading – all no-ops.

The Dataloader interface isn’t public, but it enables simple internal code while adding the option to add Dataloader.

Constant Summary

Constants inherited from GraphQL::Dataloader

AsyncDataloader

Instance Method Summary

• #append_job ⇒ Object
• #run ⇒ Object

  These are all no-ops because code was executed sychronously.

• #run_isolated ⇒ Object
• #yield ⇒ Object

Methods inherited from GraphQL::Dataloader

#initialize, #join_queues, #nonblocking?, use, #with, with_dataloading

Constructor Details

This class inherits a constructor from GraphQL::Dataloader

Instance Method Details

#append_job ⇒ Object

# File 'lib/graphql/dataloader/null_dataloader.rb', line 18

def append_job
  yield
  nil
end

#run ⇒ Object

These are all no-ops because code was executed sychronously.

# File 'lib/graphql/dataloader/null_dataloader.rb', line 12

def run; end

#run_isolated ⇒ Object

# File 'lib/graphql/dataloader/null_dataloader.rb', line 13

def run_isolated; yield; end

#yield ⇒ Object

Raises:

• (GraphQL::Error)

# File 'lib/graphql/dataloader/null_dataloader.rb', line 14

def yield
  raise GraphQL::Error, "GraphQL::Dataloader is not running -- add `use GraphQL::Dataloader` to your schema to use Dataloader sources."
end