class Mongo::Operation::Commands::CollectionsInfo

A MongoDB operation to get a list of collections info in a database.

@example Create the collections info operation.

CollectionsInfo.new(:db_name => 'test-db')

Initialization:

param [ Hash ] spec The specifications for the collections info operation.

option spec :db_name [ String ] The name of the database whose collections
  info is requested.
option spec :options [ Hash ] Options for the operation.

@since 2.0.0

Public Instance Methods

execute(server) click to toggle source

Execute the operation.

@example Execute the operation.

operation.execute(server)

@param [ Mongo::Server ] server The server to send this operation to.

@return [ Result ] The operation response, if there is one.

@since 2.0.0

# File lib/mongo/operation/commands/collections_info.rb, line 49
def execute(server)
  if server.features.list_collections_enabled?
    ListCollections.new(spec).execute(server)
  else
    server.with_connection do |connection|
      Result.new(connection.dispatch([ message(server) ])).validate!
    end
  end
end

Private Instance Methods

query_coll() click to toggle source
# File lib/mongo/operation/commands/collections_info.rb, line 65
def query_coll
  Database::NAMESPACES
end
selector() click to toggle source
# File lib/mongo/operation/commands/collections_info.rb, line 61
def selector
  { :name => { '$not' => /system\.|\$/ } }
end