Module: Remi::DataSubject::DataSource

Included in:
Remi::DataSource::CsvFile, Remi::DataSource::DataFrame, Remi::DataSource::Postgres, Remi::DataSource::Salesforce
Defined in:
lib/remi/data_subject.rb

Instance Method Summary collapse

Instance Method Details

#df ⇒ Object

Public: Access the dataframe from a DataSource

Returns a Remi::DataFrame



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# File 'lib/remi/data_subject.rb', line 37

def df
  @dataframe ||= to_dataframe
end

#extract ⇒ Object

Public: Memoized version of extract!



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# File 'lib/remi/data_subject.rb', line 42

def extract
  @extract ||= extract!
end

#extract! ⇒ Object

Public: Called to extract data from the source.

Returns data in a format that can be used to create a dataframe.

Raises:

  • (NoMethodError) 


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# File 'lib/remi/data_subject.rb', line 49

def extract!
  raise NoMethodError, "#{__method__} not defined for #{self.class.name}"
  @extract
end

#to_dataframe ⇒ Object

Public: Converts extracted data to a dataframe

Returns a Remi::DataFrame

Raises:

  • (NoMethodError) 


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# File 'lib/remi/data_subject.rb', line 57

def to_dataframe
  raise NoMethodError, "#{__method__} not defined for #{self.class.name}"
end