Class: Itiel::Lookup::DatabaseTable

Inherits:
Object
  • Object
show all
Includes:
DB::SQLConnectable, ChainedStep, HashLookup
Defined in:
lib/itiel/lookup/database_table.rb

Overview

Joins the main data stream with another lookup stream and appends the specified columns from the lookup stream to the input stream.

Example:

Set up a lookup to the authors table:

Join the “author_name” column on the input stream with the “name” column in the lookup stream.

Join the “id” column in the lookup stream as “author_id”

Instance Attribute Summary collapse

Attributes included from DB::SQLConnectable

#connection, #connection_file_path

Attributes included from HashLookup

#joined_columns, #lookup_columns

Instance Method Summary collapse

Methods included from DB::SQLConnectable

included

Methods included from HashLookup

#empty_joined_columns, #lookup!, #lookup_stream

Methods included from ChainedStep

included

Instance Attribute Details

#table_name ⇒ Object

Returns the value of attribute table_name.



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# File 'lib/itiel/lookup/database_table.rb', line 28

def table_name
  @table_name
end

Instance Method Details

#lookup_source ⇒ Object 



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# File 'lib/itiel/lookup/database_table.rb', line 30

def lookup_source
  db = self.class.sequel_connection(connection)
  db[table_name.to_sym.to_sym].all
end