Class: Connect::Datasources::Base

Inherits:

Object

• Object
• Connect::Datasources::Base

Defined in:

lib/connect/datasources/base.rb

Overview

This a a base level class for all datasources. A Datasources allows you to import data from an other source into connect. A datasource must implement the ‘lookup(name)` method. This method must return a value. A value can be any of:

• Integer

• Float

• String

• Array

• Hash

• Bolean

Instance Method Summary

• #initialize(_name, *_arguments) ⇒ Datasource::Base constructor

  The initializer is called by the parser.

• #lookup(_key) ⇒ Object

  The lookup method is called for every variable in a import block “‘ import from datasource(param1, param2) do.…

Constructor Details

#initialize(_name, *_arguments) ⇒ Datasource::Base

The initializer is called by the parser. When the parser encounters a “‘ import from datasource(param1, param2) do.… “` The a datasource is instantiated. The params are passed as params to the ` initialize` function.

Parameters:

• _name (String) —

  The name of the datasource.

• _arguments (Array) —

  The arguments passed by the parser.

# File 'lib/connect/datasources/base.rb', line 28

def initialize(_name, *_arguments)
end

Instance Method Details

#lookup(_key) ⇒ Object

The lookup method is called for every variable in a import block “‘ import from datasource(param1, param2) do.…

value1 = 'lookup_1'
value2 = 'lookp_2'

“‘ will call lookup twice.

Parameters:

• _key (String) —

  The key to lookup in the current datasource

Returns:

• The value of the key in the external datasource

# File 'lib/connect/datasources/base.rb', line 44

def lookup(_key)
  fail ArgumentError, 'lookup method needs to be overridden in datasource'
end