Class: Activecube::Processor::Composer

Inherits:
Object
  • Object
show all
Defined in:
lib/activecube/processor/composer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cube_query) ⇒ Composer

Returns a new instance of Composer.



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# File 'lib/activecube/processor/composer.rb', line 11

def initialize cube_query
  @cube_query = cube_query
end

Instance Attribute Details

#cube_query ⇒ Object (readonly)

Returns the value of attribute cube_query.



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# File 'lib/activecube/processor/composer.rb', line 10

def cube_query
  @cube_query
end

#models ⇒ Object (readonly)

Returns the value of attribute models.



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# File 'lib/activecube/processor/composer.rb', line 10

def models
  @models
end

#query ⇒ Object (readonly)

Returns the value of attribute query.



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# File 'lib/activecube/processor/composer.rb', line 10

def query
  @query
end

Instance Method Details

#build_query ⇒ Object 



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# File 'lib/activecube/processor/composer.rb', line 15

def build_query
  @query = compose_queries optimize! ranked_tables
end

#connection ⇒ Object 



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# File 'lib/activecube/processor/composer.rb', line 19

def connection
  connections = models.map(&:connection).compact.uniq
  raise "No connection found for query" if connections.empty?
  raise "Tables #{models.map(&:name).join(',')} mapped to multiple connections, can not query" if connections.count>1
  connections.first
end