Module: Mondrian::REST::APIHelpers

Defined in:
lib/mondrian_rest/api_helpers.rb

Constant Summary collapse

@@olap = 
nil
@@mdx_parser = 
nil

Instance Method Summary collapse

Instance Method Details

#get_cube_or_404(name) ⇒ Object 



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# File 'lib/mondrian_rest/api_helpers.rb', line 33

def get_cube_or_404(name)
  cube = olap.cube(name)
  error!('Not found', 404) if cube.nil?
  cube
end

#mdx(query) ⇒ Object 



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# File 'lib/mondrian_rest/api_helpers.rb', line 39

def mdx(query)
  logger.info("Executing MDX query #{query}")
  begin
    result = olap.execute query
    return result
  rescue Mondrian::OLAP::Error => st
    error!({error: st.backtrace}, 400)
  end
end

#mdx_parser ⇒ Object

Returns an instance of org.olap4j.mdx.parser.MdxParser



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# File 'lib/mondrian_rest/api_helpers.rb', line 17

def mdx_parser
  if @@mdx_parser.nil?
    @@mdx_parser = olap.raw_connection.getParserFactory
                   .createMdxParser(olap.raw_connection)
  end
  @@mdx_parser
end

#olap ⇒ Object 



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# File 'lib/mondrian_rest/api_helpers.rb', line 7

def olap
  if @@olap.nil?
    @@olap = Mondrian::OLAP::Connection.new(env['mondrian-olap.params'])
    @@olap.connect
  end
  @@olap
end

#olap_flush ⇒ Object 



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# File 'lib/mondrian_rest/api_helpers.rb', line 25

def olap_flush
  if olap.connected?
    olap.flush_schema_cache
    olap.close
  end
  olap.connect
end