class Activecube::Processor::Table

Attributes

model[R]

Public Class Methods

new(model) click to toggle source
# File lib/activecube/processor/table.rb, line 6
def initialize model
  @model = model
end

Public Instance Methods

join(cube_query, left_query, right_query) click to toggle source
# File lib/activecube/processor/table.rb, line 35
def join cube_query, left_query, right_query

  outer_table = model.arel_table.class.new('').project(Arel.star)

  dimension_names = (cube_query.join_fields + cube_query.slices.map{|s| s.key} ).uniq

  query = outer_table.from(left_query).
      join(right_query, ::Arel::Nodes::FullOuterJoin).
      using(*dimension_names)

  cube_query.options.each do |option|
    query = option.append_query model, cube_query, outer_table, query
  end


  query
end
matches?(query, measures = query.measures) click to toggle source
# File lib/activecube/processor/table.rb, line 14
def matches? query, measures = query.measures
  (query.column_names(measures)-model.attribute_types.keys).empty? &&
      !model.activecube_indexes.detect{|index| !index.matches?(query, measures) }
end
measures?(measure) click to toggle source
# File lib/activecube/processor/table.rb, line 19
def measures? measure
  (measure.required_column_names - model.attribute_types.keys).empty?
end
name() click to toggle source
# File lib/activecube/processor/table.rb, line 10
def name
  model.table_name
end
query(cube_query) click to toggle source
# File lib/activecube/processor/table.rb, line 23
def query cube_query

  table = model.arel_table
  query = table

  (cube_query.slices + cube_query.measures + cube_query.selectors + cube_query.options).each do |s|
    query = s.append_query model, cube_query, table, query
  end

  query
end