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module Martyr
module Runtime
class BaseFactScope
attr_reader :fact_definition, :scope
delegate :name, :supports_metric?, :supports_dimension_level?, :dimensions, to: :fact_definition
# = Scope accessors
# @param fact_definition [Schema::MainFactDefinition]
def initialize(fact_definition)
@fact_definition = fact_definition
@scope = fact_definition.scope
end
def run_scope
@_run_scope ||= scope.call
end
def scope_sql
run_scope.try(:to_sql)
end
def null?
@scope.is_a?(NullScope)
end
def set_null_scope
@scope = NullScope.new
end
# @return [String] how to add a where condition to the level
def level_key_for_where(level_id)
fact_definition.find_level_association(level_id).fact_key
end
# = Scope support check
# = Scope updater
# Decorator pattern. The block must return a new scope.
# @example
# Let @scope be: -> { Invoice.all }
#
# decorate_scope {|scope| scope.where(id: 5)}
#
# @scope is now: -> { ->{ Invoice.all }.call.where(id: 5) }
#
# decorate_scope {|scope| scope.where.not(id: 7)}
#
# @scope is now: -> { -> { ->{ Invoice.all }.call.where(id: 5) }.call.where.not(id: 7) }
#
def decorate_scope(&block)
return if null?
original_scope = self.scope
@scope = Proc.new do
block.call(original_scope.call, self)
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems