Class: ActiveFacts::Metamodel::DataType::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/activefacts/metamodel/datatypes.rb

Overview

A DataType Context class should refine this class. The default context might work for you.

Direct Known Subclasses

DefaultContext

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Context

Returns a new instance of Context.



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# File 'lib/activefacts/metamodel/datatypes.rb', line 66

def initialize options = {}
  raise "Unused options in DataType::Context: #{options.inspect}" unless options.empty?
end

Instance Method Details

#boolean_type ⇒ Object 



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# File 'lib/activefacts/metamodel/datatypes.rb', line 82

def boolean_type
end

#choose_integer_range(min, max) ⇒ Object 



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# File 'lib/activefacts/metamodel/datatypes.rb', line 76

def choose_integer_range min, max
  integer_ranges.
    select{|type_name, vmin, vmax| min >= vmin && max <= vmax}.
    sort_by{|type_name, vmin, vmax| vmax-vmin}[0]   # Choose the smallest range
end

#default_length(data_type, type_name) ⇒ Object 



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# File 'lib/activefacts/metamodel/datatypes.rb', line 73

def default_length data_type, type_name
end

#integer_ranges ⇒ Object 



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# File 'lib/activefacts/metamodel/datatypes.rb', line 70

def integer_ranges
end

#surrogate_type ⇒ Object 



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# File 'lib/activefacts/metamodel/datatypes.rb', line 85

def surrogate_type
end