Class: Momomoto::Base

Inherits:
Object
  • Object
show all
Defined in:
lib/momomoto/base.rb

Overview

Momomoto base class for Table and Procedure

Direct Known Subclasses

Procedure, Table

Class Method Summary collapse

Class Method Details

.initialize ⇒ Object 



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# File 'lib/momomoto/base.rb', line 125

def initialize
  return if initialized

  @schema_name ||= construct_schema_name( self.name )
  @logical_operator ||= 'AND'

  self.initialized = true
end

.logical_operator=(value) ⇒ Object

Set the default logical operator for constraints. AND and OR are supported. See Table#select for usage of logical operators.



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# File 'lib/momomoto/base.rb', line 150

def logical_operator=( value )
  @logical_operator = case value
    when /and/i then "AND"
    when /or/i then "OR"
    else raise Momomoto::Error, "Unsupported logical operator"
  end
end

.momomoto_attribute(name) ⇒ Object 



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# File 'lib/momomoto/base.rb', line 106

def momomoto_attribute( name )
  singleton = self.instance_eval{class << self; self; end}
  varname = "@#{name}"
  settername = "#{name}="
  # define getter method
  singleton.send(:define_method, name) do | *values |
    if values[0]
      send( settername, values[0] )
    else
      initialize if not initialized
      instance_variable_get( varname )
    end
  end
  # define setter method
  singleton.send(:define_method, settername) do | value |
    instance_variable_set( varname, value )
  end
end

.momomoto_attribute_reader(name) ⇒ Object 



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# File 'lib/momomoto/base.rb', line 96

def momomoto_attribute_reader( name )
  singleton = self.instance_eval{class << self; self; end}
  varname = "@#{name}"
  # define getter method
  singleton.send(:define_method, name) do | *values |
    initialize if not initialized
    instance_variable_get( varname )
  end
end