Class: Momomoto::Datatype::Time_without_time_zone

Inherits:
Base
  • Object
show all
Defined in:
lib/momomoto/datatype/time_without_time_zone.rb

Overview

Represents the data type Time without time zone.

Direct Known Subclasses

Interval, Time_with_time_zone

Instance Method Summary collapse

Methods inherited from Base

#compile_rule, #default, #default_operator, #initialize, #not_null?, operator_sign

Constructor Details

This class inherits a constructor from Momomoto::Datatype::Base

Instance Method Details

#equal(a, b) ⇒ Object

Compares two values and returns true if equal or false otherwise. It is used to check if a row field has been changed so that only changed fields are written to database. Escapes before comparing.



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# File 'lib/momomoto/datatype/time_without_time_zone.rb', line 14

def equal( a, b )
  escape(a) == escape(b)
end

#escape(value) ⇒ Object

Escapes value to be saved in database. Returns ‘NULL’ if value is nil.



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# File 'lib/momomoto/datatype/time_without_time_zone.rb', line 20

def escape( value )
  case value
    when nil then 'NULL'
    when String then Database.quote(value)
    else Database.quote(value.strftime('%H:%M:%S'))
  end
end

#filter_set(value) ⇒ Object

Values are filtered by this function when being set. Returns an instance of Time or nil if value is nil or empty.



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# File 'lib/momomoto/datatype/time_without_time_zone.rb', line 30

def filter_set( value )
  case value
    when nil, '' then nil
    when ::Time then value
    when String then ::Time.parse( value )
    else raise Error
  end
 rescue => e
  raise ConversionError, 'Error while parsing time'
end