module SdbDal
require File.dirname(__FILE__) +'/sdb_formatter.rb'
class DomainAttributeDescription
    include SdbFormatter
  attr_accessor :name 
  attr_accessor :value_type 
  attr_accessor :is_primary_key
  attr_accessor :is_collection
  
    
  def initialize(name,type,options)
    self.name=name
    self.value_type=type
    self.is_collection=(type==:reference_set)
    self.is_collection ||= ( options.has_key?(:is_collection) and options[:is_collection])
    
    self.is_primary_key=options.has_key?(:is_primary_key)  && options[:is_primary_key]==true
  end
  def is_clob
    return self.value_type==:clob
  end
  def format_for_sdb(value)
      return format_for_sdb_single( value) unless self.is_collection==true
       result=[]
       value.each do |single_value|
           result<<format_for_sdb_single( single_value)
       end
       result
  end
  def format_for_sdb_single(value)
    return nil if value == nil && self.value_type!=:boolean
      if self.value_type==:integer
        return format_integer(value)
      elsif self.value_type==:reference_set
          return format_reference_set(value)     
      elsif self.value_type==:date
          return format_date(value)     
      elsif self.value_type==:boolean
          return format_boolean(value)     
      elsif self.value_type==:unsigned_integer
             return format_unsigned_integer(value)    
      elsif self.value_type==:float
            return format_float(value)
      
      else
            return format_string(value.to_s)
      end
      
  end
   def parse_from_sdb( value)
       return parse_from_sdb_single( value) unless self.is_collection==true
        return [] unless value 
     
       result=[]
       value.each do |single_value|
           result<<parse_from_sdb_single( single_value)
       end
       result
   end
   def parse_from_sdb_single( value)
        
       return nil if value==nil 
     
       
       if self.value_type==:integer
        return parse_integer(value)
      elsif self.value_type==:date
          return parse_date(value)     
      elsif self.value_type==:reference_set
          return parse_reference_set(value)     
      elsif self.value_type==:boolean
          return parse_boolean(value)     
      elsif self.value_type==:unsigned_integer
             return parse_unsigned_integer(value)    
      elsif self.value_type==:float
            return parse_float(value)
       else 
            return value.to_s
      end
      return value
    end
end
end