# -----------------------------------------------------------------------------
# 
# Mysqlgeo adapter for ActiveRecord
# 
# -----------------------------------------------------------------------------
# Copyright 2010 Daniel Azuma
# 
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# 
# * Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
# * Neither the name of the copyright holder, nor the names of any other
#   contributors to this software, may be used to endorse or promote products
#   derived from this software without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# -----------------------------------------------------------------------------
;


require 'active_record'


module ActiveRecord  # :nodoc:
  
  class Base  # :nodoc:
    
    self.attribute_types_cached_by_default << :geometry
    
    class_attribute :rgeo_default_factory, :instance_writer => false
    self.rgeo_default_factory = nil
    
    class_attribute :rgeo_factory_generator, :instance_writer => false
    self.rgeo_factory_generator = nil
    
    def self.to_generate_rgeo_factory(&block_)
      self.rgeo_factory_generator = block_
    end
    
    class << self
      
      alias_method :columns_without_rgeo_modification, :columns
      def columns
        unless defined?(@columns) && @columns
          columns_without_rgeo_modification.each do |column_|
            column_.ar_class = self if column_.respond_to?(:ar_class=)
          end
        end
        @columns
      end
      
    end
    
  end
  
end