Class: ExistDB::Dom::ActiveRecord

Inherits:
Object
  • Object
show all
Includes:
Convertible
Defined in:
lib/existdb/dom/active_record.rb

Overview

Inspired by Rails ActiveRecord Because we cannot make assumptions about the structure of XML this must inspect the dom when descending into each node. For large well structured documents a mapper pattern where the structure is defined in the class would be more efficient.

Defined Under Namespace

Modules: Convertible, NodeArray

Instance Method Summary collapse

Constructor Details

#initialize(resource) ⇒ ActiveRecord

Returns a new instance of ActiveRecord.



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# File 'lib/existdb/dom/active_record.rb', line 49

def initialize(resource)
    @dom = resource.respond_to?(:dom) ? resource.dom : resource
    @children = Hash.new
    @raw = Hash.new
    @dom.getChildNodes.each do |child|
        name = child.getNodeName.to_s.to_sym
        next if respond_to?(name)
        @raw[name] ||= Array.new
        @raw[name] << child
    end

    @raw.each_key do |name|
        if @raw[name].size > 1 then
            @raw[name].extend(NodeArray, Convertible)
            self.instance_eval %{
                def #{name}
                    @raw[#{name.inspect}]
                end
            }
        else
            @raw[name] = @raw[name].first
            self.instance_eval %{
                def #{name}
                    convert( @raw[#{name.inspect}] )
                end
            }
        end
    end

end