Class: OData::Entity

Inherits:
Object
  • Object
show all
Defined in:
lib/odata/entity.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Entity

Returns a new instance of Entity.



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# File 'lib/odata/entity.rb', line 5

def initialize(options = {})
  @type = options[:type]
  @namespace = options[:namespace]
end

Instance Attribute Details

#namespace ⇒ Object (readonly)

Returns the value of attribute namespace.



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# File 'lib/odata/entity.rb', line 3

def namespace
  @namespace
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/odata/entity.rb', line 3

def type
  @type
end

Class Method Details

.from_xml(xml_doc, options = {}) ⇒ Object 



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# File 'lib/odata/entity.rb', line 44

def self.from_xml(xml_doc, options = {})
  return nil if xml_doc.nil?
  entity = OData::Entity.new(options)
  entity.instance_eval do
    xml_doc.xpath('//content/properties/*').each do |property_xml|
      property_name = property_xml.name
      if property_xml.attributes['null'] &&
          property_xml.attributes['null'].value == 'true'
        value = nil
        value_type = service.get_property_type(name, property_name)
      else
        value_type = property_xml.attributes['type'].value
        value = property_xml.content
      end
      klass_name = value_type.gsub(/^Edm\./, '')
      property = Kernel.const_get("OData::Properties::#{klass_name}").new(property_name, value)
      set_property(property_name, property)
    end

    begin
      title_value = xml_doc.xpath('//title').first.content
      property_name = service.get_title_property_name(name)
      value_type = service.get_property_type(name, property_name)
      klass_name = value_type.gsub(/^Edm\./, '')
      property = Kernel.const_get("OData::Properties::#{klass_name}").new(property_name, title_value)
      set_property(property_name, property)
    end

    begin
      summary_value = xml_doc.xpath('//summary').first.content
      property_name = service.get_summary_property_name(name)
      value_type = service.get_property_type(name, property_name)
      klass_name = value_type.gsub(/^Edm\./, '')
      property = Kernel.const_get("OData::Properties::#{klass_name}").new(property_name, summary_value)
      set_property(property_name, property)
    end
  end
  entity
end

.with_properties(new_properties = {}, options = {}) ⇒ Object 



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# File 'lib/odata/entity.rb', line 30

def self.with_properties(new_properties = {}, options = {})
  entity = OData::Entity.new(options)
  entity.instance_eval do
    service.properties_for(name).each do |name, instance|
      set_property(name, instance)
    end

    new_properties.each do |property_name, property_value|
      self[property_name] = property_value
    end
  end
  entity
end

Instance Method Details

#[](property_name) ⇒ Object 



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# File 'lib/odata/entity.rb', line 14

def [](property_name)
  begin
   properties[property_name.to_s].value
  rescue NoMethodError
    raise ArgumentError, "Unknown property: #{property_name}"
  end
end

#[]=(property_name, value) ⇒ Object 



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# File 'lib/odata/entity.rb', line 22

def []=(property_name, value)
  begin
    properties[property_name.to_s].value = value
  rescue NoMethodError
    raise ArgumentError, "Unknown property: #{property_name}"
  end
end

#name ⇒ Object 



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# File 'lib/odata/entity.rb', line 10

def name
  @name ||= type.gsub(/#{namespace}\./, '')
end

#primary_key ⇒ Object 



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# File 'lib/odata/entity.rb', line 118

def primary_key
  service.primary_key_for(name)
end

#to_xml ⇒ Object 



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# File 'lib/odata/entity.rb', line 84

def to_xml
  builder = Nokogiri::XML::Builder.new do |xml|
    xml.entry('xmlns'           => 'http://www.w3.org/2005/Atom',
              'xmlns:data'      => 'http://schemas.microsoft.com/ado/2007/08/dataservices',
              'xmlns:metadata'  => 'http://schemas.microsoft.com/ado/2007/08/dataservices/metadata',
              'xmlns:georss'    => 'http://www.georss.org/georss',
              'xmlns:gml'       => 'http://www.opengis.net/gml',
              'xml:base'        => 'http://services.odata.org/OData/OData.svc/') do
      xml.category(term: "#{namespace}.#{type}",
                   scheme: 'http://schemas.microsoft.com/ado/2007/08/dataservices/scheme')
      xml.author { xml.name }

      xml.content(type: 'application/xml') do
        xml['metadata'].properties do
          properties.each do |name, property|
            next if name == primary_key
            attributes = {
              'metadata:type' => property.type,
            }

            if property.value.nil?
              attributes['metadata:null'] = 'true'
              xml['data'].send(name.to_sym, attributes)
            else
              xml['data'].send(name.to_sym, attributes, property.xml_value)
            end
          end
        end
      end
    end
  end
  builder.to_xml
end