Class: Unimatrix::Resource

Inherits:

Object

• Object
• Unimatrix::Resource

Defined in:

lib/unimatrix/resource.rb

Direct Known Subclasses

Alchemist::ActivityProxy, Alchemist::Rendition, Alchemist::RenditionProfile, Alchemist::Text, Alchemist::Video, Alchemist::VideoEncoder, Analyst::Rule, Archivist::Artifact, Archivist::ArtifactLocator, Archivist::ArtifactRelationship, Archivist::Blueprint, Archivist::BlueprintAttribute, Archivist::Component, Authorization::Error, Authorization::Policy, Authorization::Resource, Authorization::ResourceOwner, Authorization::ResourceServer, Distributor::ActivityReference, DynamicResource, Error, Iris::Stream, Iris::StreamConverter, Iris::StreamEncoder, Iris::StreamInput, Iris::StreamOutput, Iris::StreamRecorder, Iris::StreamTranscriber, Iris::StreamTransformer, Iris::StreamTransmutator, Quartermaster::Binary, Quartermaster::BinaryIngressor, Unimatrix::Regent::Realm, Unimatrix::Regent::Setting, Zephyrus::Input, Zephyrus::Output, Zephyrus::Rendition

Class Method Summary

• .build(attributes = {}, associations = {}) ⇒ Object
• .field(name, options = {}) ⇒ Object
• .find_by_type_name(type_name) ⇒ Object
• .has_many(name, options = {}) ⇒ Object
• .has_one(name, options = {}) ⇒ Object
• .inherited(subclass) ⇒ Object
• .type_name ⇒ Object

Instance Method Summary

• #initialize(attributes = {}, associations = {}) {|_self| ... } ⇒ Resource constructor

  A new instance of Resource.

Constructor Details

#initialize(attributes = {}, associations = {}) {|_self| ... } ⇒ Resource

Returns a new instance of Resource.

Yields:

• (_self)

Yield Parameters:

• _self (Unimatrix::Resource) —

  the object that the method was called on

# File 'lib/unimatrix/resource.rb', line 84

def initialize( attributes={}, associations={} )

  self.nested_fields.each do | key, value |
    self.send( "#{ key }=", Struct.new( *value ).new )
  end

  self.type_name = self.class.name.split( '::' ).last.underscore rescue nil

  attributes.each do | key, value |
    send( "#{ key }=", value ) if self.respond_to?( "#{ key }=" )
  end

  associations.each do | key, value |
    self.instance_variable_set( "@_#{ key }", value )
  end

  yield self if block_given?

end

Class Method Details

.build(attributes = {}, associations = {}) ⇒ Object

# File 'lib/unimatrix/resource.rb', line 30

def build( attributes = {}, associations = {} )
  new( attributes.transform_keys( &:to_s ), associations )
end

.field(name, options = {}) ⇒ Object

# File 'lib/unimatrix/resource.rb', line 34

def field( name, options = {} )
  if name.is_a?( Hash )
    nested_field_key = name.keys.first
    self.nested_fields[ nested_field_key ] = name[ nested_field_key ]
    name = nested_field_key
  end

  self.fields[ name.to_sym ] = options.merge( name: name )
  class_eval(
    "def #{ name }(); " +
    "@#{ name }.is_a?( FalseClass ) ? @#{ name } : (" +
       "@#{ name } || " +
         ( options[ :default ].nil? ?
            "nil" :
            ( options[ :default ].is_a?( String ) ?
                "'#{ options[ :default ] }'" :
                  "#{ options[ :default ] }" ) ) + ");" +
    "end;" +
    " " +
    "attr_writer :#{ name };",
    __FILE__,
    __LINE__
  )
end

.find_by_type_name(type_name) ⇒ Object

# File 'lib/unimatrix/resource.rb', line 17

def find_by_type_name( type_name )
  @@descendants_by_type_name ||= begin
    result = {}
    descendants.each do | descendant |
      descendant_type_name = descendant.type_name
      result[ descendant_type_name ] = descendant \
        unless descendant_type_name.blank?
    end
    result
  end
  @@descendants_by_type_name[ type_name ]
end

.has_many(name, options = {}) ⇒ Object

# File 'lib/unimatrix/resource.rb', line 66

def has_many( name, options = {} )
  define_method name do
    self.instance_variable_get( "@_#{ name }" ) ||
    options[ :default ] || []
  end
end

.has_one(name, options = {}) ⇒ Object

# File 'lib/unimatrix/resource.rb', line 59

def has_one( name, options = {} )
  define_method name do
    associations = self.instance_variable_get( "@_#{ name.to_s.pluralize }" )
    associations.present? ? associations.first : options[ :default ]
  end
end

.inherited(subclass) ⇒ Object

# File 'lib/unimatrix/resource.rb', line 7

def inherited( subclass ) 
  @@descendants_by_type_name = nil 
  subclass.nested_fields = {}.merge( self.nested_fields )
  subclass.fields = {}.merge( self.fields )
end

.type_name ⇒ Object

# File 'lib/unimatrix/resource.rb', line 13

def type_name
  name.present? ? name.split( '::' ).last.underscore : nil
end