Class: ActiveOrient::Base

Inherits:
Object
  • Object
show all
Extended by:
ActiveModel::Callbacks, ActiveModel::Naming
Includes:
ActiveModel::Serialization, ActiveModel::Serializers::JSON, ActiveModel::Validations, OrientDB
Defined in:
lib/base.rb

Overview

Base class for tableless IB data Models, extends ActiveModel API

Direct Known Subclasses

Model

Constant Summary collapse

@@rid_store =

Every Rest::Base-Object is stored in the @@rid_store

The Objects are just references to the @@rid_store.
Any Change of the Object is thus synchonized to any allocated variable.

Hash.new

Constants included from OrientDB

OrientDB::DocumentDatabase, OrientDB::DocumentDatabasePool, OrientDB::DocumentDatabasePooled, OrientDB::GraphDatabase, OrientDB::IndexType, OrientDB::OClassImpl, OrientDB::OTraverse, OrientDB::PropertyImpl, OrientDB::RemoteStorage, OrientDB::SQLCommand, OrientDB::SQLSynchQuery, OrientDB::Schema, OrientDB::SchemaProxy, OrientDB::SchemaType, OrientDB::ServerAdmin, OrientDB::User, OrientDB::UsingJava

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attributes = {}, opts = {}) ⇒ Base

If a opts hash is given, keys are taken as attribute names, values as data. The model instance fields are then set automatically from the opts Hash.



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# File 'lib/base.rb', line 72

def initialize attributes = {}, opts = {}
  logger.progname = "ActiveOrient::Base#initialize"
  @metadata = HashWithIndifferentAccess.new
  @d =  nil
  run_callbacks :initialize do
	if RUBY_PLATFORM == 'java' && attributes.is_a?( Document )
	  @d = attributes
	  attributes =  @d.values
	  @metadata[:class]      = @d.class_name
	  @metadata[:version]    = @d.version
	  @metadata[:cluster], @metadata[:record] = @d.rid[1,@d.rid.size].split(':')



	end
	attributes.keys.each do |att|
	  unless att[0] == "@" # @ identifies Metadata-attributes
 att = att.to_sym if att.is_a?(String)
 unless self.class.instance_methods.detect{|x| x == att}
   self.class.define_property att, nil
 else
   #logger.info{"Property #{att.to_s} NOT assigned"}
 end
	  end
	end

	if attributes['@type'] == 'd'  # document via REST
	  @metadata[:type]       = attributes.delete '@type'
	  @metadata[:class]      = attributes.delete '@class'
	  @metadata[:version]    = attributes.delete '@version'
	  @metadata[:fieldTypes] = attributes.delete '@fieldTypes'
	  if attributes.has_key?('@rid')
 rid = attributes.delete '@rid'
 cluster, record = rid[1,rid.size].split(':')
 @metadata[:cluster] = cluster.to_i
 @metadata[:record]  = record.to_i
	  end

	  if @metadata[:fieldTypes ].present? && (@metadata[:fieldTypes] =~ /=g/)
 @metadata[:edges] = { :in => [], :out => [] }
 edges = @metadata['fieldTypes'].split(',').find_all{|x| x=~/=g/}.map{|x| x.split('=').first}
	  #  puts "Detected EDGES: #{edges.inspect}"
 edges.each do |edge|
   operator, *base_edge = edge.split('_')
   base_edge = base_edge.join('_')
   @metadata[:edges][operator.to_sym] << base_edge
 end
	  #    unless self.class.instance_methods.detect{|x| x == base_edge}
	  #      ## define two methods: out_{Edge}/in_{Edge} -> edge.
	  #      self.class.define_property base_edge, nil
	  #      allocate_edge_method = -> (edge)  do
	  #        unless (ee=db.get_db_superclass(edge)) == "E"
	  #          allocate_edge_method[ee]
	  #          self.class.send :alias_method, base_edge.underscore, edge
	  #      ## define inherented classes, tooa
	  #      

	  #    end
	  #  end
	  end
	end
	self.attributes = attributes # set_attribute_defaults is now after_init callback
  end
  #      puts "Storing #{self.rid} to rid-store"
  ActiveOrient::Base.store_rid self
end

Instance Attribute Details

#metadata ⇒ Object (readonly)

Used to read the metadata



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# File 'lib/base.rb', line 22

def metadata
  @metadata
end

Class Method Details

.attr_accessible(*args) ⇒ Object 



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# File 'lib/base.rb', line 225

def self.attr_accessible *args
end

.attr_protected(*args) ⇒ Object

Noop methods mocking ActiveRecord::Base macros



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# File 'lib/base.rb', line 222

def self.attr_protected *args
end

.belongs_to(model, *args) ⇒ Object

ActiveRecord::Base association API mocks



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# File 'lib/base.rb', line 230

def self.belongs_to model, *args
  attr_accessor model
end

.display_rid ⇒ Object 



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# File 'lib/base.rb', line 31

def self.display_rid
  @@rid_store
end

.get_rid(rid) ⇒ Object 



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# File 'lib/base.rb', line 39

def self.get_rid rid
  rid =  rid[1..-1] if rid[0]=='#'
  @@rid_store[rid] 
end

.has_many(models, *args) ⇒ Object 



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# File 'lib/base.rb', line 238

def self.has_many models, *args
  attr_accessor models
  define_method(models) do
    self.instance_variable_get("@#{models}") || self.instance_variable_set("@#{models}", [])
  end
end

.has_one(model, *args) ⇒ Object 



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# File 'lib/base.rb', line 234

def self.has_one model, *args
  attr_accessor model
end

.remove_rid(obj) ⇒ Object 



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# File 'lib/base.rb', line 35

def self.remove_rid obj
  @@rid_store.delete obj.rid
end

.reset_rid_store ⇒ Object 



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# File 'lib/base.rb', line 44

def self.reset_rid_store
  @@rid_store = Hash.new
end

.serialize(*properties) ⇒ Object

ActiveRecord::Base misc



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# File 'lib/base.rb', line 251

def self.serialize *properties
end

.store_rid(obj) ⇒ Object 



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# File 'lib/base.rb', line 48

def self.store_rid obj
  if obj.rid.present? && obj.rid.rid?
	  # return the presence of a stored object as true by the block
	  # the block is only executed if the presence is confirmed
	  # Nothing is returned from the class-method
   if @@rid_store[obj.rid].present?
     yield if block_given?
   end
   @@rid_store[obj.rid] = obj
   @@rid_store[obj.rid]  # return_value
  else
   obj # no rid-value: just return the obj
  end
end

Instance Method Details

#[](key) ⇒ Object

ActiveModel-style read/write_attribute accessors

Autoload mechanism and data conversion are defined in the method "from_orient" of each class



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# File 'lib/base.rb', line 167

def [] key
  iv = attributes[key.to_sym]
#      puts my_metadata( key: key) 
   if my_metadata( key: key) == "t"
#	puts "time detected"
	iv =~ /00:00:00/ ? Date.parse(iv) : DateTime.parse(iv)
  elsif my_metadata( key: key) == "x"
	iv = ActiveOrient::Model.autoload_object iv
  elsif iv.is_a? Array
	  OrientSupport::Array.new( work_on: self, work_with: iv.from_orient){ key.to_sym }
 elsif iv.is_a? Hash
	  OrientSupport::Hash.new( self, iv){ key.to_sym }
#     elsif iv.is_a? RecordMap 
 #      iv
#       puts "RecordSet detected"
  else
	iv.from_orient
  end
end

#[]=(key, val) ⇒ Object 



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# File 'lib/base.rb', line 187

def []= key, val
#      puts "here I am: #{key}, #{val}"
  val = val.rid if val.is_a?( ActiveOrient::Model ) && val.rid.rid?
  attributes[key.to_sym] = case val
      when Array
#				 puts "I am an Array"
 if val.first.is_a?(Hash)
   v = val.map do |x|
     if x.is_a?(Hash)
       HashWithIndifferentAccess.new(x)
     else
       x
     end
   end
   OrientSupport::Array.new(work_on: self, work_with: v )
 else
   OrientSupport::Array.new(work_on: self, work_with: val )
 end
      when Hash
 HashWithIndifferentAccess.new(val)
      else
 val
      end
end

#attributes ⇒ Object

ActiveModel API (for serialization)



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# File 'lib/base.rb', line 141

def attributes
  @attributes ||= HashWithIndifferentAccess.new
end

#attributes=(attrs) ⇒ Object 



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# File 'lib/base.rb', line 145

def attributes= attrs
  attrs.keys.each{|key| self.send("#{key}=", attrs[key])}
end

#document ⇒ Object 



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# File 'lib/base.rb', line 63

def document
  @d
end

#my_metadata(key: nil, symbol: nil) ⇒ Object 



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# File 'lib/base.rb', line 149

def my_metadata key: nil, symbol: nil
  if @metadata[:fieldTypes].present?  
	meta= Hash[ @metadata['fieldTypes'].split(',').map{|x| x.split '='} ]
	if key.present?
	  meta[key.to_s]
	elsif symbol.present?
	  meta.map{|x,y| x if y == symbol.to_s }.compact
	else
	  meta
	end
  end
end

#to_model ⇒ Object 



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# File 'lib/base.rb', line 216

def to_model
  self
end

#update_attribute(key, value) ⇒ Object 



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# File 'lib/base.rb', line 212

def update_attribute key, value
  @attributes[key] = value
end