Class: ActiveOrient::Base

Inherits:
Object
  • Object
show all
Extended by:
ActiveModel::Callbacks, ActiveModel::Naming
Includes:
ActiveModel::Serialization, ActiveModel::Serializers::JSON, ActiveModel::Serializers::Xml, 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 68

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/)
 edges = @metadata['fieldTypes'].split(',').find_all{|x| x=~/=g/}.map{|x| x.split('=').first}
 edges.each do |edge|
   operator, *base_edge = edge.split('_')
   base_edge = base_edge.join('_')
   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
    self.class.send :alias_method, base_edge.underscore, edge
   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 192

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 189

def self.attr_protected *args
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

.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

.serialize(*properties) ⇒ Object

ActiveRecord::Base association API mocks

def self.belongs_to model, *args
  attr_accessor model
end

def self.has_one model, *args
  attr_accessor model
end

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

def self.find *args
  []
end

ActiveRecord::Base misc



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# File 'lib/base.rb', line 218

def self.serialize *properties
end

.store_rid(obj) ⇒ Object 



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

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 140

def [] key
  iv = attributes[key.to_sym]
  if @metadata[:fieldTypes].present? && @metadata[:fieldTypes].include?(key.to_s+"=t")
  iv =~ /00:00:00/ ? Date.parse(iv) : DateTime.parse(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 156

def []= key, val
  val = val.rid if val.is_a?( ActiveOrient::Model ) && val.rid.rid?
  attributes[key.to_sym] = case val
      when 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 127

def attributes
  @attributes ||= HashWithIndifferentAccess.new
end

#attributes=(attrs) ⇒ Object 



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# File 'lib/base.rb', line 131

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

#document ⇒ Object 



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# File 'lib/base.rb', line 59

def document
  @d
end

#to_model ⇒ Object 



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# File 'lib/base.rb', line 183

def to_model
  self
end

#update_attribute(key, value) ⇒ Object 



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# File 'lib/base.rb', line 179

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