Class: ODDB::Model

Inherits:
Object
  • Object
show all
Includes:
ODBA::Persistable, Yaml
Defined in:
lib/oddb/model.rb,
lib/oddb/model.rb,
lib/oddb/export/yaml.rb,
lib/oddb/persistence/og/model.rb,
lib/oddb/persistence/odba/model.rb,
lib/oddb/persistence/odba/export.rb

Overview

forward definitions (circular dependency Model <-> M10lDocument)

Defined Under Namespace

Classes: Predicate

Constant Summary

Constants included from OddbUri

OddbUri::YAML_URI

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ODBA::Persistable

#to_yaml_properties

Methods included from Yaml

append_features, #to_yaml_properties

Methods included from OddbUri

#to_yaml, #to_yaml_map, #to_yaml_type

Class Method Details

._serializables ⇒ Object 



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# File 'lib/oddb/persistence/odba/model.rb', line 51

def _serializables
  if((kls = ancestors.at(1)) && kls.respond_to?(:serializables))
    kls.serializables.dup
  else
    []
  end
end

.belongs_to(groupname, *predicates) ⇒ Object 



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# File 'lib/oddb/model.rb', line 38

def belongs_to(groupname, *predicates)
  attr_reader groupname
  varname = :"@#{groupname}"
  connections.push(varname)
  selfname = singular
  define_method("#{groupname}=") { |group|
    old = instance_variable_get(varname)
    if(old != group)
      if(old)
        old.send("remove_#{selfname}", self)
        old.save
      end
      if(group)
        group.send("add_#{selfname}", self)
        group.save
      end
    end
    instance_variable_set(varname, group)
  }
  predicates.each { |predicate|
    if(predicate.action == :method_missing)
      predicate.delegators.each { |key|
        define_method(key) { 
          if(group = instance_variable_get(varname))
            group.send(key)
          end
        }
      }
    else
      predicate.delegators.push(groupname)
      self.predicates.push(predicate)
    end
  }
end

.connections ⇒ Object 



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# File 'lib/oddb/model.rb', line 72

def connections
  @connections ||= []
end

.connector(key) ⇒ Object 



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# File 'lib/oddb/model.rb', line 75

def connector(key)
  connectors.push :"@#{key}"
end

.connectors ⇒ Object 



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# File 'lib/oddb/model.rb', line 78

def connectors
  @connectors ||= []
end

.delegates(*delegators) ⇒ Object 



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# File 'lib/oddb/model.rb', line 81

def delegates(*delegators)
  Predicate.new(:method_missing, :delegate, *delegators)
end

.find_by_uid(uid) ⇒ Object 



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# File 'lib/oddb/persistence/odba/model.rb', line 44

def find_by_uid(uid)
  obj = ODBA.cache.fetch(uid)
  obj if(obj.class == self)
end

.has_many(plural, *predicates) ⇒ Object 



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# File 'lib/oddb/model.rb', line 84

def has_many(plural, *predicates)
  varname = :"@#{plural}"
  define_method(plural) {
    instance_variable_get(varname) or begin
      instance_variable_set(varname, Array.new)
    end
  }
  define_method("add_#{plural.to_s.singular}") { |inst|
    container = self.send(plural)
    unless(container.any? { |other| inst.eql? other })
      container.push(inst) 
    end
    inst
  }
  define_method("remove_#{plural.to_s.singular}") { |inst|
    self.send(plural).delete_if { |other| inst.eql? other }
  }
  connectors.push(varname)
  predicates.each { |predicate|
    if(predicate.type == :delegate)
      predicate.delegators.each { |key|
        define_method(key) {
          self.send(plural).collect { |inst|
            inst.send(key)
          }.flatten
        }
      }
    else
      predicate.delegators.push(plural)
      self.predicates.push(predicate)
    end
  }
end

.is_coded ⇒ Object 



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# File 'lib/oddb/model.rb', line 126

def is_coded
  has_many :codes
  define_method(:code) { |*args|
    type, country = *args
    codes.find { |code| code.is_for?(type, country || ODDB.config.country) }
  }
end

.m10l_document(key) ⇒ Object 



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# File 'lib/oddb/model.rb', line 133

def m10l_document(key)
  varname = :"@#{key}"
  define_method(key) {
    instance_variable_get(varname) or begin
      instance_variable_set(varname, Util::M10lDocument.new)
    end
  }
  connectors.push varname
end

.multilingual(key) ⇒ Object 



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# File 'lib/oddb/model.rb', line 142

def multilingual(key)
  define_method(key) {
    instance_variable_get(:"@#{key}") or begin
      instance_variable_set(:"@#{key}", Util::Multilingual.new)
    end
  }
  define_method(:to_s) { 
    self.send(key).to_s
  }
end

.on_delete(action, *delegators) ⇒ Object 



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# File 'lib/oddb/model.rb', line 117

def on_delete(action, *delegators)
  Predicate.new(:delete, action, *delegators)
end

.on_save(action, *delegators) ⇒ Object 



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# File 'lib/oddb/model.rb', line 120

def on_save(action, *delegators)
  Predicate.new(:save, action, *delegators)
end

.predicates ⇒ Object 



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# File 'lib/oddb/model.rb', line 123

def predicates
  @predicates ||= []
end

.serializables ⇒ Object 



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# File 'lib/oddb/persistence/odba/model.rb', line 48

def serializables
  @serializables ||= _serializables
end

.serialize(*keys) ⇒ Object 



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# File 'lib/oddb/model.rb', line 155

def serialize(key)
end

.singular ⇒ Object 



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# File 'lib/oddb/model.rb', line 152

def singular
  basename.gsub(/([a-z])([A-Z])/, '\1_\2').downcase
end

Instance Method Details

#__odba_delete__ ⇒ Object 



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# File 'lib/oddb/persistence/odba/model.rb', line 10

def delete
  self.class.predicates.each { |predicate|
    predicate.execute(:delete, self)
  }
  self
end

#__odba_save__ ⇒ Object 



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# File 'lib/oddb/persistence/odba/model.rb', line 25

def save
  self.class.predicates.each { |predicate|
    predicate.execute(:save, self)
  }
  self
end

#data_origin(key) ⇒ Object 



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# File 'lib/oddb/model.rb', line 158

def data_origin(key)
  data_origins[key]
end

#data_origins ⇒ Object 



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# File 'lib/oddb/model.rb', line 161

def data_origins
  @data_origins ||= {}
end

#delete ⇒ Object 



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# File 'lib/oddb/model.rb', line 164

def delete
  self.class.predicates.each { |predicate|
    predicate.execute(:delete, self)
  }
  self
end

#odba_serializables ⇒ Object 



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# File 'lib/oddb/persistence/odba/model.rb', line 21

def odba_serializables
  super.concat self.class.serializables
end

#oid ⇒ Object 



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# File 'lib/oddb/persistence/odba/export.rb', line 22

def oid
  @odba_id
end

#save ⇒ Object 



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# File 'lib/oddb/model.rb', line 170

def save
  self.class.predicates.each { |predicate|
    predicate.execute(:save, self)
  }
  self
end

#saved? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/oddb/persistence/odba/model.rb', line 37

def saved?
  !odba_unsaved?
end