Module: UniverseCompiler::Universe::Entities

Included in:
Base
Defined in:
lib/universe_compiler/universe/entities.rb

Instance Method Summary collapse

Instance Method Details

#<<(entity) ⇒ Object 



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# File 'lib/universe_compiler/universe/entities.rb', line 30

def <<(entity)
  add entity
  self
end

#add(entity) ⇒ Object

Raises:



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# File 'lib/universe_compiler/universe/entities.rb', line 10

def add(entity)
  raise UniverseCompiler::Error, 'An entity cannot be null !' if entity.nil?
  raise UniverseCompiler::Error, 'An entity must have a name !' unless entity.respond_to? :name
  raise UniverseCompiler::Error, 'An entity must have a name !' if entity.name.nil? or entity.name.empty?
  unless UniverseCompiler::Entity::TypeManagement.valid_for_type? entity
    entity.extend UniverseCompiler::Entity::TypeManagement
  end
  raise UniverseCompiler::Error, "An entity named '#{entity.name}' already exists with the type '#{entity.type}' !" if by_uniq_key.keys.include? [entity.type, entity.name]
  raise UniverseCompiler::Error, 'Invalid type specified' if entity.type.nil?
  raise UniverseCompiler::Error, 'Type cannot contain spaces' if entity.type =~ /\s/
  # Normally here the entity is valid
  # We add it to the universe and index it
  entities << entity
  if entity.respond_to? :'universe='
    entity.universe = self
  end
  index entity
  entity
end

#clear ⇒ Object 



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# File 'lib/universe_compiler/universe/entities.rb', line 109

def clear
  entities.clear
  clear_indices
end

#delete(entity) ⇒ Object 



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# File 'lib/universe_compiler/universe/entities.rb', line 35

def delete(entity)
  # Remove references to entity
  impacted_entities = {}
  entities.each do |e|
    e.class.fields_constraints.each do |field_name, constraints|
      if constraints.keys.include? :has_one
        if e[field_name] == entity
          e[field_name] = nil
          impacted_entities[e] ||= []
          impacted_entities[e] << field_name
        end
      end
      if constraints.keys.include? :has_many
        if e[field_name].include? entity
          e[field_name].delete entity
          impacted_entities[e] ||= []
          impacted_entities[e] << field_name unless impacted_entities[e].include? field_name
        end
      end
    end
  end
  # Then delete the entity
  entities.delete entity
  reindex_all entities
  unless impacted_entities.empty?
    UniverseCompiler.logger.warn "Impacts of '#{entity.as_path}' deletion:"
    impacted_entities.each do |k, v|
      UniverseCompiler.logger.warn " - '#{k.as_path}' fields : #{v.join ', '}"
    end
  end
  impacted_entities
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/universe_compiler/universe/entities.rb', line 6

def empty?
  entities.empty?
end

#replace(entity, by) ⇒ Object

Raises:



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# File 'lib/universe_compiler/universe/entities.rb', line 68

def replace(entity, by)
  raise UniverseCompiler::Error, "Wrong type, cannot replace '#{entity.as_path}' by '#{by.as_path}' !" unless entity.type == by.type
  raise UniverseCompiler::Error, "Cannot replace '#{entity.as_path}' with '#{by.as_path}' which is alreadyin the universe!" if entity.universe == by.universe

  # Change references to entity
  impacted_entities = {}
  entities.each do |e|
    e.class.fields_constraints.each do |field_name, constraints|
      if constraints.keys.include? :has_one
        if e[field_name] == entity
          e[field_name] = by
          impacted_entities[e] ||= []
          impacted_entities[e] << field_name
        end
      end
      if constraints.keys.include? :has_many
        if e[field_name].map! do |entity_list_item|
          if (entity == entity_list_item)
            impacted_entities[e] ||= []
            impacted_entities[e] << field_name unless impacted_entities[e].include? field_name
            by
          else
            entity_list_item
          end
        end
        end
      end
    end
  end
  # Then replace the entity
  entities[entities.index(entity)] = by
  reindex_all entities
  unless impacted_entities.empty?
    UniverseCompiler.logger.warn "Impacts of '#{entity.as_path}' deletion:"
    impacted_entities.each do |k, v|
      UniverseCompiler.logger.warn " - '#{k.as_path}' fields : #{v.join ', '}"
    end
  end
  impacted_entities
end