func (et *TableEntityType) LoadByCode(dbrSess *dbr.Session, code string, cbs ...csdb.DbrSelectCb) error {
	s, err := TableCollection.Structure(TableIndexEntityType)
	if err != nil {
		return errgo.Mask(err)
	}
	sb := dbrSess.Select(s.AllColumnAliasQuote(csdb.MainTable)...).From(s.Name, csdb.MainTable).Where("entity_type_code = ?", code)
	for _, cb := range cbs {
		sb = cb(sb)
	}
	return errgo.Mask(sb.LoadStruct(et))
}

func InitEntityStoreMap(dbrSess *dbr.Session) error {
	if atomic.LoadUint32(&initMapDone.done) == 1 {
		return ErrStoreMapInitialized
	}

	initMapDone.m.Lock()
	defer initMapDone.m.Unlock()
	if initMapDone.done == 0 {
		defer atomic.StoreUint32(&initMapDone.done, 1)

		s, err := TableCollection.Structure(TableIndexEntityStore)
		if err != nil {
			return errgo.Mask(err)
		}
		var ess TableEntityStoreSlice
		_, err = dbrSess.
			Select(s.Columns.FieldNames()...).
			From(s.Name).
			LoadStructs(&ess)
		if err != nil {
			return errgo.Mask(err)
		}

		for _, es := range ess {
			EntityStoreMap.Set(es.EntityTypeID, es.StoreID, es)
		}

		ess = ess[:len(ess)-1] // delete Struct Slice https://code.google.com/p/go-wiki/wiki/SliceTricks
		return nil
	}
	return ErrStoreMapInitialized
}

// getEntityTypeData retrieves all EAV models from table eav_entity_type but only those listed in variable
// codegen.ConfigEntityType. It then applies the mapping data from codegen.ConfigEntityType to the entity_type struct.
// Depends on generated code from tableToStruct.
func getEntityTypeData(dbrSess *dbr.Session) (etc eav.TableEntityTypeSlice, err error) {

	s, err := eav.TableCollection.Structure(eav.TableIndexEntityType)
	if err != nil {
		return nil, errgo.Mask(err)
	}

	_, err = dbrSess.
		Select(s.AllColumnAliasQuote(s.Name)...).
		From(s.Name).
		Where("entity_type_code IN ?", codegen.ConfigEntityType.Keys()).
		LoadStructs(&etc)
	if err != nil {
		return nil, errgo.Mask(err)
	}

	for typeCode, mapData := range codegen.ConfigEntityType {
		// map the fields from the config struct to the data retrieved from the database.
		et, err := etc.GetByCode(typeCode)
		codegen.LogFatal(err)
		et.EntityModel = codegen.ParseString(mapData.EntityModel, et)
		et.AttributeModel.String = codegen.ParseString(mapData.AttributeModel, et)
		et.EntityTable.String = codegen.ParseString(mapData.EntityTable, et)
		et.IncrementModel.String = codegen.ParseString(mapData.IncrementModel, et)
		et.AdditionalAttributeTable.String = codegen.ParseString(mapData.AdditionalAttributeTable, et)
		et.EntityAttributeCollection.String = codegen.ParseString(mapData.EntityAttributeCollection, et)
	}

	return etc, nil
}