def filter( self, **kwargs ):
'''Filter item berdasarkan kunci :kwargs.
hanya untuk relasi jenis one-to-many dan many-to-many.
return:
SuperDocList
'''
if self._type is 'one-to-one':
raise RelationError, "this function only for one-to-many and or many-to-many relation"
if not self.__ready_db_read(): return None
_cond = self.__get_where_clause()
if not _cond: return None
if len(kwargs) > 0:
_cond.update( parse_query( kwargs ) )
if self._parent_class._echo == True:
print 'query: %s' % repr(_cond)
rel_class = self._get_rel_class()
rv = SuperDocList (
DocList( self._parent_class._monga,
rel_class,
self._parent_class._monga._db[rel_class._collection_name].find( _cond )
),
self._polymorphic
)
if self._order != None:
rv = rv.sort( **self._order )
return rv
def reload(self):
'''Load data dari db.
the rule is... masupin dulu ke cache, cache dialokasikan sebesar
jumlah item di dalamnya dan di-null-kan, tetapi baru di isi dengan max 10 item dulu,
yg lainnya nyusul bergantung permintaan dari user.
'''
if not self.__ready_db_read(): return None
if self._parent_class._saved() == False: return None
self._old_hash = self._current_hash
_cond = self.__get_where_clause()
if self._parent_class._echo == True:
print 'query: %s' % repr(_cond)
if not _cond: return None
rel_class = self._get_rel_class()
if self.listmode:
rv = SuperDocList (
DocList(
self._parent_class._monga,
rel_class,
self._parent_class._monga._db[rel_class._collection_name].find( _cond )
),
self._polymorphic
)
# alokasikan null memory sebesar jumlah item pada db
if self._order != None:
cached_data = rv.sort( **self._order ).limit(10).all() # maximum to 10...
else:
cached_data = rv.sort(_id=1).limit(10).all() # maximum to 10...
if rv.count() > 10:
cached_data += [ None for x in xrange(0,rv.count() - 10) ]
self.__dict__['_cached_repr'] = cached_data
self.__dict__['_data'] = SuperDocList (
DocList(
self._parent_class._monga,
rel_class,
self._parent_class._monga._db[rel_class._collection_name].find( _cond )
),
self._polymorphic
)
if self._order != None:
return self.__dict__['_data'].sort( **self._order )
return self.__dict__['_data']
# single mode one-to-one type
rv = self._parent_class._monga._db[rel_class._collection_name].find_one( _cond )
self.__dict__['_data'] = rv and rel_class( self._parent_class._monga, **dictarg(rv) ) or None
return self.__dict__['_data']
