#NEWLINE# def Deserializer( file , metadata = None , scoped_session = None , engine = None ) : #NEWLINE# #INDENT# unpickler = pickle . Unpickler ( file ) #NEWLINE# def get_engine( ) : #NEWLINE# #INDENT# if engine : #NEWLINE# #INDENT# return engine #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( scoped_session and scoped_session ( ) . bind ) : #NEWLINE# #INDENT# return scoped_session ( ) . bind #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( metadata and metadata . bind ) : #NEWLINE# #INDENT# return metadata . bind #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# return None #NEWLINE# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# def persistent_load( id ) : #NEWLINE# #INDENT# m = our_ids . match ( text_type ( id ) ) #NEWLINE# if ( not m ) : #NEWLINE# #INDENT# return None #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# ( type_ , args ) = m . group ( 1 , 2 ) #NEWLINE# if ( type_ == 'attribute' ) : #NEWLINE# #INDENT# ( key , clsarg ) = args . split ( ':' ) #NEWLINE# cls = pickle . loads ( b64decode ( clsarg ) ) #NEWLINE# return getattr ( cls , key ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( type_ == 'mapper' ) : #NEWLINE# #INDENT# cls = pickle . loads ( b64decode ( args ) ) #NEWLINE# return class_mapper ( cls ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( type_ == 'mapperprop' ) : #NEWLINE# #INDENT# ( mapper , keyname ) = args . split ( ':' ) #NEWLINE# cls = pickle . loads ( b64decode ( mapper ) ) #NEWLINE# return class_mapper ( cls ) . attrs [ keyname ] #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( type_ == 'table' ) : #NEWLINE# #INDENT# return metadata . tables [ args ] #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( type_ == 'column' ) : #NEWLINE# #INDENT# ( table , colname ) = args . split ( ':' ) #NEWLINE# return metadata . tables [ table ] . c [ colname ] #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( type_ == 'session' ) : #NEWLINE# #INDENT# return scoped_session ( ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# if ( type_ == 'engine' ) : #NEWLINE# #INDENT# return get_engine ( ) #NEWLINE# #UNINDENT# else : #NEWLINE# #INDENT# raise Exception ( ( 'Unknown token: %s' % type_ ) ) #NEWLINE# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# #UNINDENT# unpickler . persistent_load = get_engine #NEWLINE# return unpickler