Package orm2 :: Package util :: Module datatypes :: Class pickle

Class pickle

    object --+        
             |        
      property --+    
                 |    
datatypes.datatype --+
                     |
                    pickle

This datatype uses Python's pickle module to serialize (nearly) arbitrary Python objects into a string representation that is then stored in a regular database column. See http://localhost/Documentation/Python/Main/lib/module-pickle.html for details on pickling.

Instance Methods

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__init__(self, pickle_protocol=HIGHEST_PROTOCOL, column=None, title=None, validators=(), has_default=False)

__set_from_result__(self, ds, dbobj, value)
This method takes care of un-pickling the value stored in the datbase.

__convert__(self, value)
Since we store the Python object 'as is', convert does nothing.

sql_literal(self, dbobj)
This function takes care of converting the Python object into a serialized string representation.

Inherited from datatypes.datatype: __delete__, __get__, __init_dbclass__, __select_after_insert__, __select_this_column__, __set__, __setattr__, add_widget, check_dbobj, data_attribute_name, isset, widget_specs

Inherited from property: __getattribute__, __new__

Inherited from object: __delattr__, __hash__, __reduce__, __reduce_ex__, __repr__, __str__

Class Variables

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Inherited from datatypes.datatype: python_class, sql_literal_class

Inherited from property: fdel, fget, fset

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, pickle_protocol=HIGHEST_PROTOCOL, column=None, title=None, validators=(), has_default=False)
(Constructor)

source code

Parameters:

pickle_protocol - Version number of the protocol being used by the pickle functions. See http://localhost/Documentation/Python/Main/lib/module-pickle.html for details.