#200 Unable to create nillable instances of classes that require constructor arguments

[Peter A. Bigot]

See https://sourceforge.net/p/pyxb/discussion/956708/thread/4647234c/

xs:dateTime inherits from datetime.datetime so attempts to create nil instances are rejected by the superclass constructor. This suggests we need a dummy class to produce instances of nil element values where there is no such thing as a nil instance of the type to which the value must conform.

[Peter A. Bigot]

• status changed from new to accepted

After further consideration this can be handled similarly to other simple types that descend from Python classes by marking the instance as nil but allowing it to have a default value consistent with the Python type.

[Peter A. Bigot]

• status changed from accepted to closed

• resolution set to fixed

  commit 7e098ec00f0f51e24c03bc11effd11c0d5d88013
  Author: Peter A. Bigot pab@pabigot.com
  Date: Fri May 31 14:32:30 2013 -0500

  trac/200: Unable to create nillable instance of some simple types
  
  If the instance is to be nil but the underlying Python type requires a
  constructor parameter, provide arguments that satisfy the underlying Python
  class.
  
  Validated for all PyXB simple types that overload the __new__ function to
  infer constructor arguments from lexical representations.
  

  :100644 100644 d7b2404... 3c7e6a3... M pyxb/binding/datatypes.py
  :000000 100644 0000000... 6d5c256... A tests/trac/test-trac-0200.py

[Peter A. Bigot]

• attachment _0001-trac-200-Unable-to-create-nillable-instance-of-some-.patch_ added

Patch for #200, since SF's git web interface does not make this easy to get

[Peter A. Bigot]

• milestone set to PyXB 1.2.3