#26789: ORM produces query with NULL instead of empty geometry
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     Reporter:  sir-sigurd  |                    Owner:  sir-sigurd
         Type:  Bug         |                   Status:  assigned
    Component:  GIS         |                  Version:  1.9
     Severity:  Normal      |               Resolution:
     Keywords:              |             Triage Stage:  Accepted
    Has patch:  0           |      Needs documentation:  0
  Needs tests:  0           |  Patch needs improvement:  0
Easy pickings:  0           |                    UI/UX:  0
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Comment (by jtiai):

 Root cause it that geometry value begin nothing is tested with clause {{{
 if not value }}}. Which in turn calls {{{ __len__ }}} on a geometry,
 having a following responses in different geometries:

 For an empty point number of coordinates is returned. In case of empty 0
 (zero) is returned (false).

 For a linestring empty tuple is returned {{{ () }}} (false)

 For an polygon empty tuple of tuple is returned {{{ ((),) }}} (true)

 For a geometry collection length of 0 (zero) is returned (false)

--
Ticket URL: <https://code.djangoproject.com/ticket/26789#comment:3>
Django <https://code.djangoproject.com/>
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