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[Launchpad Bug Tracker <1131653@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:~therp-nl/openobject-
server/7.0-lp1131653_check_recursion_signals_nonexisting_loops

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https://bugs.launchpad.net/bugs/1131653

Title:
  [7.0] _check_recursion signals non-existing recursion when ids include
  a parent/child pair

Status in OpenERP Server:
  New

Bug description:
  Here is my company parent structure:

      (Pdb) self.read(cr, uid, [3, 4], ['parent_id'])
      [{'id': 3, 'parent_id': False},
       {'id': 4, 'parent_id': (3, u'Acme 3')}]

  That is to say, record 3 is the parent of record 4. Record 3 does not
  have a parent itself.

  When I write the same value to all records, the constraint on
  _check_recursion signals a recursive structure incorrectly:

      (Pdb) self.check_recursion(cr, uid, [3, 4], context=None, parent=None)
      False

  Having each record checked individually, the method gives the right
  results.

      (Pdb) self._check_recursion(cr, uid, [3], context=None, parent=None)
      True
      (Pdb) self.check_recursion(cr, uid, [4], context=None, parent=None)
      True

  These results are inconsistent and as a result I cannot write the same
  field on these records simultaneously.

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