(self, uowcommit, states)
| 532 | ) |
| 533 | |
| 534 | def process_deletes(self, uowcommit, states): |
| 535 | # head object is being deleted, and we manage its list of |
| 536 | # child objects the child objects have to have their foreign |
| 537 | # key to the parent set to NULL this phase can be called |
| 538 | # safely for any cascade but is unnecessary if delete cascade |
| 539 | # is on. |
| 540 | |
| 541 | if self.post_update or not self.passive_deletes == "all": |
| 542 | children_added = uowcommit.memo(("children_added", self), set) |
| 543 | |
| 544 | for state in states: |
| 545 | history = uowcommit.get_attribute_history( |
| 546 | state, self.key, self._passive_delete_flag |
| 547 | ) |
| 548 | if history: |
| 549 | for child in history.deleted: |
| 550 | if ( |
| 551 | child is not None |
| 552 | and self.hasparent(child) is False |
| 553 | ): |
| 554 | self._synchronize( |
| 555 | state, child, None, True, uowcommit, False |
| 556 | ) |
| 557 | if self.post_update and child: |
| 558 | self._post_update(child, uowcommit, [state]) |
| 559 | |
| 560 | if self.post_update or not self.cascade.delete: |
| 561 | for child in set(history.unchanged).difference( |
| 562 | children_added |
| 563 | ): |
| 564 | if child is not None: |
| 565 | self._synchronize( |
| 566 | state, child, None, True, uowcommit, False |
| 567 | ) |
| 568 | if self.post_update and child: |
| 569 | self._post_update( |
| 570 | child, uowcommit, [state] |
| 571 | ) |
| 572 | |
| 573 | # technically, we can even remove each child from the |
| 574 | # collection here too. but this would be a somewhat |
| 575 | # inconsistent behavior since it wouldn't happen |
| 576 | # if the old parent wasn't deleted but child was moved. |
| 577 | |
| 578 | def process_saves(self, uowcommit, states): |
| 579 | should_null_fks = ( |
no test coverage detected