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[ticket/11495] Rename fix function to regenerate_left_right_ids()

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This method regenerates the left/right ids for the nested set based on the
parent/child relations. This function executes three queries per item, so
it should only be called, when the set has one of the following problems:
- The set has a duplicated value inside the left/right id chain
- The set has a missing value inside the left/right id chain
- The set has items that do not have a left/right is set

When regenerating the items, the items are sorted by parent id and their
current left id, so the current child/parent relationships are kept and
running the function on a working set will not change any orders.

PHPBB3-11495
This commit is contained in:
Joas Schilling
2013-04-25 13:40:25 +02:00
parent 61e72d3a10
commit 4bff28a0ee
3 changed files with 21 additions and 9 deletions
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16
phpBB/includes/nestedset/interface.php
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@@ -124,12 +124,24 @@ interface phpbb_nestedset_interface
public function get_parent_data(array $item);
/**
* Recalculate Nested Sets
* Regenerate left/right ids from parent/child relationship
*
* This method regenerates the left/right ids for the nested set based on
* the parent/child relations. This function executes three queries per
* item, so it should only be called, when the set has one of the following
* problems:
* - The set has a duplicated value inside the left/right id chain
* - The set has a missing value inside the left/right id chain
* - The set has items that do not have a left/right is set
*
* When regenerating the items, the items are sorted by parent id and their
* current left id, so the current child/parent relationships are kept
* and running the function on a working set will not change any orders.
*
* @param int $new_id First left_id to be used (should start with 1)
* @param int $parent_id parent_id of the current set (default = 0)
* @param bool $reset_ids Should we reset all left_id/right_id on the first call?
* @return int $new_id The next left_id/right_id that should be used
*/
public function recalculate_nested_set($new_id, $parent_id = 0, $reset_ids = false);
public function regenerate_left_right_ids($new_id, $parent_id = 0, $reset_ids = false);
}