mirror of
https://github.com/koel/koel
synced 2024-12-23 19:13:06 +00:00
66 lines
2 KiB
PHP
66 lines
2 KiB
PHP
<?php
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namespace App\Traits;
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use DB;
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use Exception;
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/**
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* With reference to GitHub issue #463.
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* MySQL and PostgreSQL seem to have a limit of 2^16-1 (65535) elements in an IN statement.
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* This trait provides a method as a workaround to this limitation.
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*/
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trait SupportsDeleteWhereIDsNotIn
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{
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/**
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* Deletes all records whose IDs are not in an array.
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*
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* @param array $ids The array of IDs.
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* @param string $key Name of the primary key.
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*
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* @return mixed
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*
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* @throws \Exception
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*/
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public static function deleteWhereIDsNotIn(array $ids, $key = 'id')
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{
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// If the number of entries is lower than, or equals to 65535, just go ahead.
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if (count($ids) <= 65535) {
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return static::whereNotIn($key, $ids)->delete();
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}
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// Otherwise, we get the actual IDs that should be deleted…
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$allIDs = static::select($key)->get()->pluck($key)->all();
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$whereInIDs = array_diff($allIDs, $ids);
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// …and see if we can delete them instead.
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if (count($whereInIDs) < 65535) {
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return static::whereIn($key, $whereInIDs)->delete();
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}
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// If that's not possible (i.e. this array has more than 65535 elements, too)
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// then we'll delete chunk by chunk.
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static::deleteByChunk($ids, $key);
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}
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/**
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* Delete records chunk by chunk.
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*
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* @param array $ids The array of record IDs to delete
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* @param string $key Name of the primary key
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* @param int $chunkSize Size of each chunk. Defaults to 2^16-1 (65535)
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*
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* @throws \Exception
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*/
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public static function deleteByChunk(array $ids, $key = 'id', $chunkSize = 65535)
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{
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DB::beginTransaction();
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try {
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foreach (array_chunk($ids, 65535) as $chunk) {
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static::whereIn($key, $chunk)->delete();
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}
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DB::commit();
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} catch (Exception $e) {
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DB::rollBack();
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}
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}
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}
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