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https://github.com/koel/koel
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67 lines
2.3 KiB
PHP
67 lines
2.3 KiB
PHP
<?php
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namespace App\Models;
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use Illuminate\Database\Eloquent\Builder;
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use Illuminate\Support\Facades\DB;
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/**
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* With reference to GitHub issue #463.
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* MySQL and PostgresSQL 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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* @method static Builder whereIn($keys, array $values)
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* @method static Builder whereNotIn($keys, array $values)
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* @method static Builder select(string $string)
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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<string>|array<int> $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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public static function deleteWhereIDsNotIn(array $ids, string $key = 'id'): void
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{
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$maxChunkSize = config('database.default') === 'sqlite-persistent' ? 999 : 65535;
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// If the number of entries is lower than, or equals to maxChunkSize, just go ahead.
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if (count($ids) <= $maxChunkSize) {
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static::whereNotIn($key, $ids)->delete();
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return;
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}
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// Otherwise, we get the actual IDs that should be deleted…
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$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) < $maxChunkSize) {
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static::whereIn($key, $whereInIDs)->delete();
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return;
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}
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// If that's not possible (i.e. this array has more than maxChunkSize elements, too)
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// then we'll delete chunk by chunk.
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static::deleteByChunk($ids, $key, $maxChunkSize);
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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<string>|array<int> $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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public static function deleteByChunk(array $ids, string $key = 'id', int $chunkSize = 65535): void
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{
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DB::transaction(static function () use ($ids, $key, $chunkSize): void {
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foreach (array_chunk($ids, $chunkSize) as $chunk) {
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static::whereIn($key, $chunk)->delete();
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}
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});
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}
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}
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