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| 1 | +<?php |
| 2 | + |
| 3 | +use Illuminate\Database\Migrations\Migration; |
| 4 | +use Illuminate\Database\Schema\Blueprint; |
| 5 | +use Illuminate\Support\Facades\DB; |
| 6 | +use Illuminate\Support\Facades\Schema; |
| 7 | + |
| 8 | +return new class extends Migration { |
| 9 | + /** |
| 10 | + * Add performance indexes for Saved Search queries. |
| 11 | + */ |
| 12 | + public function up(): void |
| 13 | + { |
| 14 | + $this->addIndex( |
| 15 | + 'process_request_tokens', |
| 16 | + 'process_request_tokens_prt_task_name_id', |
| 17 | + ['element_type', 'element_name', 'process_id', 'user_id', 'process_request_id'] |
| 18 | + ); |
| 19 | + $this->addIndex( |
| 20 | + 'process_request_tokens', |
| 21 | + 'process_request_tokens_prt_type_id_proc', |
| 22 | + ['element_type', 'process_id', 'user_id', 'process_request_id'] |
| 23 | + ); |
| 24 | + $this->addIndex( |
| 25 | + 'process_request_tokens', |
| 26 | + 'process_request_tokens_prt_self_service_status_user', |
| 27 | + ['is_self_service', 'status', 'user_id', 'id'] |
| 28 | + ); |
| 29 | + $this->addIndex( |
| 30 | + 'process_request_tokens', |
| 31 | + 'process_request_tokens_processid_elem_stat_self_user_elname', |
| 32 | + ['process_id', 'element_type', 'status', 'is_self_service', 'user_id', 'element_name'] |
| 33 | + ); |
| 34 | + |
| 35 | + $this->addIndex( |
| 36 | + 'category_assignments', |
| 37 | + 'category_assignments_assignabletyid_categorytyid', |
| 38 | + ['assignable_type', 'assignable_id', 'category_type', 'category_id'] |
| 39 | + ); |
| 40 | + |
| 41 | + $this->addIndex( |
| 42 | + 'process_versions', |
| 43 | + 'process_versions_processid_draft', |
| 44 | + ['process_id', 'draft'] |
| 45 | + ); |
| 46 | + |
| 47 | + // Leading `id` removed from the original proposal because the primary key |
| 48 | + // already covers it and InnoDB secondary indexes include it automatically. |
| 49 | + $this->addIndex( |
| 50 | + 'processes', |
| 51 | + 'process_idx_proc_deletedat_categoryid', |
| 52 | + ['deleted_at', 'process_category_id'] |
| 53 | + ); |
| 54 | + |
| 55 | + // Tail `id` removed for the same reason. |
| 56 | + $this->addIndex( |
| 57 | + 'process_categories', |
| 58 | + 'process_categories_issystem_id', |
| 59 | + ['is_system'] |
| 60 | + ); |
| 61 | + } |
| 62 | + |
| 63 | + /** |
| 64 | + * Reverse the migrations. |
| 65 | + */ |
| 66 | + public function down(): void |
| 67 | + { |
| 68 | + $this->dropIndex('process_request_tokens', 'process_request_tokens_prt_task_name_id'); |
| 69 | + $this->dropIndex('process_request_tokens', 'process_request_tokens_prt_type_id_proc'); |
| 70 | + $this->dropIndex('process_request_tokens', 'process_request_tokens_prt_self_service_status_user'); |
| 71 | + $this->dropIndex('process_request_tokens', 'process_request_tokens_processid_elem_stat_self_user_elname'); |
| 72 | + $this->dropIndex('category_assignments', 'category_assignments_assignabletyid_categorytyid'); |
| 73 | + $this->dropIndex('process_versions', 'process_versions_processid_draft'); |
| 74 | + $this->dropIndex('processes', 'process_idx_proc_deletedat_categoryid'); |
| 75 | + $this->dropIndex('process_categories', 'process_categories_issystem_id'); |
| 76 | + } |
| 77 | + |
| 78 | + private function addIndex(string $table, string $name, array $columns): void |
| 79 | + { |
| 80 | + if (Schema::hasIndex($table, $name)) { |
| 81 | + return; |
| 82 | + } |
| 83 | + |
| 84 | + Schema::table($table, function (Blueprint $table) use ($name, $columns) { |
| 85 | + $table->index($columns, $name); |
| 86 | + }); |
| 87 | + } |
| 88 | + |
| 89 | + private function dropIndex(string $table, string $name): void |
| 90 | + { |
| 91 | + if (!Schema::hasIndex($table, $name)) { |
| 92 | + return; |
| 93 | + } |
| 94 | + |
| 95 | + try { |
| 96 | + DB::statement("ALTER TABLE `{$table}` DROP INDEX `{$name}`"); |
| 97 | + } catch (Exception $e) { |
| 98 | + // Ignore so rollback continues (e.g. index required by a foreign key). |
| 99 | + } |
| 100 | + } |
| 101 | +}; |
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