Add ColumnDefinitionBuilder::getDefaultUuidExpression() method

yiisoft · Dec 11, 2024 · 33c11f2 · 33c11f2
1 parent 498fb19
commit 33c11f2
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Showing 2 changed files with 28 additions and 2 deletions.
diff --git a/src/Column/ColumnDefinitionBuilder.php b/src/Column/ColumnDefinitionBuilder.php
@@ -8,10 +8,10 @@
 use Yiisoft\Db\QueryBuilder\AbstractColumnDefinitionBuilder;
 use Yiisoft\Db\Schema\Column\ColumnSchemaInterface;
 
+use function version_compare;
+
 final class ColumnDefinitionBuilder extends AbstractColumnDefinitionBuilder
 {
-    protected const GENERATE_UUID_EXPRESSION = 'gen_random_uuid()';
-
     protected const TYPES_WITH_SIZE = [
         'bit',
         'bit varying',
@@ -90,4 +90,16 @@ protected function getDbType(ColumnSchemaInterface $column): string
             default => 'varchar',
         };
     }
+
+    protected function getDefaultUuidExpression(): string
+    {
+        $serverVersion = $this->queryBuilder->getServerInfo()->getVersion();
+
+        if (version_compare($serverVersion, '12', '<')) {
+            return "uuid_in(overlay(overlay(md5(now()::text || random()::text) placing '4' from 13) placing"
+                . ' to_hex(floor(4 * random() + 8)::int)::text from 17)::cstring)';
+        }
+
+        return 'gen_random_uuid()';
+    }
 }
diff --git a/tests/Provider/QueryBuilderProvider.php b/tests/Provider/QueryBuilderProvider.php
@@ -16,6 +16,7 @@
 use Yiisoft\Db\Tests\Support\TraversableObject;
 
 use function array_replace;
+use function version_compare;
 
 final class QueryBuilderProvider extends \Yiisoft\Db\Tests\Provider\QueryBuilderProvider
 {
@@ -622,6 +623,19 @@ public static function buildColumnDefinition(): array
         $values['scale(2)'][0] = 'numeric(10,2)';
         $values['integer(8)->scale(2)'][0] = 'integer';
 
+        $db = self::getDb();
+        $serverVersion = self::getDb()->getServerInfo()->getVersion();
+        $db->close();
+
+        if (version_compare($serverVersion, '12', '<')) {
+            $uuidExpression = "uuid_in(overlay(overlay(md5(now()::text || random()::text) placing '4' from 13) placing"
+                . ' to_hex(floor(4 * random() + 8)::int)::text from 17)::cstring)';
+
+            $values[PseudoType::UUID_PK][0] = "uuid PRIMARY KEY DEFAULT $uuidExpression";
+            $values[PseudoType::UUID_PK_SEQ][0] = "uuid PRIMARY KEY DEFAULT $uuidExpression";
+            $values['uuidPrimaryKey()'][0] = "uuid PRIMARY KEY DEFAULT $uuidExpression";
+        }
+
         return $values;
     }