Final fixes

src/Driver/DriverArray.php

@@ -40,6 +40,7 @@ use function Amp\Future\await;
  */
 abstract class DriverArray extends DbArray
 {
+    private bool $inited = false;
     /**
      * @param Serializer<TValue> $serializer
      */
@@ -47,21 +48,26 @@ abstract class DriverArray extends DbArray
         protected readonly FieldConfig $config,
         protected readonly Serializer $serializer
     ) {
+        $this->inited = true;
     }
 
     public static function getInstance(FieldConfig $config, DbArray|null $previous): DbArray
     {
+        $migrate = true;
         if ($previous !== null
             && $previous::class === static::class
             && $previous->config == $config
         ) {
-            return $previous;
+            if ($previous->inited) {
+                return $previous;
+            }
+            $migrate = false;
         }
         \assert($config->settings instanceof DriverSettings);
 
         $instance = new static($config, $config->settings->serializer);
 
-        if ($previous === null) {
+        if ($previous === null || !$migrate) {
             return $instance;
         }
 

tests/OrmTest.php

@@ -383,7 +383,11 @@ final class OrmTest extends TestCase
         $this->assertSame(1, $obj->saveBeforeCnt);
 
         $obj->arr[12345] = 54321;
+        $obj->arr2[123456] = 654321;
         $this->assertSame(54321, $obj->arr[12345]);
+        $this->assertSame(654321, $obj->arr2[123456]);
+        $this->assertCount(1, $obj->arr);
+        $this->assertCount(1, $obj->arr2);
 
         $obj = $orm[321];
 
@@ -391,6 +395,9 @@ final class OrmTest extends TestCase
         $this->assertSame(1, $obj->saveAfterCnt);
         $this->assertSame(1, $obj->saveBeforeCnt);
         $this->assertSame(54321, $obj->arr[12345]);
+        $this->assertSame(654321, $obj->arr2[123456]);
+        $this->assertCount(1, $obj->arr);
+        $this->assertCount(1, $obj->arr2);
 
         unset($obj);
         $orm = $field->build();
@@ -400,6 +407,9 @@ final class OrmTest extends TestCase
         $this->assertSame(0, $obj->saveAfterCnt);
         $this->assertSame(0, $obj->saveBeforeCnt);
         $this->assertSame(54321, $obj->arr[12345]);
+        $this->assertSame(654321, $obj->arr2[123456]);
+        $this->assertCount(1, $obj->arr);
+        $this->assertCount(1, $obj->arr2);
 
         $orm[321] = $obj;
 
@@ -407,6 +417,9 @@ final class OrmTest extends TestCase
         $this->assertSame(0, $obj->saveAfterCnt);
         $this->assertSame(0, $obj->saveBeforeCnt);
         $this->assertSame(54321, $obj->arr[12345]);
+        $this->assertSame(654321, $obj->arr2[123456]);
+        $this->assertCount(1, $obj->arr);
+        $this->assertCount(1, $obj->arr2);
 
         $f = new ReflectionProperty(ObjectArray::class, 'cache');
         $f->getValue($orm)->flushCache();

tests/TestObject.php

@@ -25,6 +25,11 @@ final class TestObject extends DbObject
         ValueType::INT
     )]
     public DbArray $arr;
+    #[OrmMappedArray(
+        KeyType::INT,
+        ValueType::INT
+    )]
+    public DbArray $arr2;
 
     public function __sleep()
     {