Implement the ability for user-defined type casting

src/Connection.php

@@ -60,7 +60,7 @@ public function createTransaction(): Transaction
 
     public function getColumnFactory(): ColumnFactoryInterface
     {
-        return new ColumnFactory();
+        return $this->columnFactory ??= new ColumnFactory();
     }
 
     public function getQueryBuilder(): QueryBuilderInterface

tests/ColumnFactoryTest.php

@@ -6,6 +6,7 @@
 
 use PHPUnit\Framework\Attributes\DataProviderExternal;
 use Yiisoft\Db\Schema\Column\ColumnInterface;
+use Yiisoft\Db\Sqlite\Column\ColumnFactory;
 use Yiisoft\Db\Sqlite\Tests\Provider\ColumnFactoryProvider;
 use Yiisoft\Db\Sqlite\Tests\Support\TestTrait;
 use Yiisoft\Db\Tests\AbstractColumnFactoryTest;
@@ -17,6 +18,11 @@ final class ColumnFactoryTest extends AbstractColumnFactoryTest
 {
     use TestTrait;
 
+    protected function getColumnFactoryClass(): string
+    {
+        return ColumnFactory::class;
+    }
+
     #[DataProviderExternal(ColumnFactoryProvider::class, 'dbTypes')]
     public function testFromDbType(string $dbType, string $expectedType, string $expectedInstanceOf): void
     {

tests/ConnectionTest.php

@@ -15,8 +15,10 @@
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Profiler\ProfilerInterface;
 use Yiisoft\Db\Sqlite\Column\ColumnFactory;
+use Yiisoft\Db\Sqlite\Connection;
 use Yiisoft\Db\Sqlite\Tests\Support\TestTrait;
 use Yiisoft\Db\Tests\Common\CommonConnectionTest;
+use Yiisoft\Db\Tests\Support\DbHelper;
 use Yiisoft\Db\Transaction\TransactionInterface;
 
 /**
@@ -192,5 +194,18 @@ public function testGetColumnFactory(): void
         $db = $this->getConnection();
 
         $this->assertInstanceOf(ColumnFactory::class, $db->getColumnFactory());
+
+        $db->close();
+    }
+
+    public function testUserDefinedColumnFactory(): void
+    {
+        $columnFactory = new ColumnFactory();
+
+        $db = new Connection($this->getDriver(), DbHelper::getSchemaCache(), $columnFactory);
+
+        $this->assertSame($columnFactory, $db->getColumnFactory());
+
+        $db->close();
     }
 }

tests/Support/TestTrait.php

@@ -4,6 +4,7 @@
 
 namespace Yiisoft\Db\Sqlite\Tests\Support;
 
+use Yiisoft\Db\Driver\Pdo\PdoDriverInterface;
 use Yiisoft\Db\Sqlite\Connection;
 use Yiisoft\Db\Sqlite\Driver;
 use Yiisoft\Db\Sqlite\Dsn;
@@ -15,7 +16,7 @@ trait TestTrait
 
     protected function getConnection(bool $fixture = false): Connection
     {
-        $db = new Connection(new Driver($this->getDsn()), DbHelper::getSchemaCache());
+        $db = new Connection($this->getDriver(), DbHelper::getSchemaCache());
 
         if ($fixture) {
             DbHelper::loadFixture($db, __DIR__ . '/Fixture/sqlite.sql');
@@ -33,6 +34,11 @@ protected function getDsn(): string
         return $this->dsn;
     }
 
+    protected function getDriver(): PdoDriverInterface
+    {
+        return new Driver($this->getDsn());
+    }
+
     protected function getDriverName(): string
     {
         return 'sqlite';