MariaDB improvements, refactoring default keywords for 10.2 version and extends them for 10.3

revert back MariaDb1027Platform

.travis.yml

@@ -179,6 +179,18 @@ jobs:
       addons:
         mariadb: 10.2
 
+    - stage: Test
+      php: 7.2
+      env: DB=mariadb MARIADB_VERSION=10.3
+      addons:
+          mariadb: 10.3
+
+    - stage: Test
+      php: 7.2
+      env: DB=mariadb.mysqli MARIADB_VERSION=10.3
+      addons:
+          mariadb: 10.3
+
     - stage: Test
       php: 7.1
       env: DB=pgsql POSTGRESQL_VERSION=9.2 COVERAGE=yes

docs/en/reference/platforms.rst

@@ -37,6 +37,11 @@ MySQL
 -  ``MySQL57Platform`` for version 5.7 (5.7.9 GA) and above.
 -  ``MySQL80Platform`` for version 8.0 (8.0 GA) and above.
 
+MariaDB
+^^^^^
+
+-  ``MariaDb1027Platform`` for version 10.2 (10.2.7 GA) and above.
+
 Oracle
 ^^^^^^
 

lib/Doctrine/DBAL/Platforms/MariaDb1027Platform.php

@@ -24,21 +24,13 @@ use Doctrine\DBAL\Types\Type;
 /**
  * Provides the behavior, features and SQL dialect of the MariaDB 10.2 (10.2.7 GA) database platform.
  *
- * Note: Should not be used with versions prior ro 10.2.7.
+ * Note: Should not be used with versions prior to 10.2.7.
  *
  * @author Vanvelthem Sébastien
  * @link   www.doctrine-project.org
  */
 final class MariaDb1027Platform extends MySqlPlatform
 {
-    /**
-     * {@inheritdoc}
-     */
-    public function hasNativeJsonType() : bool
-    {
-        return false;
-    }
-
     /**
      * {@inheritdoc}
      *

tests/Doctrine/Tests/DBAL/Platforms/MariaDb1027PlatformTest.php

@@ -3,8 +3,6 @@
 namespace Doctrine\Tests\DBAL\Platforms;
 
 use Doctrine\DBAL\Platforms\MariaDb1027Platform;
-use Doctrine\DBAL\Schema\Comparator;
-use Doctrine\DBAL\Schema\Table;
 use Doctrine\DBAL\Types\Type;
 
 class MariaDb1027PlatformTest extends AbstractMySQLPlatformTestCase