PingableConnection and ServerInfoAwareConnection now extend Connection

UPGRADE.md

 # Upgrade to 3.0
 
+## BC BREAK: PingableConnection and ServerInfoAwareConnection interfaces now extend Connection
+
+All implementations of the `PingableConnection` and `ServerInfoAwareConnection` interfaces have to implement the methods defined in the `Connection` interface as well.
+
 ## BC BREAK: VersionAwarePlatformDriver interface now extends Driver
 
 All implementations of the `VersionAwarePlatformDriver` interface have to implement the methods defined in the `Driver` interface as well.

lib/Doctrine/DBAL/Driver/IBMDB2/DB2Connection.php

@@ -2,7 +2,6 @@
 
 namespace Doctrine\DBAL\Driver\IBMDB2;
 
-use Doctrine\DBAL\Driver\Connection;
 use Doctrine\DBAL\Driver\ResultStatement;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Driver\Statement as DriverStatement;
@@ -25,7 +24,7 @@ use function db2_rollback;
 use function db2_server_info;
 use function db2_stmt_errormsg;
 
-class DB2Connection implements Connection, ServerInfoAwareConnection
+class DB2Connection implements ServerInfoAwareConnection
 {
     /** @var resource */
     private $conn = null;

lib/Doctrine/DBAL/Driver/Mysqli/MysqliConnection.php

@@ -2,7 +2,6 @@
 
 namespace Doctrine\DBAL\Driver\Mysqli;
 
-use Doctrine\DBAL\Driver\Connection;
 use Doctrine\DBAL\Driver\PingableConnection;
 use Doctrine\DBAL\Driver\ResultStatement;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
@@ -28,7 +27,7 @@ use function set_error_handler;
 use function sprintf;
 use function stripos;
 
-class MysqliConnection implements Connection, PingableConnection, ServerInfoAwareConnection
+class MysqliConnection implements PingableConnection, ServerInfoAwareConnection
 {
     /**
      * Name of the option to set connection flags

lib/Doctrine/DBAL/Driver/PDOConnection.php

@@ -11,7 +11,7 @@ use function assert;
  *
  * Used by all PDO-based drivers.
  */
-class PDOConnection implements Connection, ServerInfoAwareConnection
+class PDOConnection implements ServerInfoAwareConnection
 {
     /** @var PDO */
     private $connection;

lib/Doctrine/DBAL/Driver/PingableConnection.php

@@ -5,7 +5,7 @@ namespace Doctrine\DBAL\Driver;
 /**
  * An interface for connections which support a "native" ping method.
  */
-interface PingableConnection
+interface PingableConnection extends Connection
 {
     /**
      * Pings the database server to determine if the connection is still

lib/Doctrine/DBAL/Driver/SQLAnywhere/SQLAnywhereConnection.php

@@ -2,7 +2,6 @@
 
 namespace Doctrine\DBAL\Driver\SQLAnywhere;
 
-use Doctrine\DBAL\Driver\Connection;
 use Doctrine\DBAL\Driver\ResultStatement;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Driver\Statement as DriverStatement;
@@ -27,7 +26,7 @@ use function sasql_set_option;
 /**
  * SAP Sybase SQL Anywhere implementation of the Connection interface.
  */
-class SQLAnywhereConnection implements Connection, ServerInfoAwareConnection
+class SQLAnywhereConnection implements ServerInfoAwareConnection
 {
     /** @var resource The SQL Anywhere connection resource. */
     private $connection;

lib/Doctrine/DBAL/Driver/SQLSrv/SQLSrvConnection.php

@@ -2,7 +2,6 @@
 
 namespace Doctrine\DBAL\Driver\SQLSrv;
 
-use Doctrine\DBAL\Driver\Connection;
 use Doctrine\DBAL\Driver\ResultStatement;
 use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
 use Doctrine\DBAL\Driver\Statement as DriverStatement;
@@ -25,7 +24,7 @@ use function str_replace;
 /**
  * SQL Server implementation for the Connection interface.
  */
-class SQLSrvConnection implements Connection, ServerInfoAwareConnection
+class SQLSrvConnection implements ServerInfoAwareConnection
 {
     /** @var resource */
     protected $conn;

lib/Doctrine/DBAL/Driver/ServerInfoAwareConnection.php

@@ -5,7 +5,7 @@ namespace Doctrine\DBAL\Driver;
 /**
  * Contract for a connection that is able to provide information about the server it is connected to.
  */
-interface ServerInfoAwareConnection
+interface ServerInfoAwareConnection extends Connection
 {
     /**
      * Returns the version number of the database server connected to.