Converted Connection and Statement methods which returned false in ca…

…se of a failure into void

UPGRADE.md

@@ -1,5 +1,9 @@
 # Upgrade to 3.0
 
+## BC BREAK `Statement` and `Connection` methods return `void`.
+
+`Connection::connect()`, `Statement::bindParam()`, `::bindValue()`, `::execute()`, `ResultStatement::setFetchMode()` and `::closeCursor()` no longer return a boolean value. They will throw an exception in case of failure.
+
 ## BC BREAK `Statement::rowCount()` is moved.
 
 `Statement::rowCount()` has been moved to the `ResultStatement` interface where it belongs by definition.

lib/Doctrine/DBAL/Cache/ArrayStatement.php

@@ -44,7 +44,7 @@ public function __construct(array $data)
     /**
      * {@inheritdoc}
      */
-    public function closeCursor()
+    public function closeCursor() : void
     {
         unset($this->data);
     }
@@ -72,15 +72,13 @@ public function rowCount() : int
     /**
      * {@inheritdoc}
      */
-    public function setFetchMode($fetchMode, ...$args)
+    public function setFetchMode($fetchMode, ...$args) : void
     {
         if (count($args) > 0) {
             throw new InvalidArgumentException('Caching layer does not support 2nd/3rd argument to setFetchMode()');
         }
 
         $this->defaultFetchMode = $fetchMode;
-
-        return true;
     }
 
     /**

lib/Doctrine/DBAL/Cache/ResultCacheStatement.php

@@ -75,11 +75,12 @@ public function __construct(ResultStatement $stmt, Cache $resultCache, $cacheKey
     /**
      * {@inheritdoc}
      */
-    public function closeCursor()
+    public function closeCursor() : void
     {
         $this->statement->closeCursor();
+
         if (! $this->emptied || $this->data === null) {
-            return true;
+            return;
         }
 
         $data = $this->resultCache->fetch($this->cacheKey);
@@ -90,8 +91,6 @@ public function closeCursor()
 
         $this->resultCache->save($this->cacheKey, $data, $this->lifetime);
         unset($this->data);
-
-        return true;
     }
 
     /**
@@ -105,11 +104,9 @@ public function columnCount()
     /**
      * {@inheritdoc}
      */
-    public function setFetchMode($fetchMode, ...$args)
+    public function setFetchMode($fetchMode, ...$args) : void
     {
         $this->defaultFetchMode = $fetchMode;
-
-        return true;
     }
 
     /**

lib/Doctrine/DBAL/Connection.php

@@ -338,13 +338,12 @@ public function getExpressionBuilder()
     /**
      * Establishes the connection with the database.
      *
-     * @return bool TRUE if the connection was successfully established, FALSE if
-     *              the connection is already open.
+     * @throws DriverException
      */
-    public function connect()
+    public function connect() : void
     {
         if ($this->isConnected) {
-            return false;
+            return;
         }
 
         $driverOptions = $this->params['driverOptions'] ?? [];
@@ -358,12 +357,12 @@ public function connect()
             $this->beginTransaction();
         }
 
-        if ($this->_eventManager->hasListeners(Events::postConnect)) {
-            $eventArgs = new Event\ConnectionEventArgs($this);
-            $this->_eventManager->dispatchEvent(Events::postConnect, $eventArgs);
+        if (! $this->_eventManager->hasListeners(Events::postConnect)) {
+            return;
         }
 
-        return true;
+        $eventArgs = new Event\ConnectionEventArgs($this);
+        $this->_eventManager->dispatchEvent(Events::postConnect, $eventArgs);
     }
 
     /**
@@ -517,10 +516,8 @@ public function setAutoCommit(bool $autoCommit) : void
      * Sets the fetch mode.
      *
      * @param int $fetchMode
-     *
-     * @return void
      */
-    public function setFetchMode($fetchMode)
+    public function setFetchMode($fetchMode) : void
     {
         $this->defaultFetchMode = $fetchMode;
     }

lib/Doctrine/DBAL/Connections/MasterSlaveConnection.php

@@ -123,7 +123,7 @@ public function isConnectedToMaster()
     /**
      * {@inheritDoc}
      */
-    public function connect($connectionName = null)
+    public function connect($connectionName = null) : void
     {
         $requestedConnectionChange = ($connectionName !== null);
         $connectionName            = $connectionName ?: 'slave';
@@ -136,7 +136,7 @@ public function connect($connectionName = null)
         // change request, then abort right here, because we are already done.
         // This prevents writes to the slave in case of "keepSlave" option enabled.
         if ($this->_conn !== null && ! $requestedConnectionChange) {
-            return false;
+            return;
         }
 
         $forceMasterAsSlave = false;
@@ -153,7 +153,7 @@ public function connect($connectionName = null)
                 $this->connections['slave'] = $this->_conn;
             }
 
-            return false;
+            return;
         }
 
         if ($connectionName === 'master') {
@@ -167,12 +167,12 @@ public function connect($connectionName = null)
             $this->connections['slave'] = $this->_conn = $this->connectTo($connectionName);
         }
 
-        if ($this->_eventManager->hasListeners(Events::postConnect)) {
-            $eventArgs = new ConnectionEventArgs($this);
-            $this->_eventManager->dispatchEvent(Events::postConnect, $eventArgs);
+        if (! $this->_eventManager->hasListeners(Events::postConnect)) {
+            return;
         }
 
-        return true;
+        $eventArgs = new ConnectionEventArgs($this);
+        $this->_eventManager->dispatchEvent(Events::postConnect, $eventArgs);
     }
 
     /**

lib/Doctrine/DBAL/Driver/IBMDB2/DB2Statement.php

@@ -89,15 +89,15 @@ public function __construct($stmt)
     /**
      * {@inheritdoc}
      */
-    public function bindValue($param, $value, $type = ParameterType::STRING)
+    public function bindValue($param, $value, $type = ParameterType::STRING) : void
     {
-        return $this->bindParam($param, $value, $type);
+        $this->bindParam($param, $value, $type);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null)
+    public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null) : void
     {
         switch ($type) {
             case ParameterType::INTEGER:
@@ -122,8 +122,6 @@ public function bindParam($column, &$variable, $type = ParameterType::STRING, $l
                 $this->bind($column, $variable, DB2_PARAM_IN, DB2_CHAR);
                 break;
         }
-
-        return true;
     }
 
     /**
@@ -144,17 +142,17 @@ private function bind($position, &$variable, int $parameterType, int $dataType)
     /**
      * {@inheritdoc}
      */
-    public function closeCursor()
+    public function closeCursor() : void
     {
         $this->bindParam = [];
 
-        if (! db2_free_result($this->stmt)) {
-            return false;
+        if (! $this->result) {
+            return;
         }
 
-        $this->result = false;
+        db2_free_result($this->stmt);
 
-        return true;
+        $this->result = false;
     }
 
     /**
@@ -187,7 +185,7 @@ public function errorInfo()
     /**
      * {@inheritdoc}
      */
-    public function execute($params = null)
+    public function execute($params = null) : void
     {
         if ($params === null) {
             ksort($this->bindParam);
@@ -222,26 +220,24 @@ public function execute($params = null)
         }
 
         $this->result = true;
-
-        return $retval;
     }
 
     /**
      * {@inheritdoc}
      */
-    public function setFetchMode($fetchMode, ...$args)
+    public function setFetchMode($fetchMode, ...$args) : void
     {
         $this->defaultFetchMode = $fetchMode;
 
         if (isset($args[0])) {
             $this->defaultFetchClass = $args[0];
         }
 
-        if (isset($args[1])) {
-            $this->defaultFetchClassCtorArgs = (array) $args[2];
+        if (! isset($args[1])) {
+            return;
         }
 
-        return true;
+        $this->defaultFetchClassCtorArgs = (array) $args[2];
     }
 
     /**

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

@@ -3,6 +3,7 @@
 namespace Doctrine\DBAL\Driver\Mysqli;
 
 use Doctrine\DBAL\DBALException;
+use Doctrine\DBAL\Driver\DriverException;
 use Doctrine\DBAL\Driver\Statement;
 use Doctrine\DBAL\Driver\StatementIterator;
 use Doctrine\DBAL\Exception\InvalidArgumentException;
@@ -101,7 +102,7 @@ public function __construct(mysqli $conn, $prepareString)
     /**
      * {@inheritdoc}
      */
-    public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null)
+    public function bindParam($column, &$variable, $type = ParameterType::STRING, $length = null) : void
     {
         assert(is_int($column));
 
@@ -111,14 +112,12 @@ public function bindParam($column, &$variable, $type = ParameterType::STRING, $l
 
         $this->_bindedValues[$column] =& $variable;
         $this->types[$column - 1]     = self::$_paramTypeMap[$type];
-
-        return true;
     }
 
     /**
      * {@inheritdoc}
      */
-    public function bindValue($param, $value, $type = ParameterType::STRING)
+    public function bindValue($param, $value, $type = ParameterType::STRING) : void
     {
         assert(is_int($param));
 
@@ -129,14 +128,12 @@ public function bindValue($param, $value, $type = ParameterType::STRING)
         $this->_values[$param]       = $value;
         $this->_bindedValues[$param] =& $this->_values[$param];
         $this->types[$param - 1]     = self::$_paramTypeMap[$type];
-
-        return true;
     }
 
     /**
      * {@inheritdoc}
      */
-    public function execute($params = null)
+    public function execute($params = null) : void
     {
         if ($params !== null && count($params) > 0) {
             if (! $this->bindUntypedValues($params)) {
@@ -199,12 +196,12 @@ public function execute($params = null)
         }
 
         $this->result = true;
-
-        return true;
     }
 
     /**
      * Binds parameters with known types previously bound to the statement
+     *
+     * @throws DriverException
      */
     private function bindTypedParameters()
     {
@@ -408,12 +405,10 @@ public function errorInfo()
     /**
      * {@inheritdoc}
      */
-    public function closeCursor()
+    public function closeCursor() : void
     {
         $this->_stmt->free_result();
         $this->result = false;
-
-        return true;
     }
 
     /**
@@ -439,11 +434,9 @@ public function columnCount()
     /**
      * {@inheritdoc}
      */
-    public function setFetchMode($fetchMode, ...$args)
+    public function setFetchMode($fetchMode, ...$args) : void
     {
         $this->_defaultFetchMode = $fetchMode;
-
-        return true;
     }
 
     /**