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includes/DecoratedPdo.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ *
+ * This file is part of Aura for PHP.
+ *
+ * @license https://opensource.org/licenses/MIT MIT
+ *
+ */
+namespace Aura\Sql;
+
+use Aura\Sql\Profiler\Profiler;
+use Aura\Sql\Profiler\ProfilerInterface;
+use PDO;
+
+/**
+ *
+ * Decorates an existing PDO instance with the extended methods.
+ *
+ * @package Aura.Sql
+ *
+ */
+class DecoratedPdo extends AbstractExtendedPdo
+{
+    /**
+     *
+     * Constructor.
+     *
+     * This overrides the parent so that it can take an existing PDO instance
+     * and decorate it with the extended methods.
+     *
+     * @param PDO $pdo An existing PDO instance to decorate.
+     *
+     * @param ProfilerInterface $profiler Tracks and logs query profiles.
+     *
+     */
+    public function __construct(PDO $pdo, ProfilerInterface $profiler = null)
+    {
+        $this->pdo = $pdo;
+
+        if ($profiler === null) {
+            $profiler = new Profiler();
+        }
+        $this->setProfiler($profiler);
+
+        $driver = $pdo->getAttribute(PDO::ATTR_DRIVER_NAME);
+        $this->setParser($this->newParser($driver));
+        $this->setQuoteName($driver);
+    }
+
+    /**
+     *
+     * Connects to the database.
+     *
+     * @return null
+     *
+     */
+    public function connect()
+    {
+        // already connected
+    }
+
+    /**
+     *
+     * Disconnects from the database; disallowed with decorated PDO connections.
+     *
+     * @return null
+     *
+     */
+    public function disconnect()
+    {
+        $message = "Cannot disconnect a DecoratedPdo instance.";
+        throw new Exception\CannotDisconnect($message);
+    }
+}