From fcd623e8ef0070c2da4319f777328bee996a89aa Mon Sep 17 00:00:00 2001
From: jwage <jwage@625475ce-881a-0410-a577-b389adb331d8>
Date: Thu, 25 Feb 2010 19:33:21 +0000
Subject: [PATCH] [2.0] Adding DriverChain mapping driver type to allow you to
 configure drivers to use for certain entity namespaces

---
 .../ORM/Mapping/Driver/DriverChain.php        | 97 +++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 lib/Doctrine/ORM/Mapping/Driver/DriverChain.php

diff --git a/lib/Doctrine/ORM/Mapping/Driver/DriverChain.php b/lib/Doctrine/ORM/Mapping/Driver/DriverChain.php
new file mode 100644
index 000000000..b12a53421
--- /dev/null
+++ b/lib/Doctrine/ORM/Mapping/Driver/DriverChain.php
@@ -0,0 +1,97 @@
+<?php
+/*
+ *  $Id$
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Doctrine\ORM\Mapping\Driver;
+
+use Doctrine\ORM\Mapping\Driver\Driver,
+    Doctrine\ORM\Mapping\ClassMetadataInfo;
+
+/**
+ * The DriverChain allows you to add multiple other mapping drivers for
+ * certain namespaces
+ *
+ * @license 	http://www.opensource.org/licenses/lgpl-license.php LGPL
+ * @link    	www.doctrine-project.org
+ * @since   	2.0
+ * @version   $Revision$
+ * @author		Benjamin Eberlei <kontakt@beberlei.de>
+ * @author		Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author    Jonathan H. Wage <jonwage@gmail.com>
+ * @author    Roman Borschel <roman@code-factory.org>
+ */
+class DriverChain implements Driver
+{
+    /**
+     * @var array
+     */
+    private $_drivers = array();
+
+    public function addDriver(Driver $nestedDriver, $namespace)
+    {
+        $this->_drivers[$namespace] = $nestedDriver;
+    }
+
+    /**
+     * Loads the metadata for the specified class into the provided container.
+     *
+     * @param string $className
+     * @param ClassMetadataInfo $metadata
+     */
+    public function loadMetadataForClass($className, ClassMetadataInfo $metadata)
+    {
+        foreach ($this->_drivers AS $namespace => $driver) {
+            if (strpos($className, $namespace) === 0) {
+                $driver->loadMetadataForClass($className, $metadata);
+            }
+        }
+    }
+
+    /**
+     * Gets the names of all mapped classes known to this driver.
+     *
+     * @return array The names of all mapped classes known to this driver.
+     */
+    public function getAllClassNames()
+    {
+        $classNames = array();
+        foreach ($this->_drivers AS $driver) {
+            $classNames = array_merge($classNames, $driver->getAllClassNames());
+        }
+        return $classNames;
+    }
+
+    /**
+     * Whether the class with the specified name should have its metadata loaded.
+     * This is only the case if it is either mapped as an Entity or a
+     * MappedSuperclass.
+     *
+     * @param string $className
+     * @return boolean
+     */
+    public function isTransient($className)
+    {
+        foreach ($this->_drivers AS $namespace => $driver) {
+            if (strpos($className, $namespace) === 0) {
+                return $driver->isTransient($className);
+            }
+        }
+    }
+}
\ No newline at end of file