diff --git a/composer.json b/composer.json
index 25e3f48..052b252 100644
--- a/composer.json
+++ b/composer.json
@@ -5,6 +5,7 @@
     "keywords": ["rdfa"],
     "version": "0.0.1",
     "license": "LGPL",
+    "minimum-stability": "dev",
     "authors": [
         {
             "name": "Andreas Flack",
@@ -19,5 +20,8 @@
         "psr-0": {
             "Midgard\\CreatePHP": "src"
         }
+    },
+    "require": {
+        "doctrine/phpcr-odm": "1.0.*"
     }
 }
diff --git a/src/Midgard/CreatePHP/Metadata/RdfTypeFactory.php b/src/Midgard/CreatePHP/Metadata/RdfTypeFactory.php
index ae2dd99..ce9fc6e 100644
--- a/src/Midgard/CreatePHP/Metadata/RdfTypeFactory.php
+++ b/src/Midgard/CreatePHP/Metadata/RdfTypeFactory.php
@@ -43,9 +43,12 @@ public function __construct(RdfMapperInterface $mapper, RdfDriverInterface $driv
 
     public function getTypeByObject($object)
     {
-        return $this->getTypeByName(
-            $this->driver->objectToName($object, $this->mapper)
-        );
+        if (is_object($object)) {
+            $name = $this->driver->objectToName($object, $this->mapper);
+        } else {
+            $name = 'string';
+        }
+        return $this->getTypeByName($name);
     }
 
     /**
diff --git a/tests/Test/Midgard/CreatePHP/Child.php b/tests/Test/Midgard/CreatePHP/Child.php
new file mode 100644
index 0000000..1dd4041
--- /dev/null
+++ b/tests/Test/Midgard/CreatePHP/Child.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Test\Midgard\CreatePHP;
+
+class Child
+{
+    public function getTitle()
+    {
+        return 'child title';
+    }
+    public function getContent()
+    {
+        return 'child content';
+    }
+}
\ No newline at end of file
diff --git a/tests/Test/Midgard/CreatePHP/Extension/Twig/CreatephpExtensionTest.php b/tests/Test/Midgard/CreatePHP/Extension/Twig/CreatephpExtensionTest.php
index 33cd858..dc9bd8e 100644
--- a/tests/Test/Midgard/CreatePHP/Extension/Twig/CreatephpExtensionTest.php
+++ b/tests/Test/Midgard/CreatePHP/Extension/Twig/CreatephpExtensionTest.php
@@ -2,9 +2,14 @@
 
 namespace Test\Midgard\CreatePHP\Extension\Twig;
 
+use Doctrine\Common\Annotations\AnnotationRegistry;
+
 use Midgard\CreatePHP\Extension\Twig\CreatephpExtension;
 use Midgard\CreatePHP\Extension\Twig\CreatephpNode;
 
+use Midgard\CreatePHP\Metadata\RdfDriverXml;
+use Midgard\CreatePHP\Metadata\RdfTypeFactory;
+
 use Test\Midgard\CreatePHP\Model;
 
 class CreatephpExtensionTest extends \PHPUnit_Framework_TestCase
@@ -14,20 +19,46 @@ class CreatephpExtensionTest extends \PHPUnit_Framework_TestCase
      */
     private $mapper;
     /**
-     * @var \Midgard\CreatePHP\Metadata\RdfTypeFactory
+     * @var RdfTypeFactory
      */
     private $factory;
     /** @var \Twig_Environment */
     private $twig;
 
+    /**
+     * @var RdfDriverXml
+     */
+    private $driver;
+
     protected function setUp()
     {
+        global $autoload;
         if (!class_exists('Twig_Environment')) {
             $this->markTestSkipped('Twig is not installed.');
         }
 
-        $this->mapper = $this->getMock('Midgard\CreatePHP\RdfMapperInterface');
-        $this->factory = new RdfTypeFactory($this->mapper);
+        AnnotationRegistry::registerLoader(function($class) use ($autoload) {
+            $autoload->loadClass($class);
+            return class_exists($class, false);
+        });
+        AnnotationRegistry::registerFile(__DIR__.'/../../../../../../vendor/doctrine/phpcr-odm/lib/Doctrine/ODM/PHPCR/Mapping/Annotations/DoctrineAnnotations.php');
+
+        $reader = new \Doctrine\Common\Annotations\AnnotationReader();
+        $driver = new \Doctrine\ODM\PHPCR\Mapping\Driver\AnnotationDriver($reader, array('../../'));
+
+
+        $this->driver = new RdfDriverXml(array(__DIR__ . '/../../Metadata/rdf'));
+        $documentManager = \Doctrine\ODM\PHPCR\DocumentManager::create($this->getMock('PHPCR\\SessionInterface'), new \Doctrine\ODM\PHPCR\Configuration());
+        $registry = $this->getMock('Doctrine\\Common\\Persistence\\ManagerRegistry');
+        $registry
+            ->expects($this->any())
+            ->method('getManager')
+            ->will($this->returnValue($documentManager))
+        ;
+
+        $this->mapper = new \Midgard\CreatePHP\Mapper\DoctrinePhpcrOdmMapper($this->driver->getAllNames(), $registry);
+
+        $this->factory = new RdfTypeFactory($this->mapper, $this->driver);
 
         $this->twig = new \Twig_Environment();
         $this->twig->setLoader(new \Twig_Loader_Filesystem(__DIR__.'/templates'));
@@ -38,6 +69,7 @@ public function testNode()
     {
         $this->twig->addGlobal('mymodel', new Model);
 
+        /*
         $this->mapper->expects($this->any())
             ->method('getPropertyValue')
             ->will($this->returnValue('content text'))
@@ -50,7 +82,7 @@ public function testNode()
             ->method('createSubject')
             ->will($this->returnValue('/the/subject'))
         ;
-
+        */
         $xml = $this->renderXml('node.twig');
 
         $this->assertCompiledCorrectly($xml);
@@ -60,6 +92,7 @@ public function testNode()
     public function testNodeAs()
     {
         $this->twig->addGlobal('mymodel', new Model);
+        /*
         $this->mapper->expects($this->any())
             ->method('getPropertyValue')
             ->will($this->returnValue('content text'))
@@ -72,6 +105,7 @@ public function testNodeAs()
             ->method('createSubject')
             ->will($this->returnValue('/the/subject'))
         ;
+        */
 
         $xml = $this->renderXml('node_as.twig');
 
@@ -82,7 +116,7 @@ public function testFunctions()
     {
         $this->twig->addGlobal('mymodel', new Model);
 
-        $this->twig->addGlobal('mymodel', new Model);
+        /*
         $this->mapper->expects($this->any())
             ->method('getPropertyValue')
             ->will($this->returnValue('content text'))
@@ -95,6 +129,7 @@ public function testFunctions()
             ->method('createSubject')
             ->will($this->returnValue('/the/subject'))
         ;
+        */
 
         $xml = $this->renderXml('functions.twig');
 
diff --git a/tests/Test/Midgard/CreatePHP/Extension/Twig/RdfTypeFactory.php b/tests/Test/Midgard/CreatePHP/Extension/Twig/RdfTypeFactory.php
deleted file mode 100644
index 1702157..0000000
--- a/tests/Test/Midgard/CreatePHP/Extension/Twig/RdfTypeFactory.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-namespace Test\Midgard\CreatePHP\Extension\Twig;
-
-use Midgard\CreatePHP\RdfMapperInterface;
-use Midgard\CreatePHP\Entity\Controller as Type;
-
-use Test\Midgard\CreatePHP\Model;
-
-class RdfTypeFactory extends \Midgard\CreatePHP\Metadata\RdfTypeFactory
-{
-    /**
-     * @var RdfMapperInterface
-     */
-    private $mapper;
-
-    /**
-     * @param RdfMapperInterface $mapper the mapper to use in this project
-     */
-    public function __construct(RdfMapperInterface $mapper)
-    {
-        $this->mapper = $mapper;
-    }
-
-    /**
-     * Get the type if this is the expected model class
-     */
-    public function getTypeByObject($class) {
-        if ($class instanceof Model) {
-            $type = new Type($this->mapper);
-            $type->setVocabulary('dcterms', 'http://purl.org/dc/terms/');
-            $prop = new \Midgard\CreatePHP\Entity\Property('title', array());
-            $prop->setAttributes(array('property' => 'dcterms:title'));
-            $type->title = $prop;
-            return $type;
-        }
-
-        throw new \Exception('No type found for ' . get_class($class));
-    }
-
-}
\ No newline at end of file
diff --git a/tests/Test/Midgard/CreatePHP/Metadata/FunctionalRdfDriverXmlTest.php b/tests/Test/Midgard/CreatePHP/Metadata/FunctionalRdfDriverXmlTest.php
new file mode 100644
index 0000000..487355e
--- /dev/null
+++ b/tests/Test/Midgard/CreatePHP/Metadata/FunctionalRdfDriverXmlTest.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Test\Midgard\CreatePHP\Metadata;
+
+use Midgard\CreatePHP\RdfMapperInterface;
+use Midgard\CreatePHP\Metadata\RdfDriverXml;
+use Midgard\CreatePHP\Metadata\RdfTypeFactory;
+use Midgard\CreatePHP\Entity\Controller;
+
+use Test\Midgard\CreatePHP\Model;
+
+class FunctionalRdfDriverXmlTest extends RdfDriverBase
+{
+    /**
+     * @var \Midgard\CreatePHP\Metadata\RdfDriverInterface
+     */
+    private $driver;
+
+    private $mapper;
+
+    /**
+     * @var RdfTypeFactory
+     */
+    private $factory;
+
+    public function setUp()
+    {
+        $this->driver = new RdfDriverXml(array(__DIR__ . DIRECTORY_SEPARATOR . 'rdf'));
+        $this->mapper = new \Midgard\CreatePHP\tests\MockMapper();
+
+        $this->factory = new RdfTypeFactory($this->mapper, $this->driver);
+    }
+
+    public function testBind()
+    {
+        $type = $this->factory->getTypeByRdf('http://rdfs.org/sioc/ns#Post');
+        $this->assertInstanceOf('Midgard\\CreatePHP\\Entity\\EntityInterface', $type);
+        $object = array(
+            'title' => 'title',
+            'content' => 'content',
+            'tags'  => array('tee', 'too'),
+            'children' => array('title' => 'child', 'content' => 'childcontent'),
+        );
+        $type->createWithObject($object);
+    }
+}
diff --git a/tests/Test/Midgard/CreatePHP/Metadata/RdfDriverXmlTest.php b/tests/Test/Midgard/CreatePHP/Metadata/RdfDriverXmlTest.php
index 2724c51..35972e1 100644
--- a/tests/Test/Midgard/CreatePHP/Metadata/RdfDriverXmlTest.php
+++ b/tests/Test/Midgard/CreatePHP/Metadata/RdfDriverXmlTest.php
@@ -53,9 +53,10 @@ public function testLoadTypeForClassNodefinition()
     public function testGetAllNames()
     {
         $map = $this->driver->getAllNames();
-        $this->assertCount(1, $map);
+        $this->assertCount(2, $map);
         $types = array(
             'http://rdfs.org/sioc/ns#Post' => 'Test\\Midgard\\CreatePHP\\Model',
+            'http://rdfs.org/sioc/ns#Item' => 'Test\\Midgard\\CreatePHP\\Child',
         );
         $this->assertEquals($types, $map);
     }
diff --git a/tests/Test/Midgard/CreatePHP/Metadata/rdf/Test.Midgard.CreatePHP.Child.xml b/tests/Test/Midgard/CreatePHP/Metadata/rdf/Test.Midgard.CreatePHP.Child.xml
new file mode 100644
index 0000000..55014bc
--- /dev/null
+++ b/tests/Test/Midgard/CreatePHP/Metadata/rdf/Test.Midgard.CreatePHP.Child.xml
@@ -0,0 +1,10 @@
+<type
+     xmlns:sioc="http://rdfs.org/sioc/ns#"
+     xmlns:dcterms="http://purl.org/dc/terms/"
+     typeof="sioc:Item"
+>
+    <children>
+        <property property="dcterms:title" identifier="title" tag-name="h2"/>
+    </children>
+
+</type>
\ No newline at end of file
diff --git a/tests/Test/Midgard/CreatePHP/Metadata/rdf/string.xml b/tests/Test/Midgard/CreatePHP/Metadata/rdf/string.xml
new file mode 100644
index 0000000..bde9c46
--- /dev/null
+++ b/tests/Test/Midgard/CreatePHP/Metadata/rdf/string.xml
@@ -0,0 +1,10 @@
+<type
+     xmlns:sioc="http://rdfs.org/sioc/ns#"
+     xmlns:dcterms="http://purl.org/dc/terms/"
+     typeof="sioc:Post"
+     tag-name="li"
+>
+    <children>
+        <property property="dcterms:tag" tag-name="span"/>
+    </children>
+</type>
\ No newline at end of file
diff --git a/tests/Test/Midgard/CreatePHP/Model.php b/tests/Test/Midgard/CreatePHP/Model.php
index d1b582f..051c587 100644
--- a/tests/Test/Midgard/CreatePHP/Model.php
+++ b/tests/Test/Midgard/CreatePHP/Model.php
@@ -12,4 +12,12 @@ public function getContent()
     {
         return 'the content';
     }
+    public function getTags()
+    {
+        return array('test', 'php');
+    }
+    public function getChildren()
+    {
+        return array(new Child());
+    }
 }
\ No newline at end of file
diff --git a/tests/__files/MockMapper.php b/tests/__files/MockMapper.php
index c5a8e0b..90be8ef 100644
--- a/tests/__files/MockMapper.php
+++ b/tests/__files/MockMapper.php
@@ -33,10 +33,14 @@ public function isEditable($object)
 
     public function getChildren($object, CollectionInterface $collection)
     {
+        if (isset($object[$collection->getIdentifier()]))
+        {
+            return $object[$collection->getIdentifier()];
+        }
         $config = $collection->getConfig();
         if (empty($config['is_child']))
         {
-            throw new \Exception('wrong config');
+            throw new \Exception('Wrong configuration or missing data in object array for field "' . $collection->getIdentifier() . '"');
         }
         if (isset($object['children']))
         {