diff --git a/src/Metadata/Property/Factory/AbstractFilePropertyMetadataFactory.php b/src/Metadata/Property/Factory/AbstractFilePropertyMetadataFactory.php
new file mode 100644
index 00000000000..f1d41f9347b
--- /dev/null
+++ b/src/Metadata/Property/Factory/AbstractFilePropertyMetadataFactory.php
@@ -0,0 +1,144 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace ApiPlatform\Core\Metadata\Property\Factory;
+
+use ApiPlatform\Core\Exception\InvalidArgumentException;
+use ApiPlatform\Core\Exception\PropertyNotFoundException;
+use ApiPlatform\Core\Metadata\Property\PropertyMetadata;
+
+/**
+ * Common base class to load properties's metadata from files.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ *
+ * @internal
+ */
+abstract class AbstractFilePropertyMetadataFactory implements PropertyMetadataFactoryInterface
+{
+    protected $paths;
+    protected $decorated;
+
+    /**
+     * @param string[]                              $paths
+     * @param PropertyMetadataFactoryInterface|null $decorated
+     */
+    public function __construct(array $paths, PropertyMetadataFactoryInterface $decorated = null)
+    {
+        $this->paths = $paths;
+        $this->decorated = $decorated;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function create(string $resourceClass, string $property, array $options = []): PropertyMetadata
+    {
+        $parentPropertyMetadata = null;
+        if ($this->decorated) {
+            try {
+                $parentPropertyMetadata = $this->decorated->create($resourceClass, $property, $options);
+            } catch (PropertyNotFoundException $propertyNotFoundException) {
+                // Ignore not found exception from decorated factories
+            }
+        }
+
+        if (
+            !property_exists($resourceClass, $property) ||
+            empty($propertyMetadata = $this->getMetadata($resourceClass, $property))
+        ) {
+            return $this->handleNotFound($parentPropertyMetadata, $resourceClass, $property);
+        }
+
+        if ($parentPropertyMetadata) {
+            return $this->update($parentPropertyMetadata, $propertyMetadata);
+        }
+
+        return new PropertyMetadata(
+            null,
+            $propertyMetadata['description'],
+            $propertyMetadata['readable'],
+            $propertyMetadata['writable'],
+            $propertyMetadata['readableLink'],
+            $propertyMetadata['writableLink'],
+            $propertyMetadata['required'],
+            $propertyMetadata['identifier'],
+            $propertyMetadata['iri'],
+            null,
+            $propertyMetadata['attributes']
+        );
+    }
+
+    /**
+     * Extracts metadata from the XML tree.
+     *
+     * @param string $resourceClass
+     * @param string $propertyName
+     *
+     * @throws InvalidArgumentException
+     *
+     * @return array
+     */
+    abstract protected function getMetadata(string $resourceClass, string $propertyName): array;
+
+    /**
+     * Returns the metadata from the decorated factory if available or throws an exception.
+     *
+     * @param PropertyMetadata|null $parentPropertyMetadata
+     * @param string                $resourceClass
+     * @param string                $property
+     *
+     * @throws PropertyNotFoundException
+     *
+     * @return PropertyMetadata
+     */
+    private function handleNotFound(PropertyMetadata $parentPropertyMetadata = null, string $resourceClass, string $property): PropertyMetadata
+    {
+        if ($parentPropertyMetadata) {
+            return $parentPropertyMetadata;
+        }
+
+        throw new PropertyNotFoundException(sprintf('Property "%s" of the resource class "%s" not found.', $property, $resourceClass));
+    }
+
+    /**
+     * Creates a new instance of metadata if the property is not already set.
+     *
+     * @param PropertyMetadata $propertyMetadata
+     * @param array            $metadata
+     *
+     * @return PropertyMetadata
+     */
+    private function update(PropertyMetadata $propertyMetadata, array $metadata): PropertyMetadata
+    {
+        $metadataAccessors = [
+            'description' => 'get',
+            'readable' => 'is',
+            'writable' => 'is',
+            'writableLink' => 'is',
+            'readableLink' => 'is',
+            'required' => 'is',
+            'identifier' => 'is',
+            'iri' => 'get',
+            'attributes' => 'get',
+        ];
+
+        foreach ($metadataAccessors as $metadataKey => $accessorPrefix) {
+            if (null === $metadata[$metadataKey] || null !== $propertyMetadata->{$accessorPrefix.ucfirst($metadataKey)}()) {
+                continue;
+            }
+
+            $propertyMetadata = $propertyMetadata->{'with'.ucfirst($metadataKey)}($metadata[$metadataKey]);
+        }
+
+        return $propertyMetadata;
+    }
+}
diff --git a/src/Metadata/Property/Factory/XmlPropertyMetadataFactory.php b/src/Metadata/Property/Factory/XmlPropertyMetadataFactory.php
index 203c517fd73..d67f26a2181 100644
--- a/src/Metadata/Property/Factory/XmlPropertyMetadataFactory.php
+++ b/src/Metadata/Property/Factory/XmlPropertyMetadataFactory.php
@@ -12,8 +12,6 @@
 namespace ApiPlatform\Core\Metadata\Property\Factory;
 
 use ApiPlatform\Core\Exception\InvalidArgumentException;
-use ApiPlatform\Core\Exception\PropertyNotFoundException;
-use ApiPlatform\Core\Metadata\Property\PropertyMetadata;
 use Symfony\Component\Config\Util\XmlUtils;
 
 /**
@@ -21,94 +19,14 @@
  *
  * @author Baptiste Meyer <baptiste.meyer@gmail.com>
  */
-class XmlPropertyMetadataFactory implements PropertyMetadataFactoryInterface
+final class XmlPropertyMetadataFactory extends AbstractFilePropertyMetadataFactory
 {
     const RESOURCE_SCHEMA = __DIR__.'/../../schema/metadata.xsd';
 
-    private $paths;
-    private $decorated;
-
-    /**
-     * @param string[]                              $paths
-     * @param PropertyMetadataFactoryInterface|null $decorated
-     */
-    public function __construct(array $paths, PropertyMetadataFactoryInterface $decorated = null)
-    {
-        $this->paths = $paths;
-        $this->decorated = $decorated;
-    }
-
     /**
      * {@inheritdoc}
      */
-    public function create(string $resourceClass, string $property, array $options = []): PropertyMetadata
-    {
-        $parentPropertyMetadata = null;
-        if ($this->decorated) {
-            try {
-                $parentPropertyMetadata = $this->decorated->create($resourceClass, $property, $options);
-            } catch (PropertyNotFoundException $propertyNotFoundException) {
-                // Ignore not found exception from decorated factories
-            }
-        }
-
-        if (
-            !property_exists($resourceClass, $property) ||
-            empty($propertyMetadata = $this->getMetadata($resourceClass, $property))
-        ) {
-            return $this->handleNotFound($parentPropertyMetadata, $resourceClass, $property);
-        }
-
-        if ($parentPropertyMetadata) {
-            return $this->update($parentPropertyMetadata, $propertyMetadata);
-        }
-
-        return new PropertyMetadata(
-            null,
-            $propertyMetadata['description'],
-            $propertyMetadata['readable'],
-            $propertyMetadata['writable'],
-            $propertyMetadata['readableLink'],
-            $propertyMetadata['writableLink'],
-            $propertyMetadata['required'],
-            $propertyMetadata['identifier'],
-            $propertyMetadata['iri'],
-            null,
-            $propertyMetadata['attributes']
-        );
-    }
-
-    /**
-     * Returns the metadata from the decorated factory if available or throws an exception.
-     *
-     * @param PropertyMetadata|null $parentPropertyMetadata
-     * @param string                $resourceClass
-     * @param string                $property
-     *
-     * @throws PropertyNotFoundException
-     *
-     * @return PropertyMetadata
-     */
-    private function handleNotFound(PropertyMetadata $parentPropertyMetadata = null, string $resourceClass, string $property): PropertyMetadata
-    {
-        if ($parentPropertyMetadata) {
-            return $parentPropertyMetadata;
-        }
-
-        throw new PropertyNotFoundException(sprintf('Property "%s" of the resource class "%s" not found.', $property, $resourceClass));
-    }
-
-    /**
-     * Extracts metadata from the XML tree.
-     *
-     * @param string $resourceClass
-     * @param string $propertyName
-     *
-     * @throws InvalidArgumentException
-     *
-     * @return array
-     */
-    private function getMetadata(string $resourceClass, string $propertyName): array
+    protected function getMetadata(string $resourceClass, string $propertyName): array
     {
         foreach ($this->paths as $path) {
             try {
@@ -166,37 +84,4 @@ private function getAttributes(\SimpleXMLElement $element): array
 
         return $attributes;
     }
-
-    /**
-     * Creates a new instance of metadata if the property is not already set.
-     *
-     * @param PropertyMetadata $propertyMetadata
-     * @param array            $metadata
-     *
-     * @return PropertyMetadata
-     */
-    private function update(PropertyMetadata $propertyMetadata, array $metadata): PropertyMetadata
-    {
-        $metadataAccessors = [
-            'description' => 'get',
-            'readable' => 'is',
-            'writable' => 'is',
-            'writableLink' => 'is',
-            'readableLink' => 'is',
-            'required' => 'is',
-            'identifier' => 'is',
-            'iri' => 'get',
-            'attributes' => 'get',
-        ];
-
-        foreach ($metadataAccessors as $metadataKey => $accessorPrefix) {
-            if (null === $metadata[$metadataKey] || null !== $propertyMetadata->{$accessorPrefix.ucfirst($metadataKey)}()) {
-                continue;
-            }
-
-            $propertyMetadata = $propertyMetadata->{'with'.ucfirst($metadataKey)}($metadata[$metadataKey]);
-        }
-
-        return $propertyMetadata;
-    }
 }
diff --git a/src/Metadata/Property/Factory/XmlPropertyNameCollectionFactory.php b/src/Metadata/Property/Factory/XmlPropertyNameCollectionFactory.php
index b980180d501..3dd31510c8c 100644
--- a/src/Metadata/Property/Factory/XmlPropertyNameCollectionFactory.php
+++ b/src/Metadata/Property/Factory/XmlPropertyNameCollectionFactory.php
@@ -21,7 +21,7 @@
  *
  * @author Baptiste Meyer <baptiste.meyer@gmail.com>
  */
-class XmlPropertyNameCollectionFactory implements PropertyNameCollectionFactoryInterface
+final class XmlPropertyNameCollectionFactory implements PropertyNameCollectionFactoryInterface
 {
     const RESOURCE_SCHEMA = __DIR__.'/../../schema/metadata.xsd';
 
diff --git a/src/Metadata/Property/Factory/YamlPropertyMetadataFactory.php b/src/Metadata/Property/Factory/YamlPropertyMetadataFactory.php
index 15e5aee599c..2d52e800c28 100644
--- a/src/Metadata/Property/Factory/YamlPropertyMetadataFactory.php
+++ b/src/Metadata/Property/Factory/YamlPropertyMetadataFactory.php
@@ -12,8 +12,6 @@
 namespace ApiPlatform\Core\Metadata\Property\Factory;
 
 use ApiPlatform\Core\Exception\InvalidArgumentException;
-use ApiPlatform\Core\Exception\PropertyNotFoundException;
-use ApiPlatform\Core\Metadata\Property\PropertyMetadata;
 use Symfony\Component\Yaml\Exception\ParseException;
 use Symfony\Component\Yaml\Yaml;
 
@@ -22,93 +20,14 @@
  *
  * @author Baptiste Meyer <baptiste.meyer@gmail.com>
  */
-class YamlPropertyMetadataFactory implements PropertyMetadataFactoryInterface
+final class YamlPropertyMetadataFactory extends AbstractFilePropertyMetadataFactory
 {
-    private $paths;
-    private $decorated;
-
-    /**
-     * @param array                                 $paths
-     * @param PropertyMetadataFactoryInterface|null $decorated
-     */
-    public function __construct(array $paths, PropertyMetadataFactoryInterface $decorated = null)
-    {
-        $this->paths = $paths;
-        $this->decorated = $decorated;
-    }
-
     /**
      * {@inheritdoc}
-     */
-    public function create(string $resourceClass, string $property, array $options = []): PropertyMetadata
-    {
-        $parentPropertyMetadata = null;
-        if ($this->decorated) {
-            try {
-                $parentPropertyMetadata = $this->decorated->create($resourceClass, $property, $options);
-            } catch (PropertyNotFoundException $propertyNotFoundException) {
-                // Ignore not found exception from decorated factories
-            }
-        }
-
-        if (
-            !property_exists($resourceClass, $property) ||
-            empty($propertyMetadata = $this->getMetadata($resourceClass, $property))
-        ) {
-            return $this->handleNotFound($parentPropertyMetadata, $resourceClass, $property);
-        }
-
-        if ($parentPropertyMetadata) {
-            return $this->update($parentPropertyMetadata, $propertyMetadata);
-        }
-
-        return new PropertyMetadata(
-            null,
-            $propertyMetadata['description'],
-            $propertyMetadata['readable'],
-            $propertyMetadata['writable'],
-            $propertyMetadata['readableLink'],
-            $propertyMetadata['writableLink'],
-            $propertyMetadata['required'],
-            $propertyMetadata['identifier'],
-            $propertyMetadata['iri'],
-            null,
-            $propertyMetadata['attributes']
-        );
-    }
-
-    /**
-     * Returns the metadata from the decorated factory if available or throws an exception.
-     *
-     * @param PropertyMetadata|null $parentPropertyMetadata
-     * @param string                $resourceClass
-     * @param string                $property
-     *
-     * @throws PropertyNotFoundException
-     *
-     * @return PropertyMetadata
-     */
-    private function handleNotFound(PropertyMetadata $parentPropertyMetadata = null, string $resourceClass, string $property): PropertyMetadata
-    {
-        if ($parentPropertyMetadata) {
-            return $parentPropertyMetadata;
-        }
-
-        throw new PropertyNotFoundException(sprintf('Property "%s" of the resource class "%s" not found.', $property, $resourceClass));
-    }
-
-    /**
-     * Extracts metadata from the YAML tree.
-     *
-     * @param string $resourceClass
-     * @param string $property
      *
      * @throws ParseException
-     * @throws InvalidArgumentException
-     *
-     * @return array
      */
-    private function getMetadata(string $resourceClass, string $property): array
+    protected function getMetadata(string $resourceClass, string $property): array
     {
         foreach ($this->paths as $path) {
             try {
@@ -178,37 +97,4 @@ private function getMetadata(string $resourceClass, string $property): array
 
         return [];
     }
-
-    /**
-     * Creates a new instance of metadata if the property is not already set.
-     *
-     * @param PropertyMetadata $propertyMetadata
-     * @param array            $metadata
-     *
-     * @return PropertyMetadata
-     */
-    private function update(PropertyMetadata $propertyMetadata, array $metadata): PropertyMetadata
-    {
-        $metadataAccessors = [
-            'description' => 'get',
-            'readable' => 'is',
-            'writable' => 'is',
-            'writableLink' => 'is',
-            'readableLink' => 'is',
-            'required' => 'is',
-            'identifier' => 'is',
-            'iri' => 'get',
-            'attributes' => 'get',
-        ];
-
-        foreach ($metadataAccessors as $metadataKey => $accessorPrefix) {
-            if (null === $metadata[$metadataKey] || null !== $propertyMetadata->{$accessorPrefix.ucfirst($metadataKey)}()) {
-                continue;
-            }
-
-            $propertyMetadata = $propertyMetadata->{'with'.ucfirst($metadataKey)}($metadata[$metadataKey]);
-        }
-
-        return $propertyMetadata;
-    }
 }
diff --git a/src/Metadata/Property/Factory/YamlPropertyNameCollectionFactory.php b/src/Metadata/Property/Factory/YamlPropertyNameCollectionFactory.php
index 3d48f3b06df..a5997aa711c 100644
--- a/src/Metadata/Property/Factory/YamlPropertyNameCollectionFactory.php
+++ b/src/Metadata/Property/Factory/YamlPropertyNameCollectionFactory.php
@@ -22,7 +22,7 @@
  *
  * @author Baptiste Meyer <baptiste.meyer@gmail.com>
  */
-class YamlPropertyNameCollectionFactory implements PropertyNameCollectionFactoryInterface
+final class YamlPropertyNameCollectionFactory implements PropertyNameCollectionFactoryInterface
 {
     private $paths;
     private $decorated;