Added support for virtual properties when the exclusion policy is set to "all" by making them allways exposed by default.

Metadata/Driver/AnnotationDriver.php

@@ -122,7 +122,8 @@ class AnnotationDriver implements DriverInterface
 
             foreach ($propertiesMetadata as $propertyKey => $propertyMetadata) {
 
-                $isExclude = $isExpose = false;
+                $isExclude = false;
+                $isExpose = $propertyMetadata instanceof VirtualPropertyMetadata;
                 $AccessType = $classAccessType;
                 $accessor = array(null, null);
 

Metadata/Driver/XmlDriver.php

@@ -88,7 +88,8 @@ class XmlDriver extends AbstractFileDriver
 
             foreach ($propertiesMetadata as $propertyKey => $pMetadata) {
 
-                $isExclude = $isExpose = false;
+                $isExclude = false;
+                $isExpose = $pMetadata instanceof VirtualPropertyMetadata;
 
                 $pElem = $propertiesNodes[$propertyKey];
                 if (!empty( $pElem )) {

Metadata/Driver/YamlDriver.php

@@ -81,7 +81,9 @@ class YamlDriver extends AbstractFileDriver
 
             foreach ($propertiesMetadata as $pName => $pMetadata) {
 
-                $isExclude = $isExpose = false;
+                $isExclude = false;
+                $isExpose = $pMetadata instanceof VirtualPropertyMetadata;
+
                 if (isset($config['properties'][$pName])) {
                     $pConfig = $config['properties'][$pName];