- Bugfix within PdoObject and Repository

- Added some utilities methods to EntityCollection

src/Repository.php

@@ -105,9 +105,7 @@ class Repository
                 throw new \Exception(sprintf("No primary key found for entity %s", $this->entityClass));
             }
 
-            $diff = array_diff_assoc($dataset, $entity->entityGetDataset(true));
-            
-            if ( [] !== $diff ) {
+            if ( [] !== $diff = $this->generateDatasetDiff($entity) ) {
                 $pkField = key($primaryKeyDefinition);
                 $pkFieldName = $primaryKeyDefinition[$pkField]->name ?? $pkField;
                 $this->where($pkFieldName, $dataset[$pkFieldName]);
@@ -128,6 +126,11 @@ class Repository
         }
     }
     
+    public function generateDatasetDiff(object $entity) : array
+    {
+        return array_diff_assoc( array_change_key_case($entity->toArray()), array_change_key_case($entity->entityGetDataset(true)) );
+    }
+    
     public function yieldAll() : \Generator
     {