- Bugfixes done on MySQL adapter caused by some changes while adding Mssql.

- WIP on Repository and QueryBuilder

src/Repository.php

@@ -21,8 +21,8 @@ class Repository
     public function __construct(string $entity, string $alias = self::DEFAULT_ALIAS, ConnectionAdapter $adapter = null) {
         $this->entityClass = $entity;
         $this->alias = $alias;
-        $this->adapter = $adapter;
-        $this->queryBuilder = new QueryBuilder( $adapter->adapter() );
+        $this->adapter = $adapter ?: Ulmus::$defaultAdapter;
+        $this->queryBuilder = new QueryBuilder( $this->adapter->adapter() );
         $this->entityResolver = Ulmus::resolveEntity($entity);
     }
 
@@ -45,6 +45,17 @@ class Repository
     {
         return $this->where($field, $value)->collectionFromQuery();
     }
+    
+    public function count() : int
+    {
+        $this->select("count(*) as totalItem");
+        
+        foreach(Ulmus::iterateQueryBuilder($this->selectSqlQuery()->queryBuilder) as $entityData) {
+            return $entityData['totalItem'];
+        }
+
+        return 0;
+    }
 
     public function deleteOne() 
     {