diff --git a/src/admin/common/abstract/model/factory.php b/src/admin/common/abstract/model/factory.php
index 1155c6c..fc0b52b 100644
--- a/src/admin/common/abstract/model/factory.php
+++ b/src/admin/common/abstract/model/factory.php
@@ -47,6 +47,44 @@ abstract class AbstractCommonClubsModelFactory
     public abstract function getTableName();
     public abstract function getClassName();
     
+    // TODO Als Klassen formulieren
+    /*
+     * This method returns the relevant join operations on the data.
+     * The return value is an associated arrray whose keys are the names of the tables in the join.
+     * Each value of such joins is again an associative array.
+     * These arrays have the following entries:
+     *  - alias: The alias name of the table to use. Mandatory
+     *  - type: The type of the join. Can be inner, left, right or outer. Defaults to inner.
+     *  - on: Join constraint as a string representation.
+     *  - cols: The columns to insert in the query. Same structure as fetchAttributes() method
+     * 
+     * Example:
+     * array(
+     *    'mytable'=>array(
+     *        'alias'=>'t1',
+     *        'type'=>'left',
+     *        'on'=>'main.id = t1.clubid',
+     *        'cols'=>array(
+     *            'name'=>array(),
+     *            'count'=>array('type'=>'int', 'col'=>'numElements'
+     *        )
+     *    )
+     * )
+     */
+    protected function fetchJoins()
+    {
+        return array();
+    }
+    
+    private $joins = null;
+    public function getAttributes($force = False)
+    {
+        if($this->joins === null || $force)
+            $this->joins = $this->fetchJoins();
+            
+            return $this->joins;
+    }
+    
     /**
      * 
      * @param string $condition