DataView: Implement interface IteratorAggregate

I'd like to foreach such.

modules/monitoring/library/Monitoring/DataView/DataView.php

@@ -3,6 +3,8 @@
 
 namespace Icinga\Module\Monitoring\DataView;
 
+use ArrayIterator;
+use IteratorAggregate;
 use Icinga\Data\QueryInterface;
 use Icinga\Data\Filter\Filter;
 use Icinga\Data\Filter\FilterMatch;
@@ -56,6 +58,16 @@ abstract class DataView implements QueryInterface, IteratorAggregate
     {
     }
 
+    /**
+     * Return a iterator for all rows of the result set
+     *
+     * @return  ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new ArrayIterator($this->fetchAll());
+    }
+
     /**
      * Get the query name this data view relies on
      *