Fetchable: Add method fetch() which returns an iterator

library/Icinga/Data/Fetchable.php

@@ -3,11 +3,20 @@
 
 namespace Icinga\Data;
 
+use Iterator;
+
 /**
  * Interface for retrieving data
  */
 interface Fetchable
 {
+    /**
+     * Fetch and return all rows of the result set using an iterator
+     *
+     * @return  Iterator
+     */
+    public function fetch();
+
     /**
      * Retrieve an array containing all rows of the result set
      *

library/Icinga/Data/SimpleQuery.php

@@ -4,6 +4,7 @@
 namespace Icinga\Data;
 
 use ArrayIterator;
+use Iterator;
 use IteratorAggregate;
 use Icinga\Data\Filter\Filter;
 use Icinga\Exception\IcingaException;
@@ -103,11 +104,11 @@ class SimpleQuery implements QueryInterface, Queryable, IteratorAggregate
     /**
      * Return a iterable for this query's result
      *
-     * @return  ArrayIterator
+     * @return  Iterator
      */
     public function getIterator()
     {
-        return new ArrayIterator($this->fetchAll());
+        return $this->fetch();
     }
 
     /**
@@ -351,6 +352,16 @@ class SimpleQuery implements QueryInterface, Queryable, IteratorAggregate
         return $this->limitOffset;
     }
 
+    /**
+     * Fetch and return all rows of the result set using an iterator
+     *
+     * @return  ArrayIterator
+     */
+    public function fetch()
+    {
+        return new ArrayIterator($this->fetchAll());
+    }
+
     /**
      * Retrieve an array containing all rows of the result set
      *

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

@@ -3,7 +3,7 @@
 
 namespace Icinga\Module\Monitoring\DataView;
 
-use ArrayIterator;
+use Iterator;
 use IteratorAggregate;
 use Icinga\Data\QueryInterface;
 use Icinga\Data\Filter\Filter;
@@ -61,11 +61,11 @@ abstract class DataView implements QueryInterface, IteratorAggregate
     /**
      * Return a iterator for all rows of the result set
      *
-     * @return  ArrayIterator
+     * @return  Iterator
      */
     public function getIterator()
     {
-        return new ArrayIterator($this->fetchAll());
+        return $this->fetch();
     }
 
     /**
@@ -469,6 +469,16 @@ abstract class DataView implements QueryInterface, IteratorAggregate
         return $this->query->hasOffset();
     }
 
+    /**
+     * Fetch and return all rows of the result set using an iterator
+     *
+     * @return  Iterator
+     */
+    public function fetch()
+    {
+        return $this->getQuery()->fetch();
+    }
+
     /**
      * Retrieve an array containing all rows of the result set
      *