[ZF-9396] Zend_Paginator:

- Fixed implemented the ArrayAccess interface.

git-svn-id: http://framework.zend.com/svn/framework/standard/trunk@22635 44c647ce-9c0f-0410-b52a-842ac1e357ba

src/SerializableLimitIterator.php

@@ -32,7 +32,7 @@
  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
-class SerializableLimitIterator extends \LimitIterator implements \Serializable
+class SerializableLimitIterator extends \LimitIterator implements \Serializable, \ArrayAccess
 {
 
     /**
@@ -87,4 +87,62 @@ public function unserialize($data)
         $this->seek($dataArr['pos']+$dataArr['offset']);
     }
 
+    /**
+     * Returns value of the Iterator
+     *
+     * @param int $offset
+     * @return mixed
+     */
+    public function offsetGet($offset)
+    {
+        $currentOffset = $this->key();
+        $this->seek($offset);
+        $current = $this->current();
+        $this->seek($currentOffset);
+        return $current;
+    }
+
+    /**
+     * Does nothing
+     * Required by the ArrayAccess implementation
+     *
+     * @param int $offset
+     * @param mixed $value
+     */
+    public function offsetSet($offset, $value)
+    {
+    }
+
+    /**
+     * Determine if a value of Iterator is set and is not NULL
+     *
+     * @param int $offset
+     */
+    public function offsetExists($offset)
+    {
+        if ($offset > 0 && $offset < $this->_count) {
+            try {
+                $currentOffset = $this->key();
+                $this->seek($offset);
+                $current = $this->current();
+                $this->seek($currentOffset);
+                return null !== $current;
+            } catch (OutOfBoundsException $e) {
+                // reset position in case of exception is assigned null
+                $this->seek($currentOffset);
+                return false;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Does nothing
+     * Required by the ArrayAccess implementation
+     *
+     * @param int $offset
+     */
+    public function offsetUnset($offset)
+    {
+    }
 }

test/PaginatorTest.php

@@ -932,6 +932,27 @@ public function testInvalidDataInConstructor_ThrowsException()
 
         $p = new Paginator\Paginator(array());
     }
+
+    /**
+     * @group ZF-9396
+     */
+    public function testArrayAccessInClassSerializableLimitIterator()
+    {
+        $iterator  = new ArrayIterator(array('zf9396', 'foo', null));
+        $paginator = Zend_Paginator::factory($iterator);
+
+        $this->assertEquals('zf9396', $paginator->getItem(1));
+
+        $items = $paginator->getAdapter()
+                           ->getItems(0, 10);
+
+        $this->assertEquals('foo', $items[1]);
+        $this->assertEquals(0, $items->key());
+        $this->assertFalse(isset($items[2]));
+        $this->assertTrue(isset($items[1]));
+        $this->assertFalse(isset($items[3]));
+        $this->assertEquals(0, $items->key());
+    }
 }
 
 class TestArrayAggregate implements Paginator\AdapterAggregate