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diff --git a/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/Pagination/WhereInWalker.php b/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/Pagination/WhereInWalker.php
new file mode 100644
index 0000000..9b919e6
--- /dev/null
+++ b/vendor/doctrine/orm/lib/Doctrine/ORM/Tools/Pagination/WhereInWalker.php
@@ -0,0 +1,148 @@
+<?php
+/**
+ * Doctrine ORM
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE. This license can also be viewed
+ * at http://hobodave.com/license.txt
+ *
+ * @category    DoctrineExtensions
+ * @package     DoctrineExtensions\Paginate
+ * @author      David Abdemoulaie <dave@hobodave.com>
+ * @copyright   Copyright (c) 2010 David Abdemoulaie (http://hobodave.com/)
+ * @license     http://hobodave.com/license.txt New BSD License
+ */
+
+namespace Doctrine\ORM\Tools\Pagination;
+
+use Doctrine\ORM\Query\AST\ArithmeticExpression,
+    Doctrine\ORM\Query\AST\SimpleArithmeticExpression,
+    Doctrine\ORM\Query\TreeWalkerAdapter,
+    Doctrine\ORM\Query\AST\SelectStatement,
+    Doctrine\ORM\Query\AST\PathExpression,
+    Doctrine\ORM\Query\AST\InExpression,
+    Doctrine\ORM\Query\AST\NullComparisonExpression,
+    Doctrine\ORM\Query\AST\InputParameter,
+    Doctrine\ORM\Query\AST\ConditionalPrimary,
+    Doctrine\ORM\Query\AST\ConditionalTerm,
+    Doctrine\ORM\Query\AST\ConditionalExpression,
+    Doctrine\ORM\Query\AST\ConditionalFactor,
+    Doctrine\ORM\Query\AST\WhereClause;
+
+/**
+ * Replaces the whereClause of the AST with a WHERE id IN (:foo_1, :foo_2) equivalent
+ *
+ * @category    DoctrineExtensions
+ * @package     DoctrineExtensions\Paginate
+ * @author      David Abdemoulaie <dave@hobodave.com>
+ * @copyright   Copyright (c) 2010 David Abdemoulaie (http://hobodave.com/)
+ * @license     http://hobodave.com/license.txt New BSD License
+ */
+class WhereInWalker extends TreeWalkerAdapter
+{
+    /**
+     * ID Count hint name
+     */
+    const HINT_PAGINATOR_ID_COUNT = 'doctrine.id.count';
+
+    /**
+     * Primary key alias for query
+     */
+    const PAGINATOR_ID_ALIAS = 'dpid';
+
+    /**
+     * Replaces the whereClause in the AST
+     *
+     * Generates a clause equivalent to WHERE IN (:dpid_1, :dpid_2, ...)
+     *
+     * The parameter namespace (dpid) is defined by
+     * the PAGINATOR_ID_ALIAS
+     *
+     * The total number of parameters is retrieved from
+     * the HINT_PAGINATOR_ID_COUNT query hint
+     *
+     * @param  SelectStatement $AST
+     * @return void
+     */
+    public function walkSelectStatement(SelectStatement $AST)
+    {
+        $rootComponents = array();
+        foreach ($this->_getQueryComponents() as $dqlAlias => $qComp) {
+            $isParent = array_key_exists('parent', $qComp)
+                && $qComp['parent'] === null
+                && $qComp['nestingLevel'] == 0
+            ;
+            if ($isParent) {
+                $rootComponents[] = array($dqlAlias => $qComp);
+            }
+        }
+        if (count($rootComponents) > 1) {
+            throw new \RuntimeException("Cannot count query which selects two FROM components, cannot make distinction");
+        }
+        $root                = reset($rootComponents);
+        $parentName          = key($root);
+        $parent              = current($root);
+        $identifierFieldName = $parent['metadata']->getSingleIdentifierFieldName();
+
+        $pathType = PathExpression::TYPE_STATE_FIELD;
+        if (isset($parent['metadata']->associationMappings[$identifierFieldName])) {
+            $pathType = PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION;
+        }
+
+        $pathExpression       = new PathExpression(PathExpression::TYPE_STATE_FIELD | PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION, $parentName, $identifierFieldName);
+        $pathExpression->type = $pathType;
+
+        $count = $this->_getQuery()->getHint(self::HINT_PAGINATOR_ID_COUNT);
+
+        if ($count > 0) {
+            $arithmeticExpression = new ArithmeticExpression();
+            $arithmeticExpression->simpleArithmeticExpression = new SimpleArithmeticExpression(
+                array($pathExpression)
+            );
+            $expression = new InExpression($arithmeticExpression);
+            $ns = self::PAGINATOR_ID_ALIAS;
+
+            for ($i = 1; $i <= $count; $i++) {
+                $expression->literals[] = new InputParameter(":{$ns}_$i");
+            }
+        } else {
+            $expression = new NullComparisonExpression($pathExpression);
+            $expression->not = false;
+        }
+
+        $conditionalPrimary = new ConditionalPrimary;
+        $conditionalPrimary->simpleConditionalExpression = $expression;
+        if ($AST->whereClause) {
+            if ($AST->whereClause->conditionalExpression instanceof ConditionalTerm) {
+                $AST->whereClause->conditionalExpression->conditionalFactors[] = $conditionalPrimary;
+            } elseif ($AST->whereClause->conditionalExpression instanceof ConditionalPrimary) {
+                $AST->whereClause->conditionalExpression = new ConditionalExpression(array(
+                    new ConditionalTerm(array(
+                        $AST->whereClause->conditionalExpression,
+                        $conditionalPrimary
+                    ))
+                ));
+            } elseif ($AST->whereClause->conditionalExpression instanceof ConditionalExpression
+                || $AST->whereClause->conditionalExpression instanceof ConditionalFactor
+            ) {
+                $tmpPrimary = new ConditionalPrimary;
+                $tmpPrimary->conditionalExpression = $AST->whereClause->conditionalExpression;
+                $AST->whereClause->conditionalExpression = new ConditionalTerm(array(
+                    $tmpPrimary,
+                    $conditionalPrimary
+                ));
+            }
+        } else {
+            $AST->whereClause = new WhereClause(
+                new ConditionalExpression(array(
+                    new ConditionalTerm(array(
+                        $conditionalPrimary
+                    ))
+                ))
+            );
+        }
+    }
+}
+