Add Criteria::fromFindCriteria

The goals is to be able to quick reproduce a criteria looking like parameters given to ORM find methods.

lib/Doctrine/Common/Collections/Criteria.php

@@ -75,6 +75,25 @@ public static function create()
         return new static();
     }
 
+    /**
+     * Creates an instance with same behaviour as criteria parameters passed on ORM find methods.
+     *
+     * @param mixed[] $findCriteria Array of different keys and values. Gets the same format as argument expected on
+     *                              ObjectRepository::findBy and ObjectRepository::findOneBy methods.
+     *
+     * @return Criteria
+     */
+    public static function fromFindCriteria(array $findCriteria)
+    {
+        $criteria = static::create();
+
+        foreach ($findCriteria as $key => $value) {
+            $criteria->andWhere(static::expr()->eq($key, $value));
+        }
+
+        return $criteria;
+    }
+
     /**
      * Returns the expression builder.
      *

tests/Doctrine/Tests/Common/Collections/CriteriaTest.php

@@ -15,6 +15,18 @@ public function testCreate()
         $this->assertInstanceOf('Doctrine\Common\Collections\Criteria', $criteria);
     }
 
+    public function testFromFindCriteria()
+    {
+        $criteria = Criteria::fromFindCriteria(array('name' => 'test', 'foo' => 42));
+
+        /** @var CompositeExpression $where */
+        $where = $criteria->getWhereExpression();
+        $this->assertInstanceOf('Doctrine\Common\Collections\Expr\CompositeExpression', $where);
+
+        $this->assertSame(CompositeExpression::TYPE_AND, $where->getType());
+        $this->assertCount(2, $where->getExpressionList());
+    }
+
     public function testConstructor()
     {
         $expr     = new Comparison("field", "=", "value");