[GH-7633] disallow cache partial objects

lib/Doctrine/ORM/Cache/DefaultQueryCache.php

@@ -260,7 +260,7 @@ public function put(QueryCacheKey $key, ResultSetMapping $rsm, $result, array $h
             throw new CacheException("Second-level cache query supports only select statements.");
         }
 
-        if (isset($hints[Query::HINT_FORCE_PARTIAL_LOAD]) && $hints[Query::HINT_FORCE_PARTIAL_LOAD]) {
+        if (isset($hints[Query\SqlWalker::HINT_PARTIAL]) && $hints[Query\SqlWalker::HINT_PARTIAL]) {
             throw new CacheException("Second level cache does not support partial entities.");
         }
 

lib/Doctrine/ORM/Query/SqlWalker.php

@@ -46,6 +46,11 @@ class SqlWalker implements TreeWalker
      */
     const HINT_DISTINCT = 'doctrine.distinct';
 
+    /**
+     * Used to mark a query as containing a PARTIAL expression, which needs to be known by SLC.
+     */
+    public const HINT_PARTIAL = 'doctrine.partial';
+
     /**
      * @var ResultSetMapping
      */
@@ -1366,6 +1371,8 @@ public function walkSelectExpression($selectExpression)
             default:
                 // IdentificationVariable or PartialObjectExpression
                 if ($expr instanceof AST\PartialObjectExpression) {
+                    $this->query->setHint(self::HINT_PARTIAL, true);
+
                     $dqlAlias = $expr->identificationVariable;
                     $partialFieldSet = $expr->partialFieldSet;
                 } else {

tests/Doctrine/Tests/ORM/Functional/SecondLevelCacheQueryCacheTest.php

@@ -1095,7 +1095,6 @@ public function testCacheablePartialQueryException()
         $this->loadFixturesCountries();
 
         $this->_em->createQuery("SELECT PARTIAL c.{id} FROM Doctrine\Tests\Models\Cache\Country c")
-            ->setHint(Query::HINT_FORCE_PARTIAL_LOAD, true)
             ->setCacheable(true)
             ->getResult();
     }