DDC-1454 - Fix exists() for Joined table inheritance

lib/Doctrine/ORM/Persisters/BasicEntityPersister.php

@@ -1492,8 +1492,8 @@ class BasicEntityPersister
             $criteria = array_merge($criteria, $extraConditions);
         }
 
-        $sql = 'SELECT 1'
-             . ' FROM ' . $this->_class->getQuotedTableName($this->_platform) . ' ' . $this->_getSQLTableAlias($this->_class->name)
+        $sql = 'SELECT 1 '
+             . $this->getLockTablesSql()
              . ' WHERE ' . $this->_getSelectConditionSQL($criteria);
 
         list($params, $types) = $this->expandParameters($criteria);

tests/Doctrine/Tests/ORM/Functional/Ticket/DDC1454Test.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\UnitOfWork;
+
+require_once __DIR__ . '/../../../TestInit.php';
+
+/**
+ * @group DDC-1454
+ */
+class DDC1454Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    protected function setUp()
+    {
+        parent::setUp();
+
+        try {
+            $this->_schemaTool->createSchema(array(
+                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC1454File'),
+                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC1454Picture'),
+            ));
+        } catch (\Exception $ignored) {
+
+        }
+    }
+
+    public function testFailingCase()
+    {
+        $pic = new DDC1454Picture();
+        $this->_em->getUnitOfWork()->getEntityState($pic);
+    }
+
+}
+
+/**
+ * @Entity
+ */
+class DDC1454Picture extends DDC1454File
+{
+
+}
+
+/**
+ * @Entity
+ * @InheritanceType("JOINED")
+ * @DiscriminatorColumn(name="discr", type="string")
+ * @DiscriminatorMap({"picture" = "DDC1454Picture"})
+ */
+class DDC1454File
+{
+    /**
+     * @Column(name="file_id", type="integer")
+     * @Id
+     */
+    public $fileId;
+
+    public function __construct() {
+        $this->fileId = rand();
+    }
+
+    /**
+     * Get fileId
+     */
+    public function getFileId() {
+        return $this->fileId;
+    }
+
+}