[2.0][DDC-335][DDC-347][DDC-317] Fixed. Also prepared DQL for CASE/COALESCE/NULLIF support.

lib/Doctrine/Common/DoctrineException.php

@@ -124,10 +124,6 @@ class DoctrineException extends \Exception
         if ( ! self::$_messages) {
             // Lazy-init messages
             self::$_messages = array(
-                'DoctrineException#partialObjectsAreDangerous' =>
-                        "Loading partial objects is dangerous. Fetch full objects or consider " .
-                        "using a different fetch mode. If you really want partial objects, " .
-                        "set the doctrine.forcePartialLoad query hint to TRUE.",
                 'QueryException#nonUniqueResult' =>
                         "The query contains more than one result."
             );

lib/Doctrine/ORM/Internal/Hydration/ArrayHydrator.php

@@ -79,6 +79,9 @@ class ArrayHydrator extends AbstractHydrator
         if (isset($rowData['scalars'])) {
             $scalars = $rowData['scalars'];
             unset($rowData['scalars']);
+            if (empty($rowData)) {
+                ++$this->_resultCounter;
+            }
         }
 
         // 2) Now hydrate the data found in the current row.
@@ -129,7 +132,7 @@ class ArrayHydrator extends AbstractHydrator
                             }
                             end($baseElement[$relationAlias]);
                             $this->_identifierMap[$path][$id[$parent]][$id[$dqlAlias]] =
-                            key($baseElement[$relationAlias]);
+                                    key($baseElement[$relationAlias]);
                         }
                     } else if ( ! isset($baseElement[$relationAlias])) {
                         $baseElement[$relationAlias] = array();
@@ -177,6 +180,10 @@ class ArrayHydrator extends AbstractHydrator
                     $this->_identifierMap[$dqlAlias][$id[$dqlAlias]] = key($result);
                 } else {
                     $index = $this->_identifierMap[$dqlAlias][$id[$dqlAlias]];
+                    /*if ($this->_rsm->isMixed) {
+                        $result[] =& $result[$index];
+                        ++$this->_resultCounter;
+                    }*/
                 }
                 $this->updateResultPointer($result, $index, $dqlAlias, false);
             }

lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php

@@ -251,6 +251,9 @@ class ObjectHydrator extends AbstractHydrator
         if (isset($rowData['scalars'])) {
             $scalars = $rowData['scalars'];
             unset($rowData['scalars']);
+            if (empty($rowData)) {
+                ++$this->_resultCounter;
+            }
         }
 
         // Hydrate the data chunks
@@ -409,14 +412,18 @@ class ObjectHydrator extends AbstractHydrator
                         $this->_identifierMap[$dqlAlias][$id[$dqlAlias]] = $this->_resultCounter;
                         ++$this->_resultCounter;
                     }
-                    
+
                     // Update result pointer
                     $this->_resultPointers[$dqlAlias] = $element;
-                    
+
                 } else {
                     // Update result pointer
                     $index = $this->_identifierMap[$dqlAlias][$id[$dqlAlias]];
                     $this->_resultPointers[$dqlAlias] = $result[$index];
+                    /*if ($this->_rsm->isMixed) {
+                        $result[] = $result[$index];
+                        ++$this->_resultCounter;
+                    }*/
                 }
             }
         }

lib/Doctrine/ORM/Mapping/OneToOneMapping.php

@@ -278,7 +278,7 @@ class OneToOneMapping extends AssociationMapping
     /**
      * @internal Experimental. For MetaModel API, Doctrine 2.1 or later.
      */
-    public static function __set_state(array $state)
+    /*public static function __set_state(array $state)
     {
         $assoc = new self(array());
         $assoc->isOptional = $state['isOptional'];
@@ -302,5 +302,5 @@ class OneToOneMapping extends AssociationMapping
         $assoc->sourceFieldName = $state['sourceFieldName'];
         
         return $assoc;
-    }
+    }*/
 }

lib/Doctrine/ORM/Query/AST/ASTException.php

+<?php
+
+namespace Doctrine\ORM\Query\AST;
+
+use Doctrine\ORM\Query\QueryException;
+
+class ASTException extends QueryException
+{
+    public static function noDispatchForNode($node)
+    {
+        return new self("Double-dispatch for node " . get_class($node) . " is not supported.");
+    }
+}
\ No newline at end of file

lib/Doctrine/ORM/Query/AST/Functions/SizeFunction.php

@@ -41,6 +41,7 @@ class SizeFunction extends FunctionNode
 
     /**
      * @override
+     * @todo If the collection being counted is already joined, the SQL can be simpler (more efficient).
      */
     public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
     {

lib/Doctrine/ORM/Query/AST/Join.php

@@ -38,13 +38,10 @@ class Join extends Node
     const JOIN_TYPE_LEFT = 1;
     const JOIN_TYPE_LEFTOUTER = 2;
     const JOIN_TYPE_INNER = 3;
-    const JOIN_WHERE_ON = 1;
-    const JOIN_WHERE_WITH = 2;
 
     public $joinType = self::JOIN_TYPE_INNER;    
     public $joinAssociationPathExpression = null;
     public $aliasIdentificationVariable = null;
-    public $whereType = self::JOIN_WHERE_WITH;
     public $conditionalExpression = null;
 
     public function __construct($joinType, $joinAssocPathExpr, $aliasIdentVar)

lib/Doctrine/ORM/Query/AST/Node.php

@@ -34,7 +34,17 @@ namespace Doctrine\ORM\Query\AST;
  */
 abstract class Node
 {
-    abstract public function dispatch($walker);
+    /**
+     * Double-dispatch method, supposed to dispatch back to the walker.
+     * 
+     * Implementation is not mandatory for all nodes.
+     * 
+     * @param $walker
+     */
+    public function dispatch($walker)
+    {
+        throw ASTException::noDispatchForNode($this);
+    }
     
     /**
      * Dumps the AST Node into a string representation for information purpose only

lib/Doctrine/ORM/Query/AST/PartialObjectExpression.php

+<?php
+
+namespace Doctrine\ORM\Query\AST;
+
+class PartialObjectExpression extends Node
+{
+    public $identificationVariable;
+    public $partialFieldSet;
+    
+    public function __construct($identificationVariable, array $partialFieldSet)
+    {
+        $this->identificationVariable = $identificationVariable;
+        $this->partialFieldSet = $partialFieldSet;
+    }
+}
\ No newline at end of file

lib/Doctrine/ORM/Query/Lexer.php

@@ -88,7 +88,6 @@ class Lexer extends \Doctrine\Common\Lexer
     const T_NULL                = 145;
     const T_OF                  = 146;
     const T_OFFSET              = 147;
-    const T_ON                  = 148;
     const T_OPEN_PARENTHESIS    = 149;
     const T_OR                  = 150;
     const T_ORDER               = 151;
@@ -104,8 +103,9 @@ class Lexer extends \Doctrine\Common\Lexer
     const T_UPDATE              = 161;
     const T_WHERE               = 162;
     const T_WITH                = 163;
-
-    private $_keywordsTable;
+    const T_PARTIAL             = 164;
+    const T_OPEN_CURLY_BRACE    = 165;
+    const T_CLOSE_CURLY_BRACE   = 166;
 
     /**
      * Creates a new query scanner object.
@@ -151,7 +151,7 @@ class Lexer extends \Doctrine\Common\Lexer
             $value = $newVal;
 
             return (strpos($value, '.') !== false || stripos($value, 'e') !== false) 
-                ? self::T_FLOAT : self::T_INTEGER;
+                    ? self::T_FLOAT : self::T_INTEGER;
         }
         
         if ($value[0] === "'") {
@@ -176,6 +176,8 @@ class Lexer extends \Doctrine\Common\Lexer
                 case '*': return self::T_MULTIPLY;
                 case '/': return self::T_DIVIDE;
                 case '!': return self::T_NEGATE;
+                case '{': return self::T_OPEN_CURLY_BRACE;
+                case '}': return self::T_CLOSE_CURLY_BRACE;
                 default:
                     // Do nothing
                     break;
@@ -186,7 +188,7 @@ class Lexer extends \Doctrine\Common\Lexer
     }
 
     /**
-     * @todo Doc
+     * @todo Inline this method.
      */
     private function _getNumeric($value)
     {
@@ -206,6 +208,7 @@ class Lexer extends \Doctrine\Common\Lexer
      *
      * @param string $identifier identifier name
      * @return int token type
+     * @todo Inline this method.
      */
     private function _checkLiteral($identifier)
     {

lib/Doctrine/ORM/Query/QueryException.php

@@ -85,6 +85,15 @@ class QueryException extends \Doctrine\Common\DoctrineException
             "in class ".$assoc->sourceEntityName." assocation ".$assoc->sourceFieldName
         );
     }
+    
+    public static function partialObjectsAreDangerous()
+    {
+        return new self(
+            "Loading partial objects is dangerous. Fetch full objects or consider " .
+            "using a different fetch mode. If you really want partial objects, " .
+            "set the doctrine.forcePartialLoad query hint to TRUE."
+        );
+    }
 
     public static function overwritingJoinConditionsNotYetSupported($assoc)
     {
@@ -94,4 +103,21 @@ class QueryException extends \Doctrine\Common\DoctrineException
             "Use WITH to append additional join conditions to the association."
         );
     }
+    
+    public static function associationPathInverseSideNotSupported()
+    {
+        return new self(
+            "A single-valued association path expression to an inverse side is not supported".
+            " in DQL queries. Use an explicit join instead."
+        );
+    }
+    
+    public static function associationPathCompositeKeyNotSupported()
+    {
+        return new self(
+            "A single-valued association path expression to an entity with a composite primary ".
+            "key is not supported. Explicitly name the components of the composite primary key ".
+            "in the query."
+        );
+    }
 }
\ No newline at end of file

lib/Doctrine/ORM/UnitOfWork.php

@@ -317,7 +317,7 @@ class UnitOfWork implements PropertyChangedListener
         } catch (\Exception $e) {
             $conn->setRollbackOnly();
             $conn->rollback();
-            $this->clear();
+            $this->_em->close();
             throw $e;
         }
 

tests/Doctrine/Tests/Models/CMS/CmsUser.php

@@ -116,5 +116,4 @@ class CmsUser
             $address->setUser($this);
         }
     }
-
 }

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

@@ -286,6 +286,7 @@ class BasicFunctionalTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->assertEquals('gblanco', $users[0]->username);
         $this->assertEquals('developer', $users[0]->status);
         $this->assertTrue($users[0]->phonenumbers instanceof \Doctrine\ORM\PersistentCollection);
+        $this->assertTrue($users[0]->phonenumbers->isInitialized());
         $this->assertEquals(0, $users[0]->phonenumbers->count());
         //$this->assertNull($users[0]->articles);
     }
@@ -332,7 +333,7 @@ class BasicFunctionalTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $query = $this->_em->createQuery("select u, g from Doctrine\Tests\Models\CMS\CmsUser u inner join u.groups g");
+        $query = $this->_em->createQuery("select u, g from Doctrine\Tests\Models\CMS\CmsUser u join u.groups g");
         $this->assertEquals(0, count($query->getResult()));
     }
     

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

@@ -4,6 +4,7 @@ namespace Doctrine\Tests\ORM\Functional;
 
 use Doctrine\Tests\Models\CMS\CmsUser;
 use Doctrine\Tests\Models\CMS\CmsPhonenumber;
+use Doctrine\Tests\Models\CMS\CmsAddress;
 use Doctrine\ORM\UnitOfWork;
 
 require_once __DIR__ . '/../../TestInit.php';
@@ -83,7 +84,6 @@ class DetachedEntityTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $phonenumbers = $user->getPhonenumbers();
         $this->assertTrue($this->_em->contains($phonenumbers[0]));
         $this->assertTrue($this->_em->contains($phonenumbers[1]));
-    }
-
+    }    
 }
 

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

@@ -189,8 +189,7 @@ class QueryDqlFunctionTest extends \Doctrine\Tests\OrmFunctionalTestCase
                " TRIM(LEADING '.' FROM m.name) AS str2, TRIM(CONCAT(' ', CONCAT(m.name, ' '))) AS str3 ".
                "FROM Doctrine\Tests\Models\Company\CompanyManager m";
 
-        $result = $this->_em->createQuery($dql)
-                         ->getArrayResult();
+        $result = $this->_em->createQuery($dql)->getArrayResult();
 
         $this->assertEquals(4, count($result));
         $this->assertEquals('Roman B', $result[0]['str1']);
@@ -207,34 +206,34 @@ class QueryDqlFunctionTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->assertEquals('Jonathan W.', $result[3]['str3']);
     }
 
-    /*public function testOperatorAdd()
+    public function testOperatorAdd()
     {
         $result = $this->_em->createQuery('SELECT m, m.salary+2500 AS add FROM Doctrine\Tests\Models\Company\CompanyManager m')
-                         ->getResult();
-
+                ->getResult();
+        
         $this->assertEquals(4, count($result));
-        $this->assertEquals(102500, $result[0]['op']);
-        $this->assertEquals(202500, $result[1]['op']);
-        $this->assertEquals(402500, $result[2]['op']);
-        $this->assertEquals(802500, $result[3]['op']);
+        $this->assertEquals(102500, $result[0]['add']);
+        $this->assertEquals(202500, $result[1]['add']);
+        $this->assertEquals(402500, $result[2]['add']);
+        $this->assertEquals(802500, $result[3]['add']);
     }
 
     public function testOperatorSub()
     {
-        $result = $this->_em->createQuery('SELECT m, m.salary-2500 AS add FROM Doctrine\Tests\Models\Company\CompanyManager m')
-                         ->getResult();
+        $result = $this->_em->createQuery('SELECT m, m.salary-2500 AS sub FROM Doctrine\Tests\Models\Company\CompanyManager m')
+                ->getResult();
 
         $this->assertEquals(4, count($result));
-        $this->assertEquals(102500, $result[0]['op']);
-        $this->assertEquals(202500, $result[1]['op']);
-        $this->assertEquals(402500, $result[2]['op']);
-        $this->assertEquals(802500, $result[3]['op']);
+        $this->assertEquals(97500, $result[0]['sub']);
+        $this->assertEquals(197500, $result[1]['sub']);
+        $this->assertEquals(397500, $result[2]['sub']);
+        $this->assertEquals(797500, $result[3]['sub']);
     }
 
     public function testOperatorMultiply()
     {
         $result = $this->_em->createQuery('SELECT m, m.salary*2 AS op FROM Doctrine\Tests\Models\Company\CompanyManager m')
-                         ->getResult();
+                ->getResult();
 
         $this->assertEquals(4, count($result));
         $this->assertEquals(200000, $result[0]['op']);
@@ -243,17 +242,33 @@ class QueryDqlFunctionTest extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->assertEquals(1600000, $result[3]['op']);
     }
 
+    /**
+     * @group test
+     */
     public function testOperatorDiv()
     {
         $result = $this->_em->createQuery('SELECT m, (m.salary/0.5) AS op FROM Doctrine\Tests\Models\Company\CompanyManager m')
-                         ->getResult();
+                ->getResult();
 
         $this->assertEquals(4, count($result));
         $this->assertEquals(200000, $result[0]['op']);
         $this->assertEquals(400000, $result[1]['op']);
         $this->assertEquals(800000, $result[2]['op']);
         $this->assertEquals(1600000, $result[3]['op']);
-    }*/
+    }
+    
+    public function testConcatFunction()
+    {
+        $arg = $this->_em->createQuery('SELECT CONCAT(m.name, m.department) AS namedep FROM Doctrine\Tests\Models\Company\CompanyManager m order by namedep desc')
+                ->getArrayResult();
+
+        $this->assertEquals(4, count($arg));
+        $this->assertEquals('Roman B.IT', $arg[0]['namedep']);
+        $this->assertEquals('Jonathan W.Administration', $arg[1]['namedep']);
+        $this->assertEquals('Guilherme B.Complaint Department', $arg[2]['namedep']);
+        $this->assertEquals('Benjamin E.HR', $arg[3]['namedep']);
+    }
+    
 
     protected function generateFixture()
     {

tests/Doctrine/Tests/ORM/Functional/Ticket/DDC163Test.php

@@ -45,7 +45,7 @@ class DDC163Test extends \Doctrine\Tests\OrmFunctionalTestCase
         $this->_em->flush();
         $this->_em->clear();
 
-        $dql = 'SELECT person.name, spouse.name, friend.name
+        $dql = 'SELECT PARTIAL person.{id,name}, PARTIAL spouse.{id,name}, PARTIAL friend.{id,name}
             FROM  Doctrine\Tests\Models\Company\CompanyPerson person
             LEFT JOIN person.spouse spouse
             LEFT JOIN person.friends friend

tests/Doctrine/Tests/ORM/Hydration/ArrayHydratorTest.php

@@ -626,6 +626,76 @@ class ArrayHydratorTest extends HydrationTestCase
         $this->assertTrue(isset($result[1]['boards']));
         $this->assertEquals(1, count($result[1]['boards']));
     }
+    
+    /**
+     * DQL: select partial u.{id,status}, a.id, a.topic, c.id as cid, c.topic as ctopic from CmsUser u left join u.articles a left join a.comments c
+     * 
+     */
+    /*public function testChainedJoinWithScalars()
+    {
+        $rsm = new ResultSetMapping;
+        $rsm->addEntityResult('Doctrine\Tests\Models\CMS\CmsUser', 'u');
+        $rsm->addFieldResult('u', 'u__id', 'id');
+        $rsm->addFieldResult('u', 'u__status', 'status');
+        $rsm->addScalarResult('a__id', 'id');
+        $rsm->addScalarResult('a__topic', 'topic');
+        $rsm->addScalarResult('c__id', 'cid');
+        $rsm->addScalarResult('c__topic', 'ctopic');
+
+        // Faked result set
+        $resultSet = array(
+            //row1
+            array(
+                'u__id' => '1',
+                'u__status' => 'developer',
+                'a__id' => '1',
+                'a__topic' => 'The First',
+                'c__id' => '1',
+                'c__topic' => 'First Comment'
+                ),
+            array(
+                'u__id' => '1',
+                'u__status' => 'developer',
+                'a__id' => '1',
+                'a__topic' => 'The First',
+                'c__id' => '2',
+                'c__topic' => 'Second Comment'
+                ),
+           array(
+                'u__id' => '1',
+                'u__status' => 'developer',
+                'a__id' => '42',
+                'a__topic' => 'The Answer',
+                'c__id' => null,
+                'c__topic' => null
+                ),
+            );
+
+        $stmt = new HydratorMockStatement($resultSet);
+        $hydrator = new \Doctrine\ORM\Internal\Hydration\ArrayHydrator($this->_em);
+
+        $result = $hydrator->hydrateAll($stmt, $rsm);
+        
+        $this->assertEquals(3, count($result));
+        
+        $this->assertEquals(2, count($result[0][0])); // User array
+        $this->assertEquals(1, $result[0]['id']);
+        $this->assertEquals('The First', $result[0]['topic']);
+        $this->assertEquals(1, $result[0]['cid']);
+        $this->assertEquals('First Comment', $result[0]['ctopic']);
+        
+        $this->assertEquals(2, count($result[1][0])); // User array, duplicated
+        $this->assertEquals(1, $result[1]['id']); // duplicated
+        $this->assertEquals('The First', $result[1]['topic']); // duplicated
+        $this->assertEquals(2, $result[1]['cid']);
+        $this->assertEquals('Second Comment', $result[1]['ctopic']);
+        
+        $this->assertEquals(2, count($result[2][0])); // User array, duplicated
+        $this->assertEquals(42, $result[2]['id']);
+        $this->assertEquals('The Answer', $result[2]['topic']);
+        $this->assertNull($result[2]['cid']);
+        $this->assertNull($result[2]['ctopic']);
+    }*/
 
     public function testResultIteration()
     {

tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php

@@ -743,6 +743,81 @@ class ObjectHydratorTest extends HydrationTestCase
         $this->assertEquals(0, $result[0]->articles->count());
         $this->assertEquals(0, $result[1]->articles->count());
     }
+    
+    /**
+     * DQL: select partial u.{id,status}, a.id, a.topic, c.id as cid, c.topic as ctopic from CmsUser u left join u.articles a left join a.comments c
+     * 
+     * @group bubu
+     */
+    /*public function testChainedJoinWithScalars()
+    {
+        $rsm = new ResultSetMapping;
+        $rsm->addEntityResult('Doctrine\Tests\Models\CMS\CmsUser', 'u');
+        $rsm->addFieldResult('u', 'u__id', 'id');
+        $rsm->addFieldResult('u', 'u__status', 'status');
+        $rsm->addScalarResult('a__id', 'id');
+        $rsm->addScalarResult('a__topic', 'topic');
+        $rsm->addScalarResult('c__id', 'cid');
+        $rsm->addScalarResult('c__topic', 'ctopic');
+
+        // Faked result set
+        $resultSet = array(
+            //row1
+            array(
+                'u__id' => '1',
+                'u__status' => 'developer',
+                'a__id' => '1',
+                'a__topic' => 'The First',
+                'c__id' => '1',
+                'c__topic' => 'First Comment'
+                ),
+            array(
+                'u__id' => '1',
+                'u__status' => 'developer',
+                'a__id' => '1',
+                'a__topic' => 'The First',
+                'c__id' => '2',
+                'c__topic' => 'Second Comment'
+                ),
+           array(
+                'u__id' => '1',
+                'u__status' => 'developer',
+                'a__id' => '42',
+                'a__topic' => 'The Answer',
+                'c__id' => null,
+                'c__topic' => null
+                ),
+            );
+
+        $stmt = new HydratorMockStatement($resultSet);
+        $hydrator = new \Doctrine\ORM\Internal\Hydration\ObjectHydrator($this->_em);
+
+        $result = $hydrator->hydrateAll($stmt, $rsm, array(Query::HINT_FORCE_PARTIAL_LOAD => true));
+
+        $this->assertEquals(3, count($result));
+        
+        $this->assertTrue($result[0][0] instanceof CmsUser); // User object
+        $this->assertEquals(1, $result[0]['id']);
+        $this->assertEquals('The First', $result[0]['topic']);
+        $this->assertEquals(1, $result[0]['cid']);
+        $this->assertEquals('First Comment', $result[0]['ctopic']);
+        
+        $this->assertTrue($result[1][0] instanceof CmsUser); // Same User object
+        $this->assertEquals(1, $result[1]['id']); // duplicated
+        $this->assertEquals('The First', $result[1]['topic']); // duplicated
+        $this->assertEquals(2, $result[1]['cid']);
+        $this->assertEquals('Second Comment', $result[1]['ctopic']);
+        
+        $this->assertTrue($result[2][0] instanceof CmsUser); // Same User object
+        $this->assertEquals(42, $result[2]['id']);
+        $this->assertEquals('The Answer', $result[2]['topic']);
+        $this->assertNull($result[2]['cid']);
+        $this->assertNull($result[2]['ctopic']);
+        
+        $this->assertTrue($result[0][0] === $result[1][0]);
+        $this->assertTrue($result[1][0] === $result[2][0]);
+        $this->assertTrue($result[0][0] === $result[2][0]);
+    }*/
 
     public function testResultIteration()
     {

tests/Doctrine/Tests/ORM/Query/LanguageRecognitionTest.php

@@ -215,9 +215,9 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
         $this->assertValidDql('SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.id = :id');
     }
 
-    public function testJoinConditionsSupported()
+    public function testJoinConditionOverrideNotSupported()
     {
-        $this->assertValidDql("SELECT u.name, p FROM Doctrine\Tests\Models\CMS\CmsUser u LEFT JOIN u.phonenumbers p ON p.phonenumber = '123 123'");
+        $this->assertInvalidDql("SELECT u.name, p FROM Doctrine\Tests\Models\CMS\CmsUser u LEFT JOIN u.phonenumbers p ON p.phonenumber = '123 123'");
     }
 
     public function testIndexByClauseWithOneComponent()
@@ -270,12 +270,12 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
         $this->assertInvalidDql("SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u INNER JOIN u.articles u WHERE u.id = 1");
     }
 
-    /*public function testImplicitJoinInWhereOnSingleValuedAssociationPathExpression()
+    public function testImplicitJoinInWhereOnSingleValuedAssociationPathExpression()
     {
         // This should be allowed because avatar is a single-value association.
         // SQL: SELECT ... FROM forum_user fu INNER JOIN forum_avatar fa ON fu.avatar_id = fa.id WHERE fa.id = ?
-        $this->assertValidDql("SELECT u FROM Doctrine\Tests\Models\Forum\ForumUser u WHERE u.avatar.id = ?");
-    }*/
+        $this->assertValidDql("SELECT u FROM Doctrine\Tests\Models\Forum\ForumUser u WHERE u.avatar.id = ?1");
+    }
 
     public function testImplicitJoinInWhereOnCollectionValuedPathExpression()
     {
@@ -319,10 +319,6 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
     }
 
     /**
-     * TODO: Hydration can't deal with this currently but it should be allowed.
-     *       Also, generated SQL looks like: "... FROM cms_user, cms_article ..." which
-     *       may not work on all dbms.
-     *
      * The main use case for this generalized style of join is when a join condition
      * does not involve a foreign key relationship that is mapped to an entity relationship.
      */
@@ -392,15 +388,30 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
         $this->assertInvalidDql('SELECT u FROM UnknownClassName u');
     }
     
-    /**
-     * This checks for invalid attempt to hydrate a proxy. It should throw an exception
-     *
-     * @expectedException \Doctrine\Common\DoctrineException
-     */
-    public function testPartialObjectLoad()
+    public function testCorrectPartialObjectLoad()
+    {
+        $this->assertValidDql('SELECT PARTIAL u.{id,name} FROM Doctrine\Tests\Models\CMS\CmsUser u');
+    }
+    
+    public function testIncorrectPartialObjectLoadBecauseOfMissingIdentifier()
+    {
+        $this->assertInvalidDql('SELECT PARTIAL u.{name} FROM Doctrine\Tests\Models\CMS\CmsUser u');
+    }
+    
+    public function testScalarExpressionInSelect()
+    {
+        $this->assertValidDql('SELECT u, 42 + u.id AS someNumber FROM Doctrine\Tests\Models\CMS\CmsUser u');
+    }
+    
+    public function testInputParameterInSelect()
+    {
+        $this->assertValidDql('SELECT u, u.id + ?1 AS someNumber FROM Doctrine\Tests\Models\CMS\CmsUser u');
+    }
+
+    /* The exception is currently thrown in the SQLWalker, not earlier.
+    public function testInverseSideSingleValuedAssociationPathNotAllowed()
     {
-        $this->parseDql('SELECT u.name FROM Doctrine\Tests\Models\CMS\CmsUser u', array(
-        	\Doctrine\ORM\Query::HINT_FORCE_PARTIAL_LOAD => false
-        ));
+        $this->assertInvalidDql('SELECT u.id FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.address = ?1');
     }
+    */
 }
\ No newline at end of file

tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php

@@ -23,7 +23,7 @@ class SelectSqlGenerationTest extends \Doctrine\Tests\OrmTestCase
             $query->setHint(Query::HINT_FORCE_PARTIAL_LOAD, true);
             parent::assertEquals($sqlToBeConfirmed, $query->getSql());
             $query->free();
-        } catch (DoctrineException $e) {
+        } catch (\Exception $e) {
             $this->fail($e->getMessage());
         }
     }
@@ -534,4 +534,24 @@ class SelectSqlGenerationTest extends \Doctrine\Tests\OrmTestCase
             "SELECT c0_.id AS id0, c0_.status AS status1, c0_.username AS username2, c0_.name AS name3 FROM cms_users c0_ WHERE EXISTS (SELECT 1 FROM cms_addresses c1_ WHERE c1_.user_id = c0_.id AND c1_.id = ?)"
         );*/
     }
+    
+
+    public function testSingleValuedAssociationNullCheckOnOwningSide()
+    {
+        $this->assertSqlGeneration(
+            "SELECT a FROM Doctrine\Tests\Models\CMS\CmsAddress a WHERE a.user IS NULL",
+            "SELECT c0_.id AS id0, c0_.country AS country1, c0_.zip AS zip2, c0_.city AS city3 FROM cms_addresses c0_ WHERE c0_.user_id IS NULL"
+        );
+    }
+
+    // Null check on inverse side has to happen through explicit JOIN.
+    // "SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u WHERE u.address IS NULL"
+    // where the CmsUser is the inverse side is not supported.
+    public function testSingleValuedAssociationNullCheckOnInverseSide()
+    {
+        $this->assertSqlGeneration(
+            "SELECT u FROM Doctrine\Tests\Models\CMS\CmsUser u LEFT JOIN u.address a WHERE a.id IS NULL",
+            "SELECT c0_.id AS id0, c0_.status AS status1, c0_.username AS username2, c0_.name AS name3 FROM cms_users c0_ LEFT JOIN cms_addresses c1_ ON c0_.id = c1_.user_id WHERE c1_.id IS NULL"
+        );
+    }
 }