DDC-1385 - Add INDEX BY scalar variables on the top-level

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

@@ -66,12 +66,12 @@ class ArrayHydrator extends AbstractHydrator
     }
 
     /** @override */
-    protected function _hydrateRow(array $data, array &$cache, array &$result)
+    protected function _hydrateRow(array $row, array &$cache, array &$result)
     {
         // 1) Initialize
         $id = $this->_idTemplate; // initialize the id-memory
         $nonemptyComponents = array();
-        $rowData = $this->_gatherRowData($data, $cache, $id, $nonemptyComponents);
+        $rowData = $this->_gatherRowData($row, $cache, $id, $nonemptyComponents);
 
         // Extract scalar values. They're appended at the end.
         if (isset($rowData['scalars'])) {
@@ -128,8 +128,7 @@ class ArrayHydrator extends AbstractHydrator
                         if ( ! $indexExists || ! $indexIsValid) {
                             $element = $data;
                             if (isset($this->_rsm->indexByMap[$dqlAlias])) {
-                                $field = $this->_rsm->indexByMap[$dqlAlias];
+                                $baseElement[$relationAlias][$row[$this->_rsm->indexByMap[$dqlAlias]]] = $element;
-                                $baseElement[$relationAlias][$element[$field]] = $element;
                             } else {
                                 $baseElement[$relationAlias][] = $element;
                             }
@@ -167,6 +166,7 @@ class ArrayHydrator extends AbstractHydrator
                     } else {
                         $result[] = null;
                     }
+                    $resultKey = $this->_resultCounter;
                     ++$this->_resultCounter;
                     continue;
                 }
@@ -179,8 +179,7 @@ class ArrayHydrator extends AbstractHydrator
                     }
 
                     if (isset($this->_rsm->indexByMap[$dqlAlias])) {
-                        $field = $this->_rsm->indexByMap[$dqlAlias];
+                        $resultKey = $row[$this->_rsm->indexByMap[$dqlAlias]];
-                        $resultKey = $rowData[$dqlAlias][$field];
                         $result[$resultKey] = $element;
                     } else {
                         $resultKey = $this->_resultCounter;
@@ -204,8 +203,13 @@ class ArrayHydrator extends AbstractHydrator
         // Append scalar values to mixed result sets
         if (isset($scalars)) {
             if ( ! isset($resultKey) ) {
+                // this only ever happens when no object is fetched (scalar result only)
+                if (isset($this->_rsm->indexByMap['scalars'])) {
+                    $resultKey = $row[$this->_rsm->indexByMap['scalars']];
+                } else {
                     $resultKey = $this->_resultCounter - 1;
                 }
+            }
 
             foreach ($scalars as $name => $value) {
                 $result[$resultKey][$name] = $value;

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

@@ -273,13 +273,13 @@ class ObjectHydrator extends AbstractHydrator
      * @param array $cache The cache to use.
      * @param array $result The result array to fill.
      */
-    protected function _hydrateRow(array $data, array &$cache, array &$result)
+    protected function _hydrateRow(array $row, array &$cache, array &$result)
     {
         // Initialize
         $id = $this->_idTemplate; // initialize the id-memory
         $nonemptyComponents = array();
         // Split the row data into chunks of class data.
-        $rowData = $this->_gatherRowData($data, $cache, $id, $nonemptyComponents);
+        $rowData = $this->_gatherRowData($row, $cache, $id, $nonemptyComponents);
 
         // Extract scalar values. They're appended at the end.
         if (isset($rowData['scalars'])) {
@@ -352,8 +352,7 @@ class ObjectHydrator extends AbstractHydrator
                                 $element = $this->_getEntity($data, $dqlAlias);
 
                                 if (isset($this->_rsm->indexByMap[$dqlAlias])) {
-                                    $field = $this->_rsm->indexByMap[$dqlAlias];
+                                    $indexValue = $row[$this->_rsm->indexByMap[$dqlAlias]];
-                                    $indexValue = $this->_ce[$entityName]->reflFields[$field]->getValue($element);
                                     $reflFieldValue->hydrateSet($indexValue, $element);
                                     $this->_identifierMap[$path][$id[$parentAlias]][$id[$dqlAlias]] = $indexValue;
                                 } else {
@@ -421,6 +420,7 @@ class ObjectHydrator extends AbstractHydrator
                     } else {
                         $result[] = null;
                     }
+                    $resultKey = $this->_resultCounter;
                     ++$this->_resultCounter;
                     continue;
                 }
@@ -433,8 +433,7 @@ class ObjectHydrator extends AbstractHydrator
                     }
 
                     if (isset($this->_rsm->indexByMap[$dqlAlias])) {
-                        $field = $this->_rsm->indexByMap[$dqlAlias];
+                        $resultKey = $row[$this->_rsm->indexByMap[$dqlAlias]];
-                        $resultKey = $rowData[$dqlAlias][$field];
 
                         if (isset($this->_hints['collection'])) {
                             $this->_hints['collection']->hydrateSet($resultKey, $element);
@@ -473,8 +472,12 @@ class ObjectHydrator extends AbstractHydrator
         // Append scalar values to mixed result sets
         if (isset($scalars)) {
             if ( ! isset($resultKey) ) {
+                if (isset($this->_rsm->indexByMap['scalars'])) {
+                    $resultKey = $row[$this->_rsm->indexByMap['scalars']];
+                } else {
                     $resultKey = $this->_resultCounter - 1;
                 }
+            }
 
             foreach ($scalars as $name => $value) {
                 $result[$resultKey][$name] = $value;

lib/Doctrine/ORM/Query/ResultSetMapping.php

@@ -157,7 +157,41 @@ class ResultSetMapping
      */
     public function addIndexBy($alias, $fieldName)
     {
-        $this->indexByMap[$alias] = $fieldName;
+        $found = false;
+        foreach ($this->fieldMappings AS $columnName => $columnFieldName) {
+            if ($columnFieldName === $fieldName && $this->columnOwnerMap[$columnName] == $alias) {
+                $this->addIndexByColumn($alias, $columnName);
+                $found = true;
+                break;
+            }
+        }
+        if (!$found) {
+            throw new \LogicException("Cannot add index by for dql alias " . $alias . " and field " .
+                                      $fieldName . " without calling addFieldResult() for them before.");
+        }
+    }
+
+    /**
+     * Set to index by a scalar result column name
+     *
+     * @param $resultColumnName
+     * @return void
+     */
+    public function addIndexByScalar($resultColumnName)
+    {
+        $this->indexByMap['scalars'] = $resultColumnName;
+    }
+
+    /**
+     * Sets a column to use for indexing an entity or joined entity result by the given alias name.
+     *
+     * @param $alias
+     * @param $resultColumnName
+     * @return void
+     */
+    public function addIndexByColumn($alias, $resultColumnName)
+    {
+        $this->indexByMap[$alias] = $resultColumnName;
     }
 
     /**

lib/Doctrine/ORM/Query/SqlWalker.php

@@ -71,6 +71,13 @@ class SqlWalker implements TreeWalker
     /** Map from result variable names to their SQL column alias names. */
     private $_scalarResultAliasMap = array();
 
+    /**
+     * Map from DQL-Alias + Field-Name to SQL Column Alias
+     *
+     * @var array
+     */
+    private $_scalarFields = array();
+
     /** Map of all components/classes that appear in the DQL query. */
     private $_queryComponents;
 
@@ -381,7 +388,7 @@ class SqlWalker implements TreeWalker
             } else if ($lockMode == LockMode::OPTIMISTIC) {
                 foreach ($this->_selectedClasses AS $class) {
                     if ( ! $class->isVersioned) {
-                        throw \Doctrine\ORM\OptimisticLockException::lockFailed();
+                        throw \Doctrine\ORM\OptimisticLockException::lockFailed($class->name);
                     }
                 }
             }
@@ -619,11 +626,18 @@ class SqlWalker implements TreeWalker
             }
 
             if ($identificationVariableDecl->indexBy) {
+                $alias = $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->identificationVariable;
+                $field = $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->field;
+
+                if (isset($this->_scalarFields[$alias][$field])) {
+                    $this->_rsm->addIndexByScalar($this->_scalarFields[$alias][$field]);
+                } else {
                     $this->_rsm->addIndexBy(
                         $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->identificationVariable,
                         $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->field
                     );
                 }
+            }
 
             $sqlParts[] = $this->_platform->appendLockHint($sql, $this->_query->getHint(Query::HINT_LOCK_MODE));
         }
@@ -1010,6 +1024,7 @@ class SqlWalker implements TreeWalker
             
             if ( ! $hidden) {
                 $this->_rsm->addScalarResult($columnAlias, $resultAlias);
+                $this->_scalarFields[$dqlAlias][$fieldName] = $columnAlias;
             }
         } else if ($expr instanceof AST\AggregateExpression) {
             if ( ! $selectExpression->fieldIdentificationVariable) {

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

@@ -1208,4 +1208,32 @@ class ObjectHydratorTest extends HydrationTestCase
         $this->assertTrue(isset($result[2]));
         $this->assertEquals(2, $result[2][0]->id);
     }
+
+    /**
+     * @group DDC-1385
+     */
+    public function testIndexByScalarsOnly()
+    {
+        $rsm = new ResultSetMapping;
+        $rsm->addScalarResult('sclr0', 'nameUpper');
+        $rsm->addIndexByScalar('sclr0');
+
+                // Faked result set
+        $resultSet = array(
+            //row1
+            array(
+                'sclr0' => 'ROMANB',
+                ),
+            array(
+                'sclr0' => 'JWAGE',
+                ),
+            );
+
+        $stmt = new HydratorMockStatement($resultSet);
+        $hydrator = new \Doctrine\ORM\Internal\Hydration\ObjectHydrator($this->_em);
+
+        $result = $hydrator->hydrateAll($stmt, $rsm, array(Query::HINT_FORCE_PARTIAL_LOAD => true));
+
+        $this->assertEquals(array('ROMANB' => array('nameUpper' => 'ROMANB'), 'JWAGE' => array('nameUpper' => 'JWAGE')), $result);
+    }
 }