fix some an infinite recursion when deleting records that reference each other with ownsOne

lib/Doctrine/Connection/UnitOfWork.php

@@ -221,8 +221,12 @@ class Doctrine_Connection_UnitOfWork extends Doctrine_Connection_Module
         $event = new Doctrine_Event($this, Doctrine_Event::RECORD_DELETE);
 
         $record->preDelete($event);
+        
+        $record->state(Doctrine_Record::STATE_LOCKED);
 
         $this->deleteComposites($record);
+        
+        $record->state(Doctrine_Record::STATE_TDIRTY);
 
         if ( ! $event->skipOperation) {
             $this->conn->transaction->addDelete($record);
@@ -329,7 +333,12 @@ class Doctrine_Connection_UnitOfWork extends Doctrine_Connection_Module
                 case Doctrine_Relation::ONE_COMPOSITE:
                 case Doctrine_Relation::MANY_COMPOSITE:
                     $obj = $record->get($fk->getAlias());
-                    $obj->delete($this->conn);
+                    if ( $obj instanceof Doctrine_Record && 
+                           $obj->state() != Doctrine_Record::STATE_LOCKED)  {
+                            
+                            $obj->delete($this->conn);
+                           	
+                    }
                     break;
             }
         }

lib/Doctrine/Record.php

@@ -65,10 +65,10 @@ abstract class Doctrine_Record extends Doctrine_Record_Abstract implements Count
      */
     const STATE_TCLEAN      = 5;
     /**
-     * DELETED STATE
-     * a Doctrine_Record turns into deleted state when it is deleted
+     * LOCKED STATE
+     * a Doctrine_Record is temporarily locked during deletes
      */
-    const STATE_DELETED     = 6;
+    const STATE_LOCKED     = 6;
     /**
      * @var object Doctrine_Table $_table   the factory that created this data access object
      */

tests/Record/LockTestCase.php

+<?php
+
+class Doctrine_Record_Lock_TestCase extends Doctrine_UnitTestCase {
+    public function prepareTables() 
+    {
+        $this->tables[] = 'rec1';
+        $this->tables[] = 'rec2';
+        parent::prepareTables();
+    }    	
+        
+    public function prepareData() { }
+    
+    public function testDeleteRecords()
+    {
+    	$rec1 = new Rec1();
+        $rec1->first_name = 'Some name';
+        $rec1->Account = new Rec2();
+        $rec1->Account->address = 'Some address';
+        $rec1->save();
+        
+        $rec1->delete();
+        $this->pass();
+    }
+}
+
+class Rec1 extends Doctrine_Record
+{
+    public function setTableDefinition()
+    {
+        $this->hasColumn('first_name', 'string', 128, array ());
+    }
+
+    public function setUp()
+    {
+        $this->ownsOne('Rec2 as Account', array('local' => 'id', 'foreign' => 'user_id'));
+    }
+}
+
+class Rec2  extends Doctrine_Record
+{
+    public function setTableDefinition()
+    {
+        $this->hasColumn('user_id', 'integer', 10, array (  'unique' => true,));
+        $this->hasColumn('address', 'string', 150, array ());
+    }
+
+    public function setUp()
+    {
+        $this->ownsOne('Rec1 as User', 'Rec2.user_id');
+    }
+
+}

tests/run.php

@@ -280,7 +280,8 @@ $test->addTestCase(new Doctrine_NewCore_TestCase());
 
 $test->addTestCase(new Doctrine_Record_State_TestCase());
 
-
+// This test used to segfault php because of infinite recursion in Connection/UnitOfWork
+$test->addTestCase(new Doctrine_Record_Lock_TestCase());
 
 $test->addTestCase(new Doctrine_Tokenizer_TestCase());