[DBAL-204] Remove foreign keys pointing to removed namespace schema tables.

lib/Doctrine/DBAL/Schema/Table.php

@@ -465,6 +465,16 @@ class Table extends AbstractAsset
         return $this->_fkConstraints[$constraintName];
     }
 
+    public function removeForeignKey($constraintName)
+    {
+        $constraintName = strtolower($constraintName);
+        if(!$this->hasForeignKey($constraintName)) {
+            throw SchemaException::foreignKeyDoesNotExist($constraintName, $this->_name);
+        }
+
+        unset($this->_fkConstraints[$constraintName]);
+    }
+
     /**
      * @return Column[]
      */

lib/Doctrine/DBAL/Schema/Visitor/RemoveNamespacedAssets.php

@@ -89,6 +89,10 @@ class RemoveNamespacedAssets implements Visitor
      */
     public function acceptForeignKey(Table $localTable, ForeignKeyConstraint $fkConstraint)
     {
+        $foreignTable = $this->schema->getTable($fkConstraint->getForeignTableName());
+        if ( ! $foreignTable->isInDefaultNamespace($this->schema->getName()) ) {
+            $localTable->removeForeignKey($fkConstraint->getName());
+        }
     }
 
     /**

tests/Doctrine/Tests/DBAL/Schema/Visitor/RemoveNamespacedAssetsTest.php

@@ -5,6 +5,7 @@ namespace Doctrine\Tests\DBAL\Schema\Visitor;
 use Doctrine\DBAL\Schema\Schema;
 use Doctrine\DBAL\Schema\SchemaConfig;
 use Doctrine\DBAL\Schema\Visitor\RemoveNamespacedAssets;
+use Doctrine\DBAL\Platforms\MySqlPlatform;
 
 class RemoveNamespacedAssetsTest extends \PHPUnit_Framework_TestCase
 {
@@ -26,4 +27,28 @@ class RemoveNamespacedAssetsTest extends \PHPUnit_Framework_TestCase
         $tables = $schema->getTables();
         $this->assertEquals(array("test.test", "test.baz"), array_keys($tables), "Only 2 tables should be present, both in 'test' namespace.");
     }
+
+    /**
+     * @group DBAL-204
+     */
+    public function testCleanupForeignKeys()
+    {
+        $config = new SchemaConfig;
+        $config->setName("test");
+        $schema = new Schema(array(), array(), $config);
+
+        $testTable = $schema->createTable("test.test");
+        $testTable->addColumn('id', 'integer');
+
+        $fooTable = $schema->createTable("foo.bar");
+        $fooTable->addColumn('id', 'integer');
+
+        $testTable->addForeignKeyConstraint("foo.bar", array("id"), array("id"));
+
+        $schema->visit(new RemoveNamespacedAssets());
+
+        $sql = $schema->toSql(new MySqlPlatform());
+        $this->assertEquals(1, count($sql), "Just one CREATE TABLE statement, no foreign key and table to foo.bar");
+    }
 }
+