[2.0] DDC-327 - Always Deep Clone all Schema Assets

lib/Doctrine/DBAL/Schema/Schema.php

@@ -309,4 +309,19 @@ class Schema extends AbstractAsset
             $sequence->visit($visitor);
         }
     }
+
+    /**
+     * Cloning a Schema triggers a deep clone of all related assets.
+     *
+     * @return void
+     */
+    public function __clone()
+    {
+        foreach ($this->_tables AS $k => $table) {
+            $this->_tables[$k] = clone $table;
+        }
+        foreach ($this->_sequences AS $k => $sequence) {
+            $this->_sequences[$k] = clone $sequence;
+        }
+    }
 }

lib/Doctrine/DBAL/Schema/Table.php

@@ -620,4 +620,21 @@ class Table extends AbstractAsset
             $visitor->acceptForeignKey($this, $constraint);
         }
     }
+
+    /**
+     * Clone of a Table triggers a deep clone of all affected assets
+     */
+    public function __clone()
+    {
+        foreach ($this->_columns AS $k => $column) {
+            $this->_columns[$k] = clone $column;
+        }
+        foreach ($this->_indexes AS $k => $index) {
+            $this->_indexes[$k] = clone $index;
+        }
+        foreach ($this->_fkConstraints AS $k => $fk) {
+            $this->_fkConstraints[$k] = clone $fk;
+            $this->_fkConstraints[$k]->setLocalTable($this);
+        }
+    }
 }
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tests/Doctrine/Tests/DBAL/Schema/SchemaTest.php

@@ -212,4 +212,31 @@ class SchemaTest extends \PHPUnit_Framework_TestCase
 
         $this->assertTrue($table->hasIndex('le_id_idx'));
     }
+
+    public function testDeepClone()
+    {
+        $schema = new Schema();
+        $sequence = $schema->createSequence('baz');
+
+        $tableA = $schema->createTable('foo');
+        $tableA->createColumn('id', 'integer');
+
+        $tableB = $schema->createTable('bar');
+        $tableB->createColumn('id', 'integer');
+        $tableB->createcolumn('foo_id', 'integer');
+        $tableB->addForeignKeyConstraint($tableA, array('foo_id'), array('id'));
+
+        $schemaNew = clone $schema;
+
+        $this->assertNotSame($sequence, $schemaNew->getSequence('baz'));
+
+        $this->assertNotSame($tableA, $schemaNew->getTable('foo'));
+        $this->assertNotSame($tableA->getColumn('id'), $schemaNew->getTable('foo')->getColumn('id'));
+
+        $this->assertNotSame($tableB, $schemaNew->getTable('bar'));
+        $this->assertNotSame($tableB->getColumn('id'), $schemaNew->getTable('bar')->getColumn('id'));
+
+        $fk = current( $schemaNew->getTable('bar')->getForeignKeys() );
+        $this->assertSame($schemaNew->getTable('bar'), $this->readAttribute($fk, '_localTable'));
+    }
 }
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