Added reference to original schema or table in schema difference classes

lib/Doctrine/DBAL/Schema/ColumnDiff.php

@@ -24,7 +24,7 @@ namespace Doctrine\DBAL\Schema;
 /**
  * Represent the change of a column
  *
- * 
+ *
  * @link    www.doctrine-project.org
  * @since   2.0
  * @version $Revision$
@@ -44,11 +44,17 @@ class ColumnDiff
      */
     public $changedProperties = array();
 
-    public function __construct($oldColumnName, Column $column, array $changedProperties = array())
+    /**
+     * @var Column
+     */
+    public $fromColumn;
+
+    public function __construct($oldColumnName, Column $column, array $changedProperties = array(), Column $fromColumn = null)
     {
         $this->oldColumnName = $oldColumnName;
         $this->column = $column;
         $this->changedProperties = $changedProperties;
+        $this->fromColumn = $fromColumn;
     }
 
     public function hasChanged($propertyName)

lib/Doctrine/DBAL/Schema/Comparator.php

@@ -58,6 +58,7 @@ class Comparator
     public function compare(Schema $fromSchema, Schema $toSchema)
     {
         $diff = new SchemaDiff();
+        $diff->fromSchema = $fromSchema;
 
         $foreignKeysToTable = array();
 
@@ -179,6 +180,7 @@ class Comparator
     {
         $changes = 0;
         $tableDifferences = new TableDiff($table1->getName());
+        $tableDifferences->fromTable = $table1;
 
         $table1Columns = $table1->getColumns();
         $table2Columns = $table2->getColumns();
@@ -203,6 +205,7 @@ class Comparator
                 $changedProperties = $this->diffColumn( $column, $table2->getColumn($columnName) );
                 if (count($changedProperties) ) {
                     $columnDiff = new ColumnDiff($column->getName(), $table2->getColumn($columnName), $changedProperties);
+                    $columnDiff->fromColumn = $column;
                     $tableDifferences->changedColumns[$column->getName()] = $columnDiff;
                     $changes++;
                 }

lib/Doctrine/DBAL/Schema/SchemaDiff.php

@@ -24,7 +24,7 @@ use \Doctrine\DBAL\Platforms\AbstractPlatform;
 /**
  * Schema Diff
  *
- * 
+ *
  * @link    www.doctrine-project.org
  * @copyright Copyright (C) 2005-2009 eZ Systems AS. All rights reserved.
  * @license http://ez.no/licenses/new_bsd New BSD License
@@ -34,6 +34,11 @@ use \Doctrine\DBAL\Platforms\AbstractPlatform;
  */
 class SchemaDiff
 {
+    /**
+     * @var Schema
+     */
+    public $fromSchema;
+
     /**
      * All added tables
      *
@@ -81,12 +86,14 @@ class SchemaDiff
      * @param array(string=>Table)      $newTables
      * @param array(string=>TableDiff)  $changedTables
      * @param array(string=>bool)       $removedTables
+     * @param Schema                    $fromSchema
      */
-    public function __construct($newTables = array(), $changedTables = array(), $removedTables = array())
+    public function __construct($newTables = array(), $changedTables = array(), $removedTables = array(), Schema $fromSchema = null)
     {
         $this->newTables = $newTables;
         $this->changedTables = $changedTables;
         $this->removedTables = $removedTables;
+        $this->fromSchema = $fromSchema;
     }
 
     /**

lib/Doctrine/DBAL/Schema/TableDiff.php

@@ -22,7 +22,7 @@ namespace Doctrine\DBAL\Schema;
 /**
  * Table Diff
  *
- * 
+ *
  * @link    www.doctrine-project.org
  * @copyright Copyright (C) 2005-2009 eZ Systems AS. All rights reserved.
  * @license http://ez.no/licenses/new_bsd New BSD License
@@ -111,6 +111,11 @@ class TableDiff
      */
     public $removedForeignKeys = array();
 
+    /**
+     * @var Table
+     */
+    public $fromTable;
+
     /**
      * Constructs an TableDiff object.
      *
@@ -120,10 +125,11 @@ class TableDiff
      * @param array(string=>Index)  $addedIndexes
      * @param array(string=>Index)  $changedIndexes
      * @param array(string=>bool)   $removedIndexes
+     * @param Table                 $fromTable
      */
     public function __construct($tableName, $addedColumns = array(),
         $changedColumns = array(), $removedColumns = array(), $addedIndexes = array(),
-        $changedIndexes = array(), $removedIndexes = array())
+        $changedIndexes = array(), $removedIndexes = array(), Table $fromTable = null)
     {
         $this->name = $tableName;
         $this->addedColumns = $addedColumns;
@@ -132,5 +138,6 @@ class TableDiff
         $this->addedIndexes = $addedIndexes;
         $this->changedIndexes = $changedIndexes;
         $this->removedIndexes = $removedIndexes;
+        $this->fromTable = $fromTable;
     }
 }

tests/Doctrine/Tests/DBAL/Schema/ComparatorTest.php

@@ -29,6 +29,7 @@ use Doctrine\DBAL\Schema\Schema,
     Doctrine\DBAL\Schema\Sequence,
     Doctrine\DBAL\Schema\SchemaDiff,
     Doctrine\DBAL\Schema\TableDiff,
+    Doctrine\DBAL\Schema\ColumnDiff,
     Doctrine\DBAL\Schema\Comparator,
     Doctrine\DBAL\Types\Type,
     Doctrine\DBAL\Schema\ForeignKeyConstraint;
@@ -61,7 +62,9 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
             ),
         ) );
 
-        $this->assertEquals(new SchemaDiff(), Comparator::compareSchemas( $schema1, $schema2 ) );
+        $expected = new SchemaDiff();
+        $expected->fromSchema = $schema1;
+        $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
     public function testCompareSame2()
@@ -82,7 +85,10 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 )
             ),
         ) );
-        $this->assertEquals(new SchemaDiff(), Comparator::compareSchemas( $schema1, $schema2 ) );
+
+        $expected = new SchemaDiff();
+        $expected->fromSchema = $schema1;
+        $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
     public function testCompareMissingTable()
@@ -94,7 +100,7 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
         $schema1 = new Schema( array($table), array(), $schemaConfig );
         $schema2 = new Schema( array(),       array(), $schemaConfig );
 
-        $expected = new SchemaDiff( array(), array(), array('bugdb' => $table) );
+        $expected = new SchemaDiff( array(), array(), array('bugdb' => $table), $schema1 );
 
         $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
@@ -108,7 +114,8 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
         $schema1 = new Schema( array(),       array(), $schemaConfig );
         $schema2 = new Schema( array($table), array(), $schemaConfig );
 
-        $expected = new SchemaDiff( array('bugdb' => $table), array(), array() );
+        $expected = new SchemaDiff( array('bugdb' => $table), array(), array(), $schema1 );
+
         $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
@@ -151,6 +158,9 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 )
             )
         );
+        $expected->fromSchema = $schema1;
+        $expected->changedTables['bugdb']->fromTable = $schema1->getTable('bugdb');
+
         $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
@@ -181,6 +191,9 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 ),
             )
         );
+        $expected->fromSchema = $schema1;
+        $expected->changedTables['bugdb']->fromTable = $schema1->getTable('bugdb');
+
         $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
@@ -251,6 +264,9 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 ),
             )
         );
+        $expected->fromSchema = $schema1;
+        $expected->changedTables['bugdb']->fromTable = $schema1->getTable('bugdb');
+
         $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
@@ -295,6 +311,9 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 ),
             )
         );
+        $expected->fromSchema = $schema1;
+        $expected->changedTables['bugdb']->fromTable = $schema1->getTable('bugdb');
+
         $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ) );
     }
 
@@ -346,8 +365,10 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 ),
             )
         );
-        $actual = Comparator::compareSchemas( $schema1, $schema2 );
-        $this->assertEquals($expected, $actual);
+        $expected->fromSchema = $schema1;
+        $expected->changedTables['bugdb']->fromTable = $schema1->getTable('bugdb');
+
+        $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ));
     }
 
     public function testCompareChangedIndexFieldPositions()
@@ -384,8 +405,10 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
                 ),
             )
         );
-        $actual = Comparator::compareSchemas( $schema1, $schema2 );
-        $this->assertEquals($expected, $actual);
+        $expected->fromSchema = $schema1;
+        $expected->changedTables['bugdb']->fromTable = $schema1->getTable('bugdb');
+
+        $this->assertEquals($expected, Comparator::compareSchemas( $schema1, $schema2 ));
     }
 
     public function testCompareSequences()
@@ -717,8 +740,10 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
         $newSchema= new Schema(array(), array(), $config);
         $newSchema->createTable('foo.bar');
 
-        $c = new Comparator();
-        $this->assertEquals(new SchemaDiff(), $c->compare($oldSchema, $newSchema));
+        $expected = new SchemaDiff();
+        $expected->fromSchema = $oldSchema;
+
+        $this->assertEquals($expected, Comparator::compareSchemas($oldSchema, $newSchema));
     }
 
     /**
@@ -735,9 +760,10 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
         $newSchema = new Schema();
         $newSchema->createTable('bar');
 
-        $c = new Comparator();
-        $diff = $c->compare($oldSchema, $newSchema);
-        $this->assertEquals(new SchemaDiff(), $c->compare($oldSchema, $newSchema));
+        $expected = new SchemaDiff();
+        $expected->fromSchema = $oldSchema;
+
+        $this->assertEquals($expected, Comparator::compareSchemas($oldSchema, $newSchema));
     }
 
     /**
@@ -753,10 +779,10 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
         $newSchema = new Schema();
         $newSchema->createTable('bar');
 
-        $c = new Comparator();
-        $diff = $c->compare($oldSchema, $newSchema);
+        $expected = new SchemaDiff();
+        $expected->fromSchema = $oldSchema;
 
-        $this->assertEquals(new SchemaDiff(), $c->compare($oldSchema, $newSchema));
+        $this->assertEquals($expected, Comparator::compareSchemas($oldSchema, $newSchema));
     }
 
     /**
@@ -810,6 +836,27 @@ class ComparatorTest extends \PHPUnit_Framework_TestCase
         $this->assertCount(1, $diff->orphanedForeignKeys);
     }
 
+    public function testCompareChangedColumn()
+    {
+        $oldSchema = new Schema();
+
+        $tableFoo = $oldSchema->createTable('foo');
+        $tableFoo->addColumn('id', 'integer');
+
+        $newSchema = new Schema();
+        $table = $newSchema->createTable('foo');
+        $table->addColumn('id', 'string');
+
+        $expected = new SchemaDiff();
+        $expected->fromSchema = $oldSchema;
+        $tableDiff = $expected->changedTables['foo'] = new TableDiff('foo');
+        $tableDiff->fromTable = $tableFoo;
+        $columnDiff = $tableDiff->changedColumns['id'] = new ColumnDiff('id', $table->getColumn('id'));
+        $columnDiff->fromColumn = $tableFoo->getColumn('id');
+        $columnDiff->changedProperties = array('type');
+
+        $this->assertEquals($expected, Comparator::compareSchemas($oldSchema, $newSchema));
+    }
 
     /**
      * @param SchemaDiff $diff