Hi, greetings to Norway!
For my implementation of a proof of concept content repository[1] I need to
change the database schema on the fly. Changing schemas during production is
not that uncommon: The search function of eZPublish used to create temporary
tables and in ERP software you normally create temporary tables to analyze
data.
With the current state of DbSchema I have to define a table like this:
-----------------------------------------------------------------------------
public static function getCommonTableBase( $name )
{
return new ezcDbSchemaDiff( array( $name =>
new ezcDbSchemaTable( array( // type len notNull default
autoInc unsigned
'content_object_id' => new ezcDbSchemaField( 'integer', 0, TRUE, 0,
FALSE, TRUE ),
'version' => new ezcDbSchemaField( 'integer', 0, TRUE, 0,
FALSE, TRUE ),
'locale' => new ezcDbSchemaField( 'text', 255, TRUE, '',
FALSE, TRUE ),
'name' => new ezcDbSchemaField( 'text', 255, TRUE, '',
FALSE, TRUE ),
'creator_id' => new ezcDbSchemaField( 'text', 255, TRUE, '',
FALSE, TRUE ),
'created' => new ezcDbSchemaField( 'timestamp', 0, TRUE, 0,
FALSE, TRUE ),
'published' => new ezcDbSchemaField( 'timestamp', 0, FALSE, 0,
FALSE, TRUE )
), // Indexes
array(
'primary' => new ezcDbSchemaIndex( array(
'content_object_id' => new ezcDbSchemaIndexField(),
'version' => new ezcDbSchemaIndexField(),
'locale' => new ezcDbSchemaIndexField()
),
TRUE, TRUE // primary, unique
),
),
'name' => new ezcDbSchemaIndex( array(
'name' => new ezcDbSchemaIndexField()
),
FALSE, FALSE // primary, unique
),
)
)));
}
---------------------------------------------------------------------------
I propose, to implement an additional fluent interface which would allow me to
write:
----------------------------------------------------------------------------
public static function getCommonTableBaseNew( $name )
{
return ezcDbSchemaDiff::create()
->addTable()
->addColumn( 'content_object_id', ezcDbSchema::INTEGER )
->addColumn( 'version', ezcDbSchema::INTEGER )
->addColumn( 'locale', ezcDbSchema::TEXT )
->addColumn( 'name', ezcDbSchema::TEXT )
->addColumn( 'creator_id', ezcDbSchema::TEXT )
->addColumn( 'created', ezcDbSchema::TIMESTAMP )
->addColumn( 'published', ezcDbSchema::TIMESTAMP )
->addIndex( 'primary', 'content_object_id',ezcDbSchema::ASC,
'version', // Defaults to ASC
'locale', ezcDbSchema::DESC )
->isPrimary( TRUE )
->isUnique( TRUE )
->addIndex( 'name' ) // Default Index name = Column name
;
}
----------------------------------------------------------------------------
The implementation is currently only in my head, but I'd be happy to provide a
patch, if you'd like to implement it.
[1]
http://www.koch.ro/blog/index.php?/archives/75-Changing-Database-Schemas.html
Best regards,
--
Thomas Koch, Software Developer
http://www.koch.ro
Young Media Concepts GmbH
Sonnenstr. 4
CH-8280 Kreuzlingen
Switzerland
Tel +41 (0)71 / 508 24 86
Fax +41 (0)71 / 560 53 89
Mobile +49 (0)170 / 753 89 16
Web www.ymc.ch
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