128 lines
3.5 KiB
PHP
128 lines
3.5 KiB
PHP
<?php
|
|
/**
|
|
* Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
|
|
* This file is licensed under the Affero General Public License version 3 or
|
|
* later.
|
|
* See the COPYING-README file.
|
|
*/
|
|
|
|
class OC_DB_Schema {
|
|
private static $DBNAME;
|
|
private static $DBTABLEPREFIX;
|
|
|
|
/**
|
|
* @brief saves database scheme to xml file
|
|
* @param string $file name of file
|
|
* @param int $mode
|
|
* @return bool
|
|
*
|
|
* TODO: write more documentation
|
|
*/
|
|
public static function getDbStructure( $conn, $file ,$mode=MDB2_SCHEMA_DUMP_STRUCTURE) {
|
|
$sm = $conn->getSchemaManager();
|
|
$fromSchema = $sm->createSchema();
|
|
|
|
return OC_DB_MDB2SchemaWriter::saveSchemaToFile($file);
|
|
}
|
|
|
|
/**
|
|
* @brief Creates tables from XML file
|
|
* @param string $file file to read structure from
|
|
* @return bool
|
|
*
|
|
* TODO: write more documentation
|
|
*/
|
|
public static function createDbFromStructure( $conn, $file ) {
|
|
$toSchema = OC_DB_MDB2SchemaReader::loadSchemaFromFile($file);
|
|
return self::executeSchemaChange($conn, $toSchema);
|
|
}
|
|
|
|
/**
|
|
* @brief update the database scheme
|
|
* @param string $file file to read structure from
|
|
* @return bool
|
|
*/
|
|
public static function updateDbFromStructure($conn, $file) {
|
|
$sm = $conn->getSchemaManager();
|
|
$fromSchema = $sm->createSchema();
|
|
|
|
$toSchema = OC_DB_MDB2SchemaReader::loadSchemaFromFile($file);
|
|
|
|
// remove tables we don't know about
|
|
foreach($fromSchema->getTables() as $table) {
|
|
if (!$toSchema->hasTable($table->getName())) {
|
|
$fromSchema->dropTable($table->getName());
|
|
}
|
|
}
|
|
|
|
$comparator = new \Doctrine\DBAL\Schema\Comparator();
|
|
$schemaDiff = $comparator->compare($fromSchema, $toSchema);
|
|
|
|
//$from = $fromSchema->toSql($conn->getDatabasePlatform());
|
|
//$to = $toSchema->toSql($conn->getDatabasePlatform());
|
|
//echo($from[9]);
|
|
//echo '<br>';
|
|
//echo($to[9]);
|
|
//var_dump($from, $to);
|
|
return self::executeSchemaChange($conn, $schemaDiff);
|
|
}
|
|
|
|
/**
|
|
* @brief drop a table
|
|
* @param string $tableName the table to drop
|
|
*/
|
|
public static function dropTable($conn, $tableName) {
|
|
$sm = $conn->getSchemaManager();
|
|
$fromSchema = $sm->createSchema();
|
|
$toSchema = clone $fromSchema;
|
|
$toSchema->dropTable('user');
|
|
$sql = $fromSchema->getMigrateToSql($toSchema, $conn->getDatabasePlatform());
|
|
var_dump($sql);
|
|
die;
|
|
$conn->execute($sql);
|
|
}
|
|
|
|
/**
|
|
* remove all tables defined in a database structure xml file
|
|
* @param string $file the xml file describing the tables
|
|
*/
|
|
public static function removeDBStructure($conn, $file) {
|
|
$fromSchema = OC_DB_MDB2SchemaReader::loadSchemaFromFile($file);
|
|
$toSchema = clone $fromSchema;
|
|
foreach($toSchema->getTables() as $table) {
|
|
$toSchema->dropTable($table->getName());
|
|
}
|
|
$comparator = new \Doctrine\DBAL\Schema\Comparator();
|
|
$schemaDiff = $comparator->compare($fromSchema, $toSchema);
|
|
self::executeSchemaChange($conn, $schemaDiff);
|
|
}
|
|
|
|
/**
|
|
* @brief replaces the owncloud tables with a new set
|
|
* @param $file string path to the MDB2 xml db export file
|
|
*/
|
|
public static function replaceDB( $conn, $file ) {
|
|
$apps = OC_App::getAllApps();
|
|
self::beginTransaction();
|
|
// Delete the old tables
|
|
self::removeDBStructure( OC::$SERVERROOT . '/db_structure.xml' );
|
|
|
|
foreach($apps as $app) {
|
|
$path = OC_App::getAppPath($app).'/appinfo/database.xml';
|
|
if(file_exists($path)) {
|
|
self::removeDBStructure( $path );
|
|
}
|
|
}
|
|
|
|
// Create new tables
|
|
self::commit();
|
|
}
|
|
|
|
private static function executeSchemaChange($conn, $schema) {
|
|
$conn->beginTransaction();
|
|
foreach($schema->toSql($conn->getDatabasePlatform()) as $sql) {
|
|
$conn->query($sql);
|
|
}
|
|
$conn->commit();
|
|
}
|
|
}
|