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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Bart Visscher <bartv@thisnet.nl>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author tbelau666 <thomas.belau@gmx.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\DB;
use Doctrine\DBAL\Schema\Column;
use Doctrine\DBAL\Schema\Index;
class MDB2SchemaWriter {
/**
* @param string $file
* @param \OC\DB\Connection $conn
* @return bool
*/
static public function saveSchemaToFile($file, \OC\DB\Connection $conn) {
$config = \OC::$server->getConfig();
$xml = new \SimpleXMLElement('<database/>');
$xml->addChild('name', $config->getSystemValue('dbname', 'owncloud'));
$xml->addChild('create', 'true');
$xml->addChild('overwrite', 'false');
if($config->getSystemValue('dbtype', 'sqlite') === 'mysql' && $config->getSystemValue('mysql.utf8mb4', false)) {
$xml->addChild('charset', 'utf8mb4');
} else {
$xml->addChild('charset', 'utf8');
}
// FIX ME: bloody work around
if ($config->getSystemValue('dbtype', 'sqlite') === 'oci') {
$filterExpression = '/^"' . preg_quote($conn->getPrefix()) . '/';
} else {
$filterExpression = '/^' . preg_quote($conn->getPrefix()) . '/';
}
$conn->getConfiguration()->setFilterSchemaAssetsExpression($filterExpression);
foreach ($conn->getSchemaManager()->listTables() as $table) {
self::saveTable($table, $xml->addChild('table'));
}
file_put_contents($file, $xml->asXML());
return true;
}
/**
* @param \Doctrine\DBAL\Schema\Table $table
* @param \SimpleXMLElement $xml
*/
private static function saveTable($table, $xml) {
$xml->addChild('name', $table->getName());
$declaration = $xml->addChild('declaration');
foreach($table->getColumns() as $column) {
self::saveColumn($column, $declaration->addChild('field'));
}
foreach($table->getIndexes() as $index) {
if ($index->getName() == 'PRIMARY') {
$autoincrement = false;
foreach($index->getColumns() as $column) {
if ($table->getColumn($column)->getAutoincrement()) {
$autoincrement = true;
}
}
if ($autoincrement) {
continue;
}
}
self::saveIndex($index, $declaration->addChild('index'));
}
}
/**
* @param Column $column
* @param \SimpleXMLElement $xml
*/
private static function saveColumn($column, $xml) {
$xml->addChild('name', $column->getName());
switch($column->getType()) {
case 'SmallInt':
case 'Integer':
case 'BigInt':
$xml->addChild('type', 'integer');
$default = $column->getDefault();
if (is_null($default) && $column->getAutoincrement()) {
$default = '0';
}
$xml->addChild('default', $default);
$xml->addChild('notnull', self::toBool($column->getNotnull()));
if ($column->getAutoincrement()) {
$xml->addChild('autoincrement', '1');
}
if ($column->getUnsigned()) {
$xml->addChild('unsigned', 'true');
}
$length = '4';
if ($column->getType() == 'SmallInt') {
$length = '2';
}
elseif ($column->getType() == 'BigInt') {
$length = '8';
}
$xml->addChild('length', $length);
break;
case 'String':
$xml->addChild('type', 'text');
$default = trim($column->getDefault());
if ($default === '') {
$default = false;
}
$xml->addChild('default', $default);
$xml->addChild('notnull', self::toBool($column->getNotnull()));
$xml->addChild('length', $column->getLength());
break;
case 'Text':
$xml->addChild('type', 'clob');
$xml->addChild('notnull', self::toBool($column->getNotnull()));
break;
case 'Decimal':
$xml->addChild('type', 'decimal');
$xml->addChild('default', $column->getDefault());
$xml->addChild('notnull', self::toBool($column->getNotnull()));
$xml->addChild('length', '15');
break;
case 'Boolean':
$xml->addChild('type', 'integer');
$xml->addChild('default', $column->getDefault());
$xml->addChild('notnull', self::toBool($column->getNotnull()));
$xml->addChild('length', '1');
break;
case 'DateTime':
$xml->addChild('type', 'timestamp');
$xml->addChild('default', $column->getDefault());
$xml->addChild('notnull', self::toBool($column->getNotnull()));
break;
}
}
/**
* @param Index $index
* @param \SimpleXMLElement $xml
*/
private static function saveIndex($index, $xml) {
$xml->addChild('name', $index->getName());
if ($index->isPrimary()) {
$xml->addChild('primary', 'true');
}
elseif ($index->isUnique()) {
$xml->addChild('unique', 'true');
}
foreach($index->getColumns() as $column) {
$field = $xml->addChild('field');
$field->addChild('name', $column);
$field->addChild('sorting', 'ascending');
}
}
private static function toBool($bool) {
return $bool ? 'true' : 'false';
}
}