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<?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_MDB2SchemaWriter {
static public function saveSchemaToFile($file, $sm) {
$xml = new SimpleXMLElement('<database/>');
$xml->addChild('name', OC_Config::getValue( "dbname", "owncloud" ));
$xml->addChild('create', 'true');
$xml->addChild('overwrite', 'false');
$xml->addChild('charset', 'utf8');
foreach ($sm->listTables() as $table) {
self::saveTable($table, $xml->addChild('table'));
}
file_put_contents($file, $xml->asXML());
return true;
}
private static function saveTable($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, $declaration->addChild('index'));
}
}
private static function saveColumn($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;
}
}
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';
}
}
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