348 lines
8.7 KiB
PHP
348 lines
8.7 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Oliver Gasser <oliver.gasser@gmail.com>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Robin McCorkell <robin@mccorkell.me.uk>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Victor Dubiniuk <dubiniuk@owncloud.com>
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* @author Vincent Petry <vincent@nextcloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\DB;
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use Doctrine\DBAL\Platforms\AbstractPlatform;
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use Doctrine\DBAL\Schema\Schema;
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use OCP\IConfig;
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class MDB2SchemaReader {
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/**
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* @var string $DBTABLEPREFIX
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*/
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protected $DBTABLEPREFIX;
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/**
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* @var \Doctrine\DBAL\Platforms\AbstractPlatform $platform
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*/
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protected $platform;
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/** @var IConfig */
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protected $config;
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/**
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* @param \OCP\IConfig $config
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* @param \Doctrine\DBAL\Platforms\AbstractPlatform $platform
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*/
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public function __construct(IConfig $config, AbstractPlatform $platform) {
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$this->platform = $platform;
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$this->config = $config;
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$this->DBTABLEPREFIX = $config->getSystemValue('dbtableprefix', 'oc_');
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}
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/**
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* @param string $file
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* @param Schema $schema
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* @return Schema
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* @throws \DomainException
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*/
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public function loadSchemaFromFile($file, Schema $schema) {
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$loadEntities = libxml_disable_entity_loader(false);
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$xml = simplexml_load_file($file);
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libxml_disable_entity_loader($loadEntities);
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foreach ($xml->children() as $child) {
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/**
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* @var \SimpleXMLElement $child
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*/
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switch ($child->getName()) {
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case 'name':
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case 'create':
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case 'overwrite':
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case 'charset':
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break;
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case 'table':
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$this->loadTable($schema, $child);
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break;
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default:
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throw new \DomainException('Unknown element: ' . $child->getName());
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}
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}
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return $schema;
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}
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/**
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* @param \Doctrine\DBAL\Schema\Schema $schema
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* @param \SimpleXMLElement $xml
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* @throws \DomainException
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*/
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private function loadTable($schema, $xml) {
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$table = null;
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foreach ($xml->children() as $child) {
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/**
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* @var \SimpleXMLElement $child
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*/
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switch ($child->getName()) {
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case 'name':
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$name = (string)$child;
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$name = str_replace('*dbprefix*', $this->DBTABLEPREFIX, $name);
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$name = $this->platform->quoteIdentifier($name);
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$table = $schema->createTable($name);
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break;
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case 'create':
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case 'overwrite':
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case 'charset':
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break;
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case 'declaration':
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if (is_null($table)) {
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throw new \DomainException('Table declaration before table name');
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}
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$this->loadDeclaration($table, $child);
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break;
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default:
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throw new \DomainException('Unknown element: ' . $child->getName());
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}
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}
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}
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/**
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* @param \Doctrine\DBAL\Schema\Table $table
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* @param \SimpleXMLElement $xml
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* @throws \DomainException
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*/
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private function loadDeclaration($table, $xml) {
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foreach ($xml->children() as $child) {
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/**
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* @var \SimpleXMLElement $child
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*/
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switch ($child->getName()) {
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case 'field':
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$this->loadField($table, $child);
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break;
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case 'index':
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$this->loadIndex($table, $child);
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break;
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default:
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throw new \DomainException('Unknown element: ' . $child->getName());
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}
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}
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}
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/**
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* @param \Doctrine\DBAL\Schema\Table $table
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* @param \SimpleXMLElement $xml
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* @throws \DomainException
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*/
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private function loadField($table, $xml) {
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$options = [ 'notnull' => false ];
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foreach ($xml->children() as $child) {
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/**
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* @var \SimpleXMLElement $child
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*/
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switch ($child->getName()) {
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case 'name':
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$name = (string)$child;
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$name = $this->platform->quoteIdentifier($name);
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break;
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case 'type':
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$type = (string)$child;
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switch ($type) {
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case 'text':
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$type = 'string';
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break;
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case 'clob':
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$type = 'text';
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break;
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case 'timestamp':
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$type = 'datetime';
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break;
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case 'numeric':
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$type = 'decimal';
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break;
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}
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break;
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case 'length':
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$length = (string)$child;
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$options['length'] = $length;
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break;
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case 'unsigned':
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$unsigned = $this->asBool($child);
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$options['unsigned'] = $unsigned;
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break;
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case 'notnull':
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$notnull = $this->asBool($child);
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$options['notnull'] = $notnull;
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break;
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case 'autoincrement':
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$autoincrement = $this->asBool($child);
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$options['autoincrement'] = $autoincrement;
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break;
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case 'default':
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$default = (string)$child;
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$options['default'] = $default;
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break;
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case 'comments':
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$comment = (string)$child;
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$options['comment'] = $comment;
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break;
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case 'primary':
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$primary = $this->asBool($child);
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$options['primary'] = $primary;
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break;
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case 'precision':
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$precision = (string)$child;
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$options['precision'] = $precision;
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break;
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case 'scale':
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$scale = (string)$child;
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$options['scale'] = $scale;
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break;
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default:
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throw new \DomainException('Unknown element: ' . $child->getName());
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}
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}
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if (isset($name) && isset($type)) {
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if (isset($options['default']) && empty($options['default'])) {
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if (empty($options['notnull']) || !$options['notnull']) {
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unset($options['default']);
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$options['notnull'] = false;
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} else {
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$options['default'] = '';
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}
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if ($type == 'integer' || $type == 'decimal') {
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$options['default'] = 0;
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} elseif ($type == 'boolean') {
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$options['default'] = false;
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}
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if (!empty($options['autoincrement']) && $options['autoincrement']) {
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unset($options['default']);
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}
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}
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if ($type === 'integer' && isset($options['default'])) {
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$options['default'] = (int)$options['default'];
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}
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if ($type === 'integer' && isset($options['length'])) {
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$length = $options['length'];
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if ($length < 4) {
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$type = 'smallint';
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} elseif ($length > 4) {
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$type = 'bigint';
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}
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}
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if ($type === 'boolean' && isset($options['default'])) {
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$options['default'] = $this->asBool($options['default']);
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}
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if (!empty($options['autoincrement'])
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&& !empty($options['notnull'])
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) {
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$options['primary'] = true;
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}
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$table->addColumn($name, $type, $options);
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if (!empty($options['primary']) && $options['primary']) {
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$table->setPrimaryKey([$name]);
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}
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}
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}
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/**
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* @param \Doctrine\DBAL\Schema\Table $table
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* @param \SimpleXMLElement $xml
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* @throws \DomainException
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*/
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private function loadIndex($table, $xml) {
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$name = null;
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$fields = [];
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foreach ($xml->children() as $child) {
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/**
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* @var \SimpleXMLElement $child
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*/
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switch ($child->getName()) {
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case 'name':
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$name = (string)$child;
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break;
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case 'primary':
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$primary = $this->asBool($child);
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break;
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case 'unique':
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$unique = $this->asBool($child);
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break;
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case 'field':
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foreach ($child->children() as $field) {
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/**
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* @var \SimpleXMLElement $field
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*/
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switch ($field->getName()) {
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case 'name':
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$field_name = (string)$field;
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$field_name = $this->platform->quoteIdentifier($field_name);
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$fields[] = $field_name;
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break;
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case 'sorting':
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break;
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default:
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throw new \DomainException('Unknown element: ' . $field->getName());
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}
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}
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break;
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default:
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throw new \DomainException('Unknown element: ' . $child->getName());
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}
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}
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if (!empty($fields)) {
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if (isset($primary) && $primary) {
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if ($table->hasPrimaryKey()) {
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return;
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}
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$table->setPrimaryKey($fields, $name);
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} else {
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if (isset($unique) && $unique) {
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$table->addUniqueIndex($fields, $name);
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} else {
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$table->addIndex($fields, $name);
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}
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}
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} else {
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throw new \DomainException('Empty index definition: ' . $name . ' options:' . print_r($fields, true));
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}
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}
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/**
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* @param \SimpleXMLElement|string $xml
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* @return bool
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*/
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private function asBool($xml) {
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$result = (string)$xml;
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if ($result == 'true') {
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$result = true;
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} elseif ($result == 'false') {
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$result = false;
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}
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return (bool)$result;
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}
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}
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