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lars |
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<?php
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/* SVN FILE: $Id: schema.php 7945 2008-12-19 02:16:01Z gwoo $ */
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/**
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* Schema database management for CakePHP.
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*
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* PHP versions 4 and 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://www.cakephp.org)
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* Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @filesource
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* @copyright Copyright 2005-2008, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.model
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* @since CakePHP(tm) v 1.2.0.5550
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* @version $Revision: 7945 $
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* @modifiedby $LastChangedBy: gwoo $
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* @lastmodified $Date: 2008-12-18 18:16:01 -0800 (Thu, 18 Dec 2008) $
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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App::import('Model', 'ConnectionManager');
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/**
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* Base Class for Schema management
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*
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* @package cake
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* @subpackage cake.cake.libs.model
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*/
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class CakeSchema extends Object {
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/**
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* Name of the App Schema
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*
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* @var string
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* @access public
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*/
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var $name = null;
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/**
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* Path to write location
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*
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* @var string
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* @access public
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*/
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var $path = null;
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/**
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* File to write
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*
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* @var string
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* @access public
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*/
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var $file = 'schema.php';
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/**
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* Connection used for read
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*
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* @var string
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* @access public
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*/
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var $connection = 'default';
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/**
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* Set of tables
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*
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* @var array
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* @access public
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*/
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var $tables = array();
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/**
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* Constructor
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*
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* @param array $options optional load object properties
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*/
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function __construct($options = array()) {
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parent::__construct();
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if (empty($options['name'])) {
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$this->name = preg_replace('/schema$/i', '', get_class($this));
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}
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if (strtolower($this->name) === 'cake') {
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$this->name = Inflector::camelize(Inflector::slug(Configure::read('App.dir')));
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}
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if (empty($options['path'])) {
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$this->path = CONFIGS . 'sql';
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}
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$options = array_merge(get_object_vars($this), $options);
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$this->_build($options);
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}
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/**
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* Builds schema object properties
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*
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* @param array $data loaded object properties
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* @return void
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* @access protected
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*/
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function _build($data) {
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$file = null;
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foreach ($data as $key => $val) {
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if (!empty($val)) {
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if (!in_array($key, array('name', 'path', 'file', 'connection', 'tables', '_log'))) {
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$this->tables[$key] = $val;
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unset($this->{$key});
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} elseif ($key !== 'tables') {
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if ($key === 'name' && $val !== $this->name && !isset($data['file'])) {
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$file = Inflector::underscore($val) . '.php';
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}
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$this->{$key} = $val;
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}
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}
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}
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if (file_exists($this->path . DS . $file) && is_file($this->path . DS . $file)) {
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$this->file = $file;
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}
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}
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/**
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* Before callback to be implemented in subclasses
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*
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* @param array $events schema object properties
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* @return boolean Should process continue
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* @access public
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*/
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function before($event = array()) {
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return true;
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}
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/**
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* After callback to be implemented in subclasses
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*
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* @param array $events schema object properties
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* @access public
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*/
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function after($event = array()) {
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}
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/**
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* Reads database and creates schema tables
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*
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* @param array $options schema object properties
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* @return array Set of name and tables
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* @access public
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*/
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function load($options = array()) {
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if (is_string($options)) {
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$options = array('path' => $options);
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}
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$this->_build($options);
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extract(get_object_vars($this));
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$class = $name .'Schema';
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if (!class_exists($class)) {
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if (file_exists($path . DS . $file) && is_file($path . DS . $file)) {
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require_once($path . DS . $file);
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} elseif (file_exists($path . DS . 'schema.php') && is_file($path . DS . 'schema.php')) {
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require_once($path . DS . 'schema.php');
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}
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}
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if (class_exists($class)) {
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$Schema =& new $class($options);
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return $Schema;
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}
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return false;
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}
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/**
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* Reads database and creates schema tables
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*
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* @param array $options schema object properties
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* 'connection' - the db connection to use
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* 'name' - name of the schema
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* 'models' - a list of models to use, or false to ignore models
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* @return array Array indexed by name and tables
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* @access public
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*/
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function read($options = array()) {
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extract(array_merge(
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array(
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'connection' => $this->connection,
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'name' => $this->name,
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'models' => true,
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),
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$options
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));
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$db =& ConnectionManager::getDataSource($connection);
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App::import('Model', 'AppModel');
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$tables = array();
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$currentTables = $db->listSources();
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$prefix = null;
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if (isset($db->config['prefix'])) {
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$prefix = $db->config['prefix'];
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}
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if (!is_array($models) && $models !== false) {
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$models = Configure::listObjects('model');
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}
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if (is_array($models)) {
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foreach ($models as $model) {
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if (PHP5) {
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$Object = ClassRegistry::init(array('class' => $model, 'ds' => $connection));
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} else {
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$Object =& ClassRegistry::init(array('class' => $model, 'ds' => $connection));
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}
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if (is_object($Object) && $Object->useTable !== false) {
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$Object->setDataSource($connection);
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$table = $db->fullTableName($Object, false);
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if (in_array($table, $currentTables)) {
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$key = array_search($table, $currentTables);
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if (empty($tables[$Object->table])) {
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$tables[$Object->table] = $this->__columns($Object);
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$tables[$Object->table]['indexes'] = $db->index($Object);
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unset($currentTables[$key]);
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}
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if (!empty($Object->hasAndBelongsToMany)) {
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foreach ($Object->hasAndBelongsToMany as $Assoc => $assocData) {
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if (isset($assocData['with'])) {
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$class = $assocData['with'];
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} elseif ($assocData['_with']) {
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$class = $assocData['_with'];
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}
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if (is_object($Object->$class)) {
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$table = $db->fullTableName($Object->$class, false);
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if (in_array($table, $currentTables)) {
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$key = array_search($table, $currentTables);
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$tables[$Object->$class->table] = $this->__columns($Object->$class);
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$tables[$Object->$class->table]['indexes'] = $db->index($Object->$class);
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unset($currentTables[$key]);
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}
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}
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}
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}
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}
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}
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}
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}
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if (!empty($currentTables)) {
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foreach ($currentTables as $table) {
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if ($prefix) {
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if (strpos($table, $prefix) !== 0) {
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continue;
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}
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$table = str_replace($prefix, '', $table);
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}
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$Object = new AppModel(array(
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'name' => Inflector::classify($table), 'table' => $table, 'ds' => $connection
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));
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$systemTables = array(
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'aros', 'acos', 'aros_acos', Configure::read('Session.table'), 'i18n'
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);
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if (in_array($table, $systemTables)) {
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$tables[$Object->table] = $this->__columns($Object);
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$tables[$Object->table]['indexes'] = $db->index($Object);
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} elseif ($models === false) {
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$tables[$table] = $this->__columns($Object);
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$tables[$table]['indexes'] = $db->index($Object);
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} else {
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$tables['missing'][$table] = $this->__columns($Object);
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$tables['missing'][$table]['indexes'] = $db->index($Object);
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}
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}
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}
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ksort($tables);
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return compact('name', 'tables');
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}
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/**
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* Writes schema file from object or options
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*
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* @param mixed $object schema object or options array
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* @param array $options schema object properties to override object
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* @return mixed false or string written to file
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* @access public
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*/
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function write($object, $options = array()) {
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if (is_object($object)) {
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$object = get_object_vars($object);
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$this->_build($object);
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}
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if (is_array($object)) {
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$options = $object;
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unset($object);
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}
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extract(array_merge(
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get_object_vars($this), $options
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));
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$out = "class {$name}Schema extends CakeSchema {\n";
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$out .= "\tvar \$name = '{$name}';\n\n";
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if ($path !== $this->path) {
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$out .= "\tvar \$path = '{$path}';\n\n";
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}
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if ($file !== $this->file) {
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$out .= "\tvar \$file = '{$file}';\n\n";
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}
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if ($connection !== 'default') {
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$out .= "\tvar \$connection = '{$connection}';\n\n";
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}
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$out .= "\tfunction before(\$event = array()) {\n\t\treturn true;\n\t}\n\n\tfunction after(\$event = array()) {\n\t}\n\n";
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if (empty($tables)) {
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$this->read();
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}
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foreach ($tables as $table => $fields) {
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if (!is_numeric($table) && $table !== 'missing') {
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$out .= "\tvar \${$table} = array(\n";
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if (is_array($fields)) {
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$cols = array();
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foreach ($fields as $field => $value) {
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if ($field != 'indexes') {
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if (is_string($value)) {
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$type = $value;
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$value = array('type'=> $type);
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}
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$col = "\t\t\t'{$field}' => array('type' => '" . $value['type'] . "', ";
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unset($value['type']);
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$col .= join(', ', $this->__values($value));
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} else {
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$col = "\t\t\t'indexes' => array(";
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$props = array();
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foreach ((array)$value as $key => $index) {
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$props[] = "'{$key}' => array(".join(', ', $this->__values($index)).")";
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}
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$col .= join(', ', $props);
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}
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$col .= ")";
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$cols[] = $col;
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}
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$out .= join(",\n", $cols);
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}
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$out .= "\n\t\t);\n";
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}
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}
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$out .="}\n";
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$File =& new File($path . DS . $file, true);
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$header = '$Id';
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$content = "<?php \n/* SVN FILE: $header$ */\n/* ". $name ." schema generated on: " . date('Y-m-d H:m:s') . " : ". time() . "*/\n{$out}?>";
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$content = $File->prepare($content);
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if ($File->write($content)) {
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return $content;
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}
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return false;
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}
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/**
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364 |
* Compares two sets of schemas
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365 |
*
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366 |
* @param mixed $old Schema object or array
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367 |
* @param mixed $new Schema object or array
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368 |
* @return array Tables (that are added, dropped, or changed)
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369 |
* @access public
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370 |
*/
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371 |
function compare($old, $new = null) {
|
|
|
372 |
if (empty($new)) {
|
|
|
373 |
$new = $this;
|
|
|
374 |
}
|
|
|
375 |
if (is_array($new)) {
|
|
|
376 |
if (isset($new['tables'])) {
|
|
|
377 |
$new = $new['tables'];
|
|
|
378 |
}
|
|
|
379 |
} else {
|
|
|
380 |
$new = $new->tables;
|
|
|
381 |
}
|
|
|
382 |
|
|
|
383 |
if (is_array($old)) {
|
|
|
384 |
if (isset($old['tables'])) {
|
|
|
385 |
$old = $old['tables'];
|
|
|
386 |
}
|
|
|
387 |
} else {
|
|
|
388 |
$old = $old->tables;
|
|
|
389 |
}
|
|
|
390 |
$tables = array();
|
|
|
391 |
foreach ($new as $table => $fields) {
|
|
|
392 |
if ($table == 'missing') {
|
|
|
393 |
break;
|
|
|
394 |
}
|
|
|
395 |
if (!array_key_exists($table, $old)) {
|
|
|
396 |
$tables[$table]['add'] = $fields;
|
|
|
397 |
} else {
|
|
|
398 |
$diff = array_diff_assoc($fields, $old[$table]);
|
|
|
399 |
if (!empty($diff)) {
|
|
|
400 |
$tables[$table]['add'] = $diff;
|
|
|
401 |
}
|
|
|
402 |
$diff = array_diff_assoc($old[$table], $fields);
|
|
|
403 |
if (!empty($diff)) {
|
|
|
404 |
$tables[$table]['drop'] = $diff;
|
|
|
405 |
}
|
|
|
406 |
}
|
|
|
407 |
foreach ($fields as $field => $value) {
|
|
|
408 |
if (isset($old[$table][$field])) {
|
|
|
409 |
$diff = array_diff_assoc($value, $old[$table][$field]);
|
|
|
410 |
if (!empty($diff) && $field !== 'indexes') {
|
|
|
411 |
$tables[$table]['change'][$field] = array_merge($old[$table][$field], $diff);
|
|
|
412 |
}
|
|
|
413 |
}
|
|
|
414 |
|
|
|
415 |
if (isset($add[$table][$field])) {
|
|
|
416 |
$wrapper = array_keys($fields);
|
|
|
417 |
if ($column = array_search($field, $wrapper)) {
|
|
|
418 |
if (isset($wrapper[$column - 1])) {
|
|
|
419 |
$tables[$table]['add'][$field]['after'] = $wrapper[$column - 1];
|
|
|
420 |
}
|
|
|
421 |
}
|
|
|
422 |
}
|
|
|
423 |
}
|
|
|
424 |
|
|
|
425 |
if (isset($old[$table]['indexes']) && isset($new[$table]['indexes'])) {
|
|
|
426 |
$diff = $this->_compareIndexes($new[$table]['indexes'], $old[$table]['indexes']);
|
|
|
427 |
if ($diff) {
|
|
|
428 |
$tables[$table]['drop']['indexes'] = $diff['drop'];
|
|
|
429 |
$tables[$table]['add']['indexes'] = $diff['add'];
|
|
|
430 |
}
|
|
|
431 |
}
|
|
|
432 |
}
|
|
|
433 |
return $tables;
|
|
|
434 |
}
|
|
|
435 |
/**
|
|
|
436 |
* Formats Schema columns from Model Object
|
|
|
437 |
*
|
|
|
438 |
* @param array $values options keys(type, null, default, key, length, extra)
|
|
|
439 |
* @return array Formatted values
|
|
|
440 |
* @access public
|
|
|
441 |
*/
|
|
|
442 |
function __values($values) {
|
|
|
443 |
$vals = array();
|
|
|
444 |
if (is_array($values)) {
|
|
|
445 |
foreach ($values as $key => $val) {
|
|
|
446 |
if (is_array($val)) {
|
|
|
447 |
$vals[] = "'{$key}' => array('".join("', '", $val)."')";
|
|
|
448 |
} else if (!is_numeric($key)) {
|
|
|
449 |
$val = var_export($val, true);
|
|
|
450 |
$vals[] = "'{$key}' => {$val}";
|
|
|
451 |
}
|
|
|
452 |
}
|
|
|
453 |
}
|
|
|
454 |
return $vals;
|
|
|
455 |
}
|
|
|
456 |
/**
|
|
|
457 |
* Formats Schema columns from Model Object
|
|
|
458 |
*
|
|
|
459 |
* @param array $Obj model object
|
|
|
460 |
* @return array Formatted columns
|
|
|
461 |
* @access public
|
|
|
462 |
*/
|
|
|
463 |
function __columns(&$Obj) {
|
|
|
464 |
$db =& ConnectionManager::getDataSource($Obj->useDbConfig);
|
|
|
465 |
$fields = $Obj->schema(true);
|
|
|
466 |
$columns = $props = array();
|
|
|
467 |
foreach ($fields as $name => $value) {
|
|
|
468 |
if ($Obj->primaryKey == $name) {
|
|
|
469 |
$value['key'] = 'primary';
|
|
|
470 |
}
|
|
|
471 |
if (!isset($db->columns[$value['type']])) {
|
|
|
472 |
trigger_error('Schema generation error: invalid column type ' . $value['type'] . ' does not exist in DBO', E_USER_NOTICE);
|
|
|
473 |
continue;
|
|
|
474 |
} else {
|
|
|
475 |
$defaultCol = $db->columns[$value['type']];
|
|
|
476 |
if (isset($defaultCol['limit']) && $defaultCol['limit'] == $value['length']) {
|
|
|
477 |
unset($value['length']);
|
|
|
478 |
} elseif (isset($defaultCol['length']) && $defaultCol['length'] == $value['length']) {
|
|
|
479 |
unset($value['length']);
|
|
|
480 |
}
|
|
|
481 |
unset($value['limit']);
|
|
|
482 |
}
|
|
|
483 |
|
|
|
484 |
if (isset($value['default']) && ($value['default'] === '' || $value['default'] === false)) {
|
|
|
485 |
unset($value['default']);
|
|
|
486 |
}
|
|
|
487 |
if (empty($value['length'])) {
|
|
|
488 |
unset($value['length']);
|
|
|
489 |
}
|
|
|
490 |
if (empty($value['key'])) {
|
|
|
491 |
unset($value['key']);
|
|
|
492 |
}
|
|
|
493 |
$columns[$name] = $value;
|
|
|
494 |
}
|
|
|
495 |
|
|
|
496 |
return $columns;
|
|
|
497 |
}
|
|
|
498 |
/**
|
|
|
499 |
* Compare two schema indexes
|
|
|
500 |
*
|
|
|
501 |
* @param array $new New indexes
|
|
|
502 |
* @param array $old Old indexes
|
|
|
503 |
* @return mixed false on failure or array of indexes to add and drop
|
|
|
504 |
*/
|
|
|
505 |
function _compareIndexes($new, $old) {
|
|
|
506 |
if (!is_array($new) || !is_array($old)) {
|
|
|
507 |
return false;
|
|
|
508 |
}
|
|
|
509 |
|
|
|
510 |
$add = $drop = array();
|
|
|
511 |
|
|
|
512 |
$diff = array_diff_assoc($new, $old);
|
|
|
513 |
if (!empty($diff)) {
|
|
|
514 |
$add = $diff;
|
|
|
515 |
}
|
|
|
516 |
|
|
|
517 |
$diff = array_diff_assoc($old, $new);
|
|
|
518 |
if (!empty($diff)) {
|
|
|
519 |
$drop = $diff;
|
|
|
520 |
}
|
|
|
521 |
|
|
|
522 |
foreach ($new as $name => $value) {
|
|
|
523 |
if (isset($old[$name])) {
|
|
|
524 |
$newUnique = isset($value['unique']) ? $value['unique'] : 0;
|
|
|
525 |
$oldUnique = isset($old[$name]['unique']) ? $old[$name]['unique'] : 0;
|
|
|
526 |
$newColumn = $value['column'];
|
|
|
527 |
$oldColumn = $old[$name]['column'];
|
|
|
528 |
|
|
|
529 |
$diff = false;
|
|
|
530 |
|
|
|
531 |
if ($newUnique != $oldUnique) {
|
|
|
532 |
$diff = true;
|
|
|
533 |
} elseif (is_array($newColumn) && is_array($oldColumn)) {
|
|
|
534 |
$diff = ($newColumn !== $oldColumn);
|
|
|
535 |
} elseif (is_string($newColumn) && is_string($oldColumn)) {
|
|
|
536 |
$diff = ($newColumn != $oldColumn);
|
|
|
537 |
} else {
|
|
|
538 |
$diff = true;
|
|
|
539 |
}
|
|
|
540 |
if ($diff) {
|
|
|
541 |
$drop[$name] = null;
|
|
|
542 |
$add[$name] = $value;
|
|
|
543 |
}
|
|
|
544 |
}
|
|
|
545 |
}
|
|
|
546 |
return array_filter(compact('add', 'drop'));
|
|
|
547 |
}
|
|
|
548 |
}
|
|
|
549 |
?>
|