www.gusucode.com > FavShop网店系统源码程序 > FavShop网店系统 1.0/upload/cake/libs/model/schema.php
<?php
/* SVN FILE: $Id: schema.php 6311 2008-01-02 06:33:52Z phpnut $ */
/**
* Schema database management for CakePHP.
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
* Copyright 2005-2008, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc.
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
* @package cake
* @subpackage cake.cake.libs
* @since CakePHP(tm) v 1.2.0.5550
* @version $Revision: 6311 $
* @modifiedby $LastChangedBy: phpnut $
* @lastmodified $Date: 2008-01-02 00:33:52 -0600 (Wed, 02 Jan 2008) $
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
if (!class_exists('connectionmanager')) {
uses('model' . DS . 'connection_manager');
}
/**
* Base Class for Schema management
*
* @package cake.libs
* @subpackage cake.libs
*/
class CakeSchema extends Object {
/**
* Name of the App Schema
*
* @var string
* @access public
*/
var $name = null;
/**
* Path to write location
*
* @var string
* @access public
*/
var $path = null;
/**
* File to write
*
* @var string
* @access public
*/
var $file = 'schema.php';
/**
* Connection used for read
*
* @var string
* @access public
*/
var $connection = 'default';
/**
* Set of tables
*
* @var array
* @access public
*/
var $tables = array();
/**
* Constructor
*
* @param array $options optional load object properties
*/
function __construct($options = array()) {
parent::__construct();
if (empty($options['name'])) {
$this->name = preg_replace('/schema$/i', '', get_class($this));
}
if ($this->name === 'Cake') {
$this->name = Inflector::camelize(Configure::read('App.dir'));
}
if (empty($options['path'])) {
$this->path = CONFIGS . 'sql';
}
$options = array_merge(get_object_vars($this), $options);
$this->_build($options);
}
/**
* Builds schema object properties
*
* @param array $data loaded object properties
* @access protected
*/
function _build($data) {
$file = null;
foreach ($data as $key => $val) {
if (!empty($val)) {
if (!in_array($key, array('name', 'path', 'file', 'connection', 'tables', '_log'))) {
$this->tables[$key] = $val;
unset($this->{$key});
} elseif ($key !== 'tables') {
if ($key === 'name' && $val !== $this->name) {
$file = Inflector::underscore($val) . '.php';
}
$this->{$key} = $val;
}
}
}
if (file_exists($this->path . DS . $file) && is_file($this->path . DS . $file)) {
$this->file = $file;
}
}
/**
* Before callback to be implemented in subclasses
*
* @param array $events schema object properties
* @return boolean Should process continue
* @access public
*/
function before($event = array()) {
return true;
}
/**
* After callback to be implemented in subclasses
*
* @param array $events schema object properties
* @access public
*/
function after($event = array()) {
}
/**
* Reads database and creates schema tables
*
* @param array $options schema object properties
* @return array Set of name and tables
* @access public
*/
function load($options = array()) {
if (is_string($options)) {
$options = array('path'=> $options);
}
$this->_build($options);
extract(get_object_vars($this));
$class = $name .'Schema';
if (!class_exists($class)) {
if (file_exists($path . DS . $file) && is_file($path . DS . $file)) {
require_once($path . DS . $file);
} elseif (file_exists($path . DS . 'schema.php') && is_file($path . DS . 'schema.php')) {
require_once($path . DS . 'schema.php');
}
}
if (class_exists($class)) {
$Schema =& new $class($options);
return $Schema;
}
return false;
}
/**
* Reads database and creates schema tables
*
* @param array $options schema object properties
* @return array Array indexed by name and tables
* @access public
*/
function read($options = array()) {
extract(array_merge(
array(
'connection' => $this->connection,
'name' => $this->name,
'models' => true,
),
$options
));
$db =& ConnectionManager::getDataSource($connection);
$prefix = null;
App::import('Model', 'AppModel');
$tables = array();
$currentTables = $db->sources();
if (isset($db->config['prefix'])) {
$prefix = $db->config['prefix'];
}
if (!is_array($models) && $models !== false) {
$appPaths = array_diff(Configure::read('modelPaths'), Configure::corePaths('model'));
$models = Configure::listObjects('model', $appPaths, false);
}
if (is_array($models)) {
foreach ($models as $model) {
if (!class_exists($model)) {
App::import('Model', $model);
}
if (class_exists($model)) {
$Object =& new $model();
$Object->setDataSource($connection);
$table = $db->fullTableName($Object, false);
if (is_object($Object)) {
$table = $db->fullTableName($Object, false);
if (in_array($table, $currentTables)) {
$key = array_search($table, $currentTables);
if (empty($tables[$Object->table])) {
$tables[$Object->table] = $this->__columns($Object);
$tables[$Object->table]['indexes'] = $db->index($Object);
unset($currentTables[$key]);
}
if (!empty($Object->hasAndBelongsToMany)) {
foreach($Object->hasAndBelongsToMany as $Assoc => $assocData) {
if (isset($assocData['with'])) {
$class = $assocData['with'];
} elseif ($assocData['_with']) {
$class = $assocData['_with'];
}
if (is_object($Object->$class)) {
$table = $db->fullTableName($Object->$class, false);
if (in_array($table, $currentTables)) {
$key = array_search($table, $currentTables);
$tables[$Object->$class->table] = $this->__columns($Object->$class);
$tables[$Object->$class->table]['indexes'] = $db->index($Object->$class);
unset($currentTables[$key]);
}
}
}
}
}
}
}
}
}
if (!empty($currentTables)) {
foreach($currentTables as $table) {
if ($prefix) {
$table = str_replace($prefix, '', $table);
}
$Object = new AppModel(array('name'=> Inflector::classify($table), 'table'=> $table, 'ds'=> $connection));
if (in_array($table, array('aros', 'acos', 'aros_acos', Configure::read('Session.table'), 'i18n'))) {
$tables[$Object->table] = $this->__columns($Object);
$tables[$Object->table]['indexes'] = $db->index($Object);
} else {
$tables['missing'][$table] = $this->__columns($Object);
$tables['missing'][$table]['indexes'] = $db->index($Object);
}
}
}
ksort($tables);
return compact('name', 'tables');
}
/**
* Writes schema file from object or options
*
* @param mixed $object schema object or options array
* @param array $options schema object properties to override object
* @return mixed false or string written to file
* @access public
*/
function write($object, $options = array()) {
if (is_object($object)) {
$object = get_object_vars($object);
$this->_build($object);
}
if (is_array($object)) {
$options = $object;
unset($object);
}
extract(array_merge(
get_object_vars($this), $options
));
$out = "\n\nclass {$name}Schema extends CakeSchema {\n\n";
$out .= "\tvar \$name = '{$name}';\n\n";
if ($path !== $this->path) {
$out .= "\tvar \$path = '{$path}';\n\n";
}
if ($file !== $this->file) {
$out .= "\tvar \$file = '{$file}';\n\n";
}
if ($connection !== 'default') {
$out .= "\tvar \$connection = '{$connection}';\n\n";
}
$out .= "\tfunction before(\$event = array()) {\n\t\treturn true;\n\t}\n\n\tfunction after(\$event = array()) {\n\t}\n\n";
if (empty($tables)) {
$this->read();
}
foreach ($tables as $table => $fields) {
if (!is_numeric($table) && $table !== 'missing') {
$out .= "\tvar \${$table} = array(\n";
if (is_array($fields)) {
$cols = array();
foreach ($fields as $field => $value) {
if ($field != 'indexes') {
if (is_string($value)) {
$type = $value;
$value = array('type'=> $type);
}
$col = "\t\t\t'{$field}' => array('type'=>'" . $value['type'] . "', ";
unset($value['type']);
$col .= join(', ', $this->__values($value));
} else {
$col = "\t\t\t'indexes' => array(";
$props = array();
foreach ($value as $key => $index) {
$props[] = "'{$key}' => array(".join(', ', $this->__values($index)).")";
}
$col .= join(', ', $props);
}
$col .= ")";
$cols[] = $col;
}
$out .= join(",\n", $cols);
}
$out .= "\n\t\t);\n";
$out .="\n";
}
}
$out .="}\n";
$File =& new File($path . DS . $file, true);
$content = "<?php \n/* SVN FILE: \$Id: schema.php 6311 2008-01-02 06:33:52Z phpnut $ */\n/*". $name ." schema generated on: " . date('Y-m-d H:m:s') . " : ". time() . "*/\n{$out}?>";
$content = $File->prepare($content);
if ($File->write($content)) {
return $content;
}
return false;
}
/**
* Compares two sets of schemas
*
* @param mixed $old Schema object or array
* @param mixed $new Schema object or array
* @return array Tables (that are added, dropped, or changed)
* @access public
*/
function compare($old, $new = null) {
if (empty($new)) {
$new = $this;
}
if (is_array($new)) {
if (isset($new['tables'])) {
$new = $new['tables'];
}
} else {
$new = $new->tables;
}
if (is_array($old)) {
if (isset($old['tables'])) {
$old = $old['tables'];
}
} else {
$old = $old->tables;
}
$tables = array();
foreach ($new as $table => $fields) {
if ($table == 'missing') {
break;
}
if (!array_key_exists($table, $old)) {
$tables[$table]['add'] = $fields;
} else {
$diff = array_diff_assoc($fields, $old[$table]);
if (!empty($diff)) {
$tables[$table]['add'] = $diff;
}
$diff = array_diff_assoc($old[$table], $fields);
if (!empty($diff)) {
$tables[$table]['drop'] = $diff;
}
}
foreach ($fields as $field => $value) {
if (isset($old[$table][$field])) {
$diff = array_diff_assoc($value, $old[$table][$field]);
if (!empty($diff)) {
$tables[$table]['change'][$field] = array_merge($old[$table][$field], $diff);
}
}
if (isset($add[$table][$field])) {
$wrapper = array_keys($fields);
if ($column = array_search($field, $wrapper)) {
if (isset($wrapper[$column - 1])) {
$tables[$table]['add'][$field]['after'] = $wrapper[$column - 1];
}
}
}
}
}
return $tables;
}
/**
* Formats Schema columns from Model Object
*
* @param array $values options keys(type, null, default, key, length, extra)
* @return array Formatted values
* @access public
*/
function __values($values) {
$vals = array();
if (is_array($values)) {
foreach ($values as $key => $val) {
if (is_array($val)) {
$vals[] = "'{$key}' => array('".join("', '", $val)."')";
} else if (!is_numeric($key)) {
$val = var_export($val, true);
$vals[] = "'{$key}' => {$val}";
}
}
}
return $vals;
}
/**
* Formats Schema columns from Model Object
*
* @param array $Obj model object
* @return array Formatted columns
* @access public
*/
function __columns(&$Obj) {
$db =& ConnectionManager::getDataSource($Obj->useDbConfig);
$fields = $Obj->schema(true);
$columns = $props = array();
foreach ($fields as $name => $value) {
if ($Obj->primaryKey == $name) {
$value['key'] = 'primary';
}
if (!isset($db->columns[$value['type']])) {
trigger_error('Schema generation error: invalid column type ' . $value['type'] . ' does not exist in DBO', E_USER_NOTICE);
continue;
} else {
$defaultCol = $db->columns[$value['type']];
if (isset($defaultCol['limit']) && $defaultCol['limit'] == $value['length']) {
unset($value['length']);
} elseif (isset($defaultCol['length']) && $defaultCol['length'] == $value['length']) {
unset($value['length']);
}
unset($value['limit']);
}
if (isset($value['default']) && ($value['default'] === '' || $value['default'] === false)) {
unset($value['default']);
}
if (empty($value['length'])) {
unset($value['length']);
}
if (empty($value['key'])) {
unset($value['key']);
}
if (empty($value['extra'])) {
unset($value['extra']);
}
$columns[$name] = $value;
}
return $columns;
}
}
?>