mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 19:38:26 +00:00
686b9c2c8b
Also fixed an issue in DboPostgres where the generated alter statements would contain too many ;. Test cases added. Fixes #1023
796 lines
21 KiB
PHP
796 lines
21 KiB
PHP
<?php
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/**
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* MySQL layer for DBO
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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://cakephp.org)
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* Copyright 2005-2010, Cake Software Foundation, Inc. (http://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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* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.model.datasources.dbo
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* @since CakePHP(tm) v 0.10.5.1790
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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/**
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* Provides common base for MySQL & MySQLi connections
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*
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* @package cake
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* @subpackage cake.cake.libs.model.datasources.dbo
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*/
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class DboMysqlBase extends DboSource {
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/**
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* Description property.
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*
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* @var string
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*/
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var $description = "MySQL DBO Base Driver";
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/**
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* Start quote
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*
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* @var string
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*/
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var $startQuote = "`";
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/**
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* End quote
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*
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* @var string
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*/
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var $endQuote = "`";
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/**
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* use alias for update and delete. Set to true if version >= 4.1
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*
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* @var boolean
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* @access protected
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*/
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var $_useAlias = true;
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/**
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* Index of basic SQL commands
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*
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* @var array
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* @access protected
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*/
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var $_commands = array(
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'begin' => 'START TRANSACTION',
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'commit' => 'COMMIT',
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'rollback' => 'ROLLBACK'
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);
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/**
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* List of engine specific additional field parameters used on table creating
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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 $fieldParameters = array(
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'charset' => array('value' => 'CHARACTER SET', 'quote' => false, 'join' => ' ', 'column' => false, 'position' => 'beforeDefault'),
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'collate' => array('value' => 'COLLATE', 'quote' => false, 'join' => ' ', 'column' => 'Collation', 'position' => 'beforeDefault'),
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'comment' => array('value' => 'COMMENT', 'quote' => true, 'join' => ' ', 'column' => 'Comment', 'position' => 'afterDefault')
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);
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/**
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* List of table engine specific parameters used on table creating
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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 $tableParameters = array(
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'charset' => array('value' => 'DEFAULT CHARSET', 'quote' => false, 'join' => '=', 'column' => 'charset'),
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'collate' => array('value' => 'COLLATE', 'quote' => false, 'join' => '=', 'column' => 'Collation'),
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'engine' => array('value' => 'ENGINE', 'quote' => false, 'join' => '=', 'column' => 'Engine')
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);
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/**
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* MySQL column definition
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*
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* @var array
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*/
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var $columns = array(
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'primary_key' => array('name' => 'NOT NULL AUTO_INCREMENT'),
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'string' => array('name' => 'varchar', 'limit' => '255'),
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'text' => array('name' => 'text'),
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'integer' => array('name' => 'int', 'limit' => '11', 'formatter' => 'intval'),
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'float' => array('name' => 'float', 'formatter' => 'floatval'),
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'datetime' => array('name' => 'datetime', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'timestamp' => array('name' => 'timestamp', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'time' => array('name' => 'time', 'format' => 'H:i:s', 'formatter' => 'date'),
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'date' => array('name' => 'date', 'format' => 'Y-m-d', 'formatter' => 'date'),
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'binary' => array('name' => 'blob'),
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'boolean' => array('name' => 'tinyint', 'limit' => '1')
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);
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/**
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* Returns an array of the fields in given table name.
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*
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* @param string $tableName Name of database table to inspect
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* @return array Fields in table. Keys are name and type
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*/
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function describe(&$model) {
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$cache = parent::describe($model);
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if ($cache != null) {
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return $cache;
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}
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$fields = false;
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$cols = $this->query('SHOW FULL COLUMNS FROM ' . $this->fullTableName($model));
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foreach ($cols as $column) {
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$colKey = array_keys($column);
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if (isset($column[$colKey[0]]) && !isset($column[0])) {
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$column[0] = $column[$colKey[0]];
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}
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if (isset($column[0])) {
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$fields[$column[0]['Field']] = array(
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'type' => $this->column($column[0]['Type']),
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'null' => ($column[0]['Null'] == 'YES' ? true : false),
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'default' => $column[0]['Default'],
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'length' => $this->length($column[0]['Type']),
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);
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if (!empty($column[0]['Key']) && isset($this->index[$column[0]['Key']])) {
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$fields[$column[0]['Field']]['key'] = $this->index[$column[0]['Key']];
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}
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foreach ($this->fieldParameters as $name => $value) {
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if (!empty($column[0][$value['column']])) {
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$fields[$column[0]['Field']][$name] = $column[0][$value['column']];
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}
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}
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if (isset($fields[$column[0]['Field']]['collate'])) {
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$charset = $this->getCharsetName($fields[$column[0]['Field']]['collate']);
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if ($charset) {
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$fields[$column[0]['Field']]['charset'] = $charset;
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}
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}
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}
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}
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$this->__cacheDescription($this->fullTableName($model, false), $fields);
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return $fields;
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}
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/**
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* Generates and executes an SQL UPDATE statement for given model, fields, and values.
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*
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* @param Model $model
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* @param array $fields
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* @param array $values
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* @param mixed $conditions
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* @return array
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*/
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function update(&$model, $fields = array(), $values = null, $conditions = null) {
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if (!$this->_useAlias) {
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return parent::update($model, $fields, $values, $conditions);
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}
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if ($values == null) {
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$combined = $fields;
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} else {
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$combined = array_combine($fields, $values);
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}
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$alias = $joins = false;
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$fields = $this->_prepareUpdateFields($model, $combined, empty($conditions), !empty($conditions));
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$fields = implode(', ', $fields);
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$table = $this->fullTableName($model);
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if (!empty($conditions)) {
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$alias = $this->name($model->alias);
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if ($model->name == $model->alias) {
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$joins = implode(' ', $this->_getJoins($model));
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}
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}
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$conditions = $this->conditions($this->defaultConditions($model, $conditions, $alias), true, true, $model);
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if ($conditions === false) {
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return false;
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}
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if (!$this->execute($this->renderStatement('update', compact('table', 'alias', 'joins', 'fields', 'conditions')))) {
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$model->onError();
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return false;
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}
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return true;
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}
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/**
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* Generates and executes an SQL DELETE statement for given id/conditions on given model.
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*
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* @param Model $model
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* @param mixed $conditions
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* @return boolean Success
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*/
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function delete(&$model, $conditions = null) {
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if (!$this->_useAlias) {
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return parent::delete($model, $conditions);
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}
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$alias = $this->name($model->alias);
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$table = $this->fullTableName($model);
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$joins = implode(' ', $this->_getJoins($model));
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if (empty($conditions)) {
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$alias = $joins = false;
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}
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$conditions = $this->conditions($this->defaultConditions($model, $conditions, $alias), true, true, $model);
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if ($conditions === false) {
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return false;
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}
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if ($this->execute($this->renderStatement('delete', compact('alias', 'table', 'joins', 'conditions'))) === false) {
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$model->onError();
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return false;
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}
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return true;
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}
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/**
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* Sets the database encoding
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*
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* @param string $enc Database encoding
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*/
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function setEncoding($enc) {
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return $this->_execute('SET NAMES ' . $enc) != false;
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}
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/**
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* Returns an array of the indexes in given datasource name.
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*
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* @param string $model Name of model to inspect
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* @return array Fields in table. Keys are column and unique
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*/
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function index($model) {
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$index = array();
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$table = $this->fullTableName($model);
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if ($table) {
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$indexes = $this->query('SHOW INDEX FROM ' . $table);
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if (isset($indexes[0]['STATISTICS'])) {
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$keys = Set::extract($indexes, '{n}.STATISTICS');
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} else {
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$keys = Set::extract($indexes, '{n}.0');
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}
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foreach ($keys as $i => $key) {
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if (!isset($index[$key['Key_name']])) {
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$col = array();
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$index[$key['Key_name']]['column'] = $key['Column_name'];
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$index[$key['Key_name']]['unique'] = intval($key['Non_unique'] == 0);
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} else {
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if (!is_array($index[$key['Key_name']]['column'])) {
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$col[] = $index[$key['Key_name']]['column'];
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}
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$col[] = $key['Column_name'];
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$index[$key['Key_name']]['column'] = $col;
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}
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}
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}
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return $index;
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}
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/**
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* Generate a MySQL Alter Table syntax for the given Schema comparison
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*
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* @param array $compare Result of a CakeSchema::compare()
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* @return array Array of alter statements to make.
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*/
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function alterSchema($compare, $table = null) {
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if (!is_array($compare)) {
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return false;
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}
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$out = '';
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$colList = array();
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foreach ($compare as $curTable => $types) {
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$indexes = $tableParameters = $colList = array();
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if (!$table || $table == $curTable) {
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$out .= 'ALTER TABLE ' . $this->fullTableName($curTable) . " \n";
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foreach ($types as $type => $column) {
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if (isset($column['indexes'])) {
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$indexes[$type] = $column['indexes'];
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unset($column['indexes']);
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}
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if (isset($column['tableParameters'])) {
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$tableParameters[$type] = $column['tableParameters'];
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unset($column['tableParameters']);
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}
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switch ($type) {
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case 'add':
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foreach ($column as $field => $col) {
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$col['name'] = $field;
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$alter = 'ADD ' . $this->buildColumn($col);
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if (isset($col['after'])) {
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$alter .= ' AFTER ' . $this->name($col['after']);
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}
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$colList[] = $alter;
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}
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break;
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case 'drop':
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foreach ($column as $field => $col) {
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$col['name'] = $field;
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$colList[] = 'DROP ' . $this->name($field);
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}
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break;
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case 'change':
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foreach ($column as $field => $col) {
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if (!isset($col['name'])) {
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$col['name'] = $field;
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}
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$colList[] = 'CHANGE ' . $this->name($field) . ' ' . $this->buildColumn($col);
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}
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break;
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}
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}
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$colList = array_merge($colList, $this->_alterIndexes($curTable, $indexes));
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$colList = array_merge($colList, $this->_alterTableParameters($curTable, $tableParameters));
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$out .= "\t" . join(",\n\t", $colList) . ";\n\n";
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}
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}
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return $out;
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}
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/**
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* Generate a MySQL "drop table" statement for the given Schema object
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*
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* @param object $schema An instance of a subclass of CakeSchema
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* @param string $table Optional. If specified only the table name given will be generated.
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* Otherwise, all tables defined in the schema are generated.
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* @return string
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*/
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function dropSchema($schema, $table = null) {
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if (!is_a($schema, 'CakeSchema')) {
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trigger_error(__('Invalid schema object', true), E_USER_WARNING);
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return null;
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}
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$out = '';
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foreach ($schema->tables as $curTable => $columns) {
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if (!$table || $table == $curTable) {
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$out .= 'DROP TABLE IF EXISTS ' . $this->fullTableName($curTable) . ";\n";
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}
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}
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return $out;
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}
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/**
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* Generate MySQL table parameter alteration statementes for a table.
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*
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* @param string $table Table to alter parameters for.
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* @param array $parameters Parameters to add & drop.
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* @return array Array of table property alteration statementes.
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* @todo Implement this method.
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*/
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function _alterTableParameters($table, $parameters) {
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if (isset($parameters['change'])) {
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return $this->buildTableParameters($parameters['change']);
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}
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return array();
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}
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/**
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* Generate MySQL index alteration statements for a table.
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*
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* @param string $table Table to alter indexes for
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* @param array $new Indexes to add and drop
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* @return array Index alteration statements
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*/
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function _alterIndexes($table, $indexes) {
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$alter = array();
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if (isset($indexes['drop'])) {
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foreach($indexes['drop'] as $name => $value) {
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$out = 'DROP ';
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if ($name == 'PRIMARY') {
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$out .= 'PRIMARY KEY';
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} else {
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$out .= 'KEY ' . $name;
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}
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$alter[] = $out;
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}
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}
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if (isset($indexes['add'])) {
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foreach ($indexes['add'] as $name => $value) {
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$out = 'ADD ';
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if ($name == 'PRIMARY') {
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$out .= 'PRIMARY ';
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$name = null;
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} else {
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if (!empty($value['unique'])) {
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$out .= 'UNIQUE ';
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}
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}
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if (is_array($value['column'])) {
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$out .= 'KEY '. $name .' (' . implode(', ', array_map(array(&$this, 'name'), $value['column'])) . ')';
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} else {
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$out .= 'KEY '. $name .' (' . $this->name($value['column']) . ')';
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}
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$alter[] = $out;
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}
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}
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return $alter;
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}
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/**
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* Inserts multiple values into a table
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*
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* @param string $table
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* @param string $fields
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* @param array $values
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*/
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function insertMulti($table, $fields, $values) {
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$table = $this->fullTableName($table);
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if (is_array($fields)) {
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$fields = implode(', ', array_map(array(&$this, 'name'), $fields));
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}
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$values = implode(', ', $values);
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$this->query("INSERT INTO {$table} ({$fields}) VALUES {$values}");
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}
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/**
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* Returns an detailed array of sources (tables) in the database.
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*
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* @param string $name Table name to get parameters
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* @return array Array of tablenames in the database
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*/
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function listDetailedSources($name = null) {
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$condition = '';
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if (is_string($name)) {
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$condition = ' LIKE ' . $this->value($name);
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}
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$result = $this->query('SHOW TABLE STATUS FROM ' . $this->name($this->config['database']) . $condition . ';');
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if (!$result) {
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return array();
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} else {
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$tables = array();
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foreach ($result as $row) {
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$tables[$row['TABLES']['Name']] = $row['TABLES'];
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if (!empty($row['TABLES']['Collation'])) {
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$charset = $this->getCharsetName($row['TABLES']['Collation']);
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if ($charset) {
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$tables[$row['TABLES']['Name']]['charset'] = $charset;
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}
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}
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}
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if (is_string($name)) {
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return $tables[$name];
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}
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return $tables;
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}
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}
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/**
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* Converts database-layer column types to basic types
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*
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* @param string $real Real database-layer column type (i.e. "varchar(255)")
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* @return string Abstract column type (i.e. "string")
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*/
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function column($real) {
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if (is_array($real)) {
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$col = $real['name'];
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if (isset($real['limit'])) {
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$col .= '('.$real['limit'].')';
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}
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return $col;
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}
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$col = str_replace(')', '', $real);
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$limit = $this->length($real);
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if (strpos($col, '(') !== false) {
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list($col, $vals) = explode('(', $col);
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}
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if (in_array($col, array('date', 'time', 'datetime', 'timestamp'))) {
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return $col;
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}
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if (($col == 'tinyint' && $limit == 1) || $col == 'boolean') {
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return 'boolean';
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}
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if (strpos($col, 'int') !== false) {
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return 'integer';
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}
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if (strpos($col, 'char') !== false || $col == 'tinytext') {
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return 'string';
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}
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if (strpos($col, 'text') !== false) {
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return 'text';
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}
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if (strpos($col, 'blob') !== false || $col == 'binary') {
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return 'binary';
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}
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if (strpos($col, 'float') !== false || strpos($col, 'double') !== false || strpos($col, 'decimal') !== false) {
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return 'float';
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}
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if (strpos($col, 'enum') !== false) {
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return "enum($vals)";
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}
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return 'text';
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}
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}
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/**
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* MySQL DBO driver object
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*
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* Provides connection and SQL generation for MySQL RDMS
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*
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* @package cake
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* @subpackage cake.cake.libs.model.datasources.dbo
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*/
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class DboMysql extends DboMysqlBase {
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/**
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* Datasource description
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*
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* @var string
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*/
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var $description = "MySQL DBO Driver";
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/**
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* Base configuration settings for MySQL driver
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*
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* @var array
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*/
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var $_baseConfig = array(
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'persistent' => true,
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'host' => 'localhost',
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'login' => 'root',
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'password' => '',
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'database' => 'cake',
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'port' => '3306'
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);
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return boolean True if the database could be connected, else false
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*/
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function connect() {
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$config = $this->config;
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$this->connected = false;
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if (!$config['persistent']) {
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$this->connection = mysql_connect($config['host'] . ':' . $config['port'], $config['login'], $config['password'], true);
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$config['connect'] = 'mysql_connect';
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} else {
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$this->connection = mysql_pconnect($config['host'] . ':' . $config['port'], $config['login'], $config['password']);
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}
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if (mysql_select_db($config['database'], $this->connection)) {
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$this->connected = true;
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}
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if (!empty($config['encoding'])) {
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$this->setEncoding($config['encoding']);
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}
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$this->_useAlias = (bool)version_compare(mysql_get_server_info($this->connection), "4.1", ">=");
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return $this->connected;
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}
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/**
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* Check whether the MySQL extension is installed/loaded
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*
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* @return boolean
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*/
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function enabled() {
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return extension_loaded('mysql');
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}
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/**
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* Disconnects from database.
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*
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* @return boolean True if the database could be disconnected, else false
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*/
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function disconnect() {
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if (isset($this->results) && is_resource($this->results)) {
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mysql_free_result($this->results);
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}
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$this->connected = !@mysql_close($this->connection);
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return !$this->connected;
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}
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/**
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* Executes given SQL statement.
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*
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* @param string $sql SQL statement
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* @return resource Result resource identifier
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* @access protected
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*/
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function _execute($sql) {
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return mysql_query($sql, $this->connection);
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}
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/**
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* Returns an array of sources (tables) in the database.
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*
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* @return array Array of tablenames in the database
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*/
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function listSources() {
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$cache = parent::listSources();
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if ($cache != null) {
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return $cache;
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}
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$result = $this->_execute('SHOW TABLES FROM ' . $this->name($this->config['database']) . ';');
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if (!$result) {
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return array();
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} else {
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$tables = array();
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while ($line = mysql_fetch_row($result)) {
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$tables[] = $line[0];
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}
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parent::listSources($tables);
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return $tables;
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}
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}
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/**
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* Returns a quoted and escaped string of $data for use in an SQL statement.
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*
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* @param string $data String to be prepared for use in an SQL statement
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* @param string $column The column into which this data will be inserted
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* @param boolean $safe Whether or not numeric data should be handled automagically if no column data is provided
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* @return string Quoted and escaped data
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*/
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function value($data, $column = null, $safe = false) {
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$parent = parent::value($data, $column, $safe);
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if ($parent != null) {
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return $parent;
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}
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if ($data === null || (is_array($data) && empty($data))) {
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return 'NULL';
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}
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if ($data === '' && $column !== 'integer' && $column !== 'float' && $column !== 'boolean') {
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return "''";
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}
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if (empty($column)) {
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$column = $this->introspectType($data);
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}
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switch ($column) {
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case 'boolean':
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return $this->boolean((bool)$data);
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break;
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case 'integer':
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case 'float':
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if ($data === '') {
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return 'NULL';
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}
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if ((is_int($data) || is_float($data) || $data === '0') || (
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is_numeric($data) && strpos($data, ',') === false &&
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$data[0] != '0' && strpos($data, 'e') === false)) {
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return $data;
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}
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default:
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$data = "'" . mysql_real_escape_string($data, $this->connection) . "'";
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break;
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}
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return $data;
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}
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/**
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* Returns a formatted error message from previous database operation.
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*
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* @return string Error message with error number
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*/
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function lastError() {
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if (mysql_errno($this->connection)) {
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return mysql_errno($this->connection).': '.mysql_error($this->connection);
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}
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return null;
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}
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/**
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* Returns number of affected rows in previous database operation. If no previous operation exists,
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* this returns false.
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*
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* @return integer Number of affected rows
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*/
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function lastAffected() {
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if ($this->_result) {
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return mysql_affected_rows($this->connection);
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}
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return null;
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}
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/**
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* Returns number of rows in previous resultset. If no previous resultset exists,
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* this returns false.
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*
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* @return integer Number of rows in resultset
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*/
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function lastNumRows() {
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if ($this->hasResult()) {
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return mysql_num_rows($this->_result);
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}
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return null;
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}
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/**
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* Returns the ID generated from the previous INSERT operation.
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*
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* @param unknown_type $source
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* @return in
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*/
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function lastInsertId($source = null) {
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$id = $this->fetchRow('SELECT LAST_INSERT_ID() AS insertID', false);
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if ($id !== false && !empty($id) && !empty($id[0]) && isset($id[0]['insertID'])) {
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return $id[0]['insertID'];
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}
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return null;
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $results
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*/
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function resultSet(&$results) {
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if (isset($this->results) && is_resource($this->results) && $this->results != $results) {
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mysql_free_result($this->results);
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}
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$this->results =& $results;
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$this->map = array();
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$numFields = mysql_num_fields($results);
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$index = 0;
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$j = 0;
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while ($j < $numFields) {
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$column = mysql_fetch_field($results, $j);
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if (!empty($column->table) && strpos($column->name, $this->virtualFieldSeparator) === false) {
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$this->map[$index++] = array($column->table, $column->name);
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} else {
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$this->map[$index++] = array(0, $column->name);
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}
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$j++;
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}
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}
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/**
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* Fetches the next row from the current result set
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*
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* @return unknown
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*/
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function fetchResult() {
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if ($row = mysql_fetch_row($this->results)) {
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$resultRow = array();
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$i = 0;
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foreach ($row as $index => $field) {
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list($table, $column) = $this->map[$index];
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$resultRow[$table][$column] = $row[$index];
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$i++;
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}
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return $resultRow;
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} else {
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return false;
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}
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}
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/**
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* Gets the database encoding
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*
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* @return string The database encoding
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*/
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function getEncoding() {
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return mysql_client_encoding($this->connection);
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}
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/**
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* Query charset by collation
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*
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* @param string $name Collation name
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* @return string Character set name
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*/
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function getCharsetName($name) {
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if ((bool)version_compare(mysql_get_server_info($this->connection), "5", ">=")) {
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$cols = $this->query('SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.COLLATIONS WHERE COLLATION_NAME= ' . $this->value($name) . ';');
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if (isset($cols[0]['COLLATIONS']['CHARACTER_SET_NAME'])) {
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return $cols[0]['COLLATIONS']['CHARACTER_SET_NAME'];
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}
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}
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return false;
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}
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}
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