mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-15 19:38:26 +00:00
896f62544b
git-svn-id: https://svn.cakephp.org/repo/branches/1.2.x.x@5860 3807eeeb-6ff5-0310-8944-8be069107fe0
633 lines
No EOL
15 KiB
PHP
633 lines
No EOL
15 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* Oracle layer for DBO.
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*
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* Long description for file
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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 2005-2007, Cake Software Foundation, Inc.
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* 1785 E. Sahara Avenue, Suite 490-204
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* Las Vegas, Nevada 89104
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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 2005-2007, Cake Software Foundation, Inc.
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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.datasources.dbo
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* @since CakePHP v 1.2.0.4041
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* @version $Revision$
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* @modifiedby $LastChangedBy$
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* @lastmodified $Date$
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License
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*/
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/**
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* Short description for class.
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*
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* Long description for class
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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 DboOracle extends DboSource {
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access public
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*/
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var $config;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access public
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*/
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var $alias = '';
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/**
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* The name of the model's sequence
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*
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* @var unknown_type
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*/
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var $sequence = '';
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/**
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* Transaction in progress flag
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*
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* @var boolean
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*/
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var $__transactionStarted = false;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access public
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*/
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var $columns = array(
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'primary_key' => array('name' => 'number NOT NULL'),
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'string' => array('name' => 'varchar2', 'limit' => '255'),
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'text' => array('name' => 'varchar2'),
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'integer' => array('name' => 'numeric'),
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'float' => array('name' => 'float'),
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'datetime' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
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'timestamp' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
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'time' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
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'date' => array('name' => 'date', 'format' => 'Y-m-d H:i:s'),
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'binary' => array('name' => 'bytea'),
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'boolean' => array('name' => 'boolean'),
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'number' => array('name' => 'numeric'),
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'inet' => array('name' => 'inet'));
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $connection;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $_limit = -1;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $_offset = 0;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $_map;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $_currentRow;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $_numRows;
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/**
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* Enter description here...
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*
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* @var unknown_type
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* @access protected
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*/
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var $_results;
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/**
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* Connects to the database using options in the given configuration array.
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*
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* @return boolean True if the database could be connected, else false
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* @access public
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*/
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function connect() {
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$config = $this->config;
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$connect = $config['connect'];
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$this->connected = false;
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$config['charset'] = !empty($config['charset']) ? $config['charset'] : null;
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$this->connection = $connect($config['login'], $config['password'], $config['database'], $config['charset']);
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if ($this->connection) {
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$this->connected = true;
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if (!empty($config['nls_sort'])) {
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$this->execute('ALTER SESSION SET NLS_SORT='.$config['nls_sort']);
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}
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if (!empty($config['nls_comp'])) {
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$this->execute('ALTER SESSION SET NLS_COMP='.$config['nls_comp']);
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}
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$this->execute("ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS'");
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} else {
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$this->connected = false;
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}
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return $this->connected;
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}
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/**
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* Sets the encoding language of the session
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*
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* @param string $lang language constant
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* @return bool
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*/
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function setEncoding($lang) {
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if (!$this->execute('ALTER SESSION SET NLS_LANGUAGE='.$lang)) {
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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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* Gets the current encoding language
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*
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* @return string language constant
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*/
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function getEncoding() {
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$sql = 'SELECT VALUE FROM NLS_SESSION_PARAMETERS WHERE PARAMETER=\'NLS_LANGUAGE\'';
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if (!$this->execute($sql)) {
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return false;
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}
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if (!$row = $this->fetchRow()) {
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return false;
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}
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return $row[0]['VALUE'];
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}
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/**
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* Disconnects from database.
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*
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* @return boolean True if the database could be disconnected, else false
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* @access public
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*/
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function disconnect() {
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if ($this->connection) {
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$this->connected = !ocilogoff($this->connection);
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return !$this->connected;
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}
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}
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/**
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* Scrape the incoming SQL to create the association map. This is an extremely
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* experimental method that creates the association maps since Oracle will not tell us.
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*
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* @param string $sql
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* @return false if sql is nor a SELECT
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* @access protected
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*/
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function _scrapeSQL($sql) {
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$sql = str_replace("\"", '', $sql);
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$preFrom = preg_split('/\bFROM\b/', $sql);
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$preFrom = $preFrom[0];
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$find = array('SELECT');
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$replace = array('');
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$fieldList = trim(str_replace($find, $replace, $preFrom));
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$fields = preg_split('/,\s+/', $fieldList);//explode(', ', $fieldList);
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$lastTableName = '';
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foreach($fields as $key => $value) {
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if ($value != 'COUNT(*) AS count') {
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if (preg_match('/\s+(\w+(\.\w+)*)$/', $value, $matches)) {
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$fields[$key] = $matches[1];
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if (preg_match('/^(\w+\.)/', $value, $matches)) {
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$fields[$key] = $matches[1] . $fields[$key];
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$lastTableName = $matches[1];
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}
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}
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/*
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if (preg_match('/(([[:alnum:]_]+)\.[[:alnum:]_]+)(\s+AS\s+(\w+))?$/i', $value, $matches)) {
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$fields[$key] = isset($matches[4]) ? $matches[2] . '.' . $matches[4] : $matches[1];
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}
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*/
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}
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}
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$this->_map = array();
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foreach($fields as $f) {
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$e = explode('.', $f);
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if (count($e) > 1) {
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$table = $e[0];
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$field = strtolower($e[1]);
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} else {
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$table = 0;
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$field = $e[0];
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}
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$this->_map[] = array($table, $field);
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}
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}
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/**
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* Modify a SQL query to limit (and offset) the result set
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*
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* @param integer $limit Maximum number of rows to return
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* @param integer $offset Row to begin returning
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* @return modified SQL Query
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* @access public
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*/
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function limit($limit = -1, $offset = 0) {
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$this->_limit = (int) $limit;
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$this->_offset = (int) $offset;
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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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* @access public
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*/
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function lastNumRows() {
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return $this->_numRows;
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}
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/**
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* Executes given SQL statement. This is an overloaded method.
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*
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* @param string $sql SQL statement
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* @return resource Result resource identifier or null
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* @access protected
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*/
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function _execute($sql) {
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$this->_statementId = ociparse($this->connection, $sql);
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if (!$this->_statementId) {
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return null;
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}
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if ($this->__transactionStarted) {
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$mode = OCI_DEFAULT;
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} else {
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$mode = OCI_COMMIT_ON_SUCCESS;
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}
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if (!ociexecute($this->_statementId, $mode)) {
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return false;
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}
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switch(ocistatementtype($this->_statementId)) {
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case 'DESCRIBE':
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case 'SELECT':
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$this->_scrapeSQL($sql);
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break;
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default:
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return $this->_statementId;
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break;
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}
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if ($this->_limit >= 1) {
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ocisetprefetch($this->_statementId, $this->_limit);
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} else {
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ocisetprefetch($this->_statementId, 3000);
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}
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$this->_numRows = ocifetchstatement($this->_statementId, $this->_results, $this->_offset, $this->_limit, OCI_NUM | OCI_FETCHSTATEMENT_BY_ROW);
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$this->_currentRow = 0;
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$this->limit();
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return $this->_statementId;
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}
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/**
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* Enter description here...
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*
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* @return unknown
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* @access public
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*/
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function fetchRow() {
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if ($this->_currentRow >= $this->_numRows) {
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ocifreestatement($this->_statementId);
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$this->_map = null;
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$this->_results = null;
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$this->_currentRow = null;
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$this->_numRows = null;
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return false;
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}
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$resultRow = array();
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foreach($this->_results[$this->_currentRow] as $index => $field) {
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list($table, $column) = $this->_map[$index];
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if (strpos($column, ' count')) {
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$resultRow[0]['count'] = $field;
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} else {
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$resultRow[$table][$column] = $this->_results[$this->_currentRow][$index];
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}
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}
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$this->_currentRow++;
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return $resultRow;
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}
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/**
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* Checks to see if a named sequence exists
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*
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* @param string $sequence
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* @return bool
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* @access public
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*/
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function sequenceExists($sequence) {
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$sql = "SELECT SEQUENCE_NAME FROM USER_SEQUENCES WHERE SEQUENCE_NAME = '$sequence'";
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if (!$this->execute($sql)) {
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return false;
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}
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return $this->fetchRow();
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}
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/**
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* Creates a database sequence
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*
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* @param string $sequence
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* @return bool
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* @access public
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*/
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function createSequence($sequence) {
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$sql = "CREATE SEQUENCE $sequence";
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return $this->execute($sql);
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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 $table
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* @return unknown
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* @access public
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*/
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function createTrigger($table) {
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$sql = "CREATE OR REPLACE TRIGGER pk_$table" . "_trigger BEFORE INSERT ON $table FOR EACH ROW BEGIN SELECT pk_$table.NEXTVAL INTO :NEW.ID FROM DUAL; END;";
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return $this->execute($sql);
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}
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/**
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* Returns an array of tables in the database. If there are no tables, an error is
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* raised and the application exits.
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*
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* @return array tablenames in the database
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* @access public
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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 $cache;
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}
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$sql = 'SELECT view_name AS name FROM user_views UNION SELECT table_name AS name FROM user_tables';
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if (!$this->execute($sql)) {
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return false;
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}
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$sources = array();
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while($r = $this->fetchRow()) {
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$sources[] = $r[0]['name'];
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}
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parent::listSources($sources);
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return $sources;
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}
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/**
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* Returns an array of the fields in given table name.
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*
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* @param object instance of a model to inspect
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* @return array Fields in table. Keys are name and type
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* @access public
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*/
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function describe(&$model) {
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$cache = parent::describe($model);
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if ($cache != null) {
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return $cache;
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}
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$sql = 'SELECT COLUMN_NAME, DATA_TYPE, DATA_LENGTH FROM user_tab_columns WHERE table_name = \'';
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$sql .= strtoupper($this->fullTableName($model)) . '\'';
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if (!$this->execute($sql)) {
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return false;
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}
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$fields = array();
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for($i=0; $row = $this->fetchRow(); $i++) {
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$fields[strtolower($row[0]['COLUMN_NAME'])] = array('type'=> $this->column($row[0]['DATA_TYPE']),
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'length'=> $row[0]['DATA_LENGTH']);
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}
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$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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* This method should quote Oracle identifiers. Well it doesn't.
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* It would break all scaffolding and all of Cake's default assumptions.
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*
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* @param unknown_type $var
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* @return unknown
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* @access public
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*/
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function name($var) {
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switch($var) {
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case '_create':
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case '_read':
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case '_update':
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case '_delete':
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return "\"$var\"";
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break;
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default:
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return $var;
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break;
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}
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}
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/**
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* Begin a transaction
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*
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* @param unknown_type $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions).
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*/
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function begin() {
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$this->__transactionStarted = true;
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return true;
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}
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/**
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* Rollback a transaction
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*
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* @param unknown_type $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions,
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* or a transaction has not started).
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*/
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function rollback() {
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return ocirollback($this->connection);
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}
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/**
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* Commit a transaction
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*
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* @param unknown_type $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions,
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* or a transaction has not started).
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*/
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function commit() {
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$this->__transactionStarted = false;
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return ocicommit($this->connection);
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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 $real Real database-layer column type (i.e. "varchar(255)")
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* @return string Abstract column type (i.e. "string")
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* @access public
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*/
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function column($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 $col;
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} else {
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$real = strtolower($real);
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}
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$col = r(')', '', $real);
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$limit = null;
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@list($col, $limit) = explode('(', $col);
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if (in_array($col, array('date', 'timestamp'))) {
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return $col;
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}
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if (strpos($col, 'number') !== false) {
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return 'integer';
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}
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if (strpos($col, 'integer') !== false) {
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return 'integer';
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}
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if (strpos($col, 'char') !== false) {
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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) {
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return 'binary';
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}
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if (in_array($col, array('float', 'double', 'decimal'))) {
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return 'float';
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}
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if ($col == 'boolean') {
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return $col;
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}
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return 'text';
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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 $data String to be prepared for use in an SQL statement
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* @return string Quoted and escaped
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* @access public
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*/
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function value($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) {
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return 'NULL';
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}
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if ($data === '') {
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return "''";
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}
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|
|
|
switch($column) {
|
|
case 'date':
|
|
$data = date('Y-m-d H:i:s', strtotime($data));
|
|
$data = "TO_DATE('$data', 'YYYY-MM-DD HH24:MI:SS')";
|
|
break;
|
|
case 'integer' :
|
|
case 'float' :
|
|
case null :
|
|
if (is_numeric($data)) {
|
|
break;
|
|
}
|
|
default:
|
|
$data = str_replace("'", "''", $data);
|
|
$data = "'$data'";
|
|
break;
|
|
}
|
|
return $data;
|
|
}
|
|
/**
|
|
* Returns the ID generated from the previous INSERT operation.
|
|
*
|
|
* @param string
|
|
* @return integer
|
|
* @access public
|
|
*/
|
|
function lastInsertId($source) {
|
|
$sequence = (!empty($this->sequence)) ? $this->sequence : $source . '_seq';
|
|
$sql = "SELECT $sequence.currval FROM dual";
|
|
|
|
if (!$this->execute($sql)) {
|
|
return false;
|
|
}
|
|
|
|
while($row = $this->fetchRow()) {
|
|
return $row[$sequence]['currval'];
|
|
}
|
|
return false;
|
|
}
|
|
/**
|
|
* Returns a formatted error message from previous database operation.
|
|
*
|
|
* @return string Error message with error number
|
|
* @access public
|
|
*/
|
|
function lastError() {
|
|
$errors = ocierror();
|
|
|
|
if (($errors != null) && (isset($errors["message"]))) {
|
|
return($errors["message"]);
|
|
}
|
|
return null;
|
|
}
|
|
/**
|
|
* Returns number of affected rows in previous database operation. If no previous operation exists, this returns false.
|
|
*
|
|
* @return int Number of affected rows
|
|
* @access public
|
|
*/
|
|
function lastAffected() {
|
|
return $this->_statementId ? ocirowcount($this->_statementId): false;
|
|
}
|
|
/**
|
|
* Inserts multiple values into a join table
|
|
*
|
|
* @param string $table
|
|
* @param string $fields
|
|
* @param array $values
|
|
*/
|
|
function insertMulti($table, $fields, $values) {
|
|
$count = count($values);
|
|
for ($x = 0; $x < $count; $x++) {
|
|
$this->query("INSERT INTO {$table} ({$fields}) VALUES {$values[$x]}");
|
|
}
|
|
}
|
|
}
|
|
?>
|