mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-16 03:48:24 +00:00
551 lines
No EOL
14 KiB
PHP
551 lines
No EOL
14 KiB
PHP
<?php
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/* SVN FILE: $Id$ */
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/**
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* AdoDB 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 2005-2009, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2009, Cake Software Foundation, Inc. (http://www.cakefoundation.org)
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* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
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* @package cake
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* @subpackage cake.cake.libs.model.datasources.dbo
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* @since CakePHP(tm) v 0.2.9
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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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* Include AdoDB files.
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*/
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App::import('Vendor', 'NewADOConnection', array('file' => 'adodb' . DS . 'adodb.inc.php'));
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/**
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* AdoDB DBO implementation.
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*
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* Database abstraction implementation for the AdoDB library.
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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 DboAdodb extends DboSource {
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/**
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* Enter description here...
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*
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* @var string
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*/
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var $description = "ADOdb DBO Driver";
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/**
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* ADOConnection object with which we connect.
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*
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* @var ADOConnection The connection object.
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* @access private
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*/
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var $_adodb = null;
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/**
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* Array translating ADOdb column MetaTypes to cake-supported metatypes
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*
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* @var array
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* @access private
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*/
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var $_adodbColumnTypes = array(
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'string' => 'C',
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'text' => 'X',
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'date' => 'D',
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'timestamp' => 'T',
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'time' => 'T',
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'datetime' => 'T',
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'boolean' => 'L',
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'float' => 'N',
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'integer' => 'I',
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'binary' => 'R',
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);
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/**
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* ADOdb 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' => 'R', 'limit' => 11),
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'string' => array('name' => 'C', 'limit' => '255'),
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'text' => array('name' => 'X'),
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'integer' => array('name' => 'I', 'limit' => '11', 'formatter' => 'intval'),
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'float' => array('name' => 'N', 'formatter' => 'floatval'),
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'timestamp' => array('name' => 'T', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'time' => array('name' => 'T', 'format' => 'H:i:s', 'formatter' => 'date'),
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'datetime' => array('name' => 'T', 'format' => 'Y-m-d H:i:s', 'formatter' => 'date'),
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'date' => array('name' => 'D', 'format' => 'Y-m-d', 'formatter' => 'date'),
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'binary' => array('name' => 'B'),
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'boolean' => array('name' => 'L', 'limit' => '1')
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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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* @param array $config Configuration array for connecting
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*/
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function connect() {
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$config = $this->config;
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$persistent = strrpos($config['connect'], '|p');
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if ($persistent === false) {
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$adodb_driver = $config['connect'];
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$connect = 'Connect';
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} else {
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$adodb_driver = substr($config['connect'], 0, $persistent);
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$connect = 'PConnect';
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}
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if (!$this->enabled()) {
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return false;
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}
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$this->_adodb = NewADOConnection($adodb_driver);
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$this->_adodbDataDict = NewDataDictionary($this->_adodb, $adodb_driver);
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$this->startQuote = $this->_adodb->nameQuote;
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$this->endQuote = $this->_adodb->nameQuote;
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$this->connected = $this->_adodb->$connect($config['host'], $config['login'], $config['password'], $config['database']);
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$this->_adodbMetatyper = &$this->_adodb->execute('Select 1');
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return $this->connected;
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}
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/**
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* Check that AdoDB is available.
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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 function_exists('NewADOConnection');
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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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return $this->_adodb->Close();
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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 $sql SQL statement
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* @return resource Result resource identifier
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*/
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function _execute($sql) {
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global $ADODB_FETCH_MODE;
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$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
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return $this->_adodb->execute($sql);
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}
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/**
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* Returns a row from current resultset as an array .
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*
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* @return array The fetched row as an array
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*/
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function fetchRow($sql = null) {
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if (!empty($sql) && is_string($sql) && strlen($sql) > 5) {
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if (!$this->execute($sql)) {
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return null;
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}
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}
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if (!$this->hasResult()) {
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return null;
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} else {
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$resultRow = $this->_result->FetchRow();
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$this->resultSet($resultRow);
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return $this->fetchResult();
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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 $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions).
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*/
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function begin(&$model) {
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if (parent::begin($model)) {
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if ($this->_adodb->BeginTrans()) {
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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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return false;
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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 $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions,
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* or a transaction has not started).
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*/
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function commit(&$model) {
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if (parent::commit($model)) {
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$this->_transactionStarted = false;
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return $this->_adodb->CommitTrans();
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}
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return false;
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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 $model
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* @return boolean True on success, false on fail
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* (i.e. if the database/model does not support transactions,
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* or a transaction has not started).
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*/
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function rollback(&$model) {
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if (parent::rollback($model)) {
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return $this->_adodb->RollbackTrans();
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}
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return false;
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}
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/**
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* Returns an array of tables in the database. If there are no tables, an error is raised and the application exits.
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*
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* @return array Array of tablenames in the database
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*/
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function listSources() {
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$tables = $this->_adodb->MetaTables('TABLES');
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if (!sizeof($tables) > 0) {
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trigger_error(ERROR_NO_TABLE_LIST, E_USER_NOTICE);
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exit;
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}
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return $tables;
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}
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/**
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* Returns an array of the fields in the table used by the given model.
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*
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* @param AppModel $model Model object
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* @return array Fields in table. Keys are name and type
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*/
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function describe(&$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 = $this->_adodb->MetaColumns($this->fullTableName($model, false));
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foreach ($cols as $column) {
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$fields[$column->name] = array(
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'type' => $this->column($column->type),
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'null' => !$column->not_null,
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'length' => $column->max_length,
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);
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if ($column->has_default) {
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$fields[$column->name]['default'] = $column->default_value;
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}
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if ($column->primary_key == 1) {
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$fields[$column->name]['key'] = 'primary';
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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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* Returns a formatted error message from previous database operation.
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*
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* @return string Error message
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*/
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function lastError() {
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return $this->_adodb->ErrorMsg();
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}
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/**
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* Returns number of affected rows in previous database operation, or false if no previous operation exists.
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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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return $this->_adodb->Affected_Rows();
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}
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/**
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* Returns number of rows in previous resultset, or false if no previous resultset exists.
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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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return $this->_result ? $this->_result->RecordCount() : false;
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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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* @return int
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*
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* @Returns the last autonumbering ID inserted. Returns false if function not supported.
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*/
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function lastInsertId() {
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return $this->_adodb->Insert_ID();
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}
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/**
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* Returns a LIMIT statement in the correct format for the particular database.
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*
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* @param integer $limit Limit of results returned
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* @param integer $offset Offset from which to start results
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* @return string SQL limit/offset statement
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* @todo Please change output string to whatever select your database accepts. adodb doesn't allow us to get the correct limit string out of it.
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*/
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function limit($limit, $offset = null) {
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if ($limit) {
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$rt = '';
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if (!strpos(strtolower($limit), 'limit') || strpos(strtolower($limit), 'limit') === 0) {
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$rt = ' LIMIT';
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}
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if ($offset) {
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$rt .= ' ' . $offset . ',';
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}
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$rt .= ' ' . $limit;
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return $rt;
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}
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return null;
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// please change to whatever select your database accepts
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// adodb doesn't allow us to get the correct limit string out of it
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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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$metaTypes = array_flip($this->_adodbColumnTypes);
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$interpreted_type = $this->_adodbMetatyper->MetaType($real);
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if (!isset($metaTypes[$interpreted_type])) {
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return 'text';
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}
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return $metaTypes[$interpreted_type];
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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_type The type of 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) {
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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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return $this->_adodb->qstr($data);
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}
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/**
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* Generates the fields list of an SQL query.
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*
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* @param Model $model
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* @param string $alias Alias tablename
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* @param mixed $fields
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* @return array
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*/
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function fields(&$model, $alias = null, $fields = array(), $quote = true) {
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if (empty($alias)) {
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$alias = $model->alias;
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}
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$fields = parent::fields($model, $alias, $fields, false);
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if (!$quote) {
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return $fields;
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}
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$count = count($fields);
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if ($count >= 1 && $fields[0] != '*' && strpos($fields[0], 'COUNT(*)') === false) {
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for ($i = 0; $i < $count; $i++) {
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if (!preg_match('/^.+\\(.*\\)/', $fields[$i]) && !preg_match('/\s+AS\s+/', $fields[$i])) {
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$prepend = '';
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if (strpos($fields[$i], 'DISTINCT') !== false) {
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$prepend = 'DISTINCT ';
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$fields[$i] = trim(str_replace('DISTINCT', '', $fields[$i]));
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}
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if (strrpos($fields[$i], '.') === false) {
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$fields[$i] = $prepend . $this->name($alias) . '.' . $this->name($fields[$i]) . ' AS ' . $this->name($alias . '__' . $fields[$i]);
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} else {
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$build = explode('.', $fields[$i]);
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$fields[$i] = $prepend . $this->name($build[0]) . '.' . $this->name($build[1]) . ' AS ' . $this->name($build[0] . '__' . $build[1]);
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}
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}
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}
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}
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return $fields;
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}
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/**
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* Build ResultSets and map data
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*
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* @param array $results
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*/
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function resultSet(&$results) {
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$num_fields = count($results);
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$fields = array_keys($results);
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$this->results =& $results;
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$this->map = array();
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$index = 0;
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$j = 0;
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while ($j < $num_fields) {
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$columnName = $fields[$j];
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if (strpos($columnName, '__')) {
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$parts = explode('__', $columnName);
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$this->map[$index++] = array($parts[0], $parts[1]);
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} else {
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$this->map[$index++] = array(0, $columnName);
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}
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$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 (!empty($this->results)) {
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$row = $this->results;
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$this->results = null;
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} else {
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$row = $this->_result->FetchRow();
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}
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if (empty($row)) {
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return false;
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}
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$resultRow = array();
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$fields = array_keys($row);
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$count = count($fields);
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$i = 0;
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for ($i = 0; $i < $count; $i++) { //$row as $index => $field) {
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list($table, $column) = $this->map[$i];
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$resultRow[$table][$column] = $row[$fields[$i]];
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}
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return $resultRow;
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}
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/**
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* Generate a database-native column schema string
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*
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* @param array $column An array structured like the following: array('name'=>'value', 'type'=>'value'[, options]),
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* where options can be 'default', 'length', or 'key'.
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* @return string
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*/
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function buildColumn($column) {
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$name = $type = null;
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extract(array_merge(array('null' => true), $column));
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if (empty($name) || empty($type)) {
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trigger_error('Column name or type not defined in schema', E_USER_WARNING);
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return null;
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}
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//$metaTypes = array_flip($this->_adodbColumnTypes);
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if (!isset($this->_adodbColumnTypes[$type])) {
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trigger_error("Column type {$type} does not exist", E_USER_WARNING);
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return null;
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}
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$metaType = $this->_adodbColumnTypes[$type];
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$concreteType = $this->_adodbDataDict->ActualType($metaType);
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$real = $this->columns[$type];
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//UUIDs are broken so fix them.
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if ($type == 'string' && isset($real['length']) && $real['length'] == 36) {
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$concreteType = 'CHAR';
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}
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$out = $this->name($name) . ' ' . $concreteType;
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if (isset($real['limit']) || isset($real['length']) || isset($column['limit']) || isset($column['length'])) {
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if (isset($column['length'])) {
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$length = $column['length'];
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} elseif (isset($column['limit'])) {
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$length = $column['limit'];
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} elseif (isset($real['length'])) {
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$length = $real['length'];
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} else {
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$length = $real['limit'];
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}
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$out .= '(' . $length . ')';
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}
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$_notNull = $_default = $_autoInc = $_constraint = $_unsigned = false;
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if (isset($column['key']) && $column['key'] == 'primary' && $type == 'integer') {
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$_constraint = '';
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$_autoInc = true;
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} elseif (isset($column['key']) && $column['key'] == 'primary') {
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$_notNull = '';
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} elseif (isset($column['default']) && isset($column['null']) && $column['null'] == false) {
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$_notNull = true;
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$_default = $column['default'];
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} elseif ( isset($column['null']) && $column['null'] == true) {
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$_notNull = false;
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$_default = 'NULL';
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}
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if (isset($column['default']) && $_default == false) {
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$_default = $this->value($column['default']);
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}
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if (isset($column['null']) && $column['null'] == false) {
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$_notNull = true;
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}
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//use concrete instance of DataDict to make the suffixes for us.
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$out .= $this->_adodbDataDict->_CreateSuffix($out, $metaType, $_notNull, $_default, $_autoInc, $_constraint, $_unsigned);
|
|
return $out;
|
|
|
|
}
|
|
|
|
/**
|
|
* Checks if the result is valid
|
|
*
|
|
* @return boolean True if the result is valid, else false
|
|
*/
|
|
function hasResult() {
|
|
return is_object($this->_result) && !$this->_result->EOF;
|
|
}
|
|
}
|
|
?>
|