mirror of
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663 lines
21 KiB
PHP
663 lines
21 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @see Zend_Db_Adapter_Abstract
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*/
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/**
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* @see Zend_Db_Statement_Sqlsrv
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*/
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/**
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* @category Zend
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* @package Zend_Db
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* @subpackage Adapter
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* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Db_Adapter_Sqlsrv extends Zend_Db_Adapter_Abstract
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{
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/**
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* User-provided configuration.
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*
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* Basic keys are:
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*
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* username => (string) Connect to the database as this username.
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* password => (string) Password associated with the username.
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* dbname => The name of the local SQL Server instance
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*
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* @var array
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*/
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protected $_config = array(
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'dbname' => null,
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'username' => null,
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'password' => null,
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);
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/**
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* Last insert id from INSERT query
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*
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* @var int
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*/
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protected $_lastInsertId;
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/**
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* Query used to fetch last insert id
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*
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* @var string
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*/
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protected $_lastInsertSQL = 'SELECT SCOPE_IDENTITY() as Current_Identity';
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/**
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* Keys are UPPERCASE SQL datatypes or the constants
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* Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
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*
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* Values are:
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* 0 = 32-bit integer
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* 1 = 64-bit integer
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* 2 = float or decimal
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*
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* @var array Associative array of datatypes to values 0, 1, or 2.
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*/
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protected $_numericDataTypes = array(
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Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
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Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
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Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
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'INT' => Zend_Db::INT_TYPE,
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'SMALLINT' => Zend_Db::INT_TYPE,
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'TINYINT' => Zend_Db::INT_TYPE,
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'BIGINT' => Zend_Db::BIGINT_TYPE,
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'DECIMAL' => Zend_Db::FLOAT_TYPE,
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'FLOAT' => Zend_Db::FLOAT_TYPE,
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'MONEY' => Zend_Db::FLOAT_TYPE,
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'NUMERIC' => Zend_Db::FLOAT_TYPE,
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'REAL' => Zend_Db::FLOAT_TYPE,
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'SMALLMONEY' => Zend_Db::FLOAT_TYPE,
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);
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/**
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* Default class name for a DB statement.
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*
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* @var string
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*/
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protected $_defaultStmtClass = 'Zend_Db_Statement_Sqlsrv';
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/**
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* Creates a connection resource.
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*
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* @return void
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* @throws Zend_Db_Adapter_Sqlsrv_Exception
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*/
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protected function _connect()
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{
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if (is_resource($this->_connection)) {
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// connection already exists
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return;
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}
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if (!extension_loaded('sqlsrv')) {
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/**
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* @see Zend_Db_Adapter_Sqlsrv_Exception
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*/
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throw new Zend_Db_Adapter_Sqlsrv_Exception('The Sqlsrv extension is required for this adapter but the extension is not loaded');
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}
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$serverName = $this->_config['host'];
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if (isset($this->_config['port'])) {
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$port = (integer) $this->_config['port'];
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$serverName .= ', ' . $port;
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}
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$connectionInfo = array(
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'Database' => $this->_config['dbname'],
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);
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if (isset($this->_config['username']) && isset($this->_config['password']))
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{
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$connectionInfo += array(
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'UID' => $this->_config['username'],
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'PWD' => $this->_config['password'],
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);
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}
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// else - windows authentication
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if (!empty($this->_config['driver_options'])) {
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foreach ($this->_config['driver_options'] as $option => $value) {
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// A value may be a constant.
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if (is_string($value)) {
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$constantName = strtoupper($value);
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if (defined($constantName)) {
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$connectionInfo[$option] = constant($constantName);
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} else {
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$connectionInfo[$option] = $value;
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}
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}
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}
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}
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$this->_connection = sqlsrv_connect($serverName, $connectionInfo);
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if (!$this->_connection) {
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/**
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* @see Zend_Db_Adapter_Sqlsrv_Exception
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*/
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throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
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}
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}
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/**
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* Check for config options that are mandatory.
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* Throw exceptions if any are missing.
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*
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* @param array $config
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* @throws Zend_Db_Adapter_Exception
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*/
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protected function _checkRequiredOptions(array $config)
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{
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// we need at least a dbname
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if (! array_key_exists('dbname', $config)) {
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/** @see Zend_Db_Adapter_Exception */
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throw new Zend_Db_Adapter_Exception("Configuration array must have a key for 'dbname' that names the database instance");
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}
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if (! array_key_exists('password', $config) && array_key_exists('username', $config)) {
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/**
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* @see Zend_Db_Adapter_Exception
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*/
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throw new Zend_Db_Adapter_Exception("Configuration array must have a key for 'password' for login credentials.
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If Windows Authentication is desired, both keys 'username' and 'password' should be ommited from config.");
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}
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if (array_key_exists('password', $config) && !array_key_exists('username', $config)) {
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/**
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* @see Zend_Db_Adapter_Exception
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*/
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throw new Zend_Db_Adapter_Exception("Configuration array must have a key for 'username' for login credentials.
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If Windows Authentication is desired, both keys 'username' and 'password' should be ommited from config.");
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}
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}
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/**
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* Set the transaction isoltion level.
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*
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* @param integer|null $level A fetch mode from SQLSRV_TXN_*.
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* @return true
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* @throws Zend_Db_Adapter_Sqlsrv_Exception
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*/
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public function setTransactionIsolationLevel($level = null)
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{
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$this->_connect();
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$sql = null;
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// Default transaction level in sql server
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if ($level === null)
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{
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$level = SQLSRV_TXN_READ_COMMITTED;
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}
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switch ($level) {
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case SQLSRV_TXN_READ_UNCOMMITTED:
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$sql = "READ UNCOMMITTED";
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break;
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case SQLSRV_TXN_READ_COMMITTED:
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$sql = "READ COMMITTED";
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break;
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case SQLSRV_TXN_REPEATABLE_READ:
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$sql = "REPEATABLE READ";
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break;
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case SQLSRV_TXN_SNAPSHOT:
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$sql = "SNAPSHOT";
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break;
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case SQLSRV_TXN_SERIALIZABLE:
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$sql = "SERIALIZABLE";
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break;
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default:
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throw new Zend_Db_Adapter_Sqlsrv_Exception("Invalid transaction isolation level mode '$level' specified");
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}
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if (!sqlsrv_query($this->_connection, "SET TRANSACTION ISOLATION LEVEL $sql;")) {
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throw new Zend_Db_Adapter_Sqlsrv_Exception("Transaction cannot be changed to '$level'");
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}
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return true;
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}
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/**
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* Test if a connection is active
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*
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* @return boolean
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*/
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public function isConnected()
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{
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return (is_resource($this->_connection)
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&& (get_resource_type($this->_connection) == 'SQL Server Connection')
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);
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}
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/**
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* Force the connection to close.
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*
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* @return void
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*/
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public function closeConnection()
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{
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if ($this->isConnected()) {
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sqlsrv_close($this->_connection);
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}
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$this->_connection = null;
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}
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/**
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* Returns an SQL statement for preparation.
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*
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* @param string $sql The SQL statement with placeholders.
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* @return Zend_Db_Statement_Sqlsrv
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*/
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public function prepare($sql)
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{
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$this->_connect();
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$stmtClass = $this->_defaultStmtClass;
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if (!class_exists($stmtClass)) {
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/**
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* @see Zend_Loader
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*/
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Zend_Loader::loadClass($stmtClass);
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}
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$stmt = new $stmtClass($this, $sql);
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$stmt->setFetchMode($this->_fetchMode);
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return $stmt;
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}
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/**
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* Quote a raw string.
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*
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* @param string $value Raw string
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* @return string Quoted string
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*/
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protected function _quote($value)
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{
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if (is_int($value)) {
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return $value;
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} elseif (is_float($value)) {
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return sprintf('%F', $value);
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}
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$value = addcslashes($value, "\000\032");
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return "'" . str_replace("'", "''", $value) . "'";
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}
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/**
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* Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
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*
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* As a convention, on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence
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* from the arguments and returns the last id generated by that sequence.
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* On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method
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* returns the last value generated for such a column, and the table name
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* argument is disregarded.
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*
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* @param string $tableName OPTIONAL Name of table.
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* @param string $primaryKey OPTIONAL Name of primary key column.
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* @return string
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*/
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public function lastInsertId($tableName = null, $primaryKey = null)
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{
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if ($tableName) {
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$tableName = $this->quote($tableName);
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$sql = 'SELECT IDENT_CURRENT (' . $tableName . ') as Current_Identity';
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return (string) $this->fetchOne($sql);
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}
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if ($this->_lastInsertId > 0) {
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return (string) $this->_lastInsertId;
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}
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$sql = $this->_lastInsertSQL;
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return (string) $this->fetchOne($sql);
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}
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/**
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* Inserts a table row with specified data.
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*
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* @param mixed $table The table to insert data into.
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* @param array $bind Column-value pairs.
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* @return int The number of affected rows.
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*/
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public function insert($table, array $bind)
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{
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// extract and quote col names from the array keys
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$cols = array();
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$vals = array();
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foreach ($bind as $col => $val) {
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$cols[] = $this->quoteIdentifier($col, true);
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if ($val instanceof Zend_Db_Expr) {
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$vals[] = $val->__toString();
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unset($bind[$col]);
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} else {
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$vals[] = '?';
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}
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}
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// build the statement
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$sql = "INSERT INTO "
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. $this->quoteIdentifier($table, true)
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. ' (' . implode(', ', $cols) . ') '
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. 'VALUES (' . implode(', ', $vals) . ')'
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. ' ' . $this->_lastInsertSQL;
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// execute the statement and return the number of affected rows
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$stmt = $this->query($sql, array_values($bind));
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$result = $stmt->rowCount();
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$stmt->nextRowset();
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$this->_lastInsertId = $stmt->fetchColumn();
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return $result;
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}
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/**
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* Returns a list of the tables in the database.
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*
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* @return array
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*/
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public function listTables()
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{
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$this->_connect();
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$sql = "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";
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return $this->fetchCol($sql);
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}
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/**
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* Returns the column descriptions for a table.
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*
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* The return value is an associative array keyed by the column name,
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* as returned by the RDBMS.
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*
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* The value of each array element is an associative array
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* with the following keys:
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*
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* SCHEMA_NAME => string; name of schema
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* TABLE_NAME => string;
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* COLUMN_NAME => string; column name
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* COLUMN_POSITION => number; ordinal position of column in table
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* DATA_TYPE => string; SQL datatype name of column
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* DEFAULT => string; default expression of column, null if none
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* NULLABLE => boolean; true if column can have nulls
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* LENGTH => number; length of CHAR/VARCHAR
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* SCALE => number; scale of NUMERIC/DECIMAL
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* PRECISION => number; precision of NUMERIC/DECIMAL
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* UNSIGNED => boolean; unsigned property of an integer type
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* PRIMARY => boolean; true if column is part of the primary key
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* PRIMARY_POSITION => integer; position of column in primary key
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* IDENTITY => integer; true if column is auto-generated with unique values
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*
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* @todo Discover integer unsigned property.
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*
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* @param string $tableName
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* @param string $schemaName OPTIONAL
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* @return array
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*/
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public function describeTable($tableName, $schemaName = null)
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{
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/**
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* Discover metadata information about this table.
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*/
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$sql = "exec sp_columns @table_name = " . $this->quoteIdentifier($tableName, true);
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$stmt = $this->query($sql);
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$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
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// ZF-7698
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$stmt->closeCursor();
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if (count($result) == 0) {
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return array();
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}
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$owner = 1;
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$table_name = 2;
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$column_name = 3;
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$type_name = 5;
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$precision = 6;
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$length = 7;
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$scale = 8;
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$nullable = 10;
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$column_def = 12;
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$column_position = 16;
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/**
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* Discover primary key column(s) for this table.
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*/
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$tableOwner = $result[0][$owner];
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$sql = "exec sp_pkeys @table_owner = " . $tableOwner
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. ", @table_name = " . $this->quoteIdentifier($tableName, true);
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$stmt = $this->query($sql);
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$primaryKeysResult = $stmt->fetchAll(Zend_Db::FETCH_NUM);
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$primaryKeyColumn = array();
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// Per http://msdn.microsoft.com/en-us/library/ms189813.aspx,
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// results from sp_keys stored procedure are:
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// 0=TABLE_QUALIFIER 1=TABLE_OWNER 2=TABLE_NAME 3=COLUMN_NAME 4=KEY_SEQ 5=PK_NAME
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$pkey_column_name = 3;
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$pkey_key_seq = 4;
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foreach ($primaryKeysResult as $pkeysRow) {
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$primaryKeyColumn[$pkeysRow[$pkey_column_name]] = $pkeysRow[$pkey_key_seq];
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}
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$desc = array();
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$p = 1;
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foreach ($result as $key => $row) {
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$identity = false;
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$words = explode(' ', $row[$type_name], 2);
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if (isset($words[0])) {
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$type = $words[0];
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if (isset($words[1])) {
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$identity = (bool) preg_match('/identity/', $words[1]);
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}
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}
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$isPrimary = array_key_exists($row[$column_name], $primaryKeyColumn);
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if ($isPrimary) {
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$primaryPosition = $primaryKeyColumn[$row[$column_name]];
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} else {
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$primaryPosition = null;
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}
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$desc[$this->foldCase($row[$column_name])] = array(
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'SCHEMA_NAME' => null, // @todo
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'TABLE_NAME' => $this->foldCase($row[$table_name]),
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'COLUMN_NAME' => $this->foldCase($row[$column_name]),
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'COLUMN_POSITION' => (int) $row[$column_position],
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'DATA_TYPE' => $type,
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'DEFAULT' => $row[$column_def],
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'NULLABLE' => (bool) $row[$nullable],
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'LENGTH' => $row[$length],
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'SCALE' => $row[$scale],
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'PRECISION' => $row[$precision],
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'UNSIGNED' => null, // @todo
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'PRIMARY' => $isPrimary,
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'PRIMARY_POSITION' => $primaryPosition,
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'IDENTITY' => $identity,
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);
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}
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return $desc;
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}
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/**
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* Leave autocommit mode and begin a transaction.
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*
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* @return void
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* @throws Zend_Db_Adapter_Sqlsrv_Exception
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*/
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protected function _beginTransaction()
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{
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if (!sqlsrv_begin_transaction($this->_connection)) {
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throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
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}
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}
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/**
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* Commit a transaction and return to autocommit mode.
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*
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* @return void
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* @throws Zend_Db_Adapter_Sqlsrv_Exception
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*/
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protected function _commit()
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{
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if (!sqlsrv_commit($this->_connection)) {
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throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
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}
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}
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/**
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* Roll back a transaction and return to autocommit mode.
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*
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* @return void
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* @throws Zend_Db_Adapter_Sqlsrv_Exception
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*/
|
|
protected function _rollBack()
|
|
{
|
|
if (!sqlsrv_rollback($this->_connection)) {
|
|
throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the fetch mode.
|
|
*
|
|
* @todo Support FETCH_CLASS and FETCH_INTO.
|
|
*
|
|
* @param integer $mode A fetch mode.
|
|
* @return void
|
|
* @throws Zend_Db_Adapter_Sqlsrv_Exception
|
|
*/
|
|
public function setFetchMode($mode)
|
|
{
|
|
switch ($mode) {
|
|
case Zend_Db::FETCH_NUM: // seq array
|
|
case Zend_Db::FETCH_ASSOC: // assoc array
|
|
case Zend_Db::FETCH_BOTH: // seq+assoc array
|
|
case Zend_Db::FETCH_OBJ: // object
|
|
$this->_fetchMode = $mode;
|
|
break;
|
|
case Zend_Db::FETCH_BOUND: // bound to PHP variable
|
|
throw new Zend_Db_Adapter_Sqlsrv_Exception('FETCH_BOUND is not supported yet');
|
|
break;
|
|
default:
|
|
throw new Zend_Db_Adapter_Sqlsrv_Exception("Invalid fetch mode '$mode' specified");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds an adapter-specific LIMIT clause to the SELECT statement.
|
|
*
|
|
* @param string $sql
|
|
* @param integer $count
|
|
* @param integer $offset OPTIONAL
|
|
* @return string
|
|
* @throws Zend_Db_Adapter_Sqlsrv_Exception
|
|
*/
|
|
public function limit($sql, $count, $offset = 0)
|
|
{
|
|
$count = intval($count);
|
|
if ($count <= 0) {
|
|
throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid");
|
|
}
|
|
|
|
$offset = intval($offset);
|
|
if ($offset < 0) {
|
|
/** @see Zend_Db_Adapter_Exception */
|
|
throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid");
|
|
}
|
|
|
|
if ($offset == 0) {
|
|
$sql = preg_replace('/^SELECT\s/i', 'SELECT TOP ' . $count . ' ', $sql);
|
|
} else {
|
|
$orderby = stristr($sql, 'ORDER BY');
|
|
|
|
if (!$orderby) {
|
|
$over = 'ORDER BY (SELECT 0)';
|
|
} else {
|
|
$over = preg_replace('/\"[^,]*\".\"([^,]*)\"/i', '"inner_tbl"."$1"', $orderby);
|
|
}
|
|
|
|
// Remove ORDER BY clause from $sql
|
|
$sql = preg_replace('/\s+ORDER BY(.*)/', '', $sql);
|
|
|
|
// Add ORDER BY clause as an argument for ROW_NUMBER()
|
|
$sql = "SELECT ROW_NUMBER() OVER ($over) AS \"ZEND_DB_ROWNUM\", * FROM ($sql) AS inner_tbl";
|
|
|
|
$start = $offset + 1;
|
|
|
|
if ($count == PHP_INT_MAX) {
|
|
$sql = "WITH outer_tbl AS ($sql) SELECT * FROM outer_tbl WHERE \"ZEND_DB_ROWNUM\" >= $start";
|
|
}
|
|
else {
|
|
$end = $offset + $count;
|
|
$sql = "WITH outer_tbl AS ($sql) SELECT * FROM outer_tbl WHERE \"ZEND_DB_ROWNUM\" BETWEEN $start AND $end";
|
|
}
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Check if the adapter supports real SQL parameters.
|
|
*
|
|
* @param string $type 'positional' or 'named'
|
|
* @return bool
|
|
*/
|
|
public function supportsParameters($type)
|
|
{
|
|
if ($type == 'positional') {
|
|
return true;
|
|
}
|
|
|
|
// if its 'named' or anything else
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Retrieve server version in PHP style
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getServerVersion()
|
|
{
|
|
$this->_connect();
|
|
$serverInfo = sqlsrv_server_info($this->_connection);
|
|
|
|
if ($serverInfo !== false) {
|
|
return $serverInfo['SQLServerVersion'];
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|