1
0
mirror of synced 2024-12-14 07:06:04 +03:00
doctrine2/lib/Doctrine/Adapter/Db2.php

334 lines
11 KiB
PHP
Raw Normal View History

2007-05-21 01:46:10 +04:00
<?php
/*
* $Id: Mock.php 1080 2007-02-10 18:17:08Z romanb $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.com>.
*/
Doctrine::autoload('Doctrine_Adapter');
/**
* Doctrine_Adapter_Db2
2007-05-21 01:51:10 +04:00
* IBM DB2 Adapter [BORROWED FROM ZEND FRAMEWORK]
2007-05-21 01:46:10 +04:00
*
* @package Doctrine
* @subpackage Adapter
2007-05-21 01:46:10 +04:00
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision: 1080 $
*/
class Doctrine_Adapter_Db2 extends Doctrine_Adapter
{
/**
* User-provided configuration.
*
* Basic keys are:
*
* username => (string) Connect to the database as this username.
* password => (string) Password associated with the username.
* host => (string) What host to connect to (default 127.0.0.1)
* dbname => (string) The name of the database to user
* protocol => (string) Protocol to use, defaults to "TCPIP"
* port => (integer) Port number to use for TCP/IP if protocol is "TCPIP"
* persistent => (boolean) Set TRUE to use a persistent connection (db2_pconnect)
*
* @var array
*/
protected $_config = array(
'dbname' => null,
'username' => null,
'password' => null,
'host' => 'localhost',
'port' => '50000',
'protocol' => 'TCPIP',
'persistent' => false
);
/**
* Execution mode
*
* @var int execution flag (DB2_AUTOCOMMIT_ON or DB2_AUTOCOMMIT_OFF)
* @access protected
*/
protected $_execute_mode = DB2_AUTOCOMMIT_ON;
/**
* Table name of the last accessed table for an insert operation
* This is a DB2-Adapter-specific member variable with the utmost
* probability you might not find it in other adapters...
*
* @var string
* @access protected
*/
protected $_lastInsertTable = null;
/**
* Constructor.
*
* $config is an array of key/value pairs containing configuration
* options. These options are common to most adapters:
*
* dbname => (string) The name of the database to user
* username => (string) Connect to the database as this username.
* password => (string) Password associated with the username.
* host => (string) What host to connect to, defaults to localhost
* port => (string) The port of the database, defaults to 50000
* persistent => (boolean) Whether to use a persistent connection or not, defaults to false
* protocol => (string) The network protocol, defaults to TCPIP
* options => (array) Other database options such as autocommit, case, and cursor options
*
* @param array $config An array of configuration keys.
*/
public function __construct(array $config)
{
if ( ! isset($config['password'])) {
throw new Doctrine_Adapter_Db2_Exception("Configuration array must have a key for 'password' for login credentials.");
}
if ( ! isset($config['username'])) {
throw new Doctrine_Adapter_Db2_Exception("Configuration array must have a key for 'username' for login credentials.");
}
if ( ! isset($config['dbname'])) {
throw new Doctrine_Adapter_Db2_Exception("Configuration array must have a key for 'dbname' that names the database instance.");
}
// keep the config
$this->_config = array_merge($this->_config, (array) $config);
// create a profiler object
$enabled = false;
if (array_key_exists('profiler', $this->_config)) {
$enabled = (bool) $this->_config['profiler'];
unset($this->_config['profiler']);
}
$this->_profiler = new Doctrine_Profiler($enabled);
}
/**
* Creates a connection resource.
*
* @return void
*/
protected function _connect()
{
if (is_resource($this->_connection)) {
// connection already exists
return;
}
if ( ! extension_loaded('ibm_db2')) {
throw new Doctrine_Adapter_Db2_Exception('The IBM DB2 extension is required for this adapter but not loaded');
}
if ($this->_config['persistent']) {
// use persistent connection
$conn_func_name = 'db2_pconnect';
} else {
// use "normal" connection
$conn_func_name = 'db2_connect';
}
if ( ! isset($this->_config['options'])) {
2007-05-21 01:46:10 +04:00
// config options were not set, so set it to an empty array
$this->_config['options'] = array();
}
if ( ! isset($this->_config['options']['autocommit'])) {
2007-05-21 01:46:10 +04:00
// set execution mode
$this->_config['options']['autocommit'] = &$this->_execute_mode;
}
if ($this->_config['host'] !== 'localhost') {
// if the host isn't localhost, use extended connection params
$dbname = 'DRIVER={IBM DB2 ODBC DRIVER}' .
';DATABASE=' . $this->_config['dbname'] .
';HOSTNAME=' . $this->_config['host'] .
';PORT=' . $this->_config['port'] .
';PROTOCOL=' . $this->_config['protocol'] .
';UID=' . $this->_config['username'] .
';PWD=' . $this->_config['password'] .';';
$this->_connection = $conn_func_name(
$dbname,
null,
null,
$this->_config['options']
);
} else {
// host is localhost, so use standard connection params
$this->_connection = $conn_func_name(
$this->_config['dbname'],
$this->_config['username'],
$this->_config['password'],
$this->_config['options']
);
}
// check the connection
if ( ! $this->_connection) {
2007-05-21 01:46:10 +04:00
throw new Doctrine_Adapter_Db2_Exception(db2_conn_errormsg(), db2_conn_error());
}
}
/**
* Force the connection to close.
*
* @return void
*/
public function closeConnection()
{
db2_close($this->_connection);
$this->_connection = null;
}
/**
* Returns an SQL statement for preparation.
*
* @param string $sql The SQL statement with placeholders.
* @return Doctrine_Statement_Db2
*/
public function prepare($sql)
{
$this->_connect();
$stmt = new Doctrine_Statement_Db2($this, $sql);
$stmt->setFetchMode($this->_fetchMode);
return $stmt;
}
/**
* Gets the execution mode
*
* @return int the execution mode (DB2_AUTOCOMMIT_ON or DB2_AUTOCOMMIT_OFF)
*/
public function _getExecuteMode()
{
return $this->_execute_mode;
}
/**
* @param integer $mode
* @return void
*/
public function _setExecuteMode($mode)
{
switch ($mode) {
case DB2_AUTOCOMMIT_OFF:
case DB2_AUTOCOMMIT_ON:
$this->_execute_mode = $mode;
db2_autocommit($this->_connection, $mode);
break;
default:
throw new Doctrine_Adapter_Db2_Exception("execution mode not supported");
break;
}
}
/**
* Quote a raw string.
*
* @param string $value Raw string
* @return string Quoted string
*/
protected function _quote($value)
{
/**
* Some releases of the IBM DB2 extension appear
* to be missing the db2_escape_string() method.
* The method was added in ibm_db2.c revision 1.53
* according to cvs.php.net. But the function is
* not present in my build of PHP 5.2.1.
*/
if (function_exists('db2_escape_string')) {
return db2_escape_string($value);
}
return parent::_quote($value);
}
/**
* @return string
*/
public function getQuoteIdentifierSymbol()
{
$info = db2_server_info($this->_connection);
$identQuote = $info->IDENTIFIER_QUOTE_CHAR;
return $identQuote;
}
2007-05-21 01:46:10 +04:00
/**
* Begin a transaction.
*
* @return void
*/
protected function _beginTransaction()
{
$this->_setExecuteMode(DB2_AUTOCOMMIT_OFF);
}
/**
* Commit a transaction.
*
* @return void
*/
protected function _commit()
{
if ( ! db2_commit($this->_connection)) {
2007-05-21 01:46:10 +04:00
throw new Doctrine_Adapter_Db2_Exception(
db2_conn_errormsg($this->_connection),
db2_conn_error($this->_connection));
}
$this->_setExecuteMode(DB2_AUTOCOMMIT_ON);
}
/**
* Rollback a transaction.
*
* @return void
*/
protected function _rollBack()
{
if ( ! db2_rollback($this->_connection)) {
2007-05-21 01:46:10 +04:00
throw new Doctrine_Adapter_Db2_Exception(
db2_conn_errormsg($this->_connection),
db2_conn_error($this->_connection));
}
$this->_setExecuteMode(DB2_AUTOCOMMIT_ON);
}
/**
* Set the fetch mode.
*
* @param integer $mode
* @return void
*/
public function setFetchMode($mode)
{
switch ($mode) {
case Doctrine::FETCH_NUM: // seq array
case Doctrine::FETCH_ASSOC: // assoc array
case Doctrine::FETCH_BOTH: // seq+assoc array
case Doctrine::FETCH_OBJ: // object
$this->_fetchMode = $mode;
break;
default:
throw new Doctrine_Adapter_Db2_Exception('Invalid fetch mode specified');
break;
}
}
}