361 lines
12 KiB
PHP
361 lines
12 KiB
PHP
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<?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) 2005-2009 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: Ibm.php 16203 2009-06-21 18:56:17Z thomas $
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*/
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/** @see Zend_Db_Adapter_Pdo_Abstract */
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require_once 'Zend/Db/Adapter/Pdo/Abstract.php';
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/** @see Zend_Db_Abstract_Pdo_Ibm_Db2 */
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require_once 'Zend/Db/Adapter/Pdo/Ibm/Db2.php';
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/** @see Zend_Db_Abstract_Pdo_Ibm_Ids */
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require_once 'Zend/Db/Adapter/Pdo/Ibm/Ids.php';
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/** @see Zend_Db_Statement_Pdo_Ibm */
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require_once 'Zend/Db/Statement/Pdo/Ibm.php';
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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) 2005-2009 Zend Technologies 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_Pdo_Ibm extends Zend_Db_Adapter_Pdo_Abstract
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{
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/**
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* PDO type.
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*
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* @var string
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*/
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protected $_pdoType = 'ibm';
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/**
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* The IBM data server connected to
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*
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* @var string
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*/
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protected $_serverType = null;
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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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'INTEGER' => Zend_Db::INT_TYPE,
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'SMALLINT' => 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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'DEC' => Zend_Db::FLOAT_TYPE,
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'REAL' => Zend_Db::FLOAT_TYPE,
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'NUMERIC' => Zend_Db::FLOAT_TYPE,
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'DOUBLE PRECISION' => Zend_Db::FLOAT_TYPE,
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'FLOAT' => Zend_Db::FLOAT_TYPE
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);
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/**
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* Creates a PDO object and connects to the database.
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*
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* The IBM data server is set.
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* Current options are DB2 or IDS
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* @todo also differentiate between z/OS and i/5
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*
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* @return void
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* @throws Zend_Db_Adapter_Exception
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*/
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public function _connect()
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{
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if ($this->_connection) {
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return;
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}
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parent::_connect();
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$this->getConnection()->setAttribute(Zend_Db::ATTR_STRINGIFY_FETCHES, true);
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try {
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if ($this->_serverType === null) {
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$server = substr($this->getConnection()->getAttribute(PDO::ATTR_SERVER_INFO), 0, 3);
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switch ($server) {
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case 'DB2':
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$this->_serverType = new Zend_Db_Adapter_Pdo_Ibm_Db2($this);
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// Add DB2-specific numeric types
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$this->_numericDataTypes['DECFLOAT'] = Zend_Db::FLOAT_TYPE;
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$this->_numericDataTypes['DOUBLE'] = Zend_Db::FLOAT_TYPE;
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$this->_numericDataTypes['NUM'] = Zend_Db::FLOAT_TYPE;
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break;
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case 'IDS':
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$this->_serverType = new Zend_Db_Adapter_Pdo_Ibm_Ids($this);
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// Add IDS-specific numeric types
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$this->_numericDataTypes['SERIAL'] = Zend_Db::INT_TYPE;
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$this->_numericDataTypes['SERIAL8'] = Zend_Db::BIGINT_TYPE;
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$this->_numericDataTypes['INT8'] = Zend_Db::BIGINT_TYPE;
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$this->_numericDataTypes['SMALLFLOAT'] = Zend_Db::FLOAT_TYPE;
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$this->_numericDataTypes['MONEY'] = Zend_Db::FLOAT_TYPE;
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break;
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}
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}
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} catch (PDOException $e) {
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/** @see Zend_Db_Adapter_Exception */
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require_once 'Zend/Db/Adapter/Exception.php';
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$error = strpos($e->getMessage(), 'driver does not support that attribute');
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if ($error) {
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throw new Zend_Db_Adapter_Exception("PDO_IBM driver extension is downlevel. Please use driver release version 1.2.1 or later");
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} else {
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throw new Zend_Db_Adapter_Exception($e->getMessage());
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}
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}
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}
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/**
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* Creates a PDO DSN for the adapter from $this->_config settings.
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*
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* @return string
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*/
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protected function _dsn()
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{
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$this->_checkRequiredOptions($this->_config);
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// check if using full connection string
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if (array_key_exists('host', $this->_config)) {
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$dsn = ';DATABASE=' . $this->_config['dbname']
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. ';HOSTNAME=' . $this->_config['host']
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. ';PORT=' . $this->_config['port']
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// PDO_IBM supports only DB2 TCPIP protocol
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. ';PROTOCOL=' . 'TCPIP;';
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} else {
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// catalogued connection
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$dsn = $this->_config['dbname'];
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}
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return $this->_pdoType . ': ' . $dsn;
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}
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/**
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* Checks required options
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*
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* @param array $config
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* @throws Zend_Db_Adapter_Exception
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* @return void
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*/
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protected function _checkRequiredOptions(array $config)
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{
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parent::_checkRequiredOptions($config);
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if (array_key_exists('host', $this->_config) &&
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!array_key_exists('port', $config)) {
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/** @see Zend_Db_Adapter_Exception */
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require_once 'Zend/Db/Adapter/Exception.php';
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throw new Zend_Db_Adapter_Exception("Configuration must have a key for 'port' when 'host' is specified");
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}
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}
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/**
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* Prepares an SQL statement.
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*
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* @param string $sql The SQL statement with placeholders.
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* @param array $bind An array of data to bind to the placeholders.
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* @return PDOStatement
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*/
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public function prepare($sql)
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{
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$this->_connect();
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$stmtClass = $this->_defaultStmtClass;
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$stmt = new $stmtClass($this, $sql);
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$stmt->setFetchMode($this->_fetchMode);
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return $stmt;
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}
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/**
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* Returns a list of the tables in the database.
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*
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* @return array
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*/
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public function listTables()
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{
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$this->_connect();
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return $this->_serverType->listTables();
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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 database or 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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*
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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, $schemaName = null)
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{
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$this->_connect();
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return $this->_serverType->describeTable($tableName, $schemaName);
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}
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/**
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* Inserts a table row with specified data.
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* Special handling for PDO_IBM
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* remove empty slots
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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 $bind)
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{
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$this->_connect();
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$newbind = array();
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if (is_array($bind)) {
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foreach ($bind as $name => $value) {
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if($value !== null) {
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$newbind[$name] = $value;
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}
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}
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}
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return parent::insert($table, $newbind);
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}
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/**
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* Adds an adapter-specific LIMIT clause to the SELECT statement.
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*
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* @param string $sql
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* @param integer $count
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* @param integer $offset OPTIONAL
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* @return string
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*/
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public function limit($sql, $count, $offset = 0)
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{
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$this->_connect();
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return $this->_serverType->limit($sql, $count, $offset);
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}
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/**
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* Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT
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* column.
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*
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* @param string $tableName OPTIONAL
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* @param string $primaryKey OPTIONAL
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* @return integer
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*/
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public function lastInsertId($tableName = null, $primaryKey = null)
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{
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$this->_connect();
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if ($tableName !== null) {
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$sequenceName = $tableName;
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if ($primaryKey) {
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$sequenceName .= "_$primaryKey";
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}
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$sequenceName .= '_seq';
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return $this->lastSequenceId($sequenceName);
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}
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$id = $this->getConnection()->lastInsertId();
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return $id;
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}
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/**
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* Return the most recent value from the specified sequence in the database.
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*
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* @param string $sequenceName
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* @return integer
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*/
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public function lastSequenceId($sequenceName)
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{
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$this->_connect();
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return $this->_serverType->lastSequenceId($sequenceName);
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}
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/**
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* Generate a new value from the specified sequence in the database,
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* and return it.
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*
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* @param string $sequenceName
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* @return integer
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*/
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public function nextSequenceId($sequenceName)
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{
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$this->_connect();
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return $this->_serverType->nextSequenceId($sequenceName);
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}
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/**
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* Retrieve server version in PHP style
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* Pdo_Idm doesn't support getAttribute(PDO::ATTR_SERVER_VERSION)
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* @return string
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*/
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public function getServerVersion()
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{
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try {
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$stmt = $this->query('SELECT service_level, fixpack_num FROM TABLE (sysproc.env_get_inst_info()) as INSTANCEINFO');
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$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
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if (count($result)) {
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$matches = null;
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if (preg_match('/((?:[0-9]{1,2}\.){1,3}[0-9]{1,2})/', $result[0][0], $matches)) {
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return $matches[1];
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} else {
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return null;
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}
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}
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return null;
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} catch (PDOException $e) {
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return null;
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}
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}
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}
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