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683 lines
22 KiB
PHP
683 lines
22 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) 2005-2009 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: Oracle.php 18415 2009-09-25 17:46:24Z mikaelkael $
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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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require_once 'Zend/Db/Adapter/Abstract.php';
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/**
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* @see Zend_Db_Statement_Oracle
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*/
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require_once 'Zend/Db/Statement/Oracle.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 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_Oracle 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 => Either the name of the local Oracle instance, or the
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* name of the entry in tnsnames.ora to which you want to connect.
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* persistent => (boolean) Set TRUE to use a persistent connection
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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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'persistent' => false
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);
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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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'BINARY_DOUBLE' => Zend_Db::FLOAT_TYPE,
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'BINARY_FLOAT' => Zend_Db::FLOAT_TYPE,
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'NUMBER' => Zend_Db::FLOAT_TYPE,
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);
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/**
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* @var integer
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*/
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protected $_execute_mode = null;
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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_Oracle';
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/**
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* Check if LOB field are returned as string
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* instead of OCI-Lob object
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*
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* @var boolean
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*/
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protected $_lobAsString = null;
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/**
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* Creates a connection resource.
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*
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* @return void
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* @throws Zend_Db_Adapter_Oracle_Exception
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*/
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protected function _connect()
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{
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if (is_resource($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('oci8')) {
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/**
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* @see Zend_Db_Adapter_Oracle_Exception
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*/
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require_once 'Zend/Db/Adapter/Oracle/Exception.php';
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throw new Zend_Db_Adapter_Oracle_Exception('The OCI8 extension is required for this adapter but the extension is not loaded');
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}
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$this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS);
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$connectionFuncName = ($this->_config['persistent'] == true) ? 'oci_pconnect' : 'oci_connect';
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$this->_connection = @$connectionFuncName(
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$this->_config['username'],
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$this->_config['password'],
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$this->_config['dbname'],
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$this->_config['charset']);
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// check the connection
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if (!$this->_connection) {
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/**
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* @see Zend_Db_Adapter_Oracle_Exception
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*/
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require_once 'Zend/Db/Adapter/Oracle/Exception.php';
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throw new Zend_Db_Adapter_Oracle_Exception(oci_error());
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}
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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 ((bool) (is_resource($this->_connection)
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&& get_resource_type($this->_connection) == 'oci8 connection'));
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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 ($this->isConnected()) {
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oci_close($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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* Activate/deactivate return of LOB as string
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*
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* @param string $lob_as_string
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* @return Zend_Db_Adapter_Oracle
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*/
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public function setLobAsString($lobAsString)
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{
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$this->_lobAsString = (bool) $lobAsString;
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return $this;
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}
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/**
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* Return whether or not LOB are returned as string
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*
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* @return boolean
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*/
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public function getLobAsString()
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{
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if ($this->_lobAsString === null) {
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// if never set by user, we use driver option if it exists otherwise false
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if (isset($this->_config['driver_options']) &&
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isset($this->_config['driver_options']['lob_as_string'])) {
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$this->_lobAsString = (bool) $this->_config['driver_options']['lob_as_string'];
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} else {
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$this->_lobAsString = false;
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}
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}
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return $this->_lobAsString;
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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 $sql The SQL statement with placeholders.
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* @return Zend_Db_Statement_Oracle
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*/
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public function prepare($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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require_once 'Zend/Loader.php';
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Zend_Loader::loadClass($stmtClass);
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}
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$stmt = new $stmtClass($this, $sql);
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if ($stmt instanceof Zend_Db_Statement_Oracle) {
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$stmt->setLobAsString($this->getLobAsString());
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}
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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($value) || is_float($value)) {
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return $value;
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}
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$value = str_replace("'", "''", $value);
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return "'" . addcslashes($value, "\000\n\r\\\032") . "'";
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}
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/**
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* Quote a table identifier and alias.
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*
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* @param string|array|Zend_Db_Expr $ident The identifier or expression.
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* @param string $alias An alias for the table.
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* @param boolean $auto If true, heed the AUTO_QUOTE_IDENTIFIERS config option.
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* @return string The quoted identifier and alias.
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*/
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public function quoteTableAs($ident, $alias = null, $auto = false)
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{
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// Oracle doesn't allow the 'AS' keyword between the table identifier/expression and alias.
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return $this->_quoteIdentifierAs($ident, $alias, $auto, ' ');
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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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* This is supported only on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
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*
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* @param string $sequenceName
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* @return string
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*/
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public function lastSequenceId($sequenceName)
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{
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$this->_connect();
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$sql = 'SELECT '.$this->quoteIdentifier($sequenceName, true).'.CURRVAL FROM dual';
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$value = $this->fetchOne($sql);
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return $value;
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}
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/**
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* Generate a new value from the specified sequence in the database, and return it.
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* This is supported only on RDBMS brands that support sequences
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* (e.g. Oracle, PostgreSQL, DB2). Other RDBMS brands return null.
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*
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* @param string $sequenceName
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* @return string
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*/
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public function nextSequenceId($sequenceName)
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{
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$this->_connect();
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$sql = 'SELECT '.$this->quoteIdentifier($sequenceName, true).'.NEXTVAL FROM dual';
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$value = $this->fetchOne($sql);
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return $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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* Oracle does not support IDENTITY columns, so if the sequence is not
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* specified, this method returns null.
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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 !== 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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// No support for IDENTITY columns; return null
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return null;
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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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$this->_connect();
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$data = $this->fetchCol('SELECT table_name FROM all_tables');
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return $data;
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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, $schemaName = null)
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{
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$version = $this->getServerVersion();
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if (($version === null) || version_compare($version, '9.0.0', '>=')) {
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$sql = "SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
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TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
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TC.DATA_SCALE, TC.DATA_PRECISION, C.CONSTRAINT_TYPE, CC.POSITION
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FROM ALL_TAB_COLUMNS TC
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LEFT JOIN (ALL_CONS_COLUMNS CC JOIN ALL_CONSTRAINTS C
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ON (CC.CONSTRAINT_NAME = C.CONSTRAINT_NAME AND CC.TABLE_NAME = C.TABLE_NAME AND C.CONSTRAINT_TYPE = 'P'))
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ON TC.TABLE_NAME = CC.TABLE_NAME AND TC.COLUMN_NAME = CC.COLUMN_NAME
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WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)";
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$bind[':TBNAME'] = $tableName;
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if ($schemaName) {
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$sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
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$bind[':SCNAME'] = $schemaName;
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}
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$sql .= ' ORDER BY TC.COLUMN_ID';
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} else {
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$subSql="SELECT AC.OWNER, AC.TABLE_NAME, ACC.COLUMN_NAME, AC.CONSTRAINT_TYPE, ACC.POSITION
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from ALL_CONSTRAINTS AC, ALL_CONS_COLUMNS ACC
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WHERE ACC.CONSTRAINT_NAME = AC.CONSTRAINT_NAME
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AND ACC.TABLE_NAME = AC.TABLE_NAME
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AND ACC.OWNER = AC.OWNER
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AND AC.CONSTRAINT_TYPE = 'P'
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AND UPPER(AC.TABLE_NAME) = UPPER(:TBNAME)";
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$bind[':TBNAME'] = $tableName;
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if ($schemaName) {
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$subSql .= ' AND UPPER(ACC.OWNER) = UPPER(:SCNAME)';
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$bind[':SCNAME'] = $schemaName;
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}
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$sql="SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
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TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
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TC.DATA_SCALE, TC.DATA_PRECISION, CC.CONSTRAINT_TYPE, CC.POSITION
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FROM ALL_TAB_COLUMNS TC, ($subSql) CC
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WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)
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AND TC.OWNER = CC.OWNER(+) AND TC.TABLE_NAME = CC.TABLE_NAME(+) AND TC.COLUMN_NAME = CC.COLUMN_NAME(+)";
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if ($schemaName) {
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$sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
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}
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$sql .= ' ORDER BY TC.COLUMN_ID';
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}
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$stmt = $this->query($sql, $bind);
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/**
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* Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection
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*/
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$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
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$table_name = 0;
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$owner = 1;
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$column_name = 2;
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$data_type = 3;
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$data_default = 4;
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$nullable = 5;
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$column_id = 6;
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$data_length = 7;
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$data_scale = 8;
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$data_precision = 9;
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$constraint_type = 10;
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$position = 11;
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$desc = array();
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foreach ($result as $key => $row) {
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list ($primary, $primaryPosition, $identity) = array(false, null, false);
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if ($row[$constraint_type] == 'P') {
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$primary = true;
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$primaryPosition = $row[$position];
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/**
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* Oracle does not support auto-increment keys.
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*/
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$identity = false;
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}
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$desc[$this->foldCase($row[$column_name])] = array(
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'SCHEMA_NAME' => $this->foldCase($row[$owner]),
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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' => $row[$column_id],
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'DATA_TYPE' => $row[$data_type],
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'DEFAULT' => $row[$data_default],
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'NULLABLE' => (bool) ($row[$nullable] == 'Y'),
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'LENGTH' => $row[$data_length],
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'SCALE' => $row[$data_scale],
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'PRECISION' => $row[$data_precision],
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'UNSIGNED' => null, // @todo
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'PRIMARY' => $primary,
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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 $desc;
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}
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|
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/**
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* Leave autocommit mode and begin a transaction.
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*
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* @return void
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*/
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protected function _beginTransaction()
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{
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$this->_setExecuteMode(OCI_DEFAULT);
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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_Oracle_Exception
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*/
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protected function _commit()
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{
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if (!oci_commit($this->_connection)) {
|
|
/**
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* @see Zend_Db_Adapter_Oracle_Exception
|
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*/
|
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require_once 'Zend/Db/Adapter/Oracle/Exception.php';
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throw new Zend_Db_Adapter_Oracle_Exception(oci_error($this->_connection));
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}
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$this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS);
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}
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|
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/**
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* Roll back a transaction and return to autocommit mode.
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*
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* @return void
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* @throws Zend_Db_Adapter_Oracle_Exception
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*/
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protected function _rollBack()
|
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{
|
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if (!oci_rollback($this->_connection)) {
|
|
/**
|
|
* @see Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
require_once 'Zend/Db/Adapter/Oracle/Exception.php';
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throw new Zend_Db_Adapter_Oracle_Exception(oci_error($this->_connection));
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}
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$this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS);
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}
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|
|
/**
|
|
* Set the fetch mode.
|
|
*
|
|
* @todo Support FETCH_CLASS and FETCH_INTO.
|
|
*
|
|
* @param integer $mode A fetch mode.
|
|
* @return void
|
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* @throws Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
public function setFetchMode($mode)
|
|
{
|
|
switch ($mode) {
|
|
case Zend_Db::FETCH_NUM: // seq array
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|
case Zend_Db::FETCH_ASSOC: // assoc array
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case Zend_Db::FETCH_BOTH: // seq+assoc array
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case Zend_Db::FETCH_OBJ: // object
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|
$this->_fetchMode = $mode;
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break;
|
|
case Zend_Db::FETCH_BOUND: // bound to PHP variable
|
|
/**
|
|
* @see Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
require_once 'Zend/Db/Adapter/Oracle/Exception.php';
|
|
throw new Zend_Db_Adapter_Oracle_Exception('FETCH_BOUND is not supported yet');
|
|
break;
|
|
default:
|
|
/**
|
|
* @see Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
require_once 'Zend/Db/Adapter/Oracle/Exception.php';
|
|
throw new Zend_Db_Adapter_Oracle_Exception("Invalid fetch mode '$mode' specified");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds an adapter-specific LIMIT clause to the SELECT statement.
|
|
*
|
|
* @param string $sql
|
|
* @param integer $count
|
|
* @param integer $offset OPTIONAL
|
|
* @return string
|
|
* @throws Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
public function limit($sql, $count, $offset = 0)
|
|
{
|
|
$count = intval($count);
|
|
if ($count <= 0) {
|
|
/**
|
|
* @see Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
require_once 'Zend/Db/Adapter/Oracle/Exception.php';
|
|
throw new Zend_Db_Adapter_Oracle_Exception("LIMIT argument count=$count is not valid");
|
|
}
|
|
|
|
$offset = intval($offset);
|
|
if ($offset < 0) {
|
|
/**
|
|
* @see Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
require_once 'Zend/Db/Adapter/Oracle/Exception.php';
|
|
throw new Zend_Db_Adapter_Oracle_Exception("LIMIT argument offset=$offset is not valid");
|
|
}
|
|
|
|
/**
|
|
* Oracle does not implement the LIMIT clause as some RDBMS do.
|
|
* We have to simulate it with subqueries and ROWNUM.
|
|
* Unfortunately because we use the column wildcard "*",
|
|
* this puts an extra column into the query result set.
|
|
*/
|
|
$limit_sql = "SELECT z2.*
|
|
FROM (
|
|
SELECT z1.*, ROWNUM AS \"zend_db_rownum\"
|
|
FROM (
|
|
" . $sql . "
|
|
) z1
|
|
) z2
|
|
WHERE z2.\"zend_db_rownum\" BETWEEN " . ($offset+1) . " AND " . ($offset+$count);
|
|
return $limit_sql;
|
|
}
|
|
|
|
/**
|
|
* @param integer $mode
|
|
* @throws Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
private function _setExecuteMode($mode)
|
|
{
|
|
switch($mode) {
|
|
case OCI_COMMIT_ON_SUCCESS:
|
|
case OCI_DEFAULT:
|
|
case OCI_DESCRIBE_ONLY:
|
|
$this->_execute_mode = $mode;
|
|
break;
|
|
default:
|
|
/**
|
|
* @see Zend_Db_Adapter_Oracle_Exception
|
|
*/
|
|
require_once 'Zend/Db/Adapter/Oracle/Exception.php';
|
|
throw new Zend_Db_Adapter_Oracle_Exception("Invalid execution mode '$mode' specified");
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return int
|
|
*/
|
|
public function _getExecuteMode()
|
|
{
|
|
return $this->_execute_mode;
|
|
}
|
|
|
|
/**
|
|
* Inserts a table row with specified data.
|
|
*
|
|
* Oracle does not support anonymous ('?') binds.
|
|
*
|
|
* @param mixed $table The table to insert data into.
|
|
* @param array $bind Column-value pairs.
|
|
* @return int The number of affected rows.
|
|
*/
|
|
public function insert($table, array $bind)
|
|
{
|
|
$i = 0;
|
|
// extract and quote col names from the array keys
|
|
$cols = array();
|
|
$vals = array();
|
|
foreach ($bind as $col => $val) {
|
|
$cols[] = $this->quoteIdentifier($col, true);
|
|
if ($val instanceof Zend_Db_Expr) {
|
|
$vals[] = $val->__toString();
|
|
unset($bind[$col]);
|
|
} else {
|
|
$vals[] = ':'.$col.$i;
|
|
unset($bind[$col]);
|
|
$bind[':'.$col.$i] = $val;
|
|
}
|
|
$i++;
|
|
}
|
|
|
|
// build the statement
|
|
$sql = "INSERT INTO "
|
|
. $this->quoteIdentifier($table, true)
|
|
. ' (' . implode(', ', $cols) . ') '
|
|
. 'VALUES (' . implode(', ', $vals) . ')';
|
|
|
|
// execute the statement and return the number of affected rows
|
|
$stmt = $this->query($sql, $bind);
|
|
$result = $stmt->rowCount();
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Check if the adapter supports real SQL parameters.
|
|
*
|
|
* @param string $type 'positional' or 'named'
|
|
* @return bool
|
|
*/
|
|
public function supportsParameters($type)
|
|
{
|
|
switch ($type) {
|
|
case 'named':
|
|
return true;
|
|
case 'positional':
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Retrieve server version in PHP style
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getServerVersion()
|
|
{
|
|
$this->_connect();
|
|
$version = oci_server_version($this->_connection);
|
|
if ($version !== false) {
|
|
$matches = null;
|
|
if (preg_match('/((?:[0-9]{1,2}\.){1,3}[0-9]{1,2})/', $version, $matches)) {
|
|
return $matches[1];
|
|
} else {
|
|
return null;
|
|
}
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
}
|