401 lines
9.6 KiB
PHP
401 lines
9.6 KiB
PHP
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<?php
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.2.4 or newer
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*
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* NOTICE OF LICENSE
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*
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* Licensed under the Open Software License version 3.0
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*
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* This source file is subject to the Open Software License (OSL 3.0) that is
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* bundled with this package in the files license.txt / license.rst. It is
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* also available through the world wide web at this URL:
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* http://opensource.org/licenses/OSL-3.0
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* If you did not receive a copy of the license and are unable to obtain it
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* through the world wide web, please send an email to
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* licensing@ellislab.com so we can send you a copy immediately.
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*
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* @package CodeIgniter
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* @author EllisLab Dev Team
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* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
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* @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
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* @link http://codeigniter.com
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* @since Version 3.0
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* @filesource
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*/
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defined('BASEPATH') OR exit('No direct script access allowed');
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/**
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* Firebird/Interbase Database Adapter Class
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*
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* Note: _DB is an extender class that the app controller
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* creates dynamically based on whether the query builder
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* class is being used or not.
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*
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* @package CodeIgniter
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* @subpackage Drivers
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* @category Database
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* @author EllisLab Dev Team
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* @link http://codeigniter.com/user_guide/database/
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*/
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class CI_DB_ibase_driver extends CI_DB {
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/**
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* Database driver
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*
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* @var string
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*/
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public $dbdriver = 'ibase';
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// --------------------------------------------------------------------
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/**
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* ORDER BY random keyword
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*
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* @var array
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*/
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protected $_random_keyword = array('RAND()', 'RAND()');
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/**
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* IBase Transaction status flag
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*
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* @var resource
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*/
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protected $_ibase_trans;
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// --------------------------------------------------------------------
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/**
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* Non-persistent database connection
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*
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* @param bool $persistent
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* @return resource
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*/
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public function db_connect($persistent = FALSE)
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{
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return ($persistent === TRUE)
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? ibase_pconnect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set)
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: ibase_connect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set);
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}
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// --------------------------------------------------------------------
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/**
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* Database version number
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*
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* @return string
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*/
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public function version()
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{
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if (isset($this->data_cache['version']))
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{
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return $this->data_cache['version'];
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}
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if (($service = ibase_service_attach($this->hostname, $this->username, $this->password)))
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{
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$this->data_cache['version'] = ibase_server_info($service, IBASE_SVC_SERVER_VERSION);
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// Don't keep the service open
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ibase_service_detach($service);
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return $this->data_cache['version'];
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}
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return FALSE;
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}
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// --------------------------------------------------------------------
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/**
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* Execute the query
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*
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* @param string $sql an SQL query
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* @return resource
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*/
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protected function _execute($sql)
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{
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return ibase_query($this->conn_id, $sql);
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}
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// --------------------------------------------------------------------
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/**
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* Begin Transaction
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*
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* @param bool $test_mode
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* @return bool
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*/
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public function trans_begin($test_mode = FALSE)
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{
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// When transactions are nested we only begin/commit/rollback the outermost ones
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if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
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{
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return TRUE;
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}
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// Reset the transaction failure flag.
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// If the $test_mode flag is set to TRUE transactions will be rolled back
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// even if the queries produce a successful result.
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$this->_trans_failure = ($test_mode === TRUE);
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$this->_ibase_trans = ibase_trans($this->conn_id);
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return TRUE;
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}
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// --------------------------------------------------------------------
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/**
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* Commit Transaction
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*
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* @return bool
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*/
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public function trans_commit()
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{
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// When transactions are nested we only begin/commit/rollback the outermost ones
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if ( ! $this->trans_enabled OR $this->_trans->depth > 0)
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{
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return TRUE;
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}
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return ibase_commit($this->_ibase_trans);
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}
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// --------------------------------------------------------------------
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/**
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* Rollback Transaction
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*
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* @return bool
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*/
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public function trans_rollback()
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{
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// When transactions are nested we only begin/commit/rollback the outermost ones
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if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
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{
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return TRUE;
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}
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return ibase_rollback($this->_ibase_trans);
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}
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// --------------------------------------------------------------------
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/**
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* Affected Rows
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*
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* @return int
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*/
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public function affected_rows()
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{
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return ibase_affected_rows($this->conn_id);
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}
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// --------------------------------------------------------------------
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/**
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* Insert ID
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*
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* @param string $generator_name
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* @param int $inc_by
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* @return int
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*/
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public function insert_id($generator_name, $inc_by = 0)
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{
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//If a generator hasn't been used before it will return 0
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return ibase_gen_id('"'.$generator_name.'"', $inc_by);
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}
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// --------------------------------------------------------------------
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/**
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* List table query
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*
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* Generates a platform-specific query string so that the table names can be fetched
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*
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* @param bool $prefix_limit
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* @return string
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*/
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protected function _list_tables($prefix_limit = FALSE)
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{
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$sql = 'SELECT "RDB$RELATION_NAME" FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\'';
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if ($prefix_limit !== FALSE && $this->dbprefix !== '')
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{
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return $sql.' AND "RDB$RELATION_NAME" LIKE \''.$this->escape_like_str($this->dbprefix)."%' "
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.sprintf($this->_like_escape_str, $this->_like_escape_chr);
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}
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return $sql;
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}
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// --------------------------------------------------------------------
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/**
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* Show column query
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*
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* Generates a platform-specific query string so that the column names can be fetched
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*
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* @param string $table
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* @return string
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*/
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protected function _list_columns($table = '')
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{
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return 'SELECT "RDB$FIELD_NAME" FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table);
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}
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// --------------------------------------------------------------------
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/**
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* Returns an object with field data
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*
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* @param string $table
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* @return array
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*/
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public function field_data($table = '')
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{
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if ($table === '')
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{
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return ($this->db_debug) ? $this->display_error('db_field_param_missing') : FALSE;
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}
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$sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name",
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CASE "fields"."RDB$FIELD_TYPE"
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WHEN 7 THEN \'SMALLINT\'
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WHEN 8 THEN \'INTEGER\'
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WHEN 9 THEN \'QUAD\'
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WHEN 10 THEN \'FLOAT\'
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WHEN 11 THEN \'DFLOAT\'
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WHEN 12 THEN \'DATE\'
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WHEN 13 THEN \'TIME\'
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WHEN 14 THEN \'CHAR\'
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WHEN 16 THEN \'INT64\'
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WHEN 27 THEN \'DOUBLE\'
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WHEN 35 THEN \'TIMESTAMP\'
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WHEN 37 THEN \'VARCHAR\'
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WHEN 40 THEN \'CSTRING\'
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WHEN 261 THEN \'BLOB\'
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ELSE NULL
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END AS "type",
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"fields"."RDB$FIELD_LENGTH" AS "max_length",
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"rfields"."RDB$DEFAULT_VALUE" AS "default"
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FROM "RDB$RELATION_FIELDS" "rfields"
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JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME"
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WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).'
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ORDER BY "rfields"."RDB$FIELD_POSITION"';
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return (($query = $this->query($sql)) !== FALSE)
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? $query->result_object()
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: FALSE;
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}
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// --------------------------------------------------------------------
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/**
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* Error
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*
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* Returns an array containing code and message of the last
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* database error that has occured.
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*
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* @return array
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*/
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public function error()
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{
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return array('code' => ibase_errcode(), 'message' => ibase_errmsg());
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}
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// --------------------------------------------------------------------
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/**
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* Update statement
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*
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* Generates a platform-specific update string from the supplied data
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*
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* @param string $table
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* @param array $values
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* @return string
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*/
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protected function _update($table, $values)
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{
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$this->qb_limit = FALSE;
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return parent::_update($table, $values);
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}
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// --------------------------------------------------------------------
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/**
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* Truncate statement
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*
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* Generates a platform-specific truncate string from the supplied data
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*
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* If the database does not support the TRUNCATE statement,
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* then this method maps to 'DELETE FROM table'
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*
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* @param string $table
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* @return string
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*/
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protected function _truncate($table)
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{
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return 'DELETE FROM '.$table;
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}
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// --------------------------------------------------------------------
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/**
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* Delete statement
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*
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* Generates a platform-specific delete string from the supplied data
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*
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* @param string $table
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* @return string
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*/
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protected function _delete($table)
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{
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$this->qb_limit = FALSE;
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return parent::_delete($table);
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}
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// --------------------------------------------------------------------
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/**
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* LIMIT
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*
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* Generates a platform-specific LIMIT clause
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*
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* @param string $sql SQL Query
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* @return string
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*/
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protected function _limit($sql)
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{
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// Limit clause depends on if Interbase or Firebird
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if (stripos($this->version(), 'firebird') !== FALSE)
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{
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$select = 'FIRST '.$this->qb_limit
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.($this->qb_offset ? ' SKIP '.$this->qb_offset : '');
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}
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else
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{
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$select = 'ROWS '
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.($this->qb_offset ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit);
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}
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return preg_replace('`SELECT`i', 'SELECT '.$select, $sql, 1);
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}
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// --------------------------------------------------------------------
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/**
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* Close DB Connection
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*
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* @return void
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*/
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protected function _close()
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{
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ibase_close($this->conn_id);
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}
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}
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/* End of file ibase_driver.php */
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/* Location: ./system/database/drivers/ibase/ibase_driver.php */
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