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309 lines
8.3 KiB
309 lines
8.3 KiB
<?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 |
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* |
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* This content is released under the MIT License (MIT) |
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* |
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* Copyright (c) 2014 - 2018, British Columbia Institute of Technology |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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* THE SOFTWARE. |
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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. (https://ellislab.com/) |
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* @copyright Copyright (c) 2014 - 2018, British Columbia Institute of Technology (http://bcit.ca/) |
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* @license http://opensource.org/licenses/MIT MIT License |
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* @link https://codeigniter.com |
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* @since Version 3.0.0 |
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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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* PDO Informix 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 https://codeigniter.com/user_guide/database/ |
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*/ |
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class CI_DB_pdo_informix_driver extends CI_DB_pdo_driver { |
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/** |
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* Sub-driver |
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* |
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* @var string |
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*/ |
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public $subdriver = 'informix'; |
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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('ASC', 'ASC'); // Currently not supported |
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// -------------------------------------------------------------------- |
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/** |
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* Class constructor |
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* |
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* Builds the DSN if not already set. |
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* |
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* @param array $params |
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* @return void |
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*/ |
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public function __construct($params) |
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{ |
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parent::__construct($params); |
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if (empty($this->dsn)) |
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{ |
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$this->dsn = 'informix:'; |
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// Pre-defined DSN |
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if (empty($this->hostname) && empty($this->host) && empty($this->port) && empty($this->service)) |
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{ |
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if (isset($this->DSN)) |
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{ |
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$this->dsn .= 'DSN='.$this->DSN; |
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} |
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elseif ( ! empty($this->database)) |
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{ |
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$this->dsn .= 'DSN='.$this->database; |
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} |
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return; |
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} |
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if (isset($this->host)) |
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{ |
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$this->dsn .= 'host='.$this->host; |
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} |
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else |
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{ |
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$this->dsn .= 'host='.(empty($this->hostname) ? '127.0.0.1' : $this->hostname); |
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} |
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if (isset($this->service)) |
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{ |
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$this->dsn .= '; service='.$this->service; |
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} |
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elseif ( ! empty($this->port)) |
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{ |
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$this->dsn .= '; service='.$this->port; |
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} |
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empty($this->database) OR $this->dsn .= '; database='.$this->database; |
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empty($this->server) OR $this->dsn .= '; server='.$this->server; |
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$this->dsn .= '; protocol='.(isset($this->protocol) ? $this->protocol : 'onsoctcp') |
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.'; EnableScrollableCursors=1'; |
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} |
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} |
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// -------------------------------------------------------------------- |
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/** |
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* Show 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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$sql = 'SELECT "tabname" FROM "systables" |
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WHERE "tabid" > 99 AND "tabtype" = \'T\' AND LOWER("owner") = '.$this->escape(strtolower($this->username)); |
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if ($prefix_limit === TRUE && $this->dbprefix !== '') |
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{ |
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$sql .= ' AND "tabname" 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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if (strpos($table, '.') !== FALSE) |
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{ |
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sscanf($table, '%[^.].%s', $owner, $table); |
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} |
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else |
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{ |
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$owner = $this->username; |
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} |
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return 'SELECT "colname" FROM "systables", "syscolumns" |
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WHERE "systables"."tabid" = "syscolumns"."tabid" |
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AND "systables"."tabtype" = \'T\' |
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AND LOWER("systables"."owner") = '.$this->escape(strtolower($owner)).' |
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AND LOWER("systables"."tabname") = '.$this->escape(strtolower($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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$sql = 'SELECT "syscolumns"."colname" AS "name", |
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CASE "syscolumns"."coltype" |
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WHEN 0 THEN \'CHAR\' |
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WHEN 1 THEN \'SMALLINT\' |
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WHEN 2 THEN \'INTEGER\' |
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WHEN 3 THEN \'FLOAT\' |
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WHEN 4 THEN \'SMALLFLOAT\' |
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WHEN 5 THEN \'DECIMAL\' |
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WHEN 6 THEN \'SERIAL\' |
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WHEN 7 THEN \'DATE\' |
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WHEN 8 THEN \'MONEY\' |
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WHEN 9 THEN \'NULL\' |
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WHEN 10 THEN \'DATETIME\' |
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WHEN 11 THEN \'BYTE\' |
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WHEN 12 THEN \'TEXT\' |
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WHEN 13 THEN \'VARCHAR\' |
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WHEN 14 THEN \'INTERVAL\' |
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WHEN 15 THEN \'NCHAR\' |
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WHEN 16 THEN \'NVARCHAR\' |
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WHEN 17 THEN \'INT8\' |
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WHEN 18 THEN \'SERIAL8\' |
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WHEN 19 THEN \'SET\' |
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WHEN 20 THEN \'MULTISET\' |
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WHEN 21 THEN \'LIST\' |
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WHEN 22 THEN \'Unnamed ROW\' |
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WHEN 40 THEN \'LVARCHAR\' |
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WHEN 41 THEN \'BLOB/CLOB/BOOLEAN\' |
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WHEN 4118 THEN \'Named ROW\' |
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ELSE "syscolumns"."coltype" |
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END AS "type", |
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"syscolumns"."collength" as "max_length", |
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CASE "sysdefaults"."type" |
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WHEN \'L\' THEN "sysdefaults"."default" |
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ELSE NULL |
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END AS "default" |
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FROM "syscolumns", "systables", "sysdefaults" |
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WHERE "syscolumns"."tabid" = "systables"."tabid" |
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AND "systables"."tabid" = "sysdefaults"."tabid" |
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AND "syscolumns"."colno" = "sysdefaults"."colno" |
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AND "systables"."tabtype" = \'T\' |
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AND LOWER("systables"."owner") = '.$this->escape(strtolower($this->username)).' |
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AND LOWER("systables"."tabname") = '.$this->escape(strtolower($table)).' |
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ORDER BY "syscolumns"."colno"'; |
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return (($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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* 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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$this->qb_orderby = array(); |
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return parent::_update($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 'TRUNCATE TABLE ONLY '.$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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$select = 'SELECT '.($this->qb_offset ? 'SKIP '.$this->qb_offset : '').'FIRST '.$this->qb_limit.' '; |
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return preg_replace('/^(SELECT\s)/i', $select, $sql, 1); |
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} |
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}
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