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Diffstat (limited to 'system/database/drivers/ibase/ibase_driver.php')
| -rw-r--r-- | system/database/drivers/ibase/ibase_driver.php | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/system/database/drivers/ibase/ibase_driver.php b/system/database/drivers/ibase/ibase_driver.php new file mode 100644 index 000000000..3069d6699 --- /dev/null +++ b/system/database/drivers/ibase/ibase_driver.php @@ -0,0 +1,413 @@ +<?php +/** + * CodeIgniter + * + * An open source application development framework for PHP + * + * This content is released under the MIT License (MIT) + * + * Copyright (c) 2014 - 2017, British Columbia Institute of Technology + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * @package CodeIgniter + * @author EllisLab Dev Team + * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) + * @copyright Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/) + * @license http://opensource.org/licenses/MIT MIT License + * @link https://codeigniter.com + * @since Version 3.0.0 + * @filesource + */ +defined('BASEPATH') OR exit('No direct script access allowed'); + +/** + * Firebird/Interbase Database Adapter Class + * + * Note: _DB is an extender class that the app controller + * creates dynamically based on whether the query builder + * class is being used or not. + * + * @package CodeIgniter + * @subpackage Drivers + * @category Database + * @author EllisLab Dev Team + * @link https://codeigniter.com/user_guide/database/ + */ +class CI_DB_ibase_driver extends CI_DB { + + /** + * Database driver + * + * @var string + */ + public $dbdriver = 'ibase'; + + // -------------------------------------------------------------------- + + /** + * ORDER BY random keyword + * + * @var array + */ + protected $_random_keyword = array('RAND()', 'RAND()'); + + /** + * IBase Transaction status flag + * + * @var resource + */ + protected $_ibase_trans; + + // -------------------------------------------------------------------- + + /** + * Non-persistent database connection + * + * @param bool $persistent + * @return resource + */ + public function db_connect($persistent = FALSE) + { + return ($persistent === TRUE) + ? ibase_pconnect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set) + : ibase_connect($this->hostname.':'.$this->database, $this->username, $this->password, $this->char_set); + } + + // -------------------------------------------------------------------- + + /** + * Database version number + * + * @return string + */ + public function version() + { + if (isset($this->data_cache['version'])) + { + return $this->data_cache['version']; + } + + if (($service = ibase_service_attach($this->hostname, $this->username, $this->password))) + { + $this->data_cache['version'] = ibase_server_info($service, IBASE_SVC_SERVER_VERSION); + + // Don't keep the service open + ibase_service_detach($service); + return $this->data_cache['version']; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Execute the query + * + * @param string $sql an SQL query + * @return resource + */ + protected function _execute($sql) + { + return ibase_query(isset($this->_ibase_trans) ? $this->_ibase_trans : $this->conn_id, $sql); + } + + // -------------------------------------------------------------------- + + /** + * Begin Transaction + * + * @return bool + */ + protected function _trans_begin() + { + if (($trans_handle = ibase_trans($this->conn_id)) === FALSE) + { + return FALSE; + } + + $this->_ibase_trans = $trans_handle; + return TRUE; + } + + // -------------------------------------------------------------------- + + /** + * Commit Transaction + * + * @return bool + */ + protected function _trans_commit() + { + if (ibase_commit($this->_ibase_trans)) + { + $this->_ibase_trans = NULL; + return TRUE; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Rollback Transaction + * + * @return bool + */ + protected function _trans_rollback() + { + if (ibase_rollback($this->_ibase_trans)) + { + $this->_ibase_trans = NULL; + return TRUE; + } + + return FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Affected Rows + * + * @return int + */ + public function affected_rows() + { + return ibase_affected_rows($this->conn_id); + } + + // -------------------------------------------------------------------- + + /** + * Insert ID + * + * @param string $generator_name + * @param int $inc_by + * @return int + */ + public function insert_id($generator_name, $inc_by = 0) + { + //If a generator hasn't been used before it will return 0 + return ibase_gen_id('"'.$generator_name.'"', $inc_by); + } + + // -------------------------------------------------------------------- + + /** + * List table query + * + * Generates a platform-specific query string so that the table names can be fetched + * + * @param bool $prefix_limit + * @return string + */ + protected function _list_tables($prefix_limit = FALSE) + { + $sql = 'SELECT TRIM("RDB$RELATION_NAME") AS TABLE_NAME FROM "RDB$RELATIONS" WHERE "RDB$RELATION_NAME" NOT LIKE \'RDB$%\' AND "RDB$RELATION_NAME" NOT LIKE \'MON$%\''; + + if ($prefix_limit !== FALSE && $this->dbprefix !== '') + { + return $sql.' AND TRIM("RDB$RELATION_NAME") AS TABLE_NAME LIKE \''.$this->escape_like_str($this->dbprefix)."%' " + .sprintf($this->_like_escape_str, $this->_like_escape_chr); + } + + return $sql; + } + + // -------------------------------------------------------------------- + + /** + * Show column query + * + * Generates a platform-specific query string so that the column names can be fetched + * + * @param string $table + * @return string + */ + protected function _list_columns($table = '') + { + return 'SELECT TRIM("RDB$FIELD_NAME") AS COLUMN_NAME FROM "RDB$RELATION_FIELDS" WHERE "RDB$RELATION_NAME" = '.$this->escape($table); + } + + // -------------------------------------------------------------------- + + /** + * Returns an object with field data + * + * @param string $table + * @return array + */ + public function field_data($table) + { + $sql = 'SELECT "rfields"."RDB$FIELD_NAME" AS "name", + CASE "fields"."RDB$FIELD_TYPE" + WHEN 7 THEN \'SMALLINT\' + WHEN 8 THEN \'INTEGER\' + WHEN 9 THEN \'QUAD\' + WHEN 10 THEN \'FLOAT\' + WHEN 11 THEN \'DFLOAT\' + WHEN 12 THEN \'DATE\' + WHEN 13 THEN \'TIME\' + WHEN 14 THEN \'CHAR\' + WHEN 16 THEN \'INT64\' + WHEN 27 THEN \'DOUBLE\' + WHEN 35 THEN \'TIMESTAMP\' + WHEN 37 THEN \'VARCHAR\' + WHEN 40 THEN \'CSTRING\' + WHEN 261 THEN \'BLOB\' + ELSE NULL + END AS "type", + "fields"."RDB$FIELD_LENGTH" AS "max_length", + "rfields"."RDB$DEFAULT_VALUE" AS "default" + FROM "RDB$RELATION_FIELDS" "rfields" + JOIN "RDB$FIELDS" "fields" ON "rfields"."RDB$FIELD_SOURCE" = "fields"."RDB$FIELD_NAME" + WHERE "rfields"."RDB$RELATION_NAME" = '.$this->escape($table).' + ORDER BY "rfields"."RDB$FIELD_POSITION"'; + + return (($query = $this->query($sql)) !== FALSE) + ? $query->result_object() + : FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Error + * + * Returns an array containing code and message of the last + * database error that has occurred. + * + * @return array + */ + public function error() + { + return array('code' => ibase_errcode(), 'message' => ibase_errmsg()); + } + + // -------------------------------------------------------------------- + + /** + * Update statement + * + * Generates a platform-specific update string from the supplied data + * + * @param string $table + * @param array $values + * @return string + */ + protected function _update($table, $values) + { + $this->qb_limit = FALSE; + return parent::_update($table, $values); + } + + // -------------------------------------------------------------------- + + /** + * Truncate statement + * + * Generates a platform-specific truncate string from the supplied data + * + * If the database does not support the TRUNCATE statement, + * then this method maps to 'DELETE FROM table' + * + * @param string $table + * @return string + */ + protected function _truncate($table) + { + return 'DELETE FROM '.$table; + } + + // -------------------------------------------------------------------- + + /** + * Delete statement + * + * Generates a platform-specific delete string from the supplied data + * + * @param string $table + * @return string + */ + protected function _delete($table) + { + $this->qb_limit = FALSE; + return parent::_delete($table); + } + + // -------------------------------------------------------------------- + + /** + * LIMIT + * + * Generates a platform-specific LIMIT clause + * + * @param string $sql SQL Query + * @return string + */ + protected function _limit($sql) + { + // Limit clause depends on if Interbase or Firebird + if (stripos($this->version(), 'firebird') !== FALSE) + { + $select = 'FIRST '.$this->qb_limit + .($this->qb_offset ? ' SKIP '.$this->qb_offset : ''); + } + else + { + $select = 'ROWS ' + .($this->qb_offset ? $this->qb_offset.' TO '.($this->qb_limit + $this->qb_offset) : $this->qb_limit); + } + + return preg_replace('`SELECT`i', 'SELECT '.$select, $sql, 1); + } + + // -------------------------------------------------------------------- + + /** + * Insert batch statement + * + * Generates a platform-specific insert string from the supplied data. + * + * @param string $table Table name + * @param array $keys INSERT keys + * @param array $values INSERT values + * @return string|bool + */ + protected function _insert_batch($table, $keys, $values) + { + return ($this->db_debug) ? $this->display_error('db_unsupported_feature') : FALSE; + } + + // -------------------------------------------------------------------- + + /** + * Close DB Connection + * + * @return void + */ + protected function _close() + { + ibase_close($this->conn_id); + } + +} |