diff options
Diffstat (limited to 'system/database/drivers/oci8/oci8_forge.php')
-rw-r--r-- | system/database/drivers/oci8/oci8_forge.php | 297 |
1 files changed, 118 insertions, 179 deletions
diff --git a/system/database/drivers/oci8/oci8_forge.php b/system/database/drivers/oci8/oci8_forge.php index ab45220f3..724a76df4 100644 --- a/system/database/drivers/oci8/oci8_forge.php +++ b/system/database/drivers/oci8/oci8_forge.php @@ -1,248 +1,187 @@ -<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); +<?php /** * CodeIgniter * - * An open source application development framework for PHP 5.1.6 or newer + * An open source application development framework for PHP * - * @package CodeIgniter - * @author ExpressionEngine Dev Team - * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. - * @license http://codeigniter.com/user_guide/license.html - * @link http://codeigniter.com - * @since Version 1.0 + * 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 1.4.1 * @filesource */ - -// ------------------------------------------------------------------------ +defined('BASEPATH') OR exit('No direct script access allowed'); /** * Oracle Forge Class * * @category Database - * @author ExpressionEngine Dev Team - * @link http://codeigniter.com/user_guide/database/ + * @author EllisLab Dev Team + * @link https://codeigniter.com/user_guide/database/ */ class CI_DB_oci8_forge extends CI_DB_forge { /** - * Create database + * CREATE DATABASE statement * - * @access public - * @param string the database name - * @return bool + * @var string */ - function _create_database($name) - { - return FALSE; - } + protected $_create_database = FALSE; - // -------------------------------------------------------------------- + /** + * CREATE TABLE IF statement + * + * @var string + */ + protected $_create_table_if = FALSE; /** - * Drop database + * DROP DATABASE statement * - * @access private - * @param string the database name - * @return bool + * @var string */ - function _drop_database($name) - { - return FALSE; - } + protected $_drop_database = FALSE; + + /** + * DROP TABLE IF statement + * + * @var string + */ + protected $_drop_table_if = FALSE; + + /** + * UNSIGNED support + * + * @var bool|array + */ + protected $_unsigned = FALSE; // -------------------------------------------------------------------- /** - * Create Table + * ALTER TABLE * - * @access private - * @param string the table name - * @param array the fields - * @param mixed primary key(s) - * @param mixed key(s) - * @param boolean should 'IF NOT EXISTS' be added to the SQL - * @return bool + * @param string $alter_type ALTER type + * @param string $table Table name + * @param mixed $field Column definition + * @return string|string[] */ - function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists) + protected function _alter_table($alter_type, $table, $field) { - $sql = 'CREATE TABLE '; - - if ($if_not_exists === TRUE) + if ($alter_type === 'DROP') { - $sql .= 'IF NOT EXISTS '; + return parent::_alter_table($alter_type, $table, $field); + } + elseif ($alter_type === 'CHANGE') + { + $alter_type = 'MODIFY'; } - $sql .= $this->db->_escape_identifiers($table)." ("; - $current_field_count = 0; - - foreach ($fields as $field=>$attributes) + $sql = 'ALTER TABLE '.$this->db->escape_identifiers($table); + $sqls = array(); + for ($i = 0, $c = count($field); $i < $c; $i++) { - // Numeric field names aren't allowed in databases, so if the key is - // numeric, we know it was assigned by PHP and the developer manually - // entered the field information, so we'll simply add it to the list - if (is_numeric($field)) + if ($field[$i]['_literal'] !== FALSE) { - $sql .= "\n\t$attributes"; + $field[$i] = "\n\t".$field[$i]['_literal']; } else { - $attributes = array_change_key_case($attributes, CASE_UPPER); - - $sql .= "\n\t".$this->db->_protect_identifiers($field); - - $sql .= ' '.$attributes['TYPE']; - - if (array_key_exists('CONSTRAINT', $attributes)) - { - $sql .= '('.$attributes['CONSTRAINT'].')'; - } + $field[$i]['_literal'] = "\n\t".$this->_process_column($field[$i]); - if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE) + if ( ! empty($field[$i]['comment'])) { - $sql .= ' UNSIGNED'; + $sqls[] = 'COMMENT ON COLUMN ' + .$this->db->escape_identifiers($table).'.'.$this->db->escape_identifiers($field[$i]['name']) + .' IS '.$field[$i]['comment']; } - if (array_key_exists('DEFAULT', $attributes)) + if ($alter_type === 'MODIFY' && ! empty($field[$i]['new_name'])) { - $sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\''; + $sqls[] = $sql.' RENAME COLUMN '.$this->db->escape_identifiers($field[$i]['name']) + .' TO '.$this->db->escape_identifiers($field[$i]['new_name']); } - if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE) - { - $sql .= ' NULL'; - } - else - { - $sql .= ' NOT NULL'; - } - - if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE) - { - $sql .= ' AUTO_INCREMENT'; - } - } - - // don't add a comma on the end of the last field - if (++$current_field_count < count($fields)) - { - $sql .= ','; + $field[$i] = "\n\t".$field[$i]['_literal']; } } - if (count($primary_keys) > 0) - { - $primary_keys = $this->db->_protect_identifiers($primary_keys); - $sql .= ",\n\tPRIMARY KEY (" . implode(', ', $primary_keys) . ")"; - } - - if (is_array($keys) && count($keys) > 0) - { - foreach ($keys as $key) - { - if (is_array($key)) - { - $key = $this->db->_protect_identifiers($key); - } - else - { - $key = array($this->db->_protect_identifiers($key)); - } - - $sql .= ",\n\tUNIQUE COLUMNS (" . implode(', ', $key) . ")"; - } - } - - $sql .= "\n)"; + $sql .= ' '.$alter_type.' '; + $sql .= (count($field) === 1) + ? $field[0] + : '('.implode(',', $field).')'; - return $sql; + // RENAME COLUMN must be executed after MODIFY + array_unshift($sqls, $sql); + return $sqls; } // -------------------------------------------------------------------- /** - * Drop Table + * Field attribute AUTO_INCREMENT * - * @access private - * @return bool + * @param array &$attributes + * @param array &$field + * @return void */ - function _drop_table($table) + protected function _attr_auto_increment(&$attributes, &$field) { - return FALSE; + // Not supported - sequences and triggers must be used instead } // -------------------------------------------------------------------- /** - * Alter table query + * Field attribute TYPE * - * Generates a platform-specific query so that a table can be altered - * Called by add_column(), drop_column(), and column_alter(), + * Performs a data type mapping between different databases. * - * @access private - * @param string the ALTER type (ADD, DROP, CHANGE) - * @param string the column name - * @param string the table name - * @param string the column definition - * @param string the default value - * @param boolean should 'NOT NULL' be added - * @param string the field after which we should add the new field - * @return object + * @param array &$attributes + * @return void */ - function _alter_table($alter_type, $table, $column_name, $column_definition = '', $default_value = '', $null = '', $after_field = '') + protected function _attr_type(&$attributes) { - $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type ".$this->db->_protect_identifiers($column_name); - - // DROP has everything it needs now. - if ($alter_type == 'DROP') - { - return $sql; - } - - $sql .= " $column_definition"; - - if ($default_value != '') - { - $sql .= " DEFAULT \"$default_value\""; - } - - if ($null === NULL) - { - $sql .= ' NULL'; - } - else - { - $sql .= ' NOT NULL'; - } - - if ($after_field != '') + switch (strtoupper($attributes['TYPE'])) { - $sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field); + case 'TINYINT': + $attributes['TYPE'] = 'NUMBER'; + return; + case 'MEDIUMINT': + $attributes['TYPE'] = 'NUMBER'; + return; + case 'INT': + $attributes['TYPE'] = 'NUMBER'; + return; + case 'BIGINT': + $attributes['TYPE'] = 'NUMBER'; + return; + default: return; } - - return $sql; - - } - - // -------------------------------------------------------------------- - - /** - * Rename a table - * - * Generates a platform-specific query so that a table can be renamed - * - * @access private - * @param string the old table name - * @param string the new table name - * @return string - */ - function _rename_table($table_name, $new_table_name) - { - $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table_name)." RENAME TO ".$this->db->_protect_identifiers($new_table_name); - return $sql; } - - } - -/* End of file oci8_forge.php */ -/* Location: ./system/database/drivers/oci8/oci8_forge.php */
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