[289] | 1 | <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
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| 2 | /** |
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| 3 | * Code Igniter |
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| 4 | * |
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| 5 | * An open source application development framework for PHP 5.1.6 or newer |
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| 6 | * |
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| 7 | * @package CodeIgniter |
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| 8 | * @author ExpressionEngine Dev Team |
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| 9 | * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. |
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| 10 | * @license http://codeigniter.com/user_guide/license.html |
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| 11 | * @link http://codeigniter.com |
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| 12 | * @since Version 1.0 |
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| 13 | * @filesource |
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| 14 | */ |
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| 15 | |
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| 16 | // ------------------------------------------------------------------------ |
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| 17 | |
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| 18 | /** |
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| 19 | * Database Utility Class |
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| 20 | * |
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| 21 | * @category Database |
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| 22 | * @author ExpressionEngine Dev Team |
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| 23 | * @link http://codeigniter.com/user_guide/database/ |
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| 24 | */ |
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| 25 | class CI_DB_forge { |
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| 26 | |
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| 27 | var $fields = array(); |
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| 28 | var $keys = array(); |
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| 29 | var $primary_keys = array(); |
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| 30 | var $db_char_set = ''; |
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| 31 | |
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| 32 | /** |
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| 33 | * Constructor |
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| 34 | * |
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| 35 | * Grabs the CI super object instance so we can access it. |
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| 36 | * |
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| 37 | */ |
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| 38 | function __construct() |
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| 39 | { |
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| 40 | // Assign the main database object to $this->db |
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| 41 | $CI =& get_instance(); |
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| 42 | $this->db =& $CI->db; |
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| 43 | log_message('debug', "Database Forge Class Initialized"); |
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| 44 | } |
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| 45 | |
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| 46 | // -------------------------------------------------------------------- |
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| 47 | |
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| 48 | /** |
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| 49 | * Create database |
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| 50 | * |
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| 51 | * @access public |
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| 52 | * @param string the database name |
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| 53 | * @return bool |
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| 54 | */ |
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| 55 | function create_database($db_name) |
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| 56 | { |
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| 57 | $sql = $this->_create_database($db_name); |
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| 58 | |
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| 59 | if (is_bool($sql)) |
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| 60 | { |
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| 61 | return $sql; |
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| 62 | } |
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| 63 | |
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| 64 | return $this->db->query($sql); |
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| 65 | } |
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| 66 | |
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| 67 | // -------------------------------------------------------------------- |
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| 68 | |
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| 69 | /** |
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| 70 | * Drop database |
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| 71 | * |
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| 72 | * @access public |
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| 73 | * @param string the database name |
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| 74 | * @return bool |
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| 75 | */ |
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| 76 | function drop_database($db_name) |
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| 77 | { |
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| 78 | $sql = $this->_drop_database($db_name); |
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| 79 | |
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| 80 | if (is_bool($sql)) |
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| 81 | { |
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| 82 | return $sql; |
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| 83 | } |
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| 84 | |
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| 85 | return $this->db->query($sql); |
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| 86 | } |
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| 87 | |
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| 88 | // -------------------------------------------------------------------- |
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| 89 | |
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| 90 | /** |
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| 91 | * Add Key |
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| 92 | * |
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| 93 | * @access public |
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| 94 | * @param string key |
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| 95 | * @param string type |
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| 96 | * @return void |
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| 97 | */ |
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| 98 | function add_key($key = '', $primary = FALSE) |
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| 99 | { |
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| 100 | if (is_array($key)) |
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| 101 | { |
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| 102 | foreach ($key as $one) |
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| 103 | { |
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| 104 | $this->add_key($one, $primary); |
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| 105 | } |
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| 106 | |
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| 107 | return; |
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| 108 | } |
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| 109 | |
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| 110 | if ($key == '') |
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| 111 | { |
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| 112 | show_error('Key information is required for that operation.'); |
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| 113 | } |
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| 114 | |
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| 115 | if ($primary === TRUE) |
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| 116 | { |
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| 117 | $this->primary_keys[] = $key; |
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| 118 | } |
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| 119 | else |
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| 120 | { |
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| 121 | $this->keys[] = $key; |
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| 122 | } |
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| 123 | } |
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| 124 | |
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| 125 | // -------------------------------------------------------------------- |
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| 126 | |
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| 127 | /** |
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| 128 | * Add Field |
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| 129 | * |
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| 130 | * @access public |
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| 131 | * @param string collation |
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| 132 | * @return void |
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| 133 | */ |
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| 134 | function add_field($field = '') |
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| 135 | { |
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| 136 | if ($field == '') |
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| 137 | { |
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| 138 | show_error('Field information is required.'); |
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| 139 | } |
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| 140 | |
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| 141 | if (is_string($field)) |
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| 142 | { |
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| 143 | if ($field == 'id') |
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| 144 | { |
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| 145 | $this->add_field(array( |
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| 146 | 'id' => array( |
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| 147 | 'type' => 'INT', |
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| 148 | 'constraint' => 9, |
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| 149 | 'auto_increment' => TRUE |
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| 150 | ) |
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| 151 | )); |
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| 152 | $this->add_key('id', TRUE); |
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| 153 | } |
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| 154 | else |
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| 155 | { |
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| 156 | if (strpos($field, ' ') === FALSE) |
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| 157 | { |
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| 158 | show_error('Field information is required for that operation.'); |
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| 159 | } |
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| 160 | |
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| 161 | $this->fields[] = $field; |
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| 162 | } |
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| 163 | } |
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| 164 | |
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| 165 | if (is_array($field)) |
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| 166 | { |
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| 167 | $this->fields = array_merge($this->fields, $field); |
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| 168 | } |
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| 169 | |
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| 170 | } |
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| 171 | |
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| 172 | // -------------------------------------------------------------------- |
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| 173 | |
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| 174 | /** |
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| 175 | * Create Table |
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| 176 | * |
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| 177 | * @access public |
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| 178 | * @param string the table name |
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| 179 | * @return bool |
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| 180 | */ |
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| 181 | function create_table($table = '', $if_not_exists = FALSE) |
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| 182 | { |
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| 183 | if ($table == '') |
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| 184 | { |
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| 185 | show_error('A table name is required for that operation.'); |
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| 186 | } |
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| 187 | |
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| 188 | if (count($this->fields) == 0) |
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| 189 | { |
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| 190 | show_error('Field information is required.'); |
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| 191 | } |
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| 192 | |
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| 193 | $sql = $this->_create_table($this->db->dbprefix.$table, $this->fields, $this->primary_keys, $this->keys, $if_not_exists); |
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| 194 | |
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| 195 | $this->_reset(); |
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| 196 | return $this->db->query($sql); |
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| 197 | } |
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| 198 | |
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| 199 | // -------------------------------------------------------------------- |
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| 200 | |
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| 201 | /** |
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| 202 | * Drop Table |
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| 203 | * |
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| 204 | * @access public |
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| 205 | * @param string the table name |
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| 206 | * @return bool |
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| 207 | */ |
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| 208 | function drop_table($table_name) |
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| 209 | { |
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| 210 | $sql = $this->_drop_table($this->db->dbprefix.$table_name); |
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| 211 | |
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| 212 | if (is_bool($sql)) |
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| 213 | { |
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| 214 | return $sql; |
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| 215 | } |
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| 216 | |
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| 217 | return $this->db->query($sql); |
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| 218 | } |
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| 219 | |
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| 220 | // -------------------------------------------------------------------- |
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| 221 | |
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| 222 | /** |
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| 223 | * Rename Table |
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| 224 | * |
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| 225 | * @access public |
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| 226 | * @param string the old table name |
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| 227 | * @param string the new table name |
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| 228 | * @return bool |
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| 229 | */ |
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| 230 | function rename_table($table_name, $new_table_name) |
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| 231 | { |
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| 232 | if ($table_name == '' OR $new_table_name == '') |
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| 233 | { |
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| 234 | show_error('A table name is required for that operation.'); |
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| 235 | } |
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| 236 | |
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| 237 | $sql = $this->_rename_table($this->db->dbprefix.$table_name, $this->db->dbprefix.$new_table_name); |
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| 238 | return $this->db->query($sql); |
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| 239 | } |
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| 240 | |
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| 241 | // -------------------------------------------------------------------- |
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| 242 | |
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| 243 | /** |
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| 244 | * Column Add |
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| 245 | * |
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| 246 | * @access public |
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| 247 | * @param string the table name |
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| 248 | * @param string the column name |
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| 249 | * @param string the column definition |
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| 250 | * @return bool |
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| 251 | */ |
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| 252 | function add_column($table = '', $field = array(), $after_field = '') |
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| 253 | { |
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| 254 | if ($table == '') |
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| 255 | { |
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| 256 | show_error('A table name is required for that operation.'); |
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| 257 | } |
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| 258 | |
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| 259 | // add field info into field array, but we can only do one at a time |
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| 260 | // so we cycle through |
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| 261 | |
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| 262 | foreach ($field as $k => $v) |
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| 263 | { |
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| 264 | $this->add_field(array($k => $field[$k])); |
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| 265 | |
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| 266 | if (count($this->fields) == 0) |
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| 267 | { |
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| 268 | show_error('Field information is required.'); |
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| 269 | } |
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| 270 | |
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| 271 | $sql = $this->_alter_table('ADD', $this->db->dbprefix.$table, $this->fields, $after_field); |
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| 272 | |
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| 273 | $this->_reset(); |
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| 274 | |
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| 275 | if ($this->db->query($sql) === FALSE) |
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| 276 | { |
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| 277 | return FALSE; |
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| 278 | } |
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| 279 | } |
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| 280 | |
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| 281 | return TRUE; |
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| 282 | |
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| 283 | } |
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| 284 | |
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| 285 | // -------------------------------------------------------------------- |
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| 286 | |
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| 287 | /** |
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| 288 | * Column Drop |
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| 289 | * |
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| 290 | * @access public |
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| 291 | * @param string the table name |
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| 292 | * @param string the column name |
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| 293 | * @return bool |
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| 294 | */ |
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| 295 | function drop_column($table = '', $column_name = '') |
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| 296 | { |
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| 297 | |
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| 298 | if ($table == '') |
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| 299 | { |
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| 300 | show_error('A table name is required for that operation.'); |
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| 301 | } |
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| 302 | |
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| 303 | if ($column_name == '') |
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| 304 | { |
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| 305 | show_error('A column name is required for that operation.'); |
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| 306 | } |
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| 307 | |
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| 308 | $sql = $this->_alter_table('DROP', $this->db->dbprefix.$table, $column_name); |
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| 309 | |
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| 310 | return $this->db->query($sql); |
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| 311 | } |
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| 312 | |
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| 313 | // -------------------------------------------------------------------- |
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| 314 | |
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| 315 | /** |
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| 316 | * Column Modify |
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| 317 | * |
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| 318 | * @access public |
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| 319 | * @param string the table name |
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| 320 | * @param string the column name |
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| 321 | * @param string the column definition |
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| 322 | * @return bool |
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| 323 | */ |
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| 324 | function modify_column($table = '', $field = array()) |
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| 325 | { |
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| 326 | if ($table == '') |
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| 327 | { |
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| 328 | show_error('A table name is required for that operation.'); |
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| 329 | } |
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| 330 | |
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| 331 | // add field info into field array, but we can only do one at a time |
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| 332 | // so we cycle through |
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| 333 | |
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| 334 | foreach ($field as $k => $v) |
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| 335 | { |
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| 336 | // If no name provided, use the current name |
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| 337 | if ( ! isset($field[$k]['name'])) |
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| 338 | { |
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| 339 | $field[$k]['name'] = $k; |
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| 340 | } |
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| 341 | |
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| 342 | $this->add_field(array($k => $field[$k])); |
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| 343 | |
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| 344 | if (count($this->fields) == 0) |
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| 345 | { |
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| 346 | show_error('Field information is required.'); |
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| 347 | } |
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| 348 | |
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| 349 | $sql = $this->_alter_table('CHANGE', $this->db->dbprefix.$table, $this->fields); |
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| 350 | |
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| 351 | $this->_reset(); |
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| 352 | |
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| 353 | if ($this->db->query($sql) === FALSE) |
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| 354 | { |
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| 355 | return FALSE; |
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| 356 | } |
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| 357 | } |
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| 358 | |
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| 359 | return TRUE; |
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| 360 | } |
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| 361 | |
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| 362 | // -------------------------------------------------------------------- |
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| 363 | |
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| 364 | /** |
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| 365 | * Reset |
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| 366 | * |
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| 367 | * Resets table creation vars |
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| 368 | * |
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| 369 | * @access private |
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| 370 | * @return void |
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| 371 | */ |
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| 372 | function _reset() |
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| 373 | { |
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| 374 | $this->fields = array(); |
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| 375 | $this->keys = array(); |
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| 376 | $this->primary_keys = array(); |
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| 377 | } |
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| 378 | |
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| 379 | } |
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| 380 | |
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| 381 | /* End of file DB_forge.php */ |
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| 382 | /* Location: ./system/database/DB_forge.php */ |
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