1 | <?php |
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2 | // +----------------------------------------------------------------------+ |
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3 | // | PHP versions 4 and 5 | |
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4 | // +----------------------------------------------------------------------+ |
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5 | // | Copyright (c) 1998-2007 Manuel Lemos, Tomas V.V.Cox, | |
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6 | // | Stig. S. Bakken, Lukas Smith | |
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7 | // | All rights reserved. | |
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8 | // +----------------------------------------------------------------------+ |
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9 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | |
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10 | // | API as well as database abstraction for PHP applications. | |
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11 | // | This LICENSE is in the BSD license style. | |
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12 | // | | |
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13 | // | Redistribution and use in source and binary forms, with or without | |
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14 | // | modification, are permitted provided that the following conditions | |
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15 | // | are met: | |
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16 | // | | |
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17 | // | Redistributions of source code must retain the above copyright | |
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18 | // | notice, this list of conditions and the following disclaimer. | |
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19 | // | | |
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20 | // | Redistributions in binary form must reproduce the above copyright | |
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21 | // | notice, this list of conditions and the following disclaimer in the | |
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22 | // | documentation and/or other materials provided with the distribution. | |
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23 | // | | |
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24 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | |
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25 | // | Lukas Smith nor the names of his contributors may be used to endorse | |
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26 | // | or promote products derived from this software without specific prior| |
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27 | // | written permission. | |
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28 | // | | |
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29 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
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30 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
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31 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
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32 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
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33 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
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34 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
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35 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| |
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36 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
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37 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
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38 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| |
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39 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
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40 | // | POSSIBILITY OF SUCH DAMAGE. | |
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41 | // +----------------------------------------------------------------------+ |
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42 | // | Author: Lukas Smith <smith@pooteeweet.org> | |
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43 | // +----------------------------------------------------------------------+ |
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44 | // |
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45 | // $Id: mysql.php,v 1.80 2008/03/26 21:15:37 quipo Exp $ |
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46 | // |
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47 | |
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48 | require_once 'MDB2/Driver/Reverse/Common.php'; |
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49 | |
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50 | /** |
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51 | * MDB2 MySQL driver for the schema reverse engineering module |
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52 | * |
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53 | * @package MDB2 |
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54 | * @category Database |
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55 | * @author Lukas Smith <smith@pooteeweet.org> |
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56 | * @author Lorenzo Alberton <l.alberton@quipo.it> |
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57 | */ |
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58 | class MDB2_Driver_Reverse_mysql extends MDB2_Driver_Reverse_Common |
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59 | { |
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60 | // {{{ getTableFieldDefinition() |
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61 | |
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62 | /** |
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63 | * Get the structure of a field into an array |
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64 | * |
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65 | * @param string $table_name name of table that should be used in method |
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66 | * @param string $field_name name of field that should be used in method |
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67 | * @return mixed data array on success, a MDB2 error on failure |
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68 | * @access public |
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69 | */ |
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70 | function getTableFieldDefinition($table_name, $field_name) |
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71 | { |
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72 | $db =& $this->getDBInstance(); |
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73 | if (PEAR::isError($db)) { |
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74 | return $db; |
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75 | } |
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76 | |
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77 | $result = $db->loadModule('Datatype', null, true); |
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78 | if (PEAR::isError($result)) { |
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79 | return $result; |
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80 | } |
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81 | |
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82 | list($schema, $table) = $this->splitTableSchema($table_name); |
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83 | |
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84 | $table = $db->quoteIdentifier($table, true); |
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85 | $query = "SHOW FULL COLUMNS FROM $table LIKE ".$db->quote($field_name); |
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86 | $columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC); |
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87 | if (PEAR::isError($columns)) { |
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88 | return $columns; |
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89 | } |
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90 | foreach ($columns as $column) { |
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91 | $column = array_change_key_case($column, CASE_LOWER); |
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92 | $column['name'] = $column['field']; |
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93 | unset($column['field']); |
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94 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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95 | if ($db->options['field_case'] == CASE_LOWER) { |
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96 | $column['name'] = strtolower($column['name']); |
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97 | } else { |
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98 | $column['name'] = strtoupper($column['name']); |
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99 | } |
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100 | } else { |
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101 | $column = array_change_key_case($column, $db->options['field_case']); |
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102 | } |
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103 | if ($field_name == $column['name']) { |
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104 | $mapped_datatype = $db->datatype->mapNativeDatatype($column); |
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105 | if (PEAR::isError($mapped_datatype)) { |
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106 | return $mapped_datatype; |
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107 | } |
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108 | list($types, $length, $unsigned, $fixed) = $mapped_datatype; |
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109 | $notnull = false; |
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110 | if (empty($column['null']) || $column['null'] !== 'YES') { |
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111 | $notnull = true; |
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112 | } |
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113 | $default = false; |
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114 | if (array_key_exists('default', $column)) { |
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115 | $default = $column['default']; |
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116 | if (is_null($default) && $notnull) { |
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117 | $default = ''; |
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118 | } |
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119 | } |
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120 | $autoincrement = false; |
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121 | if (!empty($column['extra']) && $column['extra'] == 'auto_increment') { |
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122 | $autoincrement = true; |
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123 | } |
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124 | $collate = null; |
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125 | if (!empty($column['collation'])) { |
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126 | $collate = $column['collation']; |
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127 | $charset = preg_replace('/(.+?)(_.+)?/', '$1', $collate); |
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128 | } |
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129 | |
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130 | $definition[0] = array( |
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131 | 'notnull' => $notnull, |
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132 | 'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type']) |
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133 | ); |
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134 | if (!is_null($length)) { |
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135 | $definition[0]['length'] = $length; |
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136 | } |
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137 | if (!is_null($unsigned)) { |
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138 | $definition[0]['unsigned'] = $unsigned; |
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139 | } |
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140 | if (!is_null($fixed)) { |
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141 | $definition[0]['fixed'] = $fixed; |
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142 | } |
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143 | if ($default !== false) { |
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144 | $definition[0]['default'] = $default; |
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145 | } |
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146 | if ($autoincrement !== false) { |
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147 | $definition[0]['autoincrement'] = $autoincrement; |
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148 | } |
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149 | if (!is_null($collate)) { |
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150 | $definition[0]['collate'] = $collate; |
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151 | $definition[0]['charset'] = $charset; |
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152 | } |
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153 | foreach ($types as $key => $type) { |
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154 | $definition[$key] = $definition[0]; |
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155 | if ($type == 'clob' || $type == 'blob') { |
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156 | unset($definition[$key]['default']); |
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157 | } elseif ($type == 'timestamp' && $notnull && empty($definition[$key]['default'])) { |
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158 | $definition[$key]['default'] = '0000-00-00 00:00:00'; |
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159 | } |
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160 | $definition[$key]['type'] = $type; |
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161 | $definition[$key]['mdb2type'] = $type; |
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162 | } |
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163 | return $definition; |
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164 | } |
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165 | } |
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166 | |
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167 | return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
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168 | 'it was not specified an existing table column', __FUNCTION__); |
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169 | } |
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170 | |
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171 | // }}} |
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172 | // {{{ getTableIndexDefinition() |
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173 | |
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174 | /** |
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175 | * Get the structure of an index into an array |
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176 | * |
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177 | * @param string $table_name name of table that should be used in method |
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178 | * @param string $index_name name of index that should be used in method |
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179 | * @return mixed data array on success, a MDB2 error on failure |
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180 | * @access public |
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181 | */ |
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182 | function getTableIndexDefinition($table_name, $index_name) |
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183 | { |
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184 | $db =& $this->getDBInstance(); |
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185 | if (PEAR::isError($db)) { |
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186 | return $db; |
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187 | } |
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188 | |
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189 | list($schema, $table) = $this->splitTableSchema($table_name); |
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190 | |
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191 | $table = $db->quoteIdentifier($table, true); |
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192 | $query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */"; |
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193 | $index_name_mdb2 = $db->getIndexName($index_name); |
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194 | $result = $db->queryRow(sprintf($query, $db->quote($index_name_mdb2))); |
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195 | if (!PEAR::isError($result) && !is_null($result)) { |
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196 | // apply 'idxname_format' only if the query succeeded, otherwise |
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197 | // fallback to the given $index_name, without transformation |
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198 | $index_name = $index_name_mdb2; |
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199 | } |
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200 | $result = $db->query(sprintf($query, $db->quote($index_name))); |
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201 | if (PEAR::isError($result)) { |
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202 | return $result; |
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203 | } |
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204 | $colpos = 1; |
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205 | $definition = array(); |
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206 | while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) { |
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207 | $row = array_change_key_case($row, CASE_LOWER); |
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208 | $key_name = $row['key_name']; |
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209 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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210 | if ($db->options['field_case'] == CASE_LOWER) { |
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211 | $key_name = strtolower($key_name); |
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212 | } else { |
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213 | $key_name = strtoupper($key_name); |
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214 | } |
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215 | } |
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216 | if ($index_name == $key_name) { |
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217 | if (!$row['non_unique']) { |
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218 | return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
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219 | $index_name . ' is not an existing table index', __FUNCTION__); |
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220 | } |
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221 | $column_name = $row['column_name']; |
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222 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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223 | if ($db->options['field_case'] == CASE_LOWER) { |
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224 | $column_name = strtolower($column_name); |
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225 | } else { |
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226 | $column_name = strtoupper($column_name); |
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227 | } |
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228 | } |
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229 | $definition['fields'][$column_name] = array( |
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230 | 'position' => $colpos++ |
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231 | ); |
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232 | if (!empty($row['collation'])) { |
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233 | $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A' |
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234 | ? 'ascending' : 'descending'); |
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235 | } |
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236 | } |
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237 | } |
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238 | $result->free(); |
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239 | if (empty($definition['fields'])) { |
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240 | return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
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241 | $index_name . ' is not an existing table index', __FUNCTION__); |
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242 | } |
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243 | return $definition; |
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244 | } |
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245 | |
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246 | // }}} |
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247 | // {{{ getTableConstraintDefinition() |
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248 | |
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249 | /** |
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250 | * Get the structure of a constraint into an array |
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251 | * |
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252 | * @param string $table_name name of table that should be used in method |
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253 | * @param string $constraint_name name of constraint that should be used in method |
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254 | * @return mixed data array on success, a MDB2 error on failure |
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255 | * @access public |
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256 | */ |
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257 | function getTableConstraintDefinition($table_name, $constraint_name) |
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258 | { |
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259 | $db =& $this->getDBInstance(); |
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260 | if (PEAR::isError($db)) { |
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261 | return $db; |
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262 | } |
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263 | |
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264 | list($schema, $table) = $this->splitTableSchema($table_name); |
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265 | $constraint_name_original = $constraint_name; |
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266 | |
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267 | $table = $db->quoteIdentifier($table, true); |
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268 | $query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = %s */"; |
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269 | if (strtolower($constraint_name) != 'primary') { |
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270 | $constraint_name_mdb2 = $db->getIndexName($constraint_name); |
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271 | $result = $db->queryRow(sprintf($query, $db->quote($constraint_name_mdb2))); |
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272 | if (!PEAR::isError($result) && !is_null($result)) { |
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273 | // apply 'idxname_format' only if the query succeeded, otherwise |
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274 | // fallback to the given $index_name, without transformation |
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275 | $constraint_name = $constraint_name_mdb2; |
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276 | } |
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277 | } |
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278 | $result = $db->query(sprintf($query, $db->quote($constraint_name))); |
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279 | if (PEAR::isError($result)) { |
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280 | return $result; |
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281 | } |
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282 | $colpos = 1; |
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283 | //default values, eventually overridden |
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284 | $definition = array( |
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285 | 'primary' => false, |
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286 | 'unique' => false, |
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287 | 'foreign' => false, |
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288 | 'check' => false, |
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289 | 'fields' => array(), |
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290 | 'references' => array( |
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291 | 'table' => '', |
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292 | 'fields' => array(), |
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293 | ), |
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294 | 'onupdate' => '', |
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295 | 'ondelete' => '', |
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296 | 'match' => '', |
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297 | 'deferrable' => false, |
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298 | 'initiallydeferred' => false, |
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299 | ); |
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300 | while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) { |
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301 | $row = array_change_key_case($row, CASE_LOWER); |
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302 | $key_name = $row['key_name']; |
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303 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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304 | if ($db->options['field_case'] == CASE_LOWER) { |
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305 | $key_name = strtolower($key_name); |
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306 | } else { |
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307 | $key_name = strtoupper($key_name); |
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308 | } |
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309 | } |
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310 | if ($constraint_name == $key_name) { |
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311 | if ($row['non_unique']) { |
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312 | //FOREIGN KEY? |
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313 | return $this->_getTableFKConstraintDefinition($table, $constraint_name_original, $definition); |
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314 | } |
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315 | if ($row['key_name'] == 'PRIMARY') { |
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316 | $definition['primary'] = true; |
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317 | } elseif (!$row['non_unique']) { |
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318 | $definition['unique'] = true; |
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319 | } |
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320 | $column_name = $row['column_name']; |
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321 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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322 | if ($db->options['field_case'] == CASE_LOWER) { |
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323 | $column_name = strtolower($column_name); |
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324 | } else { |
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325 | $column_name = strtoupper($column_name); |
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326 | } |
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327 | } |
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328 | $definition['fields'][$column_name] = array( |
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329 | 'position' => $colpos++ |
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330 | ); |
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331 | if (!empty($row['collation'])) { |
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332 | $definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A' |
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333 | ? 'ascending' : 'descending'); |
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334 | } |
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335 | } |
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336 | } |
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337 | $result->free(); |
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338 | if (empty($definition['fields'])) { |
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339 | return $this->_getTableFKConstraintDefinition($table, $constraint_name_original, $definition); |
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340 | } |
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341 | return $definition; |
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342 | } |
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343 | |
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344 | // }}} |
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345 | // {{{ _getTableFKConstraintDefinition() |
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346 | |
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347 | /** |
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348 | * Get the FK definition from the CREATE TABLE statement |
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349 | * |
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350 | * @param string $table table name |
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351 | * @param string $constraint_name constraint name |
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352 | * @param array $definition default values for constraint definition |
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353 | * |
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354 | * @return array|PEAR_Error |
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355 | * @access private |
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356 | */ |
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357 | function _getTableFKConstraintDefinition($table, $constraint_name, $definition) |
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358 | { |
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359 | $db =& $this->getDBInstance(); |
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360 | if (PEAR::isError($db)) { |
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361 | return $db; |
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362 | } |
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363 | $query = 'SHOW CREATE TABLE '. $db->escape($table); |
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364 | $constraint = $db->queryOne($query, 'text', 1); |
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365 | if (!PEAR::isError($constraint) && !empty($constraint)) { |
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366 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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367 | if ($db->options['field_case'] == CASE_LOWER) { |
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368 | $constraint = strtolower($constraint); |
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369 | } else { |
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370 | $constraint = strtoupper($constraint); |
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371 | } |
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372 | } |
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373 | $constraint_name_original = $constraint_name; |
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374 | $constraint_name = $db->getIndexName($constraint_name); |
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375 | $pattern = '/\bCONSTRAINT\s+'.$constraint_name.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i'; |
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376 | if (!preg_match($pattern, str_replace('`', '', $constraint), $matches)) { |
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377 | //fallback to original constraint name |
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378 | $pattern = '/\bCONSTRAINT\s+'.$constraint_name_original.'\s+FOREIGN KEY\s+\(([^\)]+)\) \bREFERENCES\b ([^ ]+) \(([^\)]+)\)/i'; |
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379 | } |
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380 | if (preg_match($pattern, str_replace('`', '', $constraint), $matches)) { |
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381 | $definition['foreign'] = true; |
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382 | $column_names = explode(',', $matches[1]); |
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383 | $referenced_cols = explode(',', $matches[3]); |
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384 | $definition['references'] = array( |
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385 | 'table' => $matches[2], |
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386 | 'fields' => array(), |
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387 | ); |
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388 | $colpos = 1; |
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389 | foreach ($column_names as $column_name) { |
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390 | $definition['fields'][trim($column_name)] = array( |
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391 | 'position' => $colpos++ |
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392 | ); |
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393 | } |
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394 | $colpos = 1; |
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395 | foreach ($referenced_cols as $column_name) { |
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396 | $definition['references']['fields'][trim($column_name)] = array( |
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397 | 'position' => $colpos++ |
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398 | ); |
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399 | } |
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400 | $definition['onupdate'] = 'NO ACTION'; |
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401 | $definition['ondelete'] = 'NO ACTION'; |
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402 | $definition['match'] = 'SIMPLE'; |
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403 | return $definition; |
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404 | } |
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405 | } |
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406 | return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null, |
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407 | $constraint_name . ' is not an existing table constraint', __FUNCTION__); |
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408 | } |
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409 | |
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410 | // }}} |
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411 | // {{{ getTriggerDefinition() |
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412 | |
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413 | /** |
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414 | * Get the structure of a trigger into an array |
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415 | * |
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416 | * EXPERIMENTAL |
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417 | * |
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418 | * WARNING: this function is experimental and may change the returned value |
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419 | * at any time until labelled as non-experimental |
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420 | * |
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421 | * @param string $trigger name of trigger that should be used in method |
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422 | * @return mixed data array on success, a MDB2 error on failure |
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423 | * @access public |
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424 | */ |
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425 | function getTriggerDefinition($trigger) |
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426 | { |
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427 | $db =& $this->getDBInstance(); |
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428 | if (PEAR::isError($db)) { |
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429 | return $db; |
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430 | } |
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431 | |
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432 | $query = 'SELECT trigger_name, |
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433 | event_object_table AS table_name, |
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434 | action_statement AS trigger_body, |
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435 | action_timing AS trigger_type, |
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436 | event_manipulation AS trigger_event |
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437 | FROM information_schema.triggers |
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438 | WHERE trigger_name = '. $db->quote($trigger, 'text'); |
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439 | $types = array( |
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440 | 'trigger_name' => 'text', |
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441 | 'table_name' => 'text', |
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442 | 'trigger_body' => 'text', |
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443 | 'trigger_type' => 'text', |
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444 | 'trigger_event' => 'text', |
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445 | ); |
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446 | $def = $db->queryRow($query, $types, MDB2_FETCHMODE_ASSOC); |
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447 | if (PEAR::isError($def)) { |
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448 | return $def; |
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449 | } |
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450 | $def['trigger_comment'] = ''; |
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451 | $def['trigger_enabled'] = true; |
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452 | return $def; |
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453 | } |
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454 | |
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455 | // }}} |
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456 | // {{{ tableInfo() |
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457 | |
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458 | /** |
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459 | * Returns information about a table or a result set |
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460 | * |
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461 | * @param object|string $result MDB2_result object from a query or a |
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462 | * string containing the name of a table. |
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463 | * While this also accepts a query result |
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464 | * resource identifier, this behavior is |
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465 | * deprecated. |
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466 | * @param int $mode a valid tableInfo mode |
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467 | * |
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468 | * @return array an associative array with the information requested. |
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469 | * A MDB2_Error object on failure. |
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470 | * |
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471 | * @see MDB2_Driver_Common::setOption() |
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472 | */ |
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473 | function tableInfo($result, $mode = null) |
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474 | { |
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475 | if (is_string($result)) { |
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476 | return parent::tableInfo($result, $mode); |
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477 | } |
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478 | |
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479 | $db =& $this->getDBInstance(); |
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480 | if (PEAR::isError($db)) { |
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481 | return $db; |
---|
482 | } |
---|
483 | |
---|
484 | $resource = MDB2::isResultCommon($result) ? $result->getResource() : $result; |
---|
485 | if (!is_resource($resource)) { |
---|
486 | return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null, |
---|
487 | 'Could not generate result resource', __FUNCTION__); |
---|
488 | } |
---|
489 | |
---|
490 | if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) { |
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491 | if ($db->options['field_case'] == CASE_LOWER) { |
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492 | $case_func = 'strtolower'; |
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493 | } else { |
---|
494 | $case_func = 'strtoupper'; |
---|
495 | } |
---|
496 | } else { |
---|
497 | $case_func = 'strval'; |
---|
498 | } |
---|
499 | |
---|
500 | $count = @mysql_num_fields($resource); |
---|
501 | $res = array(); |
---|
502 | if ($mode) { |
---|
503 | $res['num_fields'] = $count; |
---|
504 | } |
---|
505 | |
---|
506 | $db->loadModule('Datatype', null, true); |
---|
507 | for ($i = 0; $i < $count; $i++) { |
---|
508 | $res[$i] = array( |
---|
509 | 'table' => $case_func(@mysql_field_table($resource, $i)), |
---|
510 | 'name' => $case_func(@mysql_field_name($resource, $i)), |
---|
511 | 'type' => @mysql_field_type($resource, $i), |
---|
512 | 'length' => @mysql_field_len($resource, $i), |
---|
513 | 'flags' => @mysql_field_flags($resource, $i), |
---|
514 | ); |
---|
515 | if ($res[$i]['type'] == 'string') { |
---|
516 | $res[$i]['type'] = 'char'; |
---|
517 | } elseif ($res[$i]['type'] == 'unknown') { |
---|
518 | $res[$i]['type'] = 'decimal'; |
---|
519 | } |
---|
520 | $mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]); |
---|
521 | if (PEAR::isError($mdb2type_info)) { |
---|
522 | return $mdb2type_info; |
---|
523 | } |
---|
524 | $res[$i]['mdb2type'] = $mdb2type_info[0][0]; |
---|
525 | if ($mode & MDB2_TABLEINFO_ORDER) { |
---|
526 | $res['order'][$res[$i]['name']] = $i; |
---|
527 | } |
---|
528 | if ($mode & MDB2_TABLEINFO_ORDERTABLE) { |
---|
529 | $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
---|
530 | } |
---|
531 | } |
---|
532 | |
---|
533 | return $res; |
---|
534 | } |
---|
535 | } |
---|
536 | ?> |
---|