1 | <?php |
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2 | // vim: set et ts=4 sw=4 fdm=marker: |
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3 | // +----------------------------------------------------------------------+ |
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4 | // | PHP versions 4 and 5 | |
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5 | // +----------------------------------------------------------------------+ |
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6 | // | Copyright (c) 1998-2008 Manuel Lemos, Tomas V.V.Cox, | |
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7 | // | Stig. S. Bakken, Lukas Smith | |
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8 | // | All rights reserved. | |
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9 | // +----------------------------------------------------------------------+ |
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10 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | |
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11 | // | API as well as database abstraction for PHP applications. | |
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12 | // | This LICENSE is in the BSD license style. | |
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13 | // | | |
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14 | // | Redistribution and use in source and binary forms, with or without | |
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15 | // | modification, are permitted provided that the following conditions | |
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16 | // | are met: | |
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17 | // | | |
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18 | // | Redistributions of source code must retain the above copyright | |
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19 | // | notice, this list of conditions and the following disclaimer. | |
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20 | // | | |
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21 | // | Redistributions in binary form must reproduce the above copyright | |
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22 | // | notice, this list of conditions and the following disclaimer in the | |
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23 | // | documentation and/or other materials provided with the distribution. | |
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24 | // | | |
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25 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | |
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26 | // | Lukas Smith nor the names of his contributors may be used to endorse | |
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27 | // | or promote products derived from this software without specific prior| |
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28 | // | written permission. | |
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29 | // | | |
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30 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
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31 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
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32 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
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33 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
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34 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
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35 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | |
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36 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| |
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37 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | |
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38 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
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39 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| |
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40 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
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41 | // | POSSIBILITY OF SUCH DAMAGE. | |
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42 | // +----------------------------------------------------------------------+ |
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43 | // | Author: Lukas Smith <smith@pooteeweet.org> | |
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44 | // +----------------------------------------------------------------------+ |
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45 | // |
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46 | // $Id: mysql.php,v 1.65 2008/02/22 19:23:49 quipo Exp $ |
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47 | // |
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48 | |
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49 | require_once 'MDB2/Driver/Datatype/Common.php'; |
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50 | |
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51 | /** |
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52 | * MDB2 MySQL driver |
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53 | * |
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54 | * @package MDB2 |
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55 | * @category Database |
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56 | * @author Lukas Smith <smith@pooteeweet.org> |
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57 | */ |
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58 | class MDB2_Driver_Datatype_mysql extends MDB2_Driver_Datatype_Common |
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59 | { |
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60 | // {{{ _getCharsetFieldDeclaration() |
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61 | |
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62 | /** |
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63 | * Obtain DBMS specific SQL code portion needed to set the CHARACTER SET |
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64 | * of a field declaration to be used in statements like CREATE TABLE. |
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65 | * |
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66 | * @param string $charset name of the charset |
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67 | * @return string DBMS specific SQL code portion needed to set the CHARACTER SET |
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68 | * of a field declaration. |
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69 | */ |
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70 | function _getCharsetFieldDeclaration($charset) |
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71 | { |
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72 | return 'CHARACTER SET '.$charset; |
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73 | } |
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74 | |
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75 | // }}} |
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76 | // {{{ _getCollationFieldDeclaration() |
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77 | |
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78 | /** |
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79 | * Obtain DBMS specific SQL code portion needed to set the COLLATION |
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80 | * of a field declaration to be used in statements like CREATE TABLE. |
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81 | * |
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82 | * @param string $collation name of the collation |
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83 | * @return string DBMS specific SQL code portion needed to set the COLLATION |
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84 | * of a field declaration. |
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85 | */ |
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86 | function _getCollationFieldDeclaration($collation) |
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87 | { |
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88 | return 'COLLATE '.$collation; |
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89 | } |
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90 | |
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91 | // }}} |
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92 | // {{{ getTypeDeclaration() |
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93 | |
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94 | /** |
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95 | * Obtain DBMS specific SQL code portion needed to declare an text type |
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96 | * field to be used in statements like CREATE TABLE. |
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97 | * |
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98 | * @param array $field associative array with the name of the properties |
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99 | * of the field being declared as array indexes. Currently, the types |
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100 | * of supported field properties are as follows: |
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101 | * |
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102 | * length |
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103 | * Integer value that determines the maximum length of the text |
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104 | * field. If this argument is missing the field should be |
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105 | * declared to have the longest length allowed by the DBMS. |
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106 | * |
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107 | * default |
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108 | * Text value to be used as default for this field. |
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109 | * |
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110 | * notnull |
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111 | * Boolean flag that indicates whether this field is constrained |
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112 | * to not be set to null. |
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113 | * @return string DBMS specific SQL code portion that should be used to |
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114 | * declare the specified field. |
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115 | * @access public |
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116 | */ |
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117 | function getTypeDeclaration($field) |
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118 | { |
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119 | $db =& $this->getDBInstance(); |
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120 | if (PEAR::isError($db)) { |
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121 | return $db; |
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122 | } |
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123 | |
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124 | switch ($field['type']) { |
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125 | case 'text': |
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126 | if (empty($field['length']) && array_key_exists('default', $field)) { |
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127 | $field['length'] = $db->varchar_max_length; |
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128 | } |
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129 | $length = !empty($field['length']) ? $field['length'] : false; |
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130 | $fixed = !empty($field['fixed']) ? $field['fixed'] : false; |
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131 | return $fixed ? ($length ? 'CHAR('.$length.')' : 'CHAR(255)') |
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132 | : ($length ? 'VARCHAR('.$length.')' : 'TEXT'); |
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133 | case 'clob': |
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134 | if (!empty($field['length'])) { |
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135 | $length = $field['length']; |
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136 | if ($length <= 255) { |
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137 | return 'TINYTEXT'; |
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138 | } elseif ($length <= 65532) { |
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139 | return 'TEXT'; |
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140 | } elseif ($length <= 16777215) { |
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141 | return 'MEDIUMTEXT'; |
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142 | } |
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143 | } |
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144 | return 'LONGTEXT'; |
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145 | case 'blob': |
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146 | if (!empty($field['length'])) { |
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147 | $length = $field['length']; |
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148 | if ($length <= 255) { |
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149 | return 'TINYBLOB'; |
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150 | } elseif ($length <= 65532) { |
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151 | return 'BLOB'; |
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152 | } elseif ($length <= 16777215) { |
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153 | return 'MEDIUMBLOB'; |
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154 | } |
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155 | } |
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156 | return 'LONGBLOB'; |
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157 | case 'integer': |
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158 | if (!empty($field['length'])) { |
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159 | $length = $field['length']; |
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160 | if ($length <= 1) { |
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161 | return 'TINYINT'; |
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162 | } elseif ($length == 2) { |
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163 | return 'SMALLINT'; |
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164 | } elseif ($length == 3) { |
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165 | return 'MEDIUMINT'; |
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166 | } elseif ($length == 4) { |
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167 | return 'INT'; |
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168 | } elseif ($length > 4) { |
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169 | return 'BIGINT'; |
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170 | } |
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171 | } |
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172 | return 'INT'; |
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173 | case 'boolean': |
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174 | return 'TINYINT(1)'; |
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175 | case 'date': |
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176 | return 'DATE'; |
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177 | case 'time': |
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178 | return 'TIME'; |
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179 | case 'timestamp': |
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180 | return 'DATETIME'; |
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181 | case 'float': |
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182 | return 'DOUBLE'; |
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183 | case 'decimal': |
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184 | $length = !empty($field['length']) ? $field['length'] : 18; |
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185 | $scale = !empty($field['scale']) ? $field['scale'] : $db->options['decimal_places']; |
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186 | return 'DECIMAL('.$length.','.$scale.')'; |
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187 | } |
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188 | return ''; |
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189 | } |
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190 | |
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191 | // }}} |
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192 | // {{{ _getIntegerDeclaration() |
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193 | |
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194 | /** |
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195 | * Obtain DBMS specific SQL code portion needed to declare an integer type |
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196 | * field to be used in statements like CREATE TABLE. |
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197 | * |
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198 | * @param string $name name the field to be declared. |
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199 | * @param string $field associative array with the name of the properties |
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200 | * of the field being declared as array indexes. |
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201 | * Currently, the types of supported field |
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202 | * properties are as follows: |
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203 | * |
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204 | * unsigned |
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205 | * Boolean flag that indicates whether the field |
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206 | * should be declared as unsigned integer if |
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207 | * possible. |
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208 | * |
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209 | * default |
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210 | * Integer value to be used as default for this |
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211 | * field. |
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212 | * |
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213 | * notnull |
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214 | * Boolean flag that indicates whether this field is |
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215 | * constrained to not be set to null. |
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216 | * @return string DBMS specific SQL code portion that should be used to |
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217 | * declare the specified field. |
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218 | * @access protected |
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219 | */ |
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220 | function _getIntegerDeclaration($name, $field) |
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221 | { |
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222 | $db =& $this->getDBInstance(); |
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223 | if (PEAR::isError($db)) { |
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224 | return $db; |
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225 | } |
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226 | |
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227 | $default = $autoinc = ''; |
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228 | if (!empty($field['autoincrement'])) { |
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229 | $autoinc = ' AUTO_INCREMENT PRIMARY KEY'; |
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230 | } elseif (array_key_exists('default', $field)) { |
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231 | if ($field['default'] === '') { |
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232 | $field['default'] = empty($field['notnull']) ? null : 0; |
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233 | } |
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234 | $default = ' DEFAULT '.$this->quote($field['default'], 'integer'); |
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235 | } |
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236 | |
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237 | $notnull = empty($field['notnull']) ? '' : ' NOT NULL'; |
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238 | $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED'; |
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239 | $name = $db->quoteIdentifier($name, true); |
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240 | return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull.$autoinc; |
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241 | } |
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242 | |
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243 | // }}} |
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244 | // {{{ _getFloatDeclaration() |
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245 | |
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246 | /** |
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247 | * Obtain DBMS specific SQL code portion needed to declare an float type |
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248 | * field to be used in statements like CREATE TABLE. |
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249 | * |
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250 | * @param string $name name the field to be declared. |
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251 | * @param string $field associative array with the name of the properties |
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252 | * of the field being declared as array indexes. |
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253 | * Currently, the types of supported field |
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254 | * properties are as follows: |
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255 | * |
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256 | * unsigned |
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257 | * Boolean flag that indicates whether the field |
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258 | * should be declared as unsigned float if |
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259 | * possible. |
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260 | * |
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261 | * default |
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262 | * float value to be used as default for this |
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263 | * field. |
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264 | * |
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265 | * notnull |
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266 | * Boolean flag that indicates whether this field is |
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267 | * constrained to not be set to null. |
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268 | * @return string DBMS specific SQL code portion that should be used to |
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269 | * declare the specified field. |
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270 | * @access protected |
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271 | */ |
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272 | function _getFloatDeclaration($name, $field) |
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273 | { |
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274 | // Since AUTO_INCREMENT can be used for integer or floating-point types, |
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275 | // reuse the INTEGER declaration |
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276 | // @see http://bugs.mysql.com/bug.php?id=31032 |
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277 | return $this->_getIntegerDeclaration($name, $field); |
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278 | } |
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279 | |
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280 | // }}} |
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281 | // {{{ _getDecimalDeclaration() |
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282 | |
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283 | /** |
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284 | * Obtain DBMS specific SQL code portion needed to declare an decimal type |
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285 | * field to be used in statements like CREATE TABLE. |
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286 | * |
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287 | * @param string $name name the field to be declared. |
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288 | * @param string $field associative array with the name of the properties |
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289 | * of the field being declared as array indexes. |
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290 | * Currently, the types of supported field |
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291 | * properties are as follows: |
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292 | * |
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293 | * unsigned |
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294 | * Boolean flag that indicates whether the field |
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295 | * should be declared as unsigned integer if |
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296 | * possible. |
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297 | * |
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298 | * default |
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299 | * Decimal value to be used as default for this |
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300 | * field. |
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301 | * |
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302 | * notnull |
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303 | * Boolean flag that indicates whether this field is |
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304 | * constrained to not be set to null. |
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305 | * @return string DBMS specific SQL code portion that should be used to |
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306 | * declare the specified field. |
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307 | * @access protected |
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308 | */ |
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309 | function _getDecimalDeclaration($name, $field) |
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310 | { |
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311 | $db =& $this->getDBInstance(); |
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312 | if (PEAR::isError($db)) { |
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313 | return $db; |
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314 | } |
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315 | |
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316 | $default = ''; |
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317 | if (array_key_exists('default', $field)) { |
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318 | if ($field['default'] === '') { |
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319 | $field['default'] = empty($field['notnull']) ? null : 0; |
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320 | } |
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321 | $default = ' DEFAULT '.$this->quote($field['default'], 'integer'); |
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322 | } elseif (empty($field['notnull'])) { |
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323 | $default = ' DEFAULT NULL'; |
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324 | } |
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325 | |
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326 | $notnull = empty($field['notnull']) ? '' : ' NOT NULL'; |
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327 | $unsigned = empty($field['unsigned']) ? '' : ' UNSIGNED'; |
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328 | $name = $db->quoteIdentifier($name, true); |
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329 | return $name.' '.$this->getTypeDeclaration($field).$unsigned.$default.$notnull; |
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330 | } |
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331 | |
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332 | // }}} |
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333 | // {{{ matchPattern() |
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334 | |
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335 | /** |
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336 | * build a pattern matching string |
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337 | * |
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338 | * @access public |
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339 | * |
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340 | * @param array $pattern even keys are strings, odd are patterns (% and _) |
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341 | * @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future) |
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342 | * @param string $field optional field name that is being matched against |
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343 | * (might be required when emulating ILIKE) |
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344 | * |
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345 | * @return string SQL pattern |
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346 | */ |
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347 | function matchPattern($pattern, $operator = null, $field = null) |
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348 | { |
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349 | $db =& $this->getDBInstance(); |
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350 | if (PEAR::isError($db)) { |
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351 | return $db; |
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352 | } |
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353 | |
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354 | $match = ''; |
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355 | if (!is_null($operator)) { |
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356 | $field = is_null($field) ? '' : $field.' '; |
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357 | $operator = strtoupper($operator); |
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358 | switch ($operator) { |
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359 | // case insensitive |
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360 | case 'ILIKE': |
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361 | $match = $field.'LIKE '; |
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362 | break; |
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363 | // case sensitive |
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364 | case 'LIKE': |
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365 | $match = $field.'LIKE BINARY '; |
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366 | break; |
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367 | default: |
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368 | return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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369 | 'not a supported operator type:'. $operator, __FUNCTION__); |
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370 | } |
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371 | } |
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372 | $match.= "'"; |
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373 | foreach ($pattern as $key => $value) { |
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374 | if ($key % 2) { |
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375 | $match.= $value; |
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376 | } else { |
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377 | $match.= $db->escapePattern($db->escape($value)); |
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378 | } |
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379 | } |
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380 | $match.= "'"; |
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381 | $match.= $this->patternEscapeString(); |
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382 | return $match; |
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383 | } |
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384 | |
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385 | // }}} |
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386 | // {{{ _mapNativeDatatype() |
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387 | |
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388 | /** |
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389 | * Maps a native array description of a field to a MDB2 datatype and length |
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390 | * |
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391 | * @param array $field native field description |
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392 | * @return array containing the various possible types, length, sign, fixed |
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393 | * @access public |
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394 | */ |
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395 | function _mapNativeDatatype($field) |
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396 | { |
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397 | $db_type = strtolower($field['type']); |
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398 | $db_type = strtok($db_type, '(), '); |
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399 | if ($db_type == 'national') { |
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400 | $db_type = strtok('(), '); |
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401 | } |
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402 | if (!empty($field['length'])) { |
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403 | $length = strtok($field['length'], ', '); |
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404 | $decimal = strtok(', '); |
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405 | } else { |
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406 | $length = strtok('(), '); |
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407 | $decimal = strtok('(), '); |
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408 | } |
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409 | $type = array(); |
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410 | $unsigned = $fixed = null; |
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411 | switch ($db_type) { |
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412 | case 'tinyint': |
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413 | $type[] = 'integer'; |
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414 | $type[] = 'boolean'; |
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415 | if (preg_match('/^(is|has)/', $field['name'])) { |
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416 | $type = array_reverse($type); |
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417 | } |
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418 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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419 | $length = 1; |
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420 | break; |
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421 | case 'smallint': |
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422 | $type[] = 'integer'; |
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423 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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424 | $length = 2; |
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425 | break; |
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426 | case 'mediumint': |
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427 | $type[] = 'integer'; |
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428 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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429 | $length = 3; |
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430 | break; |
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431 | case 'int': |
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432 | case 'integer': |
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433 | $type[] = 'integer'; |
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434 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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435 | $length = 4; |
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436 | break; |
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437 | case 'bigint': |
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438 | $type[] = 'integer'; |
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439 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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440 | $length = 8; |
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441 | break; |
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442 | case 'tinytext': |
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443 | case 'mediumtext': |
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444 | case 'longtext': |
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445 | case 'text': |
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446 | case 'varchar': |
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447 | $fixed = false; |
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448 | case 'string': |
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449 | case 'char': |
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450 | $type[] = 'text'; |
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451 | if ($length == '1') { |
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452 | $type[] = 'boolean'; |
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453 | if (preg_match('/^(is|has)/', $field['name'])) { |
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454 | $type = array_reverse($type); |
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455 | } |
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456 | } elseif (strstr($db_type, 'text')) { |
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457 | $type[] = 'clob'; |
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458 | if ($decimal == 'binary') { |
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459 | $type[] = 'blob'; |
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460 | } |
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461 | $type = array_reverse($type); |
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462 | } |
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463 | if ($fixed !== false) { |
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464 | $fixed = true; |
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465 | } |
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466 | break; |
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467 | case 'enum': |
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468 | $type[] = 'text'; |
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469 | preg_match_all('/\'.+\'/U', $field['type'], $matches); |
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470 | $length = 0; |
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471 | $fixed = false; |
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472 | if (is_array($matches)) { |
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473 | foreach ($matches[0] as $value) { |
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474 | $length = max($length, strlen($value)-2); |
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475 | } |
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476 | if ($length == '1' && count($matches[0]) == 2) { |
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477 | $type[] = 'boolean'; |
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478 | if (preg_match('/^(is|has)/', $field['name'])) { |
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479 | $type = array_reverse($type); |
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480 | } |
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481 | } |
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482 | } |
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483 | $type[] = 'integer'; |
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484 | case 'set': |
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485 | $fixed = false; |
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486 | $type[] = 'text'; |
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487 | $type[] = 'integer'; |
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488 | break; |
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489 | case 'date': |
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490 | $type[] = 'date'; |
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491 | $length = null; |
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492 | break; |
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493 | case 'datetime': |
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494 | case 'timestamp': |
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495 | $type[] = 'timestamp'; |
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496 | $length = null; |
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497 | break; |
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498 | case 'time': |
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499 | $type[] = 'time'; |
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500 | $length = null; |
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501 | break; |
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502 | case 'float': |
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503 | case 'double': |
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504 | case 'real': |
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505 | $type[] = 'float'; |
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506 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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507 | break; |
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508 | case 'unknown': |
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509 | case 'decimal': |
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510 | case 'numeric': |
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511 | $type[] = 'decimal'; |
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512 | $unsigned = preg_match('/ unsigned/i', $field['type']); |
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513 | if ($decimal !== false) { |
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514 | $length = $length.','.$decimal; |
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515 | } |
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516 | break; |
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517 | case 'tinyblob': |
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518 | case 'mediumblob': |
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519 | case 'longblob': |
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520 | case 'blob': |
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521 | $type[] = 'blob'; |
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522 | $length = null; |
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523 | break; |
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524 | case 'binary': |
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525 | case 'varbinary': |
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526 | $type[] = 'blob'; |
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527 | break; |
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528 | case 'year': |
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529 | $type[] = 'integer'; |
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530 | $type[] = 'date'; |
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531 | $length = null; |
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532 | break; |
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533 | default: |
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534 | $db =& $this->getDBInstance(); |
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535 | if (PEAR::isError($db)) { |
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536 | return $db; |
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537 | } |
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538 | |
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539 | return $db->raiseError(MDB2_ERROR_UNSUPPORTED, null, null, |
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540 | 'unknown database attribute type: '.$db_type, __FUNCTION__); |
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541 | } |
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542 | |
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543 | if ((int)$length <= 0) { |
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544 | $length = null; |
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545 | } |
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546 | |
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547 | return array($type, $length, $unsigned, $fixed); |
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548 | } |
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549 | |
---|
550 | // }}} |
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551 | } |
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552 | |
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553 | ?> |
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