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Редакция | Автор | № строки | Строка |
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2 | alex-w | 1 | <?php |
2 | |||
3 | /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
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4 | |||
5 | /** |
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6 | * The PEAR DB driver for PHP's mssql extension |
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7 | * for interacting with Microsoft SQL Server databases |
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8 | * |
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9 | * PHP versions 4 and 5 |
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10 | * |
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11 | * LICENSE: This source file is subject to version 3.0 of the PHP license |
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12 | * that is available through the world-wide-web at the following URI: |
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13 | * http://www.php.net/license/3_0.txt. If you did not receive a copy of |
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14 | * the PHP License and are unable to obtain it through the web, please |
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15 | * send a note to license@php.net so we can mail you a copy immediately. |
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16 | * |
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17 | * @category Database |
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18 | * @package DB |
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19 | * @author Sterling Hughes <sterling@php.net> |
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20 | * @author Daniel Convissor <danielc@php.net> |
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21 | * @copyright 1997-2007 The PHP Group |
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22 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
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23 | * @version CVS: $Id: mssql.php,v 1.92 2007/09/21 13:40:41 aharvey Exp $ |
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24 | * @link http://pear.php.net/package/DB |
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25 | */ |
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26 | |||
27 | /** |
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28 | * Obtain the DB_common class so it can be extended from |
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29 | */ |
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30 | require_once 'DB/common.php'; |
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31 | |||
32 | /** |
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33 | * The methods PEAR DB uses to interact with PHP's mssql extension |
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34 | * for interacting with Microsoft SQL Server databases |
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35 | * |
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36 | * These methods overload the ones declared in DB_common. |
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37 | * |
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38 | * DB's mssql driver is only for Microsfoft SQL Server databases. |
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39 | * |
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40 | * If you're connecting to a Sybase database, you MUST specify "sybase" |
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41 | * as the "phptype" in the DSN. |
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42 | * |
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43 | * This class only works correctly if you have compiled PHP using |
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44 | * --with-mssql=[dir_to_FreeTDS]. |
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45 | * |
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46 | * @category Database |
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47 | * @package DB |
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48 | * @author Sterling Hughes <sterling@php.net> |
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49 | * @author Daniel Convissor <danielc@php.net> |
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50 | * @copyright 1997-2007 The PHP Group |
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51 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
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52 | * @version Release: 1.7.13 |
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53 | * @link http://pear.php.net/package/DB |
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54 | */ |
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55 | class DB_mssql extends DB_common |
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56 | { |
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57 | // {{{ properties |
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58 | |||
59 | /** |
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60 | * The DB driver type (mysql, oci8, odbc, etc.) |
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61 | * @var string |
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62 | */ |
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63 | var $phptype = 'mssql'; |
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64 | |||
65 | /** |
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66 | * The database syntax variant to be used (db2, access, etc.), if any |
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67 | * @var string |
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68 | */ |
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69 | var $dbsyntax = 'mssql'; |
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70 | |||
71 | /** |
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72 | * The capabilities of this DB implementation |
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73 | * |
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74 | * The 'new_link' element contains the PHP version that first provided |
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75 | * new_link support for this DBMS. Contains false if it's unsupported. |
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76 | * |
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77 | * Meaning of the 'limit' element: |
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78 | * + 'emulate' = emulate with fetch row by number |
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79 | * + 'alter' = alter the query |
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80 | * + false = skip rows |
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81 | * |
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82 | * @var array |
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83 | */ |
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84 | var $features = array( |
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85 | 'limit' => 'emulate', |
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86 | 'new_link' => false, |
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87 | 'numrows' => true, |
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88 | 'pconnect' => true, |
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89 | 'prepare' => false, |
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90 | 'ssl' => false, |
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91 | 'transactions' => true, |
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92 | ); |
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93 | |||
94 | /** |
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95 | * A mapping of native error codes to DB error codes |
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96 | * @var array |
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97 | */ |
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98 | // XXX Add here error codes ie: 'S100E' => DB_ERROR_SYNTAX |
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99 | var $errorcode_map = array( |
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100 | 102 => DB_ERROR_SYNTAX, |
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101 | 110 => DB_ERROR_VALUE_COUNT_ON_ROW, |
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102 | 155 => DB_ERROR_NOSUCHFIELD, |
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103 | 156 => DB_ERROR_SYNTAX, |
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104 | 170 => DB_ERROR_SYNTAX, |
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105 | 207 => DB_ERROR_NOSUCHFIELD, |
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106 | 208 => DB_ERROR_NOSUCHTABLE, |
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107 | 245 => DB_ERROR_INVALID_NUMBER, |
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108 | 319 => DB_ERROR_SYNTAX, |
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109 | 321 => DB_ERROR_NOSUCHFIELD, |
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110 | 325 => DB_ERROR_SYNTAX, |
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111 | 336 => DB_ERROR_SYNTAX, |
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112 | 515 => DB_ERROR_CONSTRAINT_NOT_NULL, |
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113 | 547 => DB_ERROR_CONSTRAINT, |
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114 | 1018 => DB_ERROR_SYNTAX, |
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115 | 1035 => DB_ERROR_SYNTAX, |
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116 | 1913 => DB_ERROR_ALREADY_EXISTS, |
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117 | 2209 => DB_ERROR_SYNTAX, |
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118 | 2223 => DB_ERROR_SYNTAX, |
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119 | 2248 => DB_ERROR_SYNTAX, |
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120 | 2256 => DB_ERROR_SYNTAX, |
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121 | 2257 => DB_ERROR_SYNTAX, |
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122 | 2627 => DB_ERROR_CONSTRAINT, |
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123 | 2714 => DB_ERROR_ALREADY_EXISTS, |
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124 | 3607 => DB_ERROR_DIVZERO, |
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125 | 3701 => DB_ERROR_NOSUCHTABLE, |
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126 | 7630 => DB_ERROR_SYNTAX, |
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127 | 8134 => DB_ERROR_DIVZERO, |
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128 | 9303 => DB_ERROR_SYNTAX, |
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129 | 9317 => DB_ERROR_SYNTAX, |
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130 | 9318 => DB_ERROR_SYNTAX, |
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131 | 9331 => DB_ERROR_SYNTAX, |
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132 | 9332 => DB_ERROR_SYNTAX, |
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133 | 15253 => DB_ERROR_SYNTAX, |
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134 | ); |
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135 | |||
136 | /** |
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137 | * The raw database connection created by PHP |
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138 | * @var resource |
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139 | */ |
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140 | var $connection; |
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141 | |||
142 | /** |
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143 | * The DSN information for connecting to a database |
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144 | * @var array |
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145 | */ |
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146 | var $dsn = array(); |
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147 | |||
148 | |||
149 | /** |
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150 | * Should data manipulation queries be committed automatically? |
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151 | * @var bool |
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152 | * @access private |
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153 | */ |
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154 | var $autocommit = true; |
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155 | |||
156 | /** |
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157 | * The quantity of transactions begun |
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158 | * |
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159 | * {@internal While this is private, it can't actually be designated |
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160 | * private in PHP 5 because it is directly accessed in the test suite.}} |
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161 | * |
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162 | * @var integer |
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163 | * @access private |
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164 | */ |
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165 | var $transaction_opcount = 0; |
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166 | |||
167 | /** |
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168 | * The database specified in the DSN |
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169 | * |
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170 | * It's a fix to allow calls to different databases in the same script. |
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171 | * |
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172 | * @var string |
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173 | * @access private |
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174 | */ |
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175 | var $_db = null; |
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176 | |||
177 | |||
178 | // }}} |
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179 | // {{{ constructor |
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180 | |||
181 | /** |
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182 | * This constructor calls <kbd>$this->DB_common()</kbd> |
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183 | * |
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184 | * @return void |
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185 | */ |
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186 | function DB_mssql() |
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187 | { |
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188 | $this->DB_common(); |
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189 | } |
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190 | |||
191 | // }}} |
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192 | // {{{ connect() |
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193 | |||
194 | /** |
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195 | * Connect to the database server, log in and open the database |
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196 | * |
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197 | * Don't call this method directly. Use DB::connect() instead. |
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198 | * |
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199 | * @param array $dsn the data source name |
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200 | * @param bool $persistent should the connection be persistent? |
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201 | * |
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202 | * @return int DB_OK on success. A DB_Error object on failure. |
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203 | */ |
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204 | function connect($dsn, $persistent = false) |
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205 | { |
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206 | if (!PEAR::loadExtension('mssql') && !PEAR::loadExtension('sybase') |
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207 | && !PEAR::loadExtension('sybase_ct')) |
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208 | { |
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209 | return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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210 | } |
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211 | |||
212 | $this->dsn = $dsn; |
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213 | if ($dsn['dbsyntax']) { |
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214 | $this->dbsyntax = $dsn['dbsyntax']; |
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215 | } |
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216 | |||
217 | $params = array( |
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218 | $dsn['hostspec'] ? $dsn['hostspec'] : 'localhost', |
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219 | $dsn['username'] ? $dsn['username'] : null, |
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220 | $dsn['password'] ? $dsn['password'] : null, |
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221 | ); |
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222 | if ($dsn['port']) { |
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223 | $params[0] .= ((substr(PHP_OS, 0, 3) == 'WIN') ? ',' : ':') |
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224 | . $dsn['port']; |
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225 | } |
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226 | |||
227 | $connect_function = $persistent ? 'mssql_pconnect' : 'mssql_connect'; |
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228 | |||
229 | $this->connection = @call_user_func_array($connect_function, $params); |
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230 | |||
231 | if (!$this->connection) { |
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232 | return $this->raiseError(DB_ERROR_CONNECT_FAILED, |
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233 | null, null, null, |
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234 | @mssql_get_last_message()); |
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235 | } |
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236 | if ($dsn['database']) { |
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237 | if (!@mssql_select_db($dsn['database'], $this->connection)) { |
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238 | return $this->raiseError(DB_ERROR_NODBSELECTED, |
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239 | null, null, null, |
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240 | @mssql_get_last_message()); |
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241 | } |
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242 | $this->_db = $dsn['database']; |
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243 | } |
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244 | return DB_OK; |
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245 | } |
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246 | |||
247 | // }}} |
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248 | // {{{ disconnect() |
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249 | |||
250 | /** |
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251 | * Disconnects from the database server |
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252 | * |
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253 | * @return bool TRUE on success, FALSE on failure |
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254 | */ |
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255 | function disconnect() |
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256 | { |
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257 | $ret = @mssql_close($this->connection); |
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258 | $this->connection = null; |
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259 | return $ret; |
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260 | } |
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261 | |||
262 | // }}} |
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263 | // {{{ simpleQuery() |
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264 | |||
265 | /** |
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266 | * Sends a query to the database server |
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267 | * |
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268 | * @param string the SQL query string |
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269 | * |
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270 | * @return mixed + a PHP result resrouce for successful SELECT queries |
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271 | * + the DB_OK constant for other successful queries |
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272 | * + a DB_Error object on failure |
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273 | */ |
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274 | function simpleQuery($query) |
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275 | { |
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276 | $ismanip = $this->_checkManip($query); |
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277 | $this->last_query = $query; |
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278 | if (!@mssql_select_db($this->_db, $this->connection)) { |
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279 | return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED); |
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280 | } |
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281 | $query = $this->modifyQuery($query); |
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282 | if (!$this->autocommit && $ismanip) { |
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283 | if ($this->transaction_opcount == 0) { |
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284 | $result = @mssql_query('BEGIN TRAN', $this->connection); |
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285 | if (!$result) { |
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286 | return $this->mssqlRaiseError(); |
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287 | } |
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288 | } |
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289 | $this->transaction_opcount++; |
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290 | } |
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291 | $result = @mssql_query($query, $this->connection); |
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292 | if (!$result) { |
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293 | return $this->mssqlRaiseError(); |
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294 | } |
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295 | // Determine which queries that should return data, and which |
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296 | // should return an error code only. |
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297 | return $ismanip ? DB_OK : $result; |
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298 | } |
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299 | |||
300 | // }}} |
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301 | // {{{ nextResult() |
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302 | |||
303 | /** |
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304 | * Move the internal mssql result pointer to the next available result |
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305 | * |
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306 | * @param a valid fbsql result resource |
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307 | * |
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308 | * @access public |
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309 | * |
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310 | * @return true if a result is available otherwise return false |
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311 | */ |
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312 | function nextResult($result) |
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313 | { |
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314 | return @mssql_next_result($result); |
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315 | } |
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316 | |||
317 | // }}} |
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318 | // {{{ fetchInto() |
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319 | |||
320 | /** |
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321 | * Places a row from the result set into the given array |
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322 | * |
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323 | * Formating of the array and the data therein are configurable. |
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324 | * See DB_result::fetchInto() for more information. |
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325 | * |
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326 | * This method is not meant to be called directly. Use |
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327 | * DB_result::fetchInto() instead. It can't be declared "protected" |
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328 | * because DB_result is a separate object. |
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329 | * |
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330 | * @param resource $result the query result resource |
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331 | * @param array $arr the referenced array to put the data in |
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332 | * @param int $fetchmode how the resulting array should be indexed |
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333 | * @param int $rownum the row number to fetch (0 = first row) |
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334 | * |
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335 | * @return mixed DB_OK on success, NULL when the end of a result set is |
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336 | * reached or on failure |
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337 | * |
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338 | * @see DB_result::fetchInto() |
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339 | */ |
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340 | function fetchInto($result, &$arr, $fetchmode, $rownum = null) |
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341 | { |
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342 | if ($rownum !== null) { |
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343 | if (!@mssql_data_seek($result, $rownum)) { |
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344 | return null; |
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345 | } |
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346 | } |
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347 | if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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348 | $arr = @mssql_fetch_assoc($result); |
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349 | if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { |
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350 | $arr = array_change_key_case($arr, CASE_LOWER); |
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351 | } |
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352 | } else { |
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353 | $arr = @mssql_fetch_row($result); |
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354 | } |
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355 | if (!$arr) { |
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356 | return null; |
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357 | } |
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358 | if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { |
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359 | $this->_rtrimArrayValues($arr); |
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360 | } |
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361 | if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { |
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362 | $this->_convertNullArrayValuesToEmpty($arr); |
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363 | } |
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364 | return DB_OK; |
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365 | } |
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366 | |||
367 | // }}} |
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368 | // {{{ freeResult() |
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369 | |||
370 | /** |
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371 | * Deletes the result set and frees the memory occupied by the result set |
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372 | * |
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373 | * This method is not meant to be called directly. Use |
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374 | * DB_result::free() instead. It can't be declared "protected" |
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375 | * because DB_result is a separate object. |
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376 | * |
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377 | * @param resource $result PHP's query result resource |
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378 | * |
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379 | * @return bool TRUE on success, FALSE if $result is invalid |
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380 | * |
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381 | * @see DB_result::free() |
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382 | */ |
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383 | function freeResult($result) |
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384 | { |
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385 | return is_resource($result) ? mssql_free_result($result) : false; |
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386 | } |
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387 | |||
388 | // }}} |
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389 | // {{{ numCols() |
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390 | |||
391 | /** |
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392 | * Gets the number of columns in a result set |
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393 | * |
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394 | * This method is not meant to be called directly. Use |
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395 | * DB_result::numCols() instead. It can't be declared "protected" |
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396 | * because DB_result is a separate object. |
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397 | * |
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398 | * @param resource $result PHP's query result resource |
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399 | * |
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400 | * @return int the number of columns. A DB_Error object on failure. |
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401 | * |
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402 | * @see DB_result::numCols() |
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403 | */ |
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404 | function numCols($result) |
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405 | { |
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406 | $cols = @mssql_num_fields($result); |
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407 | if (!$cols) { |
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408 | return $this->mssqlRaiseError(); |
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409 | } |
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410 | return $cols; |
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411 | } |
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412 | |||
413 | // }}} |
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414 | // {{{ numRows() |
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415 | |||
416 | /** |
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417 | * Gets the number of rows in a result set |
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418 | * |
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419 | * This method is not meant to be called directly. Use |
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420 | * DB_result::numRows() instead. It can't be declared "protected" |
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421 | * because DB_result is a separate object. |
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422 | * |
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423 | * @param resource $result PHP's query result resource |
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424 | * |
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425 | * @return int the number of rows. A DB_Error object on failure. |
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426 | * |
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427 | * @see DB_result::numRows() |
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428 | */ |
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429 | function numRows($result) |
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430 | { |
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431 | $rows = @mssql_num_rows($result); |
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432 | if ($rows === false) { |
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433 | return $this->mssqlRaiseError(); |
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434 | } |
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435 | return $rows; |
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436 | } |
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437 | |||
438 | // }}} |
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439 | // {{{ autoCommit() |
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440 | |||
441 | /** |
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442 | * Enables or disables automatic commits |
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443 | * |
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444 | * @param bool $onoff true turns it on, false turns it off |
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445 | * |
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446 | * @return int DB_OK on success. A DB_Error object if the driver |
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447 | * doesn't support auto-committing transactions. |
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448 | */ |
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449 | function autoCommit($onoff = false) |
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450 | { |
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451 | // XXX if $this->transaction_opcount > 0, we should probably |
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452 | // issue a warning here. |
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453 | $this->autocommit = $onoff ? true : false; |
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454 | return DB_OK; |
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455 | } |
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456 | |||
457 | // }}} |
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458 | // {{{ commit() |
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459 | |||
460 | /** |
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461 | * Commits the current transaction |
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462 | * |
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463 | * @return int DB_OK on success. A DB_Error object on failure. |
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464 | */ |
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465 | function commit() |
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466 | { |
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467 | if ($this->transaction_opcount > 0) { |
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468 | if (!@mssql_select_db($this->_db, $this->connection)) { |
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469 | return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED); |
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470 | } |
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471 | $result = @mssql_query('COMMIT TRAN', $this->connection); |
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472 | $this->transaction_opcount = 0; |
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473 | if (!$result) { |
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474 | return $this->mssqlRaiseError(); |
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475 | } |
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476 | } |
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477 | return DB_OK; |
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478 | } |
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479 | |||
480 | // }}} |
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481 | // {{{ rollback() |
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482 | |||
483 | /** |
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484 | * Reverts the current transaction |
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485 | * |
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486 | * @return int DB_OK on success. A DB_Error object on failure. |
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487 | */ |
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488 | function rollback() |
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489 | { |
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490 | if ($this->transaction_opcount > 0) { |
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491 | if (!@mssql_select_db($this->_db, $this->connection)) { |
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492 | return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED); |
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493 | } |
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494 | $result = @mssql_query('ROLLBACK TRAN', $this->connection); |
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495 | $this->transaction_opcount = 0; |
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496 | if (!$result) { |
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497 | return $this->mssqlRaiseError(); |
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498 | } |
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499 | } |
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500 | return DB_OK; |
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501 | } |
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502 | |||
503 | // }}} |
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504 | // {{{ affectedRows() |
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505 | |||
506 | /** |
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507 | * Determines the number of rows affected by a data maniuplation query |
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508 | * |
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509 | * 0 is returned for queries that don't manipulate data. |
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510 | * |
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511 | * @return int the number of rows. A DB_Error object on failure. |
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512 | */ |
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513 | function affectedRows() |
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514 | { |
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515 | if ($this->_last_query_manip) { |
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516 | $res = @mssql_query('select @@rowcount', $this->connection); |
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517 | if (!$res) { |
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518 | return $this->mssqlRaiseError(); |
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519 | } |
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520 | $ar = @mssql_fetch_row($res); |
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521 | if (!$ar) { |
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522 | $result = 0; |
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523 | } else { |
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524 | @mssql_free_result($res); |
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525 | $result = $ar[0]; |
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526 | } |
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527 | } else { |
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528 | $result = 0; |
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529 | } |
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530 | return $result; |
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531 | } |
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532 | |||
533 | // }}} |
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534 | // {{{ nextId() |
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535 | |||
536 | /** |
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537 | * Returns the next free id in a sequence |
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538 | * |
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539 | * @param string $seq_name name of the sequence |
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540 | * @param boolean $ondemand when true, the seqence is automatically |
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541 | * created if it does not exist |
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542 | * |
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543 | * @return int the next id number in the sequence. |
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544 | * A DB_Error object on failure. |
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545 | * |
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546 | * @see DB_common::nextID(), DB_common::getSequenceName(), |
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547 | * DB_mssql::createSequence(), DB_mssql::dropSequence() |
||
548 | */ |
||
549 | function nextId($seq_name, $ondemand = true) |
||
550 | { |
||
551 | $seqname = $this->getSequenceName($seq_name); |
||
552 | if (!@mssql_select_db($this->_db, $this->connection)) { |
||
553 | return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED); |
||
554 | } |
||
555 | $repeat = 0; |
||
556 | do { |
||
557 | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
||
558 | $result = $this->query("INSERT INTO $seqname (vapor) VALUES (0)"); |
||
559 | $this->popErrorHandling(); |
||
560 | if ($ondemand && DB::isError($result) && |
||
561 | ($result->getCode() == DB_ERROR || $result->getCode() == DB_ERROR_NOSUCHTABLE)) |
||
562 | { |
||
563 | $repeat = 1; |
||
564 | $result = $this->createSequence($seq_name); |
||
565 | if (DB::isError($result)) { |
||
566 | return $this->raiseError($result); |
||
567 | } |
||
568 | } elseif (!DB::isError($result)) { |
||
569 | $result = $this->query("SELECT IDENT_CURRENT('$seqname')"); |
||
570 | if (DB::isError($result)) { |
||
571 | /* Fallback code for MS SQL Server 7.0, which doesn't have |
||
572 | * IDENT_CURRENT. This is *not* safe for concurrent |
||
573 | * requests, and really, if you're using it, you're in a |
||
574 | * world of hurt. Nevertheless, it's here to ensure BC. See |
||
575 | * bug #181 for the gory details.*/ |
||
576 | $result = $this->query("SELECT @@IDENTITY FROM $seqname"); |
||
577 | } |
||
578 | $repeat = 0; |
||
579 | } else { |
||
580 | $repeat = false; |
||
581 | } |
||
582 | } while ($repeat); |
||
583 | if (DB::isError($result)) { |
||
584 | return $this->raiseError($result); |
||
585 | } |
||
586 | $result = $result->fetchRow(DB_FETCHMODE_ORDERED); |
||
587 | return $result[0]; |
||
588 | } |
||
589 | |||
590 | /** |
||
591 | * Creates a new sequence |
||
592 | * |
||
593 | * @param string $seq_name name of the new sequence |
||
594 | * |
||
595 | * @return int DB_OK on success. A DB_Error object on failure. |
||
596 | * |
||
597 | * @see DB_common::createSequence(), DB_common::getSequenceName(), |
||
598 | * DB_mssql::nextID(), DB_mssql::dropSequence() |
||
599 | */ |
||
600 | function createSequence($seq_name) |
||
601 | { |
||
602 | return $this->query('CREATE TABLE ' |
||
603 | . $this->getSequenceName($seq_name) |
||
604 | . ' ([id] [int] IDENTITY (1, 1) NOT NULL,' |
||
605 | . ' [vapor] [int] NULL)'); |
||
606 | } |
||
607 | |||
608 | // }}} |
||
609 | // {{{ dropSequence() |
||
610 | |||
611 | /** |
||
612 | * Deletes a sequence |
||
613 | * |
||
614 | * @param string $seq_name name of the sequence to be deleted |
||
615 | * |
||
616 | * @return int DB_OK on success. A DB_Error object on failure. |
||
617 | * |
||
618 | * @see DB_common::dropSequence(), DB_common::getSequenceName(), |
||
619 | * DB_mssql::nextID(), DB_mssql::createSequence() |
||
620 | */ |
||
621 | function dropSequence($seq_name) |
||
622 | { |
||
623 | return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name)); |
||
624 | } |
||
625 | |||
626 | // }}} |
||
627 | // {{{ quoteIdentifier() |
||
628 | |||
629 | /** |
||
630 | * Quotes a string so it can be safely used as a table or column name |
||
631 | * |
||
632 | * @param string $str identifier name to be quoted |
||
633 | * |
||
634 | * @return string quoted identifier string |
||
635 | * |
||
636 | * @see DB_common::quoteIdentifier() |
||
637 | * @since Method available since Release 1.6.0 |
||
638 | */ |
||
639 | function quoteIdentifier($str) |
||
640 | { |
||
641 | return '[' . str_replace(']', ']]', $str) . ']'; |
||
642 | } |
||
643 | |||
644 | // }}} |
||
645 | // {{{ mssqlRaiseError() |
||
646 | |||
647 | /** |
||
648 | * Produces a DB_Error object regarding the current problem |
||
649 | * |
||
650 | * @param int $errno if the error is being manually raised pass a |
||
651 | * DB_ERROR* constant here. If this isn't passed |
||
652 | * the error information gathered from the DBMS. |
||
653 | * |
||
654 | * @return object the DB_Error object |
||
655 | * |
||
656 | * @see DB_common::raiseError(), |
||
657 | * DB_mssql::errorNative(), DB_mssql::errorCode() |
||
658 | */ |
||
659 | function mssqlRaiseError($code = null) |
||
660 | { |
||
661 | $message = @mssql_get_last_message(); |
||
662 | if (!$code) { |
||
663 | $code = $this->errorNative(); |
||
664 | } |
||
665 | return $this->raiseError($this->errorCode($code, $message), |
||
666 | null, null, null, "$code - $message"); |
||
667 | } |
||
668 | |||
669 | // }}} |
||
670 | // {{{ errorNative() |
||
671 | |||
672 | /** |
||
673 | * Gets the DBMS' native error code produced by the last query |
||
674 | * |
||
675 | * @return int the DBMS' error code |
||
676 | */ |
||
677 | function errorNative() |
||
678 | { |
||
679 | $res = @mssql_query('select @@ERROR as ErrorCode', $this->connection); |
||
680 | if (!$res) { |
||
681 | return DB_ERROR; |
||
682 | } |
||
683 | $row = @mssql_fetch_row($res); |
||
684 | return $row[0]; |
||
685 | } |
||
686 | |||
687 | // }}} |
||
688 | // {{{ errorCode() |
||
689 | |||
690 | /** |
||
691 | * Determines PEAR::DB error code from mssql's native codes. |
||
692 | * |
||
693 | * If <var>$nativecode</var> isn't known yet, it will be looked up. |
||
694 | * |
||
695 | * @param mixed $nativecode mssql error code, if known |
||
696 | * @return integer an error number from a DB error constant |
||
697 | * @see errorNative() |
||
698 | */ |
||
699 | function errorCode($nativecode = null, $msg = '') |
||
700 | { |
||
701 | if (!$nativecode) { |
||
702 | $nativecode = $this->errorNative(); |
||
703 | } |
||
704 | if (isset($this->errorcode_map[$nativecode])) { |
||
705 | if ($nativecode == 3701 |
||
706 | && preg_match('/Cannot drop the index/i', $msg)) |
||
707 | { |
||
708 | return DB_ERROR_NOT_FOUND; |
||
709 | } |
||
710 | return $this->errorcode_map[$nativecode]; |
||
711 | } else { |
||
712 | return DB_ERROR; |
||
713 | } |
||
714 | } |
||
715 | |||
716 | // }}} |
||
717 | // {{{ tableInfo() |
||
718 | |||
719 | /** |
||
720 | * Returns information about a table or a result set |
||
721 | * |
||
722 | * NOTE: only supports 'table' and 'flags' if <var>$result</var> |
||
723 | * is a table name. |
||
724 | * |
||
725 | * @param object|string $result DB_result object from a query or a |
||
726 | * string containing the name of a table. |
||
727 | * While this also accepts a query result |
||
728 | * resource identifier, this behavior is |
||
729 | * deprecated. |
||
730 | * @param int $mode a valid tableInfo mode |
||
731 | * |
||
732 | * @return array an associative array with the information requested. |
||
733 | * A DB_Error object on failure. |
||
734 | * |
||
735 | * @see DB_common::tableInfo() |
||
736 | */ |
||
737 | function tableInfo($result, $mode = null) |
||
738 | { |
||
739 | if (is_string($result)) { |
||
740 | /* |
||
741 | * Probably received a table name. |
||
742 | * Create a result resource identifier. |
||
743 | */ |
||
744 | if (!@mssql_select_db($this->_db, $this->connection)) { |
||
745 | return $this->mssqlRaiseError(DB_ERROR_NODBSELECTED); |
||
746 | } |
||
747 | $id = @mssql_query("SELECT * FROM $result WHERE 1=0", |
||
748 | $this->connection); |
||
749 | $got_string = true; |
||
750 | } elseif (isset($result->result)) { |
||
751 | /* |
||
752 | * Probably received a result object. |
||
753 | * Extract the result resource identifier. |
||
754 | */ |
||
755 | $id = $result->result; |
||
756 | $got_string = false; |
||
757 | } else { |
||
758 | /* |
||
759 | * Probably received a result resource identifier. |
||
760 | * Copy it. |
||
761 | * Deprecated. Here for compatibility only. |
||
762 | */ |
||
763 | $id = $result; |
||
764 | $got_string = false; |
||
765 | } |
||
766 | |||
767 | if (!is_resource($id)) { |
||
768 | return $this->mssqlRaiseError(DB_ERROR_NEED_MORE_DATA); |
||
769 | } |
||
770 | |||
771 | if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { |
||
772 | $case_func = 'strtolower'; |
||
773 | } else { |
||
774 | $case_func = 'strval'; |
||
775 | } |
||
776 | |||
777 | $count = @mssql_num_fields($id); |
||
778 | $res = array(); |
||
779 | |||
780 | if ($mode) { |
||
781 | $res['num_fields'] = $count; |
||
782 | } |
||
783 | |||
784 | for ($i = 0; $i < $count; $i++) { |
||
785 | if ($got_string) { |
||
786 | $flags = $this->_mssql_field_flags($result, |
||
787 | @mssql_field_name($id, $i)); |
||
788 | if (DB::isError($flags)) { |
||
789 | return $flags; |
||
790 | } |
||
791 | } else { |
||
792 | $flags = ''; |
||
793 | } |
||
794 | |||
795 | $res[$i] = array( |
||
796 | 'table' => $got_string ? $case_func($result) : '', |
||
797 | 'name' => $case_func(@mssql_field_name($id, $i)), |
||
798 | 'type' => @mssql_field_type($id, $i), |
||
799 | 'len' => @mssql_field_length($id, $i), |
||
800 | 'flags' => $flags, |
||
801 | ); |
||
802 | if ($mode & DB_TABLEINFO_ORDER) { |
||
803 | $res['order'][$res[$i]['name']] = $i; |
||
804 | } |
||
805 | if ($mode & DB_TABLEINFO_ORDERTABLE) { |
||
806 | $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
||
807 | } |
||
808 | } |
||
809 | |||
810 | // free the result only if we were called on a table |
||
811 | if ($got_string) { |
||
812 | @mssql_free_result($id); |
||
813 | } |
||
814 | return $res; |
||
815 | } |
||
816 | |||
817 | // }}} |
||
818 | // {{{ _mssql_field_flags() |
||
819 | |||
820 | /** |
||
821 | * Get a column's flags |
||
822 | * |
||
823 | * Supports "not_null", "primary_key", |
||
824 | * "auto_increment" (mssql identity), "timestamp" (mssql timestamp), |
||
825 | * "unique_key" (mssql unique index, unique check or primary_key) and |
||
826 | * "multiple_key" (multikey index) |
||
827 | * |
||
828 | * mssql timestamp is NOT similar to the mysql timestamp so this is maybe |
||
829 | * not useful at all - is the behaviour of mysql_field_flags that primary |
||
830 | * keys are alway unique? is the interpretation of multiple_key correct? |
||
831 | * |
||
832 | * @param string $table the table name |
||
833 | * @param string $column the field name |
||
834 | * |
||
835 | * @return string the flags |
||
836 | * |
||
837 | * @access private |
||
838 | * @author Joern Barthel <j_barthel@web.de> |
||
839 | */ |
||
840 | function _mssql_field_flags($table, $column) |
||
841 | { |
||
842 | static $tableName = null; |
||
843 | static $flags = array(); |
||
844 | |||
845 | if ($table != $tableName) { |
||
846 | |||
847 | $flags = array(); |
||
848 | $tableName = $table; |
||
849 | |||
850 | // get unique and primary keys |
||
851 | $res = $this->getAll("EXEC SP_HELPINDEX $table", DB_FETCHMODE_ASSOC); |
||
852 | if (DB::isError($res)) { |
||
853 | return $res; |
||
854 | } |
||
855 | |||
856 | foreach ($res as $val) { |
||
857 | $keys = explode(', ', $val['index_keys']); |
||
858 | |||
859 | if (sizeof($keys) > 1) { |
||
860 | foreach ($keys as $key) { |
||
861 | $this->_add_flag($flags[$key], 'multiple_key'); |
||
862 | } |
||
863 | } |
||
864 | |||
865 | if (strpos($val['index_description'], 'primary key')) { |
||
866 | foreach ($keys as $key) { |
||
867 | $this->_add_flag($flags[$key], 'primary_key'); |
||
868 | } |
||
869 | } elseif (strpos($val['index_description'], 'unique')) { |
||
870 | foreach ($keys as $key) { |
||
871 | $this->_add_flag($flags[$key], 'unique_key'); |
||
872 | } |
||
873 | } |
||
874 | } |
||
875 | |||
876 | // get auto_increment, not_null and timestamp |
||
877 | $res = $this->getAll("EXEC SP_COLUMNS $table", DB_FETCHMODE_ASSOC); |
||
878 | if (DB::isError($res)) { |
||
879 | return $res; |
||
880 | } |
||
881 | |||
882 | foreach ($res as $val) { |
||
883 | $val = array_change_key_case($val, CASE_LOWER); |
||
884 | if ($val['nullable'] == '0') { |
||
885 | $this->_add_flag($flags[$val['column_name']], 'not_null'); |
||
886 | } |
||
887 | if (strpos($val['type_name'], 'identity')) { |
||
888 | $this->_add_flag($flags[$val['column_name']], 'auto_increment'); |
||
889 | } |
||
890 | if (strpos($val['type_name'], 'timestamp')) { |
||
891 | $this->_add_flag($flags[$val['column_name']], 'timestamp'); |
||
892 | } |
||
893 | } |
||
894 | } |
||
895 | |||
896 | if (array_key_exists($column, $flags)) { |
||
897 | return(implode(' ', $flags[$column])); |
||
898 | } |
||
899 | return ''; |
||
900 | } |
||
901 | |||
902 | // }}} |
||
903 | // {{{ _add_flag() |
||
904 | |||
905 | /** |
||
906 | * Adds a string to the flags array if the flag is not yet in there |
||
907 | * - if there is no flag present the array is created |
||
908 | * |
||
909 | * @param array &$array the reference to the flag-array |
||
910 | * @param string $value the flag value |
||
911 | * |
||
912 | * @return void |
||
913 | * |
||
914 | * @access private |
||
915 | * @author Joern Barthel <j_barthel@web.de> |
||
916 | */ |
||
917 | function _add_flag(&$array, $value) |
||
918 | { |
||
919 | if (!is_array($array)) { |
||
920 | $array = array($value); |
||
921 | } elseif (!in_array($value, $array)) { |
||
922 | array_push($array, $value); |
||
923 | } |
||
924 | } |
||
925 | |||
926 | // }}} |
||
927 | // {{{ getSpecialQuery() |
||
928 | |||
929 | /** |
||
930 | * Obtains the query string needed for listing a given type of objects |
||
931 | * |
||
932 | * @param string $type the kind of objects you want to retrieve |
||
933 | * |
||
934 | * @return string the SQL query string or null if the driver doesn't |
||
935 | * support the object type requested |
||
936 | * |
||
937 | * @access protected |
||
938 | * @see DB_common::getListOf() |
||
939 | */ |
||
940 | function getSpecialQuery($type) |
||
941 | { |
||
942 | switch ($type) { |
||
943 | case 'tables': |
||
944 | return "SELECT name FROM sysobjects WHERE type = 'U'" |
||
945 | . ' ORDER BY name'; |
||
946 | case 'views': |
||
947 | return "SELECT name FROM sysobjects WHERE type = 'V'"; |
||
948 | default: |
||
949 | return null; |
||
950 | } |
||
951 | } |
||
952 | |||
953 | // }}} |
||
954 | } |
||
955 | |||
956 | /* |
||
957 | * Local variables: |
||
958 | * tab-width: 4 |
||
959 | * c-basic-offset: 4 |
||
960 | * End: |
||
961 | */ |
||
962 | |||
963 | ?> |