| 1 | <?php |
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| 2 | |
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| 3 | /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
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| 4 | |
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| 5 | /** |
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| 6 | * The PEAR DB driver for PHP's odbc extension |
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| 7 | * for interacting with databases via ODBC connections |
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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 [email protected] 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 Stig Bakken <[email protected]> |
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| 20 | * @author Daniel Convissor <[email protected]> |
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| 21 | * @copyright 1997-2005 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: $Id$ |
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| 24 | * @link http://pear.php.net/package/DB |
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| 25 | */ |
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| 26 | |
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| 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 | |
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| 32 | /** |
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| 33 | * The methods PEAR DB uses to interact with PHP's odbc extension |
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| 34 | * for interacting with databases via ODBC connections |
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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 | * More info on ODBC errors could be found here: |
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| 39 | * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/trblsql/tr_err_odbc_5stz.asp |
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| 40 | * |
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| 41 | * @category Database |
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| 42 | * @package DB |
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| 43 | * @author Stig Bakken <[email protected]> |
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| 44 | * @author Daniel Convissor <[email protected]> |
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| 45 | * @copyright 1997-2005 The PHP Group |
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| 46 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
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| 47 | * @version Release: @package_version@ |
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| 48 | * @link http://pear.php.net/package/DB |
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| 49 | */ |
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| 50 | class DB_odbc extends DB_common |
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| 51 | { |
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| 52 | // {{{ properties |
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| 53 | |
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| 54 | /** |
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| 55 | * The DB driver type (mysql, oci8, odbc, etc.) |
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| 56 | * @var string |
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| 57 | */ |
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| 58 | var $phptype = 'odbc'; |
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| 59 | |
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| 60 | /** |
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| 61 | * The database syntax variant to be used (db2, access, etc.), if any |
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| 62 | * @var string |
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| 63 | */ |
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| 64 | var $dbsyntax = 'sql92'; |
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| 65 | |
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| 66 | /** |
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| 67 | * The capabilities of this DB implementation |
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| 68 | * |
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| 69 | * The 'new_link' element contains the PHP version that first provided |
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| 70 | * new_link support for this DBMS. Contains false if it's unsupported. |
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| 71 | * |
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| 72 | * Meaning of the 'limit' element: |
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| 73 | * + 'emulate' = emulate with fetch row by number |
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| 74 | * + 'alter' = alter the query |
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| 75 | * + false = skip rows |
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| 76 | * |
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| 77 | * NOTE: The feature set of the following drivers are different than |
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| 78 | * the default: |
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| 79 | * + solid: 'transactions' = true |
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| 80 | * + navision: 'limit' = false |
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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' => false, |
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| 92 | ); |
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| 93 | |
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| 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 | var $errorcode_map = array( |
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| 99 | '01004' => DB_ERROR_TRUNCATED, |
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| 100 | '07001' => DB_ERROR_MISMATCH, |
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| 101 | '21S01' => DB_ERROR_VALUE_COUNT_ON_ROW, |
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| 102 | '21S02' => DB_ERROR_MISMATCH, |
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| 103 | '22001' => DB_ERROR_INVALID, |
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| 104 | '22003' => DB_ERROR_INVALID_NUMBER, |
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| 105 | '22005' => DB_ERROR_INVALID_NUMBER, |
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| 106 | '22008' => DB_ERROR_INVALID_DATE, |
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| 107 | '22012' => DB_ERROR_DIVZERO, |
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| 108 | '23000' => DB_ERROR_CONSTRAINT, |
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| 109 | '23502' => DB_ERROR_CONSTRAINT_NOT_NULL, |
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| 110 | '23503' => DB_ERROR_CONSTRAINT, |
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| 111 | '23504' => DB_ERROR_CONSTRAINT, |
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| 112 | '23505' => DB_ERROR_CONSTRAINT, |
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| 113 | '24000' => DB_ERROR_INVALID, |
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| 114 | '34000' => DB_ERROR_INVALID, |
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| 115 | '37000' => DB_ERROR_SYNTAX, |
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| 116 | '42000' => DB_ERROR_SYNTAX, |
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| 117 | '42601' => DB_ERROR_SYNTAX, |
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| 118 | 'IM001' => DB_ERROR_UNSUPPORTED, |
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| 119 | 'S0000' => DB_ERROR_NOSUCHTABLE, |
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| 120 | 'S0001' => DB_ERROR_ALREADY_EXISTS, |
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| 121 | 'S0002' => DB_ERROR_NOSUCHTABLE, |
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| 122 | 'S0011' => DB_ERROR_ALREADY_EXISTS, |
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| 123 | 'S0012' => DB_ERROR_NOT_FOUND, |
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| 124 | 'S0021' => DB_ERROR_ALREADY_EXISTS, |
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| 125 | 'S0022' => DB_ERROR_NOSUCHFIELD, |
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| 126 | 'S1009' => DB_ERROR_INVALID, |
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| 127 | 'S1090' => DB_ERROR_INVALID, |
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| 128 | 'S1C00' => DB_ERROR_NOT_CAPABLE, |
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| 129 | ); |
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| 130 | |
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| 131 | /** |
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| 132 | * The raw database connection created by PHP |
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| 133 | * @var resource |
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| 134 | */ |
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| 135 | var $connection; |
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| 136 | |
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| 137 | /** |
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| 138 | * The DSN information for connecting to a database |
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| 139 | * @var array |
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| 140 | */ |
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| 141 | var $dsn = array(); |
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| 142 | |
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| 143 | |
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| 144 | /** |
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| 145 | * The number of rows affected by a data manipulation query |
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| 146 | * @var integer |
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| 147 | * @access private |
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| 148 | */ |
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| 149 | var $affected = 0; |
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| 150 | |
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| 151 | |
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| 152 | // }}} |
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| 153 | // {{{ constructor |
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| 154 | |
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| 155 | /** |
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| 156 | * This constructor calls <kbd>$this->DB_common()</kbd> |
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| 157 | * |
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| 158 | * @return void |
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| 159 | */ |
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| 160 | function DB_odbc() |
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| 161 | { |
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| 162 | $this->DB_common(); |
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| 163 | } |
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| 164 | |
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| 165 | // }}} |
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| 166 | // {{{ connect() |
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| 167 | |
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| 168 | /** |
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| 169 | * Connect to the database server, log in and open the database |
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| 170 | * |
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| 171 | * Don't call this method directly. Use DB::connect() instead. |
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| 172 | * |
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| 173 | * PEAR DB's odbc driver supports the following extra DSN options: |
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| 174 | * + cursor The type of cursor to be used for this connection. |
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| 175 | * |
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| 176 | * @param array $dsn the data source name |
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| 177 | * @param bool $persistent should the connection be persistent? |
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| 178 | * |
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| 179 | * @return int DB_OK on success. A DB_Error object on failure. |
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| 180 | */ |
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| 181 | function connect($dsn, $persistent = false) |
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| 182 | { |
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| 183 | if (!PEAR::loadExtension('odbc')) { |
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| 184 | return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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| 185 | } |
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| 186 | |
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| 187 | $this->dsn = $dsn; |
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| 188 | if ($dsn['dbsyntax']) { |
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| 189 | $this->dbsyntax = $dsn['dbsyntax']; |
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| 190 | } |
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| 191 | switch ($this->dbsyntax) { |
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| 192 | case 'access': |
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| 193 | case 'db2': |
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| 194 | case 'solid': |
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| 195 | $this->features['transactions'] = true; |
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| 196 | break; |
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| 197 | case 'navision': |
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| 198 | $this->features['limit'] = false; |
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| 199 | } |
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| 200 | |
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| 201 | /* |
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| 202 | * This is hear for backwards compatibility. Should have been using |
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| 203 | * 'database' all along, but prior to 1.6.0RC3 'hostspec' was used. |
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| 204 | */ |
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| 205 | if ($dsn['database']) { |
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| 206 | $odbcdsn = $dsn['database']; |
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| 207 | } elseif ($dsn['hostspec']) { |
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| 208 | $odbcdsn = $dsn['hostspec']; |
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| 209 | } else { |
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| 210 | $odbcdsn = 'localhost'; |
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| 211 | } |
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| 212 | |
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| 213 | $connect_function = $persistent ? 'odbc_pconnect' : 'odbc_connect'; |
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| 214 | |
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| 215 | if (empty($dsn['cursor'])) { |
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| 216 | $this->connection = @$connect_function($odbcdsn, $dsn['username'], |
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| 217 | $dsn['password']); |
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| 218 | } else { |
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| 219 | $this->connection = @$connect_function($odbcdsn, $dsn['username'], |
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| 220 | $dsn['password'], |
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| 221 | $dsn['cursor']); |
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| 222 | } |
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| 223 | |
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| 224 | if (!is_resource($this->connection)) { |
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| 225 | return $this->raiseError(DB_ERROR_CONNECT_FAILED, |
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| 226 | null, null, null, |
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| 227 | $this->errorNative()); |
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| 228 | } |
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| 229 | return DB_OK; |
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| 230 | } |
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| 231 | |
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| 232 | // }}} |
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| 233 | // {{{ disconnect() |
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| 234 | |
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| 235 | /** |
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| 236 | * Disconnects from the database server |
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| 237 | * |
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| 238 | * @return bool TRUE on success, FALSE on failure |
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| 239 | */ |
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| 240 | function disconnect() |
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| 241 | { |
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| 242 | $err = @odbc_close($this->connection); |
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| 243 | $this->connection = null; |
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| 244 | return $err; |
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| 245 | } |
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| 246 | |
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| 247 | // }}} |
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| 248 | // {{{ simpleQuery() |
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| 249 | |
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| 250 | /** |
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| 251 | * Sends a query to the database server |
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| 252 | * |
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| 253 | * @param string the SQL query string |
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| 254 | * |
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| 255 | * @return mixed + a PHP result resrouce for successful SELECT queries |
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| 256 | * + the DB_OK constant for other successful queries |
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| 257 | * + a DB_Error object on failure |
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| 258 | */ |
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| 259 | function simpleQuery($query) |
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| 260 | { |
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| 261 | $this->last_query = $query; |
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| 262 | $query = $this->modifyQuery($query); |
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| 263 | $result = @odbc_exec($this->connection, $query); |
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| 264 | if (!$result) { |
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| 265 | return $this->odbcRaiseError(); // XXX ERRORMSG |
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| 266 | } |
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| 267 | // Determine which queries that should return data, and which |
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| 268 | // should return an error code only. |
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| 269 | if (DB::isManip($query)) { |
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| 270 | $this->affected = $result; // For affectedRows() |
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| 271 | return DB_OK; |
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| 272 | } |
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| 273 | $this->affected = 0; |
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| 274 | return $result; |
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| 275 | } |
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| 276 | |
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| 277 | // }}} |
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| 278 | // {{{ nextResult() |
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| 279 | |
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| 280 | /** |
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| 281 | * Move the internal odbc result pointer to the next available result |
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| 282 | * |
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| 283 | * @param a valid fbsql result resource |
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| 284 | * |
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| 285 | * @access public |
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| 286 | * |
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| 287 | * @return true if a result is available otherwise return false |
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| 288 | */ |
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| 289 | function nextResult($result) |
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| 290 | { |
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| 291 | return @odbc_next_result($result); |
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| 292 | } |
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| 293 | |
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| 294 | // }}} |
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| 295 | // {{{ fetchInto() |
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| 296 | |
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| 297 | /** |
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| 298 | * Places a row from the result set into the given array |
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| 299 | * |
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| 300 | * Formating of the array and the data therein are configurable. |
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| 301 | * See DB_result::fetchInto() for more information. |
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| 302 | * |
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| 303 | * This method is not meant to be called directly. Use |
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| 304 | * DB_result::fetchInto() instead. It can't be declared "protected" |
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| 305 | * because DB_result is a separate object. |
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| 306 | * |
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| 307 | * @param resource $result the query result resource |
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| 308 | * @param array $arr the referenced array to put the data in |
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| 309 | * @param int $fetchmode how the resulting array should be indexed |
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| 310 | * @param int $rownum the row number to fetch (0 = first row) |
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| 311 | * |
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| 312 | * @return mixed DB_OK on success, NULL when the end of a result set is |
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| 313 | * reached or on failure |
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| 314 | * |
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| 315 | * @see DB_result::fetchInto() |
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| 316 | */ |
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| 317 | function fetchInto($result, &$arr, $fetchmode, $rownum = null) |
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| 318 | { |
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| 319 | $arr = array(); |
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| 320 | if ($rownum !== null) { |
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| 321 | $rownum++; // ODBC first row is 1 |
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| 322 | if (version_compare(phpversion(), '4.2.0', 'ge')) { |
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| 323 | $cols = @odbc_fetch_into($result, $arr, $rownum); |
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| 324 | } else { |
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| 325 | $cols = @odbc_fetch_into($result, $rownum, $arr); |
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| 326 | } |
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| 327 | } else { |
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| 328 | $cols = @odbc_fetch_into($result, $arr); |
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| 329 | } |
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| 330 | if (!$cols) { |
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| 331 | return null; |
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| 332 | } |
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| 333 | if ($fetchmode !== DB_FETCHMODE_ORDERED) { |
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| 334 | for ($i = 0; $i < count($arr); $i++) { |
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| 335 | $colName = @odbc_field_name($result, $i+1); |
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| 336 | $a[$colName] = $arr[$i]; |
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| 337 | } |
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| 338 | if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { |
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| 339 | $a = array_change_key_case($a, CASE_LOWER); |
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| 340 | } |
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| 341 | $arr = $a; |
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| 342 | } |
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| 343 | if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { |
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| 344 | $this->_rtrimArrayValues($arr); |
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| 345 | } |
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| 346 | if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { |
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| 347 | $this->_convertNullArrayValuesToEmpty($arr); |
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| 348 | } |
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| 349 | return DB_OK; |
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| 350 | } |
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| 351 | |
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| 352 | // }}} |
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| 353 | // {{{ freeResult() |
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| 354 | |
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| 355 | /** |
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| 356 | * Deletes the result set and frees the memory occupied by the result set |
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| 357 | * |
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| 358 | * This method is not meant to be called directly. Use |
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| 359 | * DB_result::free() instead. It can't be declared "protected" |
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| 360 | * because DB_result is a separate object. |
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| 361 | * |
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| 362 | * @param resource $result PHP's query result resource |
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| 363 | * |
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| 364 | * @return bool TRUE on success, FALSE if $result is invalid |
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| 365 | * |
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| 366 | * @see DB_result::free() |
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| 367 | */ |
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| 368 | function freeResult($result) |
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| 369 | { |
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| 370 | return @odbc_free_result($result); |
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| 371 | } |
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| 372 | |
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| 373 | // }}} |
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| 374 | // {{{ numCols() |
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| 375 | |
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| 376 | /** |
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| 377 | * Gets the number of columns in a result set |
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| 378 | * |
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| 379 | * This method is not meant to be called directly. Use |
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| 380 | * DB_result::numCols() instead. It can't be declared "protected" |
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| 381 | * because DB_result is a separate object. |
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| 382 | * |
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| 383 | * @param resource $result PHP's query result resource |
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| 384 | * |
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| 385 | * @return int the number of columns. A DB_Error object on failure. |
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| 386 | * |
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| 387 | * @see DB_result::numCols() |
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| 388 | */ |
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| 389 | function numCols($result) |
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| 390 | { |
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| 391 | $cols = @odbc_num_fields($result); |
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| 392 | if (!$cols) { |
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| 393 | return $this->odbcRaiseError(); |
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| 394 | } |
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| 395 | return $cols; |
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| 396 | } |
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| 397 | |
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| 398 | // }}} |
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| 399 | // {{{ affectedRows() |
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| 400 | |
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| 401 | /** |
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| 402 | * Determines the number of rows affected by a data maniuplation query |
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| 403 | * |
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| 404 | * 0 is returned for queries that don't manipulate data. |
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| 405 | * |
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| 406 | * @return int the number of rows. A DB_Error object on failure. |
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| 407 | */ |
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| 408 | function affectedRows() |
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| 409 | { |
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| 410 | if (empty($this->affected)) { // In case of SELECT stms |
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| 411 | return 0; |
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| 412 | } |
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| 413 | $nrows = @odbc_num_rows($this->affected); |
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| 414 | if ($nrows == -1) { |
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| 415 | return $this->odbcRaiseError(); |
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| 416 | } |
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| 417 | return $nrows; |
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| 418 | } |
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| 419 | |
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| 420 | // }}} |
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| 421 | // {{{ numRows() |
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| 422 | |
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| 423 | /** |
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| 424 | * Gets the number of rows in a result set |
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| 425 | * |
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| 426 | * Not all ODBC drivers support this functionality. If they don't |
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| 427 | * a DB_Error object for DB_ERROR_UNSUPPORTED is returned. |
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| 428 | * |
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| 429 | * This method is not meant to be called directly. Use |
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| 430 | * DB_result::numRows() instead. It can't be declared "protected" |
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| 431 | * because DB_result is a separate object. |
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| 432 | * |
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| 433 | * @param resource $result PHP's query result resource |
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| 434 | * |
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| 435 | * @return int the number of rows. A DB_Error object on failure. |
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| 436 | * |
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| 437 | * @see DB_result::numRows() |
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| 438 | */ |
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| 439 | function numRows($result) |
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| 440 | { |
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| 441 | $nrows = @odbc_num_rows($result); |
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| 442 | if ($nrows == -1) { |
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| 443 | return $this->odbcRaiseError(DB_ERROR_UNSUPPORTED); |
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| 444 | } |
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| 445 | if ($nrows === false) { |
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| 446 | return $this->odbcRaiseError(); |
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| 447 | } |
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| 448 | return $nrows; |
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| 449 | } |
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| 450 | |
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| 451 | // }}} |
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| 452 | // {{{ quoteIdentifier() |
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| 453 | |
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| 454 | /** |
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| 455 | * Quotes a string so it can be safely used as a table or column name |
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| 456 | * |
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| 457 | * Use 'mssql' as the dbsyntax in the DB DSN only if you've unchecked |
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| 458 | * "Use ANSI quoted identifiers" when setting up the ODBC data source. |
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| 459 | * |
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| 460 | * @param string $str identifier name to be quoted |
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| 461 | * |
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| 462 | * @return string quoted identifier string |
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| 463 | * |
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| 464 | * @see DB_common::quoteIdentifier() |
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| 465 | * @since Method available since Release 1.6.0 |
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| 466 | */ |
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| 467 | function quoteIdentifier($str) |
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| 468 | { |
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| 469 | switch ($this->dsn['dbsyntax']) { |
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| 470 | case 'access': |
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| 471 | return '[' . $str . ']'; |
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| 472 | case 'mssql': |
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| 473 | case 'sybase': |
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| 474 | return '[' . str_replace(']', ']]', $str) . ']'; |
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| 475 | case 'mysql': |
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| 476 | case 'mysqli': |
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| 477 | return '`' . $str . '`'; |
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| 478 | default: |
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| 479 | return '"' . str_replace('"', '""', $str) . '"'; |
|---|
| 480 | } |
|---|
| 481 | } |
|---|
| 482 | |
|---|
| 483 | // }}} |
|---|
| 484 | // {{{ quote() |
|---|
| 485 | |
|---|
| 486 | /** |
|---|
| 487 | * @deprecated Deprecated in release 1.6.0 |
|---|
| 488 | * @internal |
|---|
| 489 | */ |
|---|
| 490 | function quote($str) |
|---|
| 491 | { |
|---|
| 492 | return $this->quoteSmart($str); |
|---|
| 493 | } |
|---|
| 494 | |
|---|
| 495 | // }}} |
|---|
| 496 | // {{{ nextId() |
|---|
| 497 | |
|---|
| 498 | /** |
|---|
| 499 | * Returns the next free id in a sequence |
|---|
| 500 | * |
|---|
| 501 | * @param string $seq_name name of the sequence |
|---|
| 502 | * @param boolean $ondemand when true, the seqence is automatically |
|---|
| 503 | * created if it does not exist |
|---|
| 504 | * |
|---|
| 505 | * @return int the next id number in the sequence. |
|---|
| 506 | * A DB_Error object on failure. |
|---|
| 507 | * |
|---|
| 508 | * @see DB_common::nextID(), DB_common::getSequenceName(), |
|---|
| 509 | * DB_odbc::createSequence(), DB_odbc::dropSequence() |
|---|
| 510 | */ |
|---|
| 511 | function nextId($seq_name, $ondemand = true) |
|---|
| 512 | { |
|---|
| 513 | $seqname = $this->getSequenceName($seq_name); |
|---|
| 514 | $repeat = 0; |
|---|
| 515 | do { |
|---|
| 516 | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
|---|
| 517 | $result = $this->query("update ${seqname} set id = id + 1"); |
|---|
| 518 | $this->popErrorHandling(); |
|---|
| 519 | if ($ondemand && DB::isError($result) && |
|---|
| 520 | $result->getCode() == DB_ERROR_NOSUCHTABLE) { |
|---|
| 521 | $repeat = 1; |
|---|
| 522 | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
|---|
| 523 | $result = $this->createSequence($seq_name); |
|---|
| 524 | $this->popErrorHandling(); |
|---|
| 525 | if (DB::isError($result)) { |
|---|
| 526 | return $this->raiseError($result); |
|---|
| 527 | } |
|---|
| 528 | $result = $this->query("insert into ${seqname} (id) values(0)"); |
|---|
| 529 | } else { |
|---|
| 530 | $repeat = 0; |
|---|
| 531 | } |
|---|
| 532 | } while ($repeat); |
|---|
| 533 | |
|---|
| 534 | if (DB::isError($result)) { |
|---|
| 535 | return $this->raiseError($result); |
|---|
| 536 | } |
|---|
| 537 | |
|---|
| 538 | $result = $this->query("select id from ${seqname}"); |
|---|
| 539 | if (DB::isError($result)) { |
|---|
| 540 | return $result; |
|---|
| 541 | } |
|---|
| 542 | |
|---|
| 543 | $row = $result->fetchRow(DB_FETCHMODE_ORDERED); |
|---|
| 544 | if (DB::isError($row || !$row)) { |
|---|
| 545 | return $row; |
|---|
| 546 | } |
|---|
| 547 | |
|---|
| 548 | return $row[0]; |
|---|
| 549 | } |
|---|
| 550 | |
|---|
| 551 | /** |
|---|
| 552 | * Creates a new sequence |
|---|
| 553 | * |
|---|
| 554 | * @param string $seq_name name of the new sequence |
|---|
| 555 | * |
|---|
| 556 | * @return int DB_OK on success. A DB_Error object on failure. |
|---|
| 557 | * |
|---|
| 558 | * @see DB_common::createSequence(), DB_common::getSequenceName(), |
|---|
| 559 | * DB_odbc::nextID(), DB_odbc::dropSequence() |
|---|
| 560 | */ |
|---|
| 561 | function createSequence($seq_name) |
|---|
| 562 | { |
|---|
| 563 | return $this->query('CREATE TABLE ' |
|---|
| 564 | . $this->getSequenceName($seq_name) |
|---|
| 565 | . ' (id integer NOT NULL,' |
|---|
| 566 | . ' PRIMARY KEY(id))'); |
|---|
| 567 | } |
|---|
| 568 | |
|---|
| 569 | // }}} |
|---|
| 570 | // {{{ dropSequence() |
|---|
| 571 | |
|---|
| 572 | /** |
|---|
| 573 | * Deletes a sequence |
|---|
| 574 | * |
|---|
| 575 | * @param string $seq_name name of the sequence to be deleted |
|---|
| 576 | * |
|---|
| 577 | * @return int DB_OK on success. A DB_Error object on failure. |
|---|
| 578 | * |
|---|
| 579 | * @see DB_common::dropSequence(), DB_common::getSequenceName(), |
|---|
| 580 | * DB_odbc::nextID(), DB_odbc::createSequence() |
|---|
| 581 | */ |
|---|
| 582 | function dropSequence($seq_name) |
|---|
| 583 | { |
|---|
| 584 | return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name)); |
|---|
| 585 | } |
|---|
| 586 | |
|---|
| 587 | // }}} |
|---|
| 588 | // {{{ autoCommit() |
|---|
| 589 | |
|---|
| 590 | /** |
|---|
| 591 | * Enables or disables automatic commits |
|---|
| 592 | * |
|---|
| 593 | * @param bool $onoff true turns it on, false turns it off |
|---|
| 594 | * |
|---|
| 595 | * @return int DB_OK on success. A DB_Error object if the driver |
|---|
| 596 | * doesn't support auto-committing transactions. |
|---|
| 597 | */ |
|---|
| 598 | function autoCommit($onoff = false) |
|---|
| 599 | { |
|---|
| 600 | if (!@odbc_autocommit($this->connection, $onoff)) { |
|---|
| 601 | return $this->odbcRaiseError(); |
|---|
| 602 | } |
|---|
| 603 | return DB_OK; |
|---|
| 604 | } |
|---|
| 605 | |
|---|
| 606 | // }}} |
|---|
| 607 | // {{{ commit() |
|---|
| 608 | |
|---|
| 609 | /** |
|---|
| 610 | * Commits the current transaction |
|---|
| 611 | * |
|---|
| 612 | * @return int DB_OK on success. A DB_Error object on failure. |
|---|
| 613 | */ |
|---|
| 614 | function commit() |
|---|
| 615 | { |
|---|
| 616 | if (!@odbc_commit($this->connection)) { |
|---|
| 617 | return $this->odbcRaiseError(); |
|---|
| 618 | } |
|---|
| 619 | return DB_OK; |
|---|
| 620 | } |
|---|
| 621 | |
|---|
| 622 | // }}} |
|---|
| 623 | // {{{ rollback() |
|---|
| 624 | |
|---|
| 625 | /** |
|---|
| 626 | * Reverts the current transaction |
|---|
| 627 | * |
|---|
| 628 | * @return int DB_OK on success. A DB_Error object on failure. |
|---|
| 629 | */ |
|---|
| 630 | function rollback() |
|---|
| 631 | { |
|---|
| 632 | if (!@odbc_rollback($this->connection)) { |
|---|
| 633 | return $this->odbcRaiseError(); |
|---|
| 634 | } |
|---|
| 635 | return DB_OK; |
|---|
| 636 | } |
|---|
| 637 | |
|---|
| 638 | // }}} |
|---|
| 639 | // {{{ odbcRaiseError() |
|---|
| 640 | |
|---|
| 641 | /** |
|---|
| 642 | * Produces a DB_Error object regarding the current problem |
|---|
| 643 | * |
|---|
| 644 | * @param int $errno if the error is being manually raised pass a |
|---|
| 645 | * DB_ERROR* constant here. If this isn't passed |
|---|
| 646 | * the error information gathered from the DBMS. |
|---|
| 647 | * |
|---|
| 648 | * @return object the DB_Error object |
|---|
| 649 | * |
|---|
| 650 | * @see DB_common::raiseError(), |
|---|
| 651 | * DB_odbc::errorNative(), DB_common::errorCode() |
|---|
| 652 | */ |
|---|
| 653 | function odbcRaiseError($errno = null) |
|---|
| 654 | { |
|---|
| 655 | if ($errno === null) { |
|---|
| 656 | switch ($this->dbsyntax) { |
|---|
| 657 | case 'access': |
|---|
| 658 | if ($this->options['portability'] & DB_PORTABILITY_ERRORS) { |
|---|
| 659 | $this->errorcode_map['07001'] = DB_ERROR_NOSUCHFIELD; |
|---|
| 660 | } else { |
|---|
| 661 | // Doing this in case mode changes during runtime. |
|---|
| 662 | $this->errorcode_map['07001'] = DB_ERROR_MISMATCH; |
|---|
| 663 | } |
|---|
| 664 | |
|---|
| 665 | $native_code = odbc_error($this->connection); |
|---|
| 666 | |
|---|
| 667 | // S1000 is for "General Error." Let's be more specific. |
|---|
| 668 | if ($native_code == 'S1000') { |
|---|
| 669 | $errormsg = odbc_errormsg($this->connection); |
|---|
| 670 | static $error_regexps; |
|---|
| 671 | if (!isset($error_regexps)) { |
|---|
| 672 | $error_regexps = array( |
|---|
| 673 | '/includes related records.$/i' => DB_ERROR_CONSTRAINT, |
|---|
| 674 | '/cannot contain a Null value/i' => DB_ERROR_CONSTRAINT_NOT_NULL, |
|---|
| 675 | ); |
|---|
| 676 | } |
|---|
| 677 | foreach ($error_regexps as $regexp => $code) { |
|---|
| 678 | if (preg_match($regexp, $errormsg)) { |
|---|
| 679 | return $this->raiseError($code, |
|---|
| 680 | null, null, null, |
|---|
| 681 | $native_code . ' ' . $errormsg); |
|---|
| 682 | } |
|---|
| 683 | } |
|---|
| 684 | $errno = DB_ERROR; |
|---|
| 685 | } else { |
|---|
| 686 | $errno = $this->errorCode($native_code); |
|---|
| 687 | } |
|---|
| 688 | break; |
|---|
| 689 | default: |
|---|
| 690 | $errno = $this->errorCode(odbc_error($this->connection)); |
|---|
| 691 | } |
|---|
| 692 | } |
|---|
| 693 | return $this->raiseError($errno, null, null, null, |
|---|
| 694 | $this->errorNative()); |
|---|
| 695 | } |
|---|
| 696 | |
|---|
| 697 | // }}} |
|---|
| 698 | // {{{ errorNative() |
|---|
| 699 | |
|---|
| 700 | /** |
|---|
| 701 | * Gets the DBMS' native error code and message produced by the last query |
|---|
| 702 | * |
|---|
| 703 | * @return string the DBMS' error code and message |
|---|
| 704 | */ |
|---|
| 705 | function errorNative() |
|---|
| 706 | { |
|---|
| 707 | if (!is_resource($this->connection)) { |
|---|
| 708 | return @odbc_error() . ' ' . @odbc_errormsg(); |
|---|
| 709 | } |
|---|
| 710 | return @odbc_error($this->connection) . ' ' . @odbc_errormsg($this->connection); |
|---|
| 711 | } |
|---|
| 712 | |
|---|
| 713 | // }}} |
|---|
| 714 | // {{{ tableInfo() |
|---|
| 715 | |
|---|
| 716 | /** |
|---|
| 717 | * Returns information about a table or a result set |
|---|
| 718 | * |
|---|
| 719 | * @param object|string $result DB_result object from a query or a |
|---|
| 720 | * string containing the name of a table. |
|---|
| 721 | * While this also accepts a query result |
|---|
| 722 | * resource identifier, this behavior is |
|---|
| 723 | * deprecated. |
|---|
| 724 | * @param int $mode a valid tableInfo mode |
|---|
| 725 | * |
|---|
| 726 | * @return array an associative array with the information requested. |
|---|
| 727 | * A DB_Error object on failure. |
|---|
| 728 | * |
|---|
| 729 | * @see DB_common::tableInfo() |
|---|
| 730 | * @since Method available since Release 1.7.0 |
|---|
| 731 | */ |
|---|
| 732 | function tableInfo($result, $mode = null) |
|---|
| 733 | { |
|---|
| 734 | if (is_string($result)) { |
|---|
| 735 | /* |
|---|
| 736 | * Probably received a table name. |
|---|
| 737 | * Create a result resource identifier. |
|---|
| 738 | */ |
|---|
| 739 | $id = @odbc_exec($this->connection, "SELECT * FROM $result"); |
|---|
| 740 | if (!$id) { |
|---|
| 741 | return $this->odbcRaiseError(); |
|---|
| 742 | } |
|---|
| 743 | $got_string = true; |
|---|
| 744 | } elseif (isset($result->result)) { |
|---|
| 745 | /* |
|---|
| 746 | * Probably received a result object. |
|---|
| 747 | * Extract the result resource identifier. |
|---|
| 748 | */ |
|---|
| 749 | $id = $result->result; |
|---|
| 750 | $got_string = false; |
|---|
| 751 | } else { |
|---|
| 752 | /* |
|---|
| 753 | * Probably received a result resource identifier. |
|---|
| 754 | * Copy it. |
|---|
| 755 | * Deprecated. Here for compatibility only. |
|---|
| 756 | */ |
|---|
| 757 | $id = $result; |
|---|
| 758 | $got_string = false; |
|---|
| 759 | } |
|---|
| 760 | |
|---|
| 761 | if (!is_resource($id)) { |
|---|
| 762 | return $this->odbcRaiseError(DB_ERROR_NEED_MORE_DATA); |
|---|
| 763 | } |
|---|
| 764 | |
|---|
| 765 | if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { |
|---|
| 766 | $case_func = 'strtolower'; |
|---|
| 767 | } else { |
|---|
| 768 | $case_func = 'strval'; |
|---|
| 769 | } |
|---|
| 770 | |
|---|
| 771 | $count = @odbc_num_fields($id); |
|---|
| 772 | $res = array(); |
|---|
| 773 | |
|---|
| 774 | if ($mode) { |
|---|
| 775 | $res['num_fields'] = $count; |
|---|
| 776 | } |
|---|
| 777 | |
|---|
| 778 | for ($i = 0; $i < $count; $i++) { |
|---|
| 779 | $col = $i + 1; |
|---|
| 780 | $res[$i] = array( |
|---|
| 781 | 'table' => $got_string ? $case_func($result) : '', |
|---|
| 782 | 'name' => $case_func(@odbc_field_name($id, $col)), |
|---|
| 783 | 'type' => @odbc_field_type($id, $col), |
|---|
| 784 | 'len' => @odbc_field_len($id, $col), |
|---|
| 785 | 'flags' => '', |
|---|
| 786 | ); |
|---|
| 787 | if ($mode & DB_TABLEINFO_ORDER) { |
|---|
| 788 | $res['order'][$res[$i]['name']] = $i; |
|---|
| 789 | } |
|---|
| 790 | if ($mode & DB_TABLEINFO_ORDERTABLE) { |
|---|
| 791 | $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
|---|
| 792 | } |
|---|
| 793 | } |
|---|
| 794 | |
|---|
| 795 | // free the result only if we were called on a table |
|---|
| 796 | if ($got_string) { |
|---|
| 797 | @odbc_free_result($id); |
|---|
| 798 | } |
|---|
| 799 | return $res; |
|---|
| 800 | } |
|---|
| 801 | |
|---|
| 802 | // }}} |
|---|
| 803 | // {{{ getSpecialQuery() |
|---|
| 804 | |
|---|
| 805 | /** |
|---|
| 806 | * Obtains the query string needed for listing a given type of objects |
|---|
| 807 | * |
|---|
| 808 | * Thanks to [email protected] and [email protected]. |
|---|
| 809 | * |
|---|
| 810 | * @param string $type the kind of objects you want to retrieve |
|---|
| 811 | * |
|---|
| 812 | * @return string the list of objects requested |
|---|
| 813 | * |
|---|
| 814 | * @access protected |
|---|
| 815 | * @see DB_common::getListOf() |
|---|
| 816 | * @since Method available since Release 1.7.0 |
|---|
| 817 | */ |
|---|
| 818 | function getSpecialQuery($type) |
|---|
| 819 | { |
|---|
| 820 | switch ($type) { |
|---|
| 821 | case 'databases': |
|---|
| 822 | if (!function_exists('odbc_data_source')) { |
|---|
| 823 | return null; |
|---|
| 824 | } |
|---|
| 825 | $res = @odbc_data_source($this->connection, SQL_FETCH_FIRST); |
|---|
| 826 | if (is_array($res)) { |
|---|
| 827 | $out = array($res['server']); |
|---|
| 828 | while($res = @odbc_data_source($this->connection, |
|---|
| 829 | SQL_FETCH_NEXT)) |
|---|
| 830 | { |
|---|
| 831 | $out[] = $res['server']; |
|---|
| 832 | } |
|---|
| 833 | return $out; |
|---|
| 834 | } else { |
|---|
| 835 | return $this->odbcRaiseError(); |
|---|
| 836 | } |
|---|
| 837 | break; |
|---|
| 838 | case 'tables': |
|---|
| 839 | case 'schema.tables': |
|---|
| 840 | $keep = 'TABLE'; |
|---|
| 841 | break; |
|---|
| 842 | case 'views': |
|---|
| 843 | $keep = 'VIEW'; |
|---|
| 844 | break; |
|---|
| 845 | default: |
|---|
| 846 | return null; |
|---|
| 847 | } |
|---|
| 848 | |
|---|
| 849 | /* |
|---|
| 850 | * Removing non-conforming items in the while loop rather than |
|---|
| 851 | * in the odbc_tables() call because some backends choke on this: |
|---|
| 852 | * odbc_tables($this->connection, '', '', '', 'TABLE') |
|---|
| 853 | */ |
|---|
| 854 | $res = @odbc_tables($this->connection); |
|---|
| 855 | if (!$res) { |
|---|
| 856 | return $this->odbcRaiseError(); |
|---|
| 857 | } |
|---|
| 858 | $out = array(); |
|---|
| 859 | while ($row = odbc_fetch_array($res)) { |
|---|
| 860 | if ($row['TABLE_TYPE'] != $keep) { |
|---|
| 861 | continue; |
|---|
| 862 | } |
|---|
| 863 | if ($type == 'schema.tables') { |
|---|
| 864 | $out[] = $row['TABLE_SCHEM'] . '.' . $row['TABLE_NAME']; |
|---|
| 865 | } else { |
|---|
| 866 | $out[] = $row['TABLE_NAME']; |
|---|
| 867 | } |
|---|
| 868 | } |
|---|
| 869 | return $out; |
|---|
| 870 | } |
|---|
| 871 | |
|---|
| 872 | // }}} |
|---|
| 873 | |
|---|
| 874 | } |
|---|
| 875 | |
|---|
| 876 | /* |
|---|
| 877 | * Local variables: |
|---|
| 878 | * tab-width: 4 |
|---|
| 879 | * c-basic-offset: 4 |
|---|
| 880 | * End: |
|---|
| 881 | */ |
|---|
| 882 | |
|---|
| 883 | ?> |
|---|