| commit | author | age | ||
| c9462d | 1 | <?php |
| S | 2 | // vim: set et ts=4 sw=4 fdm=marker: |
| 3 | // +----------------------------------------------------------------------+ | |
| 4 | // | PHP versions 4 and 5 | | |
| 5 | // +----------------------------------------------------------------------+ | |
| 6 | // | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, | | |
| 7 | // | Stig. S. Bakken, Lukas Smith | | |
| 8 | // | All rights reserved. | | |
| 9 | // +----------------------------------------------------------------------+ | |
| 10 | // | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB | | |
| 11 | // | API as well as database abstraction for PHP applications. | | |
| 12 | // | This LICENSE is in the BSD license style. | | |
| 13 | // | | | |
| 14 | // | Redistribution and use in source and binary forms, with or without | | |
| 15 | // | modification, are permitted provided that the following conditions | | |
| 16 | // | are met: | | |
| 17 | // | | | |
| 18 | // | Redistributions of source code must retain the above copyright | | |
| 19 | // | notice, this list of conditions and the following disclaimer. | | |
| 20 | // | | | |
| 21 | // | Redistributions in binary form must reproduce the above copyright | | |
| 22 | // | notice, this list of conditions and the following disclaimer in the | | |
| 23 | // | documentation and/or other materials provided with the distribution. | | |
| 24 | // | | | |
| 25 | // | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, | | |
| 26 | // | Lukas Smith nor the names of his contributors may be used to endorse | | |
| 27 | // | or promote products derived from this software without specific prior| | |
| 28 | // | written permission. | | |
| 29 | // | | | |
| 30 | // | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | | |
| 31 | // | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | | |
| 32 | // | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | | |
| 33 | // | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | | |
| 34 | // | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | | |
| 35 | // | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | | |
| 36 | // | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS| | |
| 37 | // | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED | | |
| 38 | // | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | | |
| 39 | // | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY| | |
| 40 | // | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | | |
| 41 | // | POSSIBILITY OF SUCH DAMAGE. | | |
| 42 | // +----------------------------------------------------------------------+ | |
| 43 | // | Author: Lukas Smith <smith@pooteeweet.org> | | |
| 44 | // | Lorenzo Alberton <l.alberton@quipo.it> | | |
| 45 | // +----------------------------------------------------------------------+ | |
| 46 | // | |
| 47 | // $Id$ | |
| 48 | ||
| 49 | require_once 'MDB2/Driver/Datatype/Common.php'; | |
| 50 | ||
| 51 | /** | |
| 52 | * MDB2 Firebird/Interbase driver | |
| 53 | * | |
| 54 | * @package MDB2 | |
| 55 | * @category Database | |
| 56 | * @author Lukas Smith <smith@pooteeweet.org> | |
| 57 | * @author Lorenzo Alberton <l.alberton@quipo.it> | |
| 58 | */ | |
| 59 | class MDB2_Driver_Datatype_ibase extends MDB2_Driver_Datatype_Common | |
| 60 | { | |
| 61 | // {{{ convertResult() | |
| 62 | ||
| 63 | /** | |
| 64 | * convert a value to a RDBMS independent MDB2 type | |
| 65 | * | |
| 66 | * @param mixed $value value to be converted | |
| 67 | * @param int $type constant that specifies which type to convert to | |
| 68 | * @return mixed converted value or a MDB2 error on failure | |
| 69 | * @access public | |
| 70 | */ | |
| 71 | function convertResult($value, $type) | |
| 72 | { | |
| 73 | if (is_null($value)) { | |
| 74 | return null; | |
| 75 | } | |
| 76 | $db =& $this->getDBInstance(); | |
| 77 | if (PEAR::isError($db)) { | |
| 78 | return $db; | |
| 79 | } | |
| 80 | ||
| 81 | switch ($type) { | |
| 82 | case 'decimal': | |
| 83 | return sprintf('%.'.$db->options['decimal_places'].'f', doubleval($value)/pow(10.0, $db->options['decimal_places'])); | |
| 84 | case 'timestamp': | |
| 85 | return substr($value, 0, strlen('YYYY-MM-DD HH:MM:SS')); | |
| 86 | default: | |
| 87 | return $this->_baseConvertResult($value, $type); | |
| 88 | } | |
| 89 | } | |
| 90 | ||
| 91 | // }}} | |
| 92 | // {{{ getTypeDeclaration() | |
| 93 | ||
| 94 | /** | |
| 95 | * Obtain DBMS specific SQL code portion needed to declare an text type | |
| 96 | * field to be used in statements like CREATE TABLE. | |
| 97 | * | |
| 98 | * @param array $field associative array with the name of the properties | |
| 99 | * of the field being declared as array indexes. Currently, the types | |
| 100 | * of supported field properties are as follows: | |
| 101 | * | |
| 102 | * length | |
| 103 | * Integer value that determines the maximum length of the text | |
| 104 | * field. If this argument is missing the field should be | |
| 105 | * declared to have the longest length allowed by the DBMS. | |
| 106 | * | |
| 107 | * default | |
| 108 | * Text value to be used as default for this field. | |
| 109 | * | |
| 110 | * notnull | |
| 111 | * Boolean flag that indicates whether this field is constrained | |
| 112 | * to not be set to null. | |
| 113 | * @return string DBMS specific SQL code portion that should be used to | |
| 114 | * declare the specified field. | |
| 115 | * @access public | |
| 116 | */ | |
| 117 | function getTypeDeclaration($field) | |
| 118 | { | |
| 119 | $db =& $this->getDBInstance(); | |
| 120 | if (PEAR::isError($db)) { | |
| 121 | return $db; | |
| 122 | } | |
| 123 | ||
| 124 | switch ($field['type']) { | |
| 125 | case 'text': | |
| 126 | $length = (array_key_exists('length', $field) ? $field['length'] : (!PEAR::isError($length = $db->options['default_text_field_length']) ? $length : 4000)); | |
| 127 | return 'VARCHAR ('.$length.')'; | |
| 128 | case 'clob': | |
| 129 | return 'BLOB SUB_TYPE 1'; | |
| 130 | case 'blob': | |
| 131 | return 'BLOB SUB_TYPE 0'; | |
| 132 | case 'integer': | |
| 133 | return 'INTEGER'; | |
| 134 | case 'boolean': | |
| 135 | return 'CHAR (1)'; | |
| 136 | case 'date': | |
| 137 | return 'DATE'; | |
| 138 | case 'time': | |
| 139 | return 'TIME'; | |
| 140 | case 'timestamp': | |
| 141 | return 'TIMESTAMP'; | |
| 142 | case 'float': | |
| 143 | return 'DOUBLE PRECISION'; | |
| 144 | case 'decimal': | |
| 145 | return 'DECIMAL(18,'.$db->options['decimal_places'].')'; | |
| 146 | } | |
| 147 | return ''; | |
| 148 | } | |
| 149 | ||
| 150 | // }}} | |
| 151 | // {{{ _getIntegerDeclaration() | |
| 152 | ||
| 153 | /** | |
| 154 | * Obtain DBMS specific SQL code portion needed to declare an integer type | |
| 155 | * field to be used in statements like CREATE TABLE. | |
| 156 | * | |
| 157 | * @param string $name name the field to be declared. | |
| 158 | * @param array $field associative array with the name of the properties | |
| 159 | * of the field being declared as array indexes. Currently, the types | |
| 160 | * of supported field properties are as follows: | |
| 161 | * | |
| 162 | * unsigned | |
| 163 | * Boolean flag that indicates whether the field should be | |
| 164 | * declared as unsigned integer if possible. | |
| 165 | * | |
| 166 | * default | |
| 167 | * Integer value to be used as default for this field. | |
| 168 | * | |
| 169 | * notnull | |
| 170 | * Boolean flag that indicates whether this field is constrained | |
| 171 | * to not be set to null. | |
| 172 | * @return string DBMS specific SQL code portion that should be used to | |
| 173 | * declare the specified field. | |
| 174 | * @access protected | |
| 175 | */ | |
| 176 | function _getIntegerDeclaration($name, $field) | |
| 177 | { | |
| 178 | if (array_key_exists('unsigned', $field) && $field['unsigned']) { | |
| 179 | $db =& $this->getDBInstance(); | |
| 180 | if (PEAR::isError($db)) { | |
| 181 | return $db; | |
| 182 | } | |
| 183 | $db->warnings[] = "unsigned integer field \"$name\" is being declared as signed integer"; | |
| 184 | } | |
| 185 | ||
| 186 | if (array_key_exists('autoincrement', $field) && $field['autoincrement']) { | |
| 187 | return $name.' PRIMARY KEY'; | |
| 188 | } | |
| 189 | ||
| 190 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 191 | $this->quote($field['default'], 'integer') : ''; | |
| 192 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 193 | return $name.' INT'.$default.$notnull; | |
| 194 | } | |
| 195 | ||
| 196 | // }}} | |
| 197 | // {{{ _getTextDeclaration() | |
| 198 | ||
| 199 | /** | |
| 200 | * Obtain DBMS specific SQL code portion needed to declare a text type | |
| 201 | * field to be used in statements like CREATE TABLE. | |
| 202 | * | |
| 203 | * @param string $name name the field to be declared. | |
| 204 | * @param array $field associative array with the name of the properties | |
| 205 | * of the field being declared as array indexes. Currently, the types | |
| 206 | * of supported field properties are as follows: | |
| 207 | * | |
| 208 | * length | |
| 209 | * Integer value that determines the maximum length of the text | |
| 210 | * field. If this argument is missing the field should be | |
| 211 | * declared to have the longest length allowed by the DBMS. | |
| 212 | * | |
| 213 | * default | |
| 214 | * Text value to be used as default for this field. | |
| 215 | * | |
| 216 | * notnull | |
| 217 | * Boolean flag that indicates whether this field is constrained | |
| 218 | * to not be set to null. | |
| 219 | * @return string DBMS specific SQL code portion that should be used to | |
| 220 | * declare the specified field. | |
| 221 | * @access protected | |
| 222 | */ | |
| 223 | function _getTextDeclaration($name, $field) | |
| 224 | { | |
| 225 | $type = $this->getTypeDeclaration($field); | |
| 226 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 227 | $this->quote($field['default'], 'text') : ''; | |
| 228 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 229 | return $name.' '.$type.$default.$notnull; | |
| 230 | } | |
| 231 | ||
| 232 | // }}} | |
| 233 | // {{{ _getCLOBDeclaration() | |
| 234 | ||
| 235 | /** | |
| 236 | * Obtain DBMS specific SQL code portion needed to declare a character | |
| 237 | * large object type field to be used in statements like CREATE TABLE. | |
| 238 | * | |
| 239 | * @param string $name name the field to be declared. | |
| 240 | * @param array $field associative array with the name of the properties | |
| 241 | * of the field being declared as array indexes. Currently, the types | |
| 242 | * of supported field properties are as follows: | |
| 243 | * | |
| 244 | * length | |
| 245 | * Integer value that determines the maximum length of the large | |
| 246 | * object field. If this argument is missing the field should be | |
| 247 | * declared to have the longest length allowed by the DBMS. | |
| 248 | * | |
| 249 | * notnull | |
| 250 | * Boolean flag that indicates whether this field is constrained | |
| 251 | * to not be set to null. | |
| 252 | * @return string DBMS specific SQL code portion that should be used to | |
| 253 | * declare the specified field. | |
| 254 | * @access protected | |
| 255 | */ | |
| 256 | function _getCLOBDeclaration($name, $field) | |
| 257 | { | |
| 258 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 259 | return $name.' '.$this->getTypeDeclaration($field).$notnull; | |
| 260 | } | |
| 261 | ||
| 262 | // }}} | |
| 263 | // {{{ _getBLOBDeclaration() | |
| 264 | ||
| 265 | /** | |
| 266 | * Obtain DBMS specific SQL code portion needed to declare a binary large | |
| 267 | * object type field to be used in statements like CREATE TABLE. | |
| 268 | * | |
| 269 | * @param string $name name the field to be declared. | |
| 270 | * @param array $field associative array with the name of the properties | |
| 271 | * of the field being declared as array indexes. Currently, the types | |
| 272 | * of supported field properties are as follows: | |
| 273 | * | |
| 274 | * length | |
| 275 | * Integer value that determines the maximum length of the large | |
| 276 | * object field. If this argument is missing the field should be | |
| 277 | * declared to have the longest length allowed by the DBMS. | |
| 278 | * | |
| 279 | * notnull | |
| 280 | * Boolean flag that indicates whether this field is constrained | |
| 281 | * to not be set to null. | |
| 282 | * @return string DBMS specific SQL code portion that should be used to | |
| 283 | * declare the specified field. | |
| 284 | * @access protected | |
| 285 | */ | |
| 286 | function _getBLOBDeclaration($name, $field) | |
| 287 | { | |
| 288 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 289 | return $name.' '.$this->getTypeDeclaration($field).$notnull; | |
| 290 | } | |
| 291 | ||
| 292 | // }}} | |
| 293 | // {{{ _getDateDeclaration() | |
| 294 | ||
| 295 | /** | |
| 296 | * Obtain DBMS specific SQL code portion needed to declare a date type | |
| 297 | * field to be used in statements like CREATE TABLE. | |
| 298 | * | |
| 299 | * @param string $name name the field to be declared. | |
| 300 | * @param array $field associative array with the name of the properties | |
| 301 | * of the field being declared as array indexes. Currently, the types | |
| 302 | * of supported field properties are as follows: | |
| 303 | * | |
| 304 | * default | |
| 305 | * Date value to be used as default for this field. | |
| 306 | * | |
| 307 | * notnull | |
| 308 | * Boolean flag that indicates whether this field is constrained | |
| 309 | * to not be set to null. | |
| 310 | * @return string DBMS specific SQL code portion that should be used to | |
| 311 | * declare the specified field. | |
| 312 | * @access protected | |
| 313 | */ | |
| 314 | function _getDateDeclaration($name, $field) | |
| 315 | { | |
| 316 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 317 | $this->quote($field['default'], 'date') : ''; | |
| 318 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 319 | return $name.' '.$this->getTypeDeclaration($field).$default.$notnull; | |
| 320 | } | |
| 321 | ||
| 322 | // }}} | |
| 323 | // {{{ _getTimeDeclaration() | |
| 324 | ||
| 325 | /** | |
| 326 | * Obtain DBMS specific SQL code portion needed to declare a time | |
| 327 | * field to be used in statements like CREATE TABLE. | |
| 328 | * | |
| 329 | * @param string $name name the field to be declared. | |
| 330 | * @param array $field associative array with the name of the properties | |
| 331 | * of the field being declared as array indexes. Currently, the types | |
| 332 | * of supported field properties are as follows: | |
| 333 | * | |
| 334 | * default | |
| 335 | * Time value to be used as default for this field. | |
| 336 | * | |
| 337 | * notnull | |
| 338 | * Boolean flag that indicates whether this field is constrained | |
| 339 | * to not be set to null. | |
| 340 | * @return string DBMS specific SQL code portion that should be used to | |
| 341 | * declare the specified field. | |
| 342 | * @access protected | |
| 343 | */ | |
| 344 | function _getTimeDeclaration($name, $field) | |
| 345 | { | |
| 346 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 347 | $this->quote($field['default'], 'time') : ''; | |
| 348 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 349 | return $name.' '.$this->getTypeDeclaration($field).$default.$notnull; | |
| 350 | } | |
| 351 | ||
| 352 | // }}} | |
| 353 | // {{{ _getTimestampDeclaration() | |
| 354 | ||
| 355 | /** | |
| 356 | * Obtain DBMS specific SQL code portion needed to declare a timestamp | |
| 357 | * field to be used in statements like CREATE TABLE. | |
| 358 | * | |
| 359 | * @param string $name name the field to be declared. | |
| 360 | * @param array $field associative array with the name of the properties | |
| 361 | * of the field being declared as array indexes. Currently, the types | |
| 362 | * of supported field properties are as follows: | |
| 363 | * | |
| 364 | * default | |
| 365 | * Timestamp value to be used as default for this field. | |
| 366 | * | |
| 367 | * notnull | |
| 368 | * Boolean flag that indicates whether this field is constrained | |
| 369 | * to not be set to null. | |
| 370 | * @return string DBMS specific SQL code portion that should be used to | |
| 371 | * declare the specified field. | |
| 372 | * @access protected | |
| 373 | */ | |
| 374 | function _getTimestampDeclaration($name, $field) | |
| 375 | { | |
| 376 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 377 | $this->quote($field['default'], 'timestamp') : ''; | |
| 378 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 379 | return $name.' '.$this->getTypeDeclaration($field).$default.$notnull; | |
| 380 | } | |
| 381 | ||
| 382 | // }}} | |
| 383 | // {{{ _getFloatDeclaration() | |
| 384 | ||
| 385 | /** | |
| 386 | * Obtain DBMS specific SQL code portion needed to declare a float type | |
| 387 | * field to be used in statements like CREATE TABLE. | |
| 388 | * | |
| 389 | * @param string $name name the field to be declared. | |
| 390 | * @param array $field associative array with the name of the properties | |
| 391 | * of the field being declared as array indexes. Currently, the types | |
| 392 | * of supported field properties are as follows: | |
| 393 | * | |
| 394 | * default | |
| 395 | * Float value to be used as default for this field. | |
| 396 | * | |
| 397 | * notnull | |
| 398 | * Boolean flag that indicates whether this field is constrained | |
| 399 | * to not be set to null. | |
| 400 | * @return string DBMS specific SQL code portion that should be used to | |
| 401 | * declare the specified field. | |
| 402 | * @access protected | |
| 403 | */ | |
| 404 | function _getFloatDeclaration($name, $field) | |
| 405 | { | |
| 406 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 407 | $this->quote($field['default'], 'float') : ''; | |
| 408 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 409 | return $name.' '.$this->getTypeDeclaration($field).$default.$notnull; | |
| 410 | } | |
| 411 | ||
| 412 | // }}} | |
| 413 | // {{{ _getDecimalDeclaration() | |
| 414 | ||
| 415 | /** | |
| 416 | * Obtain DBMS specific SQL code portion needed to declare a decimal type | |
| 417 | * field to be used in statements like CREATE TABLE. | |
| 418 | * | |
| 419 | * @param string $name name the field to be declared. | |
| 420 | * @param array $field associative array with the name of the properties | |
| 421 | * of the field being declared as array indexes. Currently, the types | |
| 422 | * of supported field properties are as follows: | |
| 423 | * | |
| 424 | * default | |
| 425 | * Decimal value to be used as default for this field. | |
| 426 | * | |
| 427 | * notnull | |
| 428 | * Boolean flag that indicates whether this field is constrained | |
| 429 | * to not be set to null. | |
| 430 | * @return string DBMS specific SQL code portion that should be used to | |
| 431 | * declare the specified field. | |
| 432 | * @access protected | |
| 433 | */ | |
| 434 | function _getDecimalDeclaration($name, $field) | |
| 435 | { | |
| 436 | $default = array_key_exists('default', $field) ? ' DEFAULT '. | |
| 437 | $this->quote($field['default'], 'decimal') : ''; | |
| 438 | $notnull = (array_key_exists('notnull', $field) && $field['notnull']) ? ' NOT NULL' : ''; | |
| 439 | return $name.' '.$this->getTypeDeclaration($field).$default.$notnull; | |
| 440 | } | |
| 441 | ||
| 442 | // }}} | |
| 443 | // {{{ _quoteLOB() | |
| 444 | ||
| 445 | /** | |
| 446 | * Convert a text value into a DBMS specific format that is suitable to | |
| 447 | * compose query statements. | |
| 448 | * | |
| 449 | * @param $value | |
| 450 | * @return string text string that represents the given argument value in | |
| 451 | * a DBMS specific format. | |
| 452 | * @access protected | |
| 453 | */ | |
| 454 | function _quoteLOB($value) | |
| 455 | { | |
| 456 | $db =& $this->getDBInstance(); | |
| 457 | if (PEAR::isError($db)) { | |
| 458 | return $db; | |
| 459 | } | |
| 460 | ||
| 461 | if (PEAR::isError($connect = $db->connect())) { | |
| 462 | return $connect; | |
| 463 | } | |
| 464 | $close = true; | |
| 465 | if (is_resource($value)) { | |
| 466 | $close = false; | |
| 467 | } elseif (preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) { | |
| 468 | if ($match[1] == 'file://') { | |
| 469 | $value = $match[2]; | |
| 470 | } | |
| 471 | $value = @fopen($value, 'r'); | |
| 472 | } else { | |
| 473 | $fp = @tmpfile(); | |
| 474 | @fwrite($fp, $value); | |
| 475 | @rewind($fp); | |
| 476 | $value = $fp; | |
| 477 | } | |
| 478 | if ($db->in_transaction) { | |
| 479 | $blob_id = @ibase_blob_import($db->transaction_id, $value); | |
| 480 | } else { | |
| 481 | $blob_id = @ibase_blob_import($db->connection, $value); | |
| 482 | } | |
| 483 | if ($close) { | |
| 484 | @fclose($value); | |
| 485 | } | |
| 486 | return $blob_id; | |
| 487 | } | |
| 488 | ||
| 489 | // }}} | |
| 490 | // {{{ _quoteDecimal() | |
| 491 | ||
| 492 | /** | |
| 493 | * Convert a text value into a DBMS specific format that is suitable to | |
| 494 | * compose query statements. | |
| 495 | * | |
| 496 | * @param string $value text string value that is intended to be converted. | |
| 497 | * @return string text string that represents the given argument value in | |
| 498 | * a DBMS specific format. | |
| 499 | * @access protected | |
| 500 | */ | |
| 501 | function _quoteDecimal($value) | |
| 502 | { | |
| 503 | $db =& $this->getDBInstance(); | |
| 504 | if (PEAR::isError($db)) { | |
| 505 | return $db; | |
| 506 | } | |
| 507 | ||
| 508 | return (strval(round($value*pow(10.0, $db->options['decimal_places'])))); | |
| 509 | } | |
| 510 | ||
| 511 | // }}} | |
| 512 | // {{{ _retrieveLOB() | |
| 513 | ||
| 514 | /** | |
| 515 | * retrieve LOB from the database | |
| 516 | * | |
| 517 | * @param resource $lob stream handle | |
| 518 | * @return mixed MDB2_OK on success, a MDB2 error on failure | |
| 519 | * @access protected | |
| 520 | */ | |
| 521 | function _retrieveLOB(&$lob) | |
| 522 | { | |
| 523 | if (!array_key_exists('handle', $lob)) { | |
| 524 | $lob['handle'] = @ibase_blob_open($lob['ressource']); | |
| 525 | if (!$lob['handle']) { | |
| 526 | $db =& $this->getDBInstance(); | |
| 527 | if (PEAR::isError($db)) { | |
| 528 | return $db; | |
| 529 | } | |
| 530 | ||
| 531 | return $db->raiseError(MDB2_ERROR, null, null, | |
| 532 | '_retrieveLOB: Could not open fetched large object field' . @ibase_errmsg()); | |
| 533 | } | |
| 534 | } | |
| 535 | return MDB2_OK; | |
| 536 | } | |
| 537 | ||
| 538 | // }}} | |
| 539 | // {{{ _readLOB() | |
| 540 | ||
| 541 | /** | |
| 542 | * Read data from large object input stream. | |
| 543 | * | |
| 544 | * @param resource $lob stream handle | |
| 545 | * @param blob $data reference to a variable that will hold data to be | |
| 546 | * read from the large object input stream | |
| 547 | * @param int $length integer value that indicates the largest ammount of | |
| 548 | * data to be read from the large object input stream. | |
| 549 | * @return mixed length on success, a MDB2 error on failure | |
| 550 | * @access protected | |
| 551 | */ | |
| 552 | function _readLOB($lob, $length) | |
| 553 | { | |
| 554 | $data = ibase_blob_get($lob['handle'], $length); | |
| 555 | if (!is_string($data)) { | |
| 556 | $db =& $this->getDBInstance(); | |
| 557 | if (PEAR::isError($db)) { | |
| 558 | return $db; | |
| 559 | } | |
| 560 | ||
| 561 | return $db->raiseError(MDB2_ERROR, null, null, | |
| 562 | 'Read Result LOB: ' . @ibase_errmsg()); | |
| 563 | } | |
| 564 | return $data; | |
| 565 | } | |
| 566 | ||
| 567 | // }}} | |
| 568 | // {{{ _destroyLOB() | |
| 569 | ||
| 570 | /** | |
| 571 | * Free any resources allocated during the lifetime of the large object | |
| 572 | * handler object. | |
| 573 | * | |
| 574 | * @param resource $lob stream handle | |
| 575 | * @access protected | |
| 576 | */ | |
| 577 | function _destroyLOB($lob_index) | |
| 578 | { | |
| 579 | if (isset($this->lobs[$lob_index]['handle'])) { | |
| 580 | @ibase_blob_close($this->lobs[$lob_index]['handle']); | |
| 581 | } | |
| 582 | } | |
| 583 | ||
| 584 | // }}} | |
| 585 | // {{{ mapNativeDatatype() | |
| 586 | ||
| 587 | /** | |
| 588 | * Maps a native array description of a field to a MDB2 datatype and length | |
| 589 | * | |
| 590 | * @param array $field native field description | |
| 591 | * @return array containing the various possible types and the length | |
| 592 | * @access public | |
| 593 | */ | |
| 594 | function mapNativeDatatype($field) | |
| 595 | { | |
| 596 | $db_type = preg_replace('/\d/','', strtolower($field['typname']) ); | |
| 597 | $length = $field['attlen']; | |
| 598 | if ($length == '-1') { | |
| 599 | $length = $field['atttypmod']-4; | |
| 600 | } | |
| 601 | if ((int)$length <= 0) { | |
| 602 | $length = null; | |
| 603 | } | |
| 604 | $type = array(); | |
| 605 | switch ($db_type) { | |
| 606 | case 'smallint': | |
| 607 | case 'integer': | |
| 608 | $type[] = 'integer'; | |
| 609 | if ($length == '1') { | |
| 610 | $type[] = 'boolean'; | |
| 611 | } | |
| 612 | break; | |
| 613 | case 'char': | |
| 614 | case 'varchar': | |
| 615 | $type[] = 'text'; | |
| 616 | if ($length == '1') { | |
| 617 | $type[] = 'boolean'; | |
| 618 | } | |
| 619 | break; | |
| 620 | case 'date': | |
| 621 | $type[] = 'date'; | |
| 622 | $length = null; | |
| 623 | break; | |
| 624 | case 'timestamp': | |
| 625 | $type[] = 'timestamp'; | |
| 626 | $length = null; | |
| 627 | break; | |
| 628 | case 'time': | |
| 629 | $type[] = 'time'; | |
| 630 | $length = null; | |
| 631 | break; | |
| 632 | case 'float': | |
| 633 | case 'double precision': | |
| 634 | $type[] = 'float'; | |
| 635 | break; | |
| 636 | case 'decimal': | |
| 637 | case 'numeric': | |
| 638 | $type[] = 'decimal'; | |
| 639 | break; | |
| 640 | case 'blob': | |
| 641 | $type[] = 'blob'; | |
| 642 | $length = null; | |
| 643 | break; | |
| 644 | default: | |
| 645 | $db =& $this->getDBInstance(); | |
| 646 | if (PEAR::isError($db)) { | |
| 647 | return $db; | |
| 648 | } | |
| 649 | ||
| 650 | return $db->raiseError(MDB2_ERROR, null, null, | |
| 651 | 'getTableFieldDefinition: unknown database attribute type'); | |
| 652 | } | |
| 653 | ||
| 654 | return array($type, $length); | |
| 655 | } | |
| 656 | ||
| 657 | // }}} | |
| 658 | } | |
| 659 | ?> | |
