admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 1 | <?php if (!defined('BASEPATH')) exit('No direct script access allowed'); |
| 2 | /** |
| 3 | * Code Igniter |
| 4 | * |
| 5 | * An open source application development framework for PHP 4.3.2 or newer |
| 6 | * |
| 7 | * @package CodeIgniter |
| 8 | * @author Rick Ellis |
| 9 | * @copyright Copyright (c) 2006, pMachine, Inc. |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 10 | * @license http://www.codeignitor.com/user_guide/license.html |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 11 | * @link http://www.codeigniter.com |
| 12 | * @since Version 1.0 |
| 13 | * @filesource |
| 14 | */ |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 15 | |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 16 | // ------------------------------------------------------------------------ |
| 17 | |
| 18 | /** |
| 19 | * Active Record Class |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 20 | * |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 21 | * This is the platform-independent base Active Record implementation class. |
| 22 | * |
| 23 | * @package CodeIgniter |
| 24 | * @subpackage Drivers |
| 25 | * @category Database |
| 26 | * @author Rick Ellis |
| 27 | * @link http://www.codeigniter.com/user_guide/database/ |
| 28 | */ |
| 29 | class CI_DB_active_record extends CI_DB_driver { |
| 30 | |
| 31 | var $ar_select = array(); |
| 32 | var $ar_distinct = FALSE; |
| 33 | var $ar_from = array(); |
| 34 | var $ar_join = array(); |
| 35 | var $ar_where = array(); |
| 36 | var $ar_like = array(); |
| 37 | var $ar_groupby = array(); |
| 38 | var $ar_having = array(); |
| 39 | var $ar_limit = FALSE; |
| 40 | var $ar_offset = FALSE; |
| 41 | var $ar_order = FALSE; |
| 42 | var $ar_orderby = array(); |
| 43 | var $ar_set = array(); |
| 44 | |
| 45 | |
| 46 | /** |
| 47 | * Select |
| 48 | * |
| 49 | * Generates the SELECT portion of the query |
| 50 | * |
| 51 | * @access public |
| 52 | * @param string |
| 53 | * @return object |
| 54 | */ |
| 55 | function select($select = '*') |
| 56 | { |
| 57 | if (is_string($select)) |
| 58 | { |
| 59 | $select = explode(',', $select); |
| 60 | } |
| 61 | |
| 62 | foreach ($select as $val) |
| 63 | { |
| 64 | $val = trim($val); |
| 65 | |
| 66 | if ($val != '') |
| 67 | $this->ar_select[] = $val; |
| 68 | } |
| 69 | return $this; |
| 70 | } |
| 71 | |
| 72 | // -------------------------------------------------------------------- |
| 73 | |
| 74 | /** |
| 75 | * DISTINCT |
| 76 | * |
| 77 | * Sets a flag which tells the query string compiler to add DISTINCT |
| 78 | * |
| 79 | * @access public |
| 80 | * @param bool |
| 81 | * @return object |
| 82 | */ |
| 83 | function distinct($val = TRUE) |
| 84 | { |
| 85 | $this->ar_distinct = (is_bool($val)) ? $val : TRUE; |
| 86 | return $this; |
| 87 | } |
| 88 | |
| 89 | // -------------------------------------------------------------------- |
| 90 | |
| 91 | /** |
| 92 | * From |
| 93 | * |
| 94 | * Generates the FROM portion of the query |
| 95 | * |
| 96 | * @access public |
| 97 | * @param mixed can be a string or array |
| 98 | * @return object |
| 99 | */ |
| 100 | function from($from) |
| 101 | { |
| 102 | foreach ((array)$from as $val) |
| 103 | { |
| 104 | $this->ar_from[] = $this->dbprefix.$val; |
| 105 | } |
| 106 | return $this; |
| 107 | } |
| 108 | |
| 109 | // -------------------------------------------------------------------- |
| 110 | |
| 111 | /** |
| 112 | * Join |
| 113 | * |
| 114 | * Generates the JOIN portion of the query |
| 115 | * |
| 116 | * @access public |
| 117 | * @param string |
| 118 | * @param string the join condition |
| 119 | * @param string the type of join |
| 120 | * @return object |
| 121 | */ |
| 122 | function join($table, $cond, $type = '') |
| 123 | { |
| 124 | if ($type != '') |
| 125 | { |
| 126 | $type = strtoupper(trim($type)); |
| 127 | |
admin | ee54c11 | 2006-09-28 17:13:38 +0000 | [diff] [blame] | 128 | if ( ! in_array($type, array('LEFT', 'RIGHT', 'OUTER', 'INNER', 'LEFT OUTER', 'RIGHT OUTER'), TRUE)) |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 129 | { |
| 130 | $type = ''; |
| 131 | } |
| 132 | else |
| 133 | { |
| 134 | $type .= ' '; |
| 135 | } |
| 136 | } |
| 137 | |
admin | 402d1d5 | 2006-09-27 01:54:14 +0000 | [diff] [blame] | 138 | $this->ar_join[] = $type.'JOIN '.$this->dbprefix.$table.' ON '.$cond; |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 139 | return $this; |
| 140 | } |
| 141 | |
| 142 | // -------------------------------------------------------------------- |
| 143 | |
| 144 | /** |
| 145 | * Where |
| 146 | * |
| 147 | * Generates the WHERE portion of the query. Separates |
| 148 | * multiple calls with AND |
| 149 | * |
| 150 | * @access public |
| 151 | * @param mixed |
| 152 | * @param mixed |
| 153 | * @return object |
| 154 | */ |
| 155 | function where($key, $value = NULL) |
| 156 | { |
| 157 | return $this->_where($key, $value, 'AND '); |
| 158 | } |
| 159 | |
| 160 | // -------------------------------------------------------------------- |
| 161 | |
| 162 | /** |
| 163 | * OR Where |
| 164 | * |
| 165 | * Generates the WHERE portion of the query. Separates |
| 166 | * multiple calls with OR |
| 167 | * |
| 168 | * @access public |
| 169 | * @param mixed |
| 170 | * @param mixed |
| 171 | * @return object |
| 172 | */ |
| 173 | function orwhere($key, $value = NULL) |
| 174 | { |
| 175 | return $this->_where($key, $value, 'OR '); |
| 176 | } |
| 177 | |
| 178 | // -------------------------------------------------------------------- |
| 179 | |
| 180 | /** |
| 181 | * Where |
| 182 | * |
| 183 | * Called by where() or orwhere() |
| 184 | * |
| 185 | * @access private |
| 186 | * @param mixed |
| 187 | * @param mixed |
| 188 | * @param string |
| 189 | * @return object |
| 190 | */ |
| 191 | function _where($key, $value = NULL, $type = 'AND ') |
| 192 | { |
| 193 | if ( ! is_array($key)) |
| 194 | { |
| 195 | $key = array($key => $value); |
| 196 | } |
| 197 | |
| 198 | foreach ($key as $k => $v) |
| 199 | { |
| 200 | $prefix = (count($this->ar_where) == 0) ? '' : $type; |
| 201 | |
| 202 | if ( ! is_null($v)) |
| 203 | { |
| 204 | if ( ! $this->_has_operator($k)) |
| 205 | { |
| 206 | $k .= ' ='; |
| 207 | } |
| 208 | |
| 209 | $v = ' '.$this->escape($v); |
| 210 | } |
| 211 | |
| 212 | $this->ar_where[] = $prefix.$k.$v; |
| 213 | } |
| 214 | return $this; |
| 215 | } |
| 216 | |
| 217 | |
| 218 | |
| 219 | // -------------------------------------------------------------------- |
| 220 | |
| 221 | /** |
| 222 | * Like |
| 223 | * |
| 224 | * Generates a %LIKE% portion of the query. Separates |
| 225 | * multiple calls with AND |
| 226 | * |
| 227 | * @access public |
| 228 | * @param mixed |
| 229 | * @param mixed |
| 230 | * @return object |
| 231 | */ |
| 232 | function like($field, $match = '') |
| 233 | { |
| 234 | return $this->_like($field, $match, 'AND '); |
| 235 | } |
| 236 | |
| 237 | // -------------------------------------------------------------------- |
| 238 | |
| 239 | /** |
| 240 | * OR Like |
| 241 | * |
| 242 | * Generates a %LIKE% portion of the query. Separates |
| 243 | * multiple calls with OR |
| 244 | * |
| 245 | * @access public |
| 246 | * @param mixed |
| 247 | * @param mixed |
| 248 | * @return object |
| 249 | */ |
| 250 | function orlike($field, $match = '') |
| 251 | { |
| 252 | return $this->_like($field, $match, 'OR '); |
| 253 | } |
| 254 | |
| 255 | // -------------------------------------------------------------------- |
| 256 | |
| 257 | /** |
| 258 | * Like |
| 259 | * |
| 260 | * Called by like() or orlike() |
| 261 | * |
| 262 | * @access private |
| 263 | * @param mixed |
| 264 | * @param mixed |
| 265 | * @param string |
| 266 | * @return object |
| 267 | */ |
| 268 | function _like($field, $match = '', $type = 'AND ') |
| 269 | { |
| 270 | if ( ! is_array($field)) |
| 271 | { |
| 272 | $field = array($field => $match); |
| 273 | } |
| 274 | |
| 275 | foreach ($field as $k => $v) |
| 276 | { |
| 277 | $prefix = (count($this->ar_like) == 0) ? '' : $type; |
| 278 | |
| 279 | $v = $this->escape_str($v); |
| 280 | |
| 281 | $this->ar_like[] = $prefix." $k LIKE '%{$v}%'"; |
| 282 | } |
| 283 | return $this; |
| 284 | } |
| 285 | |
| 286 | // -------------------------------------------------------------------- |
| 287 | |
| 288 | /** |
| 289 | * GROUP BY |
| 290 | * |
| 291 | * @access public |
| 292 | * @param string |
| 293 | * @return object |
| 294 | */ |
| 295 | function groupby($by) |
| 296 | { |
| 297 | if (is_string($by)) |
| 298 | { |
| 299 | $by = explode(',', $by); |
| 300 | } |
| 301 | |
| 302 | foreach ($by as $val) |
| 303 | { |
| 304 | $val = trim($val); |
| 305 | |
| 306 | if ($val != '') |
| 307 | $this->ar_groupby[] = $val; |
| 308 | } |
| 309 | return $this; |
| 310 | } |
| 311 | |
| 312 | // -------------------------------------------------------------------- |
| 313 | |
| 314 | /** |
| 315 | * Sets the HAVING value |
| 316 | * |
| 317 | * Separates multiple calls with AND |
| 318 | * |
| 319 | * @access public |
| 320 | * @param string |
| 321 | * @param string |
| 322 | * @return object |
| 323 | */ |
| 324 | function having($key, $value = '') |
| 325 | { |
| 326 | return $this->_having($key, $value, 'AND '); |
| 327 | } |
| 328 | |
| 329 | // -------------------------------------------------------------------- |
| 330 | |
| 331 | /** |
| 332 | * Sets the OR HAVING value |
| 333 | * |
| 334 | * Separates multiple calls with OR |
| 335 | * |
| 336 | * @access public |
| 337 | * @param string |
| 338 | * @param string |
| 339 | * @return object |
| 340 | */ |
| 341 | function orhaving($key, $value = '') |
| 342 | { |
| 343 | return $this->_having($key, $value, 'OR '); |
| 344 | } |
| 345 | |
| 346 | // -------------------------------------------------------------------- |
| 347 | |
| 348 | /** |
| 349 | * Sets the HAVING values |
| 350 | * |
| 351 | * Called by having() or orhaving() |
| 352 | * |
| 353 | * @access private |
| 354 | * @param string |
| 355 | * @param string |
| 356 | * @return object |
| 357 | */ |
| 358 | function _having($key, $value = '', $type = 'AND ') |
| 359 | { |
| 360 | if ( ! is_array($key)) |
| 361 | { |
| 362 | $key = array($key => $value); |
| 363 | } |
| 364 | |
| 365 | foreach ($key as $k => $v) |
| 366 | { |
| 367 | $prefix = (count($this->ar_having) == 0) ? '' : $type; |
| 368 | |
| 369 | if ($v != '') |
| 370 | { |
| 371 | $v = ' '.$this->escape($v); |
| 372 | } |
| 373 | |
| 374 | $this->ar_having[] = $prefix.$k.$v; |
| 375 | } |
| 376 | return $this; |
| 377 | } |
| 378 | |
| 379 | // -------------------------------------------------------------------- |
| 380 | |
| 381 | /** |
| 382 | * Sets the ORDER BY value |
| 383 | * |
| 384 | * @access public |
| 385 | * @param string |
| 386 | * @param string direction: asc or desc |
| 387 | * @return object |
| 388 | */ |
| 389 | function orderby($orderby, $direction = '') |
| 390 | { |
| 391 | if (trim($direction) != '') |
| 392 | { |
admin | ee54c11 | 2006-09-28 17:13:38 +0000 | [diff] [blame] | 393 | $direction = (in_array(strtoupper(trim($direction)), array('ASC', 'DESC', 'RAND()'), TRUE)) ? ' '.$direction : ' ASC'; |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | $this->ar_orderby[] = $orderby.$direction; |
| 397 | return $this; |
| 398 | } |
| 399 | |
| 400 | // -------------------------------------------------------------------- |
| 401 | |
| 402 | /** |
| 403 | * Sets the LIMIT value |
| 404 | * |
| 405 | * @access public |
| 406 | * @param integer the limit value |
| 407 | * @param integer the offset value |
| 408 | * @return object |
| 409 | */ |
| 410 | function limit($value, $offset = '') |
| 411 | { |
| 412 | $this->ar_limit = $value; |
| 413 | |
| 414 | if ($offset != '') |
| 415 | $this->ar_offset = $offset; |
| 416 | |
| 417 | return $this; |
| 418 | } |
| 419 | |
| 420 | // -------------------------------------------------------------------- |
| 421 | |
| 422 | /** |
| 423 | * Sets the OFFSET value |
| 424 | * |
| 425 | * @access public |
| 426 | * @param integer the offset value |
| 427 | * @return object |
| 428 | */ |
| 429 | function offset($value) |
| 430 | { |
| 431 | $this->ar_offset = $value; |
| 432 | return $this; |
| 433 | } |
| 434 | |
| 435 | // -------------------------------------------------------------------- |
| 436 | |
| 437 | /** |
| 438 | * The "set" function. Allows key/value pairs to be set for inserting or updating |
| 439 | * |
| 440 | * @access public |
| 441 | * @param mixed |
| 442 | * @param string |
| 443 | * @return object |
| 444 | */ |
| 445 | function set($key, $value = '') |
| 446 | { |
| 447 | $key = $this->_object_to_array($key); |
| 448 | |
| 449 | if ( ! is_array($key)) |
| 450 | { |
| 451 | $key = array($key => $value); |
| 452 | } |
| 453 | |
| 454 | foreach ($key as $k => $v) |
| 455 | { |
| 456 | $this->ar_set[$k] = $this->escape($v); |
| 457 | } |
| 458 | |
| 459 | return $this; |
| 460 | } |
| 461 | |
| 462 | // -------------------------------------------------------------------- |
| 463 | |
| 464 | /** |
| 465 | * Get |
| 466 | * |
| 467 | * Compiles the select statement based on the other functions called |
| 468 | * and runs the query |
| 469 | * |
| 470 | * @access public |
| 471 | * @param string the limit clause |
| 472 | * @param string the offset clause |
| 473 | * @return object |
| 474 | */ |
| 475 | function get($table = '', $limit = null, $offset = null) |
| 476 | { |
| 477 | if ($table != '') |
| 478 | { |
| 479 | $this->from($table); |
| 480 | } |
| 481 | |
| 482 | if ( ! is_null($limit)) |
| 483 | { |
| 484 | $this->limit($limit, $offset); |
| 485 | } |
| 486 | |
| 487 | $sql = $this->_compile_select(); |
| 488 | |
| 489 | $this->_reset_select(); |
| 490 | return $this->query($sql); |
| 491 | } |
| 492 | |
| 493 | // -------------------------------------------------------------------- |
| 494 | |
| 495 | /** |
| 496 | * GetWhere |
| 497 | * |
| 498 | * Allows the where clause, limit and offset to be added directly |
| 499 | * |
| 500 | * @access public |
| 501 | * @param string the where clause |
| 502 | * @param string the limit clause |
| 503 | * @param string the offset clause |
| 504 | * @return object |
| 505 | */ |
| 506 | function getwhere($table = '', $where = null, $limit = null, $offset = null) |
| 507 | { |
| 508 | if ($table != '') |
| 509 | { |
| 510 | $this->from($table); |
| 511 | } |
| 512 | |
| 513 | if ( ! is_null($where)) |
| 514 | { |
| 515 | $this->where($where); |
| 516 | } |
| 517 | |
| 518 | if ( ! is_null($limit)) |
| 519 | { |
| 520 | $this->limit($limit, $offset); |
| 521 | } |
| 522 | |
| 523 | $sql = $this->_compile_select(); |
| 524 | |
| 525 | $this->_reset_select(); |
| 526 | return $this->query($sql); |
| 527 | } |
| 528 | |
| 529 | // -------------------------------------------------------------------- |
| 530 | |
| 531 | /** |
| 532 | * Insert |
| 533 | * |
| 534 | * Compiles an insert string and runs the query |
| 535 | * |
| 536 | * @access public |
| 537 | * @param string the table to retrieve the results from |
| 538 | * @param array an associative array of insert values |
| 539 | * @return object |
| 540 | */ |
| 541 | function insert($table = '', $set = NULL) |
| 542 | { |
| 543 | if ( ! is_null($set)) |
| 544 | { |
| 545 | $this->set($set); |
| 546 | } |
| 547 | |
| 548 | if (count($this->ar_set) == 0) |
| 549 | { |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 550 | if ($this->db_debug) |
| 551 | { |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 552 | return $this->display_error('db_must_use_set'); |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 553 | } |
| 554 | return FALSE; |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | if ($table == '') |
| 558 | { |
| 559 | if ( ! isset($this->ar_from[0])) |
| 560 | { |
| 561 | if ($this->db_debug) |
| 562 | { |
| 563 | return $this->display_error('db_must_set_table'); |
| 564 | } |
| 565 | return FALSE; |
| 566 | } |
| 567 | |
| 568 | $table = $this->ar_from[0]; |
| 569 | } |
| 570 | |
| 571 | $sql = $this->_insert($this->dbprefix.$table, array_keys($this->ar_set), array_values($this->ar_set)); |
| 572 | |
| 573 | $this->_reset_write(); |
| 574 | return $this->query($sql); |
| 575 | } |
| 576 | |
| 577 | // -------------------------------------------------------------------- |
| 578 | |
| 579 | /** |
| 580 | * Update |
| 581 | * |
| 582 | * Compiles an update string and runs the query |
| 583 | * |
| 584 | * @access public |
| 585 | * @param string the table to retrieve the results from |
| 586 | * @param array an associative array of update values |
| 587 | * @param mixed the where clause |
| 588 | * @return object |
| 589 | */ |
| 590 | function update($table = '', $set = NULL, $where = null) |
| 591 | { |
| 592 | if ( ! is_null($set)) |
| 593 | { |
| 594 | $this->set($set); |
| 595 | } |
| 596 | |
| 597 | if (count($this->ar_set) == 0) |
| 598 | { |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 599 | if ($this->db_debug) |
| 600 | { |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 601 | return $this->display_error('db_must_use_set'); |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 602 | } |
| 603 | return FALSE; |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 604 | } |
| 605 | |
| 606 | if ($table == '') |
| 607 | { |
| 608 | if ( ! isset($this->ar_from[0])) |
| 609 | { |
| 610 | if ($this->db_debug) |
| 611 | { |
| 612 | return $this->display_error('db_must_set_table'); |
| 613 | } |
| 614 | return FALSE; |
| 615 | } |
| 616 | |
| 617 | $table = $this->ar_from[0]; |
| 618 | } |
| 619 | |
| 620 | if ($where != null) |
| 621 | { |
| 622 | $this->where($where); |
| 623 | } |
| 624 | |
| 625 | $sql = $this->_update($this->dbprefix.$table, $this->ar_set, $this->ar_where); |
| 626 | |
| 627 | $this->_reset_write(); |
| 628 | return $this->query($sql); |
| 629 | } |
| 630 | |
| 631 | // -------------------------------------------------------------------- |
| 632 | |
| 633 | /** |
| 634 | * Delete |
| 635 | * |
| 636 | * Compiles a delete string and runs the query |
| 637 | * |
| 638 | * @access public |
| 639 | * @param string the table to retrieve the results from |
| 640 | * @param mixed the where clause |
| 641 | * @return object |
| 642 | */ |
| 643 | function delete($table = '', $where = '') |
| 644 | { |
| 645 | if ($table == '') |
| 646 | { |
| 647 | if ( ! isset($this->ar_from[0])) |
| 648 | { |
| 649 | if ($this->db_debug) |
| 650 | { |
| 651 | return $this->display_error('db_must_set_table'); |
| 652 | } |
| 653 | return FALSE; |
| 654 | } |
| 655 | |
| 656 | $table = $this->ar_from[0]; |
| 657 | } |
| 658 | |
| 659 | if ($where != '') |
| 660 | { |
| 661 | $this->where($where); |
| 662 | } |
| 663 | |
| 664 | if (count($this->ar_where) == 0) |
| 665 | { |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 666 | if ($this->db_debug) |
| 667 | { |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 668 | return $this->display_error('db_del_must_use_where'); |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 669 | } |
| 670 | return FALSE; |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 671 | } |
| 672 | |
| 673 | $sql = $this->_delete($this->dbprefix.$table, $this->ar_where); |
| 674 | |
| 675 | $this->_reset_write(); |
| 676 | return $this->query($sql); |
| 677 | } |
| 678 | |
| 679 | // -------------------------------------------------------------------- |
| 680 | |
| 681 | /** |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 682 | * Use Table - DEPRECATED |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 683 | * |
| 684 | * @deprecated use $this->db->from instead |
| 685 | */ |
| 686 | function use_table($table) |
| 687 | { |
| 688 | return $this->from($table); |
| 689 | return $this; |
| 690 | } |
| 691 | |
| 692 | // -------------------------------------------------------------------- |
| 693 | |
| 694 | /** |
| 695 | * ORDER BY - DEPRECATED |
| 696 | * |
| 697 | * @deprecated use $this->db->orderby() instead |
| 698 | */ |
| 699 | function order_by($orderby, $direction = '') |
| 700 | { |
| 701 | return $this->orderby($orderby, $direction); |
| 702 | } |
| 703 | |
| 704 | // -------------------------------------------------------------------- |
| 705 | |
| 706 | /** |
| 707 | * Tests whether the string has an SQL operator |
| 708 | * |
| 709 | * @access private |
| 710 | * @param string |
| 711 | * @return bool |
| 712 | */ |
| 713 | function _has_operator($str) |
| 714 | { |
| 715 | $str = trim($str); |
| 716 | if ( ! preg_match("/(\s|<|>|!|=|is null|is not null)/i", $str)) |
| 717 | { |
| 718 | return FALSE; |
| 719 | } |
| 720 | |
| 721 | return TRUE; |
| 722 | } |
| 723 | |
| 724 | // -------------------------------------------------------------------- |
| 725 | |
| 726 | /** |
| 727 | * Compile the SELECT statement |
| 728 | * |
admin | e334c47 | 2006-10-21 19:44:22 +0000 | [diff] [blame^] | 729 | * Generates a query string based on which functions were used. |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 730 | * Should not be called directly. The get() function calls it. |
| 731 | * |
| 732 | * @access private |
| 733 | * @return string |
| 734 | */ |
| 735 | function _compile_select() |
| 736 | { |
| 737 | $sql = ( ! $this->ar_distinct) ? 'SELECT ' : 'SELECT DISTINCT '; |
| 738 | |
| 739 | $sql .= (count($this->ar_select) == 0) ? '*' : implode(', ', $this->ar_select); |
| 740 | |
| 741 | if (count($this->ar_from) > 0) |
| 742 | { |
| 743 | $sql .= "\nFROM "; |
| 744 | $sql .= implode(', ', $this->ar_from); |
| 745 | } |
| 746 | |
| 747 | if (count($this->ar_join) > 0) |
| 748 | { |
| 749 | $sql .= "\n"; |
| 750 | $sql .= implode("\n", $this->ar_join); |
| 751 | } |
| 752 | |
| 753 | if (count($this->ar_where) > 0 OR count($this->ar_like) > 0) |
| 754 | { |
| 755 | $sql .= "\nWHERE "; |
| 756 | } |
| 757 | |
| 758 | $sql .= implode("\n", $this->ar_where); |
| 759 | |
| 760 | if (count($this->ar_like) > 0) |
| 761 | { |
| 762 | if (count($this->ar_where) > 0) |
| 763 | { |
| 764 | $sql .= " AND "; |
| 765 | } |
| 766 | |
| 767 | $sql .= implode("\n", $this->ar_like); |
| 768 | } |
| 769 | |
| 770 | if (count($this->ar_groupby) > 0) |
| 771 | { |
| 772 | $sql .= "\nGROUP BY "; |
| 773 | $sql .= implode(', ', $this->ar_groupby); |
| 774 | } |
| 775 | |
| 776 | if (count($this->ar_having) > 0) |
| 777 | { |
| 778 | $sql .= "\nHAVING "; |
| 779 | $sql .= implode("\n", $this->ar_having); |
| 780 | } |
| 781 | |
| 782 | if (count($this->ar_orderby) > 0) |
| 783 | { |
| 784 | $sql .= "\nORDER BY "; |
| 785 | $sql .= implode(', ', $this->ar_orderby); |
| 786 | |
| 787 | if ($this->ar_order !== FALSE) |
| 788 | { |
| 789 | $sql .= ($this->ar_order == 'desc') ? ' DESC' : ' ASC'; |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | if (is_numeric($this->ar_limit)) |
| 794 | { |
| 795 | $sql .= "\n"; |
| 796 | $sql = $this->_limit($sql, $this->ar_limit, $this->ar_offset); |
| 797 | } |
| 798 | |
| 799 | return $sql; |
| 800 | } |
| 801 | |
| 802 | // -------------------------------------------------------------------- |
| 803 | |
| 804 | /** |
| 805 | * Object to Array |
| 806 | * |
admin | fafe28b | 2006-10-21 19:08:17 +0000 | [diff] [blame] | 807 | * Takes an object as input and converts the class variables to array key/vals |
admin | ac94f38 | 2006-09-24 20:28:12 +0000 | [diff] [blame] | 808 | * |
| 809 | * @access public |
| 810 | * @param object |
| 811 | * @return array |
| 812 | */ |
| 813 | function _object_to_array($object) |
| 814 | { |
| 815 | if ( ! is_object($object)) |
| 816 | { |
| 817 | return $object; |
| 818 | } |
| 819 | |
| 820 | $array = array(); |
| 821 | foreach (get_object_vars($object) as $key => $val) |
| 822 | { |
| 823 | if ( ! is_object($val) AND ! is_array($val)) |
| 824 | { |
| 825 | $array[$key] = $val; |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | return $array; |
| 830 | } |
| 831 | |
| 832 | // -------------------------------------------------------------------- |
| 833 | |
| 834 | /** |
| 835 | * Resets the active record values. Called by the get() function |
| 836 | * |
| 837 | * @access private |
| 838 | * @return void |
| 839 | */ |
| 840 | function _reset_select() |
| 841 | { |
| 842 | $this->ar_select = array(); |
| 843 | $this->ar_distinct = FALSE; |
| 844 | $this->ar_from = array(); |
| 845 | $this->ar_join = array(); |
| 846 | $this->ar_where = array(); |
| 847 | $this->ar_like = array(); |
| 848 | $this->ar_groupby = array(); |
| 849 | $this->ar_having = array(); |
| 850 | $this->ar_limit = FALSE; |
| 851 | $this->ar_offset = FALSE; |
| 852 | $this->ar_order = FALSE; |
| 853 | $this->ar_orderby = array(); |
| 854 | } |
| 855 | |
| 856 | // -------------------------------------------------------------------- |
| 857 | |
| 858 | /** |
| 859 | * Resets the active record "write" values. |
| 860 | * |
| 861 | * Called by the insert() or update() functions |
| 862 | * |
| 863 | * @access private |
| 864 | * @return void |
| 865 | */ |
| 866 | function _reset_write() |
| 867 | { |
| 868 | $this->ar_set = array(); |
| 869 | $this->ar_from = array(); |
| 870 | $this->ar_where = array(); |
| 871 | } |
| 872 | |
| 873 | } |
| 874 | |
| 875 | ?> |