Builder.php 32.7 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

namespace think\db;

use PDO;
use think\Exception;

abstract class Builder
{
    // connection对象实例
    protected $connection;
    // 查询对象实例
    protected $query;

    // 数据库表达式
    protected $exp = ['eq' => '=', 'neq' => '<>', 'gt' => '>', 'egt' => '>=', 'lt' => '<', 'elt' => '<=', 'notlike' => 'NOT LIKE', 'not like' => 'NOT LIKE', 'like' => 'LIKE', 'in' => 'IN', 'exp' => 'EXP', 'notin' => 'NOT IN', 'not in' => 'NOT IN', 'between' => 'BETWEEN', 'not between' => 'NOT BETWEEN', 'notbetween' => 'NOT BETWEEN', 'exists' => 'EXISTS', 'notexists' => 'NOT EXISTS', 'not exists' => 'NOT EXISTS', 'null' => 'NULL', 'notnull' => 'NOT NULL', 'not null' => 'NOT NULL', '> time' => '> TIME', '< time' => '< TIME', '>= time' => '>= TIME', '<= time' => '<= TIME', 'between time' => 'BETWEEN TIME', 'not between time' => 'NOT BETWEEN TIME', 'notbetween time' => 'NOT BETWEEN TIME'];

    // SQL表达式
    protected $selectSql    = 'SELECT%DISTINCT% %FIELD% FROM %TABLE%%FORCE%%JOIN%%WHERE%%GROUP%%HAVING%%UNION%%ORDER%%LIMIT%%LOCK%%COMMENT%';
    protected $insertSql    = '%INSERT% INTO %TABLE% (%FIELD%) VALUES (%DATA%) %COMMENT%';
    protected $insertAllSql = '%INSERT% INTO %TABLE% (%FIELD%) %DATA% %COMMENT%';
    protected $updateSql    = 'UPDATE %TABLE% SET %SET% %JOIN% %WHERE% %ORDER%%LIMIT% %LOCK%%COMMENT%';
    protected $deleteSql    = 'DELETE FROM %TABLE% %USING% %JOIN% %WHERE% %ORDER%%LIMIT% %LOCK%%COMMENT%';

    /**
     * 构造函数
     * @access public
     * @param Connection    $connection 数据库连接对象实例
     * @param Query         $query      数据库查询对象实例
     */
    public function __construct(Connection $connection, Query $query)
    {
        $this->connection = $connection;
        $this->query      = $query;
    }

    /**
     * 获取当前的连接对象实例
     * @access public
     * @return Connection
     */
    public function getConnection()
    {
        return $this->connection;
    }

    /**
     * 获取当前的Query对象实例
     * @access public
     * @return Query
     */
    public function getQuery()
    {
        return $this->query;
    }

    /**
     * 将SQL语句中的__TABLE_NAME__字符串替换成带前缀的表名(小写)
     * @access protected
     * @param string $sql sql语句
     * @return string
     */
    protected function parseSqlTable($sql)
    {
        return $this->query->parseSqlTable($sql);
    }

    /**
     * 数据分析
     * @access protected
     * @param array     $data 数据
     * @param array     $options 查询参数
     * @return array
     * @throws Exception
     */
    protected function parseData($data, $options)
    {
        if (empty($data)) {
            return [];
        }

        // 获取绑定信息
        $bind = $this->query->getFieldsBind($options['table']);
        if ('*' == $options['field']) {
            $fields = array_keys($bind);
        } else {
            $fields = $options['field'];
        }

        $result = [];
        foreach ($data as $key => $val) {
            if ('*' != $options['field'] && !in_array($key, $fields, true)) {
                continue;
            }

            $item = $this->parseKey($key, $options, true);
            if ($val instanceof Expression) {
                $result[$item] = $val->getValue();
                continue;
            } elseif (is_object($val) && method_exists($val, '__toString')) {
                // 对象数据写入
                $val = $val->__toString();
            }
            if (false === strpos($key, '.') && !in_array($key, $fields, true)) {
                if ($options['strict']) {
                    throw new Exception('fields not exists:[' . $key . ']');
                }
            } elseif (is_null($val)) {
                $result[$item] = 'NULL';
            } elseif (is_array($val) && !empty($val)) {
                switch (strtolower($val[0])) {
                    case 'inc':
                        $result[$item] = $item . '+' . floatval($val[1]);
                        break;
                    case 'dec':
                        $result[$item] = $item . '-' . floatval($val[1]);
                        break;
                    case 'exp':
                        throw new Exception('not support data:[' . $val[0] . ']');
                }
            } elseif (is_scalar($val)) {
                // 过滤非标量数据
                if (0 === strpos($val, ':') && $this->query->isBind(substr($val, 1))) {
                    $result[$item] = $val;
                } else {
                    $key = str_replace('.', '_', $key);
                    $this->query->bind('data__' . $key, $val, isset($bind[$key]) ? $bind[$key] : PDO::PARAM_STR);
                    $result[$item] = ':data__' . $key;
                }
            }
        }
        return $result;
    }

    /**
     * 字段名分析
     * @access protected
     * @param string $key
     * @param array  $options
     * @return string
     */
    protected function parseKey($key, $options = [], $strict = false)
    {
        return $key;
    }

    /**
     * value分析
     * @access protected
     * @param mixed     $value
     * @param string    $field
     * @return string|array
     */
    protected function parseValue($value, $field = '')
    {
        if (is_string($value)) {
            $value = strpos($value, ':') === 0 && $this->query->isBind(substr($value, 1)) ? $value : $this->connection->quote($value);
        } elseif (is_array($value)) {
            $value = array_map([$this, 'parseValue'], $value);
        } elseif (is_bool($value)) {
            $value = $value ? '1' : '0';
        } elseif (is_null($value)) {
            $value = 'null';
        }
        return $value;
    }

    /**
     * field分析
     * @access protected
     * @param mixed     $fields
     * @param array     $options
     * @return string
     */
    protected function parseField($fields, $options = [])
    {
        if ('*' == $fields || empty($fields)) {
            $fieldsStr = '*';
        } elseif (is_array($fields)) {
            // 支持 'field1'=>'field2' 这样的字段别名定义
            $array = [];
            foreach ($fields as $key => $field) {
                if ($field instanceof Expression) {
                    $array[] = $field->getValue();
                } elseif (!is_numeric($key)) {
                    $array[] = $this->parseKey($key, $options) . ' AS ' . $this->parseKey($field, $options, true);
                } else {
                    $array[] = $this->parseKey($field, $options);
                }
            }
            $fieldsStr = implode(',', $array);
        }
        return $fieldsStr;
    }

    /**
     * table分析
     * @access protected
     * @param mixed $tables
     * @param array $options
     * @return string
     */
    protected function parseTable($tables, $options = [])
    {
        $item = [];
        foreach ((array) $tables as $key => $table) {
            if (!is_numeric($key)) {
                $key    = $this->parseSqlTable($key);
                $item[] = $this->parseKey($key) . ' ' . (isset($options['alias'][$table]) ? $this->parseKey($options['alias'][$table]) : $this->parseKey($table));
            } else {
                $table = $this->parseSqlTable($table);
                if (isset($options['alias'][$table])) {
                    $item[] = $this->parseKey($table) . ' ' . $this->parseKey($options['alias'][$table]);
                } else {
                    $item[] = $this->parseKey($table);
                }
            }
        }
        return implode(',', $item);
    }

    /**
     * where分析
     * @access protected
     * @param mixed $where   查询条件
     * @param array $options 查询参数
     * @return string
     */
    protected function parseWhere($where, $options)
    {
        $whereStr = $this->buildWhere($where, $options);
        if (!empty($options['soft_delete'])) {
            // 附加软删除条件
            list($field, $condition) = $options['soft_delete'];

            $binds    = $this->query->getFieldsBind($options['table']);
            $whereStr = $whereStr ? '( ' . $whereStr . ' ) AND ' : '';
            $whereStr = $whereStr . $this->parseWhereItem($field, $condition, '', $options, $binds);
        }
        return empty($whereStr) ? '' : ' WHERE ' . $whereStr;
    }

    /**
     * 生成查询条件SQL
     * @access public
     * @param mixed     $where
     * @param array     $options
     * @return string
     */
    public function buildWhere($where, $options)
    {
        if (empty($where)) {
            $where = [];
        }

        if ($where instanceof Query) {
            return $this->buildWhere($where->getOptions('where'), $options);
        }

        $whereStr = '';
        $binds    = $this->query->getFieldsBind($options['table']);
        foreach ($where as $key => $val) {
            $str = [];
            foreach ($val as $field => $value) {
                if ($value instanceof Expression) {
                    $str[] = ' ' . $key . ' ( ' . $value->getValue() . ' )';
                } elseif ($value instanceof \Closure) {
                    // 使用闭包查询
                    $query = new Query($this->connection);
                    call_user_func_array($value, [ & $query]);
                    $whereClause = $this->buildWhere($query->getOptions('where'), $options);
                    if (!empty($whereClause)) {
                        $str[] = ' ' . $key . ' ( ' . $whereClause . ' )';
                    }
                } elseif (strpos($field, '|')) {
                    // 不同字段使用相同查询条件(OR)
                    $array = explode('|', $field);
                    $item  = [];
                    foreach ($array as $k) {
                        $item[] = $this->parseWhereItem($k, $value, '', $options, $binds);
                    }
                    $str[] = ' ' . $key . ' ( ' . implode(' OR ', $item) . ' )';
                } elseif (strpos($field, '&')) {
                    // 不同字段使用相同查询条件(AND)
                    $array = explode('&', $field);
                    $item  = [];
                    foreach ($array as $k) {
                        $item[] = $this->parseWhereItem($k, $value, '', $options, $binds);
                    }
                    $str[] = ' ' . $key . ' ( ' . implode(' AND ', $item) . ' )';
                } else {
                    // 对字段使用表达式查询
                    $field = is_string($field) ? $field : '';
                    $str[] = ' ' . $key . ' ' . $this->parseWhereItem($field, $value, $key, $options, $binds);
                }
            }

            $whereStr .= empty($whereStr) ? substr(implode(' ', $str), strlen($key) + 1) : implode(' ', $str);
        }

        return $whereStr;
    }

    // where子单元分析
    protected function parseWhereItem($field, $val, $rule = '', $options = [], $binds = [], $bindName = null)
    {
        // 字段分析
        $key = $field ? $this->parseKey($field, $options, true) : '';

        // 查询规则和条件
        if (!is_array($val)) {
            $val = is_null($val) ? ['null', ''] : ['=', $val];
        }
        list($exp, $value) = $val;

        // 对一个字段使用多个查询条件
        if (is_array($exp)) {
            $item = array_pop($val);
            // 传入 or 或者 and
            if (is_string($item) && in_array($item, ['AND', 'and', 'OR', 'or'])) {
                $rule = $item;
            } else {
                array_push($val, $item);
            }
            foreach ($val as $k => $item) {
                $bindName = 'where_' . str_replace('.', '_', $field) . '_' . $k;
                $str[]    = $this->parseWhereItem($field, $item, $rule, $options, $binds, $bindName);
            }
            return '( ' . implode(' ' . $rule . ' ', $str) . ' )';
        }

        // 检测操作符
        if (!in_array($exp, $this->exp)) {
            $exp = strtolower($exp);
            if (isset($this->exp[$exp])) {
                $exp = $this->exp[$exp];
            } else {
                throw new Exception('where express error:' . $exp);
            }
        }
        $bindName = $bindName ?: 'where_' . $rule . '_' . str_replace(['.', '-'], '_', $field);
        if (preg_match('/\W/', $bindName)) {
            // 处理带非单词字符的字段名
            $bindName = md5($bindName);
        }

        if ($value instanceof Expression) {

        } elseif (is_object($value) && method_exists($value, '__toString')) {
            // 对象数据写入
            $value = $value->__toString();
        }

        $bindType = isset($binds[$field]) ? $binds[$field] : PDO::PARAM_STR;
        if (is_scalar($value) && array_key_exists($field, $binds) && !in_array($exp, ['EXP', 'NOT NULL', 'NULL', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN']) && strpos($exp, 'TIME') === false) {
            if (strpos($value, ':') !== 0 || !$this->query->isBind(substr($value, 1))) {
                if ($this->query->isBind($bindName)) {
                    $bindName .= '_' . str_replace('.', '_', uniqid('', true));
                }
                $this->query->bind($bindName, $value, $bindType);
                $value = ':' . $bindName;
            }
        }

        $whereStr = '';
        if (in_array($exp, ['=', '<>', '>', '>=', '<', '<='])) {
            // 比较运算
            if ($value instanceof \Closure) {
                $whereStr .= $key . ' ' . $exp . ' ' . $this->parseClosure($value);
            } else {
                $whereStr .= $key . ' ' . $exp . ' ' . $this->parseValue($value, $field);
            }
        } elseif ('LIKE' == $exp || 'NOT LIKE' == $exp) {
            // 模糊匹配
            if (is_array($value)) {
                foreach ($value as $item) {
                    $array[] = $key . ' ' . $exp . ' ' . $this->parseValue($item, $field);
                }
                $logic = isset($val[2]) ? $val[2] : 'AND';
                $whereStr .= '(' . implode(' ' . strtoupper($logic) . ' ', $array) . ')';
            } else {
                $whereStr .= $key . ' ' . $exp . ' ' . $this->parseValue($value, $field);
            }
        } elseif ('EXP' == $exp) {
            // 表达式查询
            if ($value instanceof Expression) {
                $whereStr .= '( ' . $key . ' ' . $value->getValue() . ' )';
            } else {
                throw new Exception('where express error:' . $exp);
            }
        } elseif (in_array($exp, ['NOT NULL', 'NULL'])) {
            // NULL 查询
            $whereStr .= $key . ' IS ' . $exp;
        } elseif (in_array($exp, ['NOT IN', 'IN'])) {
            // IN 查询
            if ($value instanceof \Closure) {
                $whereStr .= $key . ' ' . $exp . ' ' . $this->parseClosure($value);
            } else {
                $value = array_unique(is_array($value) ? $value : explode(',', $value));
                if (array_key_exists($field, $binds)) {
                    $bind  = [];
                    $array = [];
                    $i     = 0;
                    foreach ($value as $v) {
                        $i++;
                        if ($this->query->isBind($bindName . '_in_' . $i)) {
                            $bindKey = $bindName . '_in_' . uniqid() . '_' . $i;
                        } else {
                            $bindKey = $bindName . '_in_' . $i;
                        }
                        $bind[$bindKey] = [$v, $bindType];
                        $array[]        = ':' . $bindKey;
                    }
                    $this->query->bind($bind);
                    $zone = implode(',', $array);
                } else {
                    $zone = implode(',', $this->parseValue($value, $field));
                }
                $whereStr .= $key . ' ' . $exp . ' (' . (empty($zone) ? "''" : $zone) . ')';
            }
        } elseif (in_array($exp, ['NOT BETWEEN', 'BETWEEN'])) {
            // BETWEEN 查询
            $data = is_array($value) ? $value : explode(',', $value);
            if (array_key_exists($field, $binds)) {
                if ($this->query->isBind($bindName . '_between_1')) {
                    $bindKey1 = $bindName . '_between_1' . uniqid();
                    $bindKey2 = $bindName . '_between_2' . uniqid();
                } else {
                    $bindKey1 = $bindName . '_between_1';
                    $bindKey2 = $bindName . '_between_2';
                }
                $bind = [
                    $bindKey1 => [$data[0], $bindType],
                    $bindKey2 => [$data[1], $bindType],
                ];
                $this->query->bind($bind);
                $between = ':' . $bindKey1 . ' AND :' . $bindKey2;
            } else {
                $between = $this->parseValue($data[0], $field) . ' AND ' . $this->parseValue($data[1], $field);
            }
            $whereStr .= $key . ' ' . $exp . ' ' . $between;
        } elseif (in_array($exp, ['NOT EXISTS', 'EXISTS'])) {
            // EXISTS 查询
            if ($value instanceof \Closure) {
                $whereStr .= $exp . ' ' . $this->parseClosure($value);
            } else {
                $whereStr .= $exp . ' (' . $value . ')';
            }
        } elseif (in_array($exp, ['< TIME', '> TIME', '<= TIME', '>= TIME'])) {
            $whereStr .= $key . ' ' . substr($exp, 0, 2) . ' ' . $this->parseDateTime($value, $field, $options, $bindName, $bindType);
        } elseif (in_array($exp, ['BETWEEN TIME', 'NOT BETWEEN TIME'])) {
            if (is_string($value)) {
                $value = explode(',', $value);
            }

            $whereStr .= $key . ' ' . substr($exp, 0, -4) . $this->parseDateTime($value[0], $field, $options, $bindName . '_between_1', $bindType) . ' AND ' . $this->parseDateTime($value[1], $field, $options, $bindName . '_between_2', $bindType);
        }
        return $whereStr;
    }

    // 执行闭包子查询
    protected function parseClosure($call, $show = true)
    {
        $query = new Query($this->connection);
        call_user_func_array($call, [ & $query]);
        return $query->buildSql($show);
    }

    /**
     * 日期时间条件解析
     * @access protected
     * @param string    $value
     * @param string    $key
     * @param array     $options
     * @param string    $bindName
     * @param integer   $bindType
     * @return string
     */
    protected function parseDateTime($value, $key, $options = [], $bindName = null, $bindType = null)
    {
        // 获取时间字段类型
        if (strpos($key, '.')) {
            list($table, $key) = explode('.', $key);
            if (isset($options['alias']) && $pos = array_search($table, $options['alias'])) {
                $table = $pos;
            }
        } else {
            $table = $options['table'];
        }
        $type = $this->query->getTableInfo($table, 'type');
        if (isset($type[$key])) {
            $info = $type[$key];
        }
        if (isset($info)) {
            if (is_string($value)) {
                $value = strtotime($value) ?: $value;
            }

            if (preg_match('/(datetime|timestamp)/is', $info)) {
                // 日期及时间戳类型
                $value = date('Y-m-d H:i:s', $value);
            } elseif (preg_match('/(date)/is', $info)) {
                // 日期及时间戳类型
                $value = date('Y-m-d', $value);
            }
        }
        $bindName = $bindName ?: $key;

        if ($this->query->isBind($bindName)) {
            $bindName .= '_' . str_replace('.', '_', uniqid('', true));
        }

        $this->query->bind($bindName, $value, $bindType);
        return ':' . $bindName;
    }

    /**
     * limit分析
     * @access protected
     * @param mixed $limit
     * @return string
     */
    protected function parseLimit($limit)
    {
        return (!empty($limit) && false === strpos($limit, '(')) ? ' LIMIT ' . $limit . ' ' : '';
    }

    /**
     * join分析
     * @access protected
     * @param array $join
     * @param array $options 查询条件
     * @return string
     */
    protected function parseJoin($join, & $options = [])
    {
        $joinStr = '';
        if (!empty($join)) {
            foreach ($join as $item) {
                list($table, $type, $on) = $item;
                if (is_array($table)) {
                    $origin = key($table);
                    if ($origin && $origin != $table[$origin]) {
                        $options['alias'][$origin] = $table[$origin];
                    }
                }
                $condition               = [];
                foreach ((array) $on as $val) {
                    if ($val instanceof Expression) {
                        $condition[] = $val->getValue();
                    } elseif (strpos($val, '=')) {
                        list($val1, $val2) = explode('=', $val, 2);
                        $condition[]       = $this->parseKey($val1, $options) . '=' . $this->parseKey($val2, $options);
                    } else {
                        $condition[] = $val;
                    }
                }

                $table = $this->parseTable($table, $options);
                $joinStr .= ' ' . $type . ' JOIN ' . $table . ' ON ' . implode(' AND ', $condition);
            }
        }
        return $joinStr;
    }

    /**
     * order分析
     * @access protected
     * @param mixed $order
     * @param array $options 查询条件
     * @return string
     */
    protected function parseOrder($order, $options = [])
    {
        if (empty($order)) {
            return '';
        }

        $array = [];
        foreach ($order as $key => $val) {
            if ($val instanceof Expression) {
                $array[] = $val->getValue();
            } elseif ('[rand]' == $val) {
                $array[] = $this->parseRand();
            } else {
                if (is_numeric($key)) {
                    list($key, $sort) = explode(' ', strpos($val, ' ') ? $val : $val . ' ');
                } else {
                    $sort = $val;
                }
                $sort    = strtoupper($sort);
                $sort    = in_array($sort, ['ASC', 'DESC'], true) ? ' ' . $sort : '';
                $array[] = $this->parseKey($key, $options, true) . $sort;
            }
        }
        $order = implode(',', $array);

        return !empty($order) ? ' ORDER BY ' . $order : '';
    }

    /**
     * group分析
     * @access protected
     * @param mixed $group
     * @return string
     */
    protected function parseGroup($group)
    {
        return !empty($group) ? ' GROUP BY ' . $this->parseKey($group) : '';
    }

    /**
     * having分析
     * @access protected
     * @param string $having
     * @return string
     */
    protected function parseHaving($having)
    {
        return !empty($having) ? ' HAVING ' . $having : '';
    }

    /**
     * comment分析
     * @access protected
     * @param string $comment
     * @return string
     */
    protected function parseComment($comment)
    {
        if (false !== strpos($comment, '*/')) {
            $comment = strstr($comment, '*/', true);
        }
        return !empty($comment) ? ' /* ' . $comment . ' */' : '';
    }

    /**
     * distinct分析
     * @access protected
     * @param mixed $distinct
     * @return string
     */
    protected function parseDistinct($distinct)
    {
        return !empty($distinct) ? ' DISTINCT ' : '';
    }

    /**
     * union分析
     * @access protected
     * @param mixed $union
     * @return string
     */
    protected function parseUnion($union)
    {
        if (empty($union)) {
            return '';
        }
        $type = $union['type'];
        unset($union['type']);
        foreach ($union as $u) {
            if ($u instanceof \Closure) {
                $sql[] = $type . ' ' . $this->parseClosure($u);
            } elseif (is_string($u)) {
                $sql[] = $type . ' ( ' . $this->parseSqlTable($u) . ' )';
            }
        }
        return ' ' . implode(' ', $sql);
    }

    /**
     * index分析,可在操作链中指定需要强制使用的索引
     * @access protected
     * @param mixed $index
     * @return string
     */
    protected function parseForce($index)
    {
        if (empty($index)) {
            return '';
        }

        return sprintf(" FORCE INDEX ( %s ) ", is_array($index) ? implode(',', $index) : $index);
    }

    /**
     * 设置锁机制
     * @access protected
     * @param bool|string $lock
     * @return string
     */
    protected function parseLock($lock = false)
    {
        if (is_bool($lock)) {
            return $lock ? ' FOR UPDATE ' : '';
        } elseif (is_string($lock)) {
            return ' ' . trim($lock) . ' ';
        }
    }

    /**
     * 生成查询SQL
     * @access public
     * @param array $options 表达式
     * @return string
     */
    public function select($options = [])
    {
        $sql = str_replace(
            ['%TABLE%', '%DISTINCT%', '%FIELD%', '%JOIN%', '%WHERE%', '%GROUP%', '%HAVING%', '%ORDER%', '%LIMIT%', '%UNION%', '%LOCK%', '%COMMENT%', '%FORCE%'],
            [
                $this->parseTable($options['table'], $options),
                $this->parseDistinct($options['distinct']),
                $this->parseField($options['field'], $options),
                $this->parseJoin($options['join'], $options),
                $this->parseWhere($options['where'], $options),
                $this->parseGroup($options['group']),
                $this->parseHaving($options['having']),
                $this->parseOrder($options['order'], $options),
                $this->parseLimit($options['limit']),
                $this->parseUnion($options['union']),
                $this->parseLock($options['lock']),
                $this->parseComment($options['comment']),
                $this->parseForce($options['force']),
            ], $this->selectSql);
        return $sql;
    }

    /**
     * 生成insert SQL
     * @access public
     * @param array     $data 数据
     * @param array     $options 表达式
     * @param bool      $replace 是否replace
     * @return string
     */
    public function insert(array $data, $options = [], $replace = false)
    {
        // 分析并处理数据
        $data = $this->parseData($data, $options);
        if (empty($data)) {
            return 0;
        }
        $fields = array_keys($data);
        $values = array_values($data);

        $sql = str_replace(
            ['%INSERT%', '%TABLE%', '%FIELD%', '%DATA%', '%COMMENT%'],
            [
                $replace ? 'REPLACE' : 'INSERT',
                $this->parseTable($options['table'], $options),
                implode(' , ', $fields),
                implode(' , ', $values),
                $this->parseComment($options['comment']),
            ], $this->insertSql);

        return $sql;
    }

    /**
     * 生成insertall SQL
     * @access public
     * @param array     $dataSet 数据集
     * @param array     $options 表达式
     * @param bool      $replace 是否replace
     * @return string
     * @throws Exception
     */
    public function insertAll($dataSet, $options = [], $replace = false)
    {
        // 获取合法的字段
        if ('*' == $options['field']) {
            $fields = array_keys($this->query->getFieldsType($options['table']));
        } else {
            $fields = $options['field'];
        }

        foreach ($dataSet as $data) {
            foreach ($data as $key => $val) {
                if (!in_array($key, $fields, true)) {
                    if ($options['strict']) {
                        throw new Exception('fields not exists:[' . $key . ']');
                    }
                    unset($data[$key]);
                } elseif (is_null($val)) {
                    $data[$key] = 'NULL';
                } elseif (is_scalar($val)) {
                    $data[$key] = $this->parseValue($val, $key);
                } elseif (is_object($val) && method_exists($val, '__toString')) {
                    // 对象数据写入
                    $data[$key] = $val->__toString();
                } else {
                    // 过滤掉非标量数据
                    unset($data[$key]);
                }
            }
            $value    = array_values($data);
            $values[] = 'SELECT ' . implode(',', $value);

            if (!isset($insertFields)) {
                $insertFields = array_keys($data);
            }
        }

        foreach ($insertFields as $field) {
            $fields[] = $this->parseKey($field, $options, true);
        }

        return str_replace(
            ['%INSERT%', '%TABLE%', '%FIELD%', '%DATA%', '%COMMENT%'],
            [
                $replace ? 'REPLACE' : 'INSERT',
                $this->parseTable($options['table'], $options),
                implode(' , ', $insertFields),
                implode(' UNION ALL ', $values),
                $this->parseComment($options['comment']),
            ], $this->insertAllSql);
    }

    /**
     * 生成select insert SQL
     * @access public
     * @param array     $fields 数据
     * @param string    $table 数据表
     * @param array     $options 表达式
     * @return string
     */
    public function selectInsert($fields, $table, $options)
    {
        if (is_string($fields)) {
            $fields = explode(',', $fields);
        }

        $fields = array_map([$this, 'parseKey'], $fields);
        $sql    = 'INSERT INTO ' . $this->parseTable($table, $options) . ' (' . implode(',', $fields) . ') ' . $this->select($options);
        return $sql;
    }

    /**
     * 生成update SQL
     * @access public
     * @param array     $data 数据
     * @param array     $options 表达式
     * @return string
     */
    public function update($data, $options)
    {
        $table = $this->parseTable($options['table'], $options);
        $data  = $this->parseData($data, $options);
        if (empty($data)) {
            return '';
        }
        foreach ($data as $key => $val) {
            $set[] = $key . '=' . $val;
        }

        $sql = str_replace(
            ['%TABLE%', '%SET%', '%JOIN%', '%WHERE%', '%ORDER%', '%LIMIT%', '%LOCK%', '%COMMENT%'],
            [
                $this->parseTable($options['table'], $options),
                implode(',', $set),
                $this->parseJoin($options['join'], $options),
                $this->parseWhere($options['where'], $options),
                $this->parseOrder($options['order'], $options),
                $this->parseLimit($options['limit']),
                $this->parseLock($options['lock']),
                $this->parseComment($options['comment']),
            ], $this->updateSql);

        return $sql;
    }

    /**
     * 生成delete SQL
     * @access public
     * @param array $options 表达式
     * @return string
     */
    public function delete($options)
    {
        $sql = str_replace(
            ['%TABLE%', '%USING%', '%JOIN%', '%WHERE%', '%ORDER%', '%LIMIT%', '%LOCK%', '%COMMENT%'],
            [
                $this->parseTable($options['table'], $options),
                !empty($options['using']) ? ' USING ' . $this->parseTable($options['using'], $options) . ' ' : '',
                $this->parseJoin($options['join'], $options),
                $this->parseWhere($options['where'], $options),
                $this->parseOrder($options['order'], $options),
                $this->parseLimit($options['limit']),
                $this->parseLock($options['lock']),
                $this->parseComment($options['comment']),
            ], $this->deleteSql);

        return $sql;
    }
}