| 1 | <?php |
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| 2 | /** |
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| 3 | * nestedTree class is based on excellent work of Kuzma Feskov |
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| 4 | * (http://php.russofile.ru/ru/authors/sql/nestedsets01/) |
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| 5 | * |
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| 6 | * One day we'll move nestedTree to Clearbricks. |
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| 7 | * |
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| 8 | * @package Dotclear |
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| 9 | * @subpackage Core |
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| 10 | * |
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| 11 | * @copyright Olivier Meunier & Association Dotclear |
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| 12 | * @copyright GPL-2.0-only |
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| 13 | * |
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| 14 | */ |
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| 15 | |
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| 16 | if (!defined('DC_RC_PATH')) {return;} |
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| 17 | |
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| 18 | class dcCategories extends nestedTree |
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| 19 | { |
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| 20 | protected $f_left = 'cat_lft'; |
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| 21 | protected $f_right = 'cat_rgt'; |
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| 22 | protected $f_id = 'cat_id'; |
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| 23 | |
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| 24 | protected $core; |
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| 25 | protected $blog_id; |
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| 26 | |
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| 27 | public function __construct($core) |
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| 28 | { |
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| 29 | $this->core = &$core; |
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| 30 | $this->con = &$core->con; |
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| 31 | $this->blog_id = $core->blog->id; |
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| 32 | $this->table = $core->prefix . 'category'; |
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| 33 | $this->add_condition = array('blog_id' => "'" . $this->con->escape($this->blog_id) . "'"); |
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| 34 | } |
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| 35 | |
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| 36 | public function getChildren($start = 0, $id = null, $sort = 'asc', $fields = array()) |
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| 37 | { |
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| 38 | $fields = array_merge(array('cat_title', 'cat_url', 'cat_desc'), $fields); |
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| 39 | return parent::getChildren($start, $id, $sort, $fields); |
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| 40 | } |
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| 41 | |
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| 42 | public function getParents($id, $fields = array()) |
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| 43 | { |
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| 44 | $fields = array_merge(array('cat_title', 'cat_url', 'cat_desc'), $fields); |
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| 45 | return parent::getParents($id, $fields); |
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| 46 | } |
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| 47 | |
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| 48 | public function getParent($id, $fields = array()) |
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| 49 | { |
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| 50 | $fields = array_merge(array('cat_title', 'cat_url', 'cat_desc'), $fields); |
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| 51 | return parent::getParent($id, $fields); |
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| 52 | } |
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| 53 | } |
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| 54 | |
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| 55 | abstract class nestedTree |
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| 56 | { |
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| 57 | protected $con; |
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| 58 | |
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| 59 | protected $table; |
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| 60 | protected $f_left; |
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| 61 | protected $f_right; |
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| 62 | protected $f_id; |
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| 63 | |
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| 64 | protected $add_condition = array(); |
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| 65 | |
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| 66 | protected $parents; |
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| 67 | |
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| 68 | public function __construct($con) |
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| 69 | { |
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| 70 | $this->con = &$con; |
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| 71 | } |
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| 72 | |
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| 73 | public function getChildren($start = 0, $id = null, $sort = 'asc', $fields = array()) |
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| 74 | { |
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| 75 | $fields = count($fields) > 0 ? ', C2.' . implode(', C2.', $fields) : ''; |
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| 76 | |
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| 77 | $sql = 'SELECT C2.' . $this->f_id . ', C2.' . $this->f_left . ', C2.' . $this->f_right . ', COUNT(C1.' . $this->f_id . ') AS level ' |
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| 78 | . $fields . ' ' |
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| 79 | . 'FROM ' . $this->table . ' AS C1, ' . $this->table . ' AS C2 %s ' |
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| 80 | . 'WHERE C2.' . $this->f_left . ' BETWEEN C1.' . $this->f_left . ' AND C1.' . $this->f_right . ' ' |
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| 81 | . ' %s ' |
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| 82 | . $this->getCondition('AND', 'C2.') |
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| 83 | . $this->getCondition('AND', 'C1.') |
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| 84 | . 'GROUP BY C2.' . $this->f_id . ', C2.' . $this->f_left . ', C2.' . $this->f_right . ' ' . $fields . ' ' |
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| 85 | . ' %s ' |
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| 86 | . 'ORDER BY C2.' . $this->f_left . ' ' . ($sort == 'asc' ? 'ASC' : 'DESC') . ' '; |
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| 87 | |
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| 88 | $from = $where = ''; |
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| 89 | if ($start > 0) { |
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| 90 | $from = ', ' . $this->table . ' AS C3'; |
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| 91 | $where = 'AND C3.' . $this->f_id . ' = ' . (integer) $start . ' AND C1.' . $this->f_left . ' >= C3.' . $this->f_left . ' AND C1.' . $this->f_right . ' <= C3.' . $this->f_right; |
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| 92 | $where .= $this->getCondition('AND', 'C3.'); |
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| 93 | } |
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| 94 | |
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| 95 | $having = ''; |
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| 96 | if ($id !== null) { |
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| 97 | $having = ' HAVING C2.' . $this->f_id . ' = ' . (integer) $id; |
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| 98 | } |
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| 99 | |
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| 100 | $sql = sprintf($sql, $from, $where, $having); |
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| 101 | |
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| 102 | return $this->con->select($sql); |
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| 103 | } |
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| 104 | |
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| 105 | public function getParents($id, $fields = array()) |
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| 106 | { |
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| 107 | $fields = count($fields) > 0 ? ', C1.' . implode(', C1.', $fields) : ''; |
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| 108 | |
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| 109 | return $this->con->select( |
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| 110 | 'SELECT C1.' . $this->f_id . ' ' . $fields . ' ' |
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| 111 | . 'FROM ' . $this->table . ' C1, ' . $this->table . ' C2 ' |
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| 112 | . 'WHERE C2.' . $this->f_id . ' = ' . (integer) $id . ' ' |
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| 113 | . 'AND C1.' . $this->f_left . ' < C2.' . $this->f_left . ' ' |
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| 114 | . 'AND C1.' . $this->f_right . ' > C2.' . $this->f_right . ' ' |
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| 115 | . $this->getCondition('AND', 'C2.') |
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| 116 | . $this->getCondition('AND', 'C1.') |
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| 117 | . 'ORDER BY C1.' . $this->f_left . ' ASC ' |
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| 118 | ); |
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| 119 | } |
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| 120 | |
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| 121 | public function getParent($id, $fields = array()) |
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| 122 | { |
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| 123 | $fields = count($fields) > 0 ? ', C1.' . implode(', C1.', $fields) : ''; |
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| 124 | |
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| 125 | return $this->con->select( |
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| 126 | 'SELECT C1.' . $this->f_id . ' ' . $fields . ' ' |
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| 127 | . 'FROM ' . $this->table . ' C1, ' . $this->table . ' C2 ' |
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| 128 | . 'WHERE C2.' . $this->f_id . ' = ' . (integer) $id . ' ' |
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| 129 | . 'AND C1.' . $this->f_left . ' < C2.' . $this->f_left . ' ' |
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| 130 | . 'AND C1.' . $this->f_right . ' > C2.' . $this->f_right . ' ' |
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| 131 | . $this->getCondition('AND', 'C2.') |
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| 132 | . $this->getCondition('AND', 'C1.') |
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| 133 | . 'ORDER BY C1.' . $this->f_left . ' DESC ' |
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| 134 | . $this->con->limit(1) |
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| 135 | ); |
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| 136 | } |
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| 137 | |
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| 138 | /* ------------------------------------------------ |
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| 139 | * Tree manipulations |
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| 140 | * ---------------------------------------------- */ |
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| 141 | public function addNode($data, $target = 0) |
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| 142 | { |
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| 143 | if (!is_array($data) && !($data instanceof cursor)) { |
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| 144 | throw new Exception('Invalid data block'); |
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| 145 | } |
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| 146 | |
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| 147 | if (is_array($data)) { |
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| 148 | $D = $data; |
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| 149 | $data = $this->con->openCursor($this->table); |
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| 150 | foreach ($D as $k => $v) { |
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| 151 | $data->{$k} = $v; |
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| 152 | } |
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| 153 | unset($D); |
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| 154 | } |
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| 155 | |
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| 156 | # We want to put it at the end |
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| 157 | $this->con->writeLock($this->table); |
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| 158 | try |
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| 159 | { |
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| 160 | $rs = $this->con->select('SELECT MAX(' . $this->f_id . ') as n_id FROM ' . $this->table); |
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| 161 | $id = $rs->n_id; |
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| 162 | |
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| 163 | $rs = $this->con->select( |
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| 164 | 'SELECT MAX(' . $this->f_right . ') as n_r ' . |
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| 165 | 'FROM ' . $this->table . |
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| 166 | $this->getCondition('WHERE') |
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| 167 | ); |
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| 168 | $last = $rs->n_r == 0 ? 1 : $rs->n_r; |
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| 169 | |
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| 170 | $data->{$this->f_id} = $id + 1; |
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| 171 | $data->{$this->f_left} = $last + 1; |
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| 172 | $data->{$this->f_right} = $last + 2; |
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| 173 | |
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| 174 | $data->insert(); |
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| 175 | $this->con->unlock(); |
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| 176 | try { |
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| 177 | $this->setNodeParent($id + 1, $target); |
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| 178 | return $data->{$this->f_id}; |
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| 179 | } catch (Exception $e) {} # We don't mind error in this case |
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| 180 | } catch (Exception $e) { |
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| 181 | $this->con->unlock(); |
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| 182 | throw $e; |
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| 183 | } |
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| 184 | } |
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| 185 | |
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| 186 | public function updatePosition($id, $left, $right) |
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| 187 | { |
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| 188 | $node_left = (integer) $left; |
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| 189 | $node_right = (integer) $right; |
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| 190 | $node_id = (integer) $id; |
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| 191 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 192 | . $this->f_left . ' = ' . $node_left . ', ' |
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| 193 | . $this->f_right . ' = ' . $node_right |
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| 194 | . ' WHERE ' . $this->f_id . ' = ' . $node_id |
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| 195 | . $this->getCondition(); |
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| 196 | |
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| 197 | $this->con->begin(); |
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| 198 | try { |
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| 199 | $this->con->execute($sql); |
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| 200 | $this->con->commit(); |
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| 201 | } catch (Exception $e) { |
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| 202 | $this->con->rollback(); |
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| 203 | throw $e; |
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| 204 | } |
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| 205 | } |
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| 206 | |
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| 207 | public function deleteNode($node, $keep_children = true) |
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| 208 | { |
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| 209 | $node = (integer) $node; |
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| 210 | |
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| 211 | $rs = $this->getChildren(0, $node); |
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| 212 | if ($rs->isEmpty()) { |
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| 213 | throw new Exception('Node does not exist.'); |
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| 214 | } |
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| 215 | $node_left = (integer) $rs->{$this->f_left}; |
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| 216 | $node_right = (integer) $rs->{$this->f_right}; |
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| 217 | |
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| 218 | try |
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| 219 | { |
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| 220 | $this->con->begin(); |
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| 221 | |
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| 222 | if ($keep_children) { |
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| 223 | $this->con->execute('DELETE FROM ' . $this->table . ' WHERE ' . $this->f_id . ' = ' . $node); |
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| 224 | |
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| 225 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 226 | . $this->f_right . ' = CASE ' |
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| 227 | . 'WHEN ' . $this->f_right . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 228 | . 'THEN ' . $this->f_right . ' - 1 ' |
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| 229 | . 'WHEN ' . $this->f_right . ' > ' . $node_right . ' ' |
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| 230 | . 'THEN ' . $this->f_right . ' - 2 ' |
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| 231 | . 'ELSE ' . $this->f_right . ' ' |
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| 232 | . 'END, ' |
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| 233 | . $this->f_left . ' = CASE ' |
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| 234 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 235 | . 'THEN ' . $this->f_left . ' - 1 ' |
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| 236 | . 'WHEN ' . $this->f_left . ' > ' . $node_right . ' ' |
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| 237 | . 'THEN ' . $this->f_left . ' - 2 ' |
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| 238 | . 'ELSE ' . $this->f_left . ' ' |
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| 239 | . 'END ' |
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| 240 | . 'WHERE ' . $this->f_right . ' > ' . $node_left |
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| 241 | . $this->getCondition(); |
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| 242 | |
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| 243 | $this->con->execute($sql); |
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| 244 | } else { |
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| 245 | $this->con->execute('DELETE FROM ' . $this->table . ' WHERE ' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $node_right); |
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| 246 | |
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| 247 | $node_delta = $node_right - $node_left + 1; |
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| 248 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 249 | . $this->f_left . ' = CASE ' |
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| 250 | . 'WHEN ' . $this->f_left . ' > ' . $node_left . ' ' |
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| 251 | . 'THEN ' . $this->f_left . ' - (' . $node_delta . ') ' |
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| 252 | . 'ELSE ' . $this->f_left . ' ' |
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| 253 | . 'END, ' |
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| 254 | . $this->f_right . ' = CASE ' |
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| 255 | . 'WHEN ' . $this->f_right . ' > ' . $node_left . ' ' |
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| 256 | . 'THEN ' . $this->f_right . ' - (' . $node_delta . ') ' |
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| 257 | . 'ELSE ' . $this->f_right . ' ' |
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| 258 | . 'END ' |
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| 259 | . 'WHERE ' . $this->f_right . ' > ' . $node_right |
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| 260 | . $this->getCondition(); |
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| 261 | } |
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| 262 | |
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| 263 | $this->con->commit(); |
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| 264 | } catch (Exception $e) { |
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| 265 | $this->con->rollback(); |
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| 266 | throw $e; |
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| 267 | } |
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| 268 | } |
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| 269 | |
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| 270 | public function resetOrder() |
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| 271 | { |
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| 272 | $rs = $this->con->select( |
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| 273 | 'SELECT ' . $this->f_id . ' ' |
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| 274 | . 'FROM ' . $this->table . ' ' |
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| 275 | . $this->getCondition('WHERE') |
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| 276 | . 'ORDER BY ' . $this->f_left . ' ASC ' |
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| 277 | ); |
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| 278 | |
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| 279 | $lft = 2; |
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| 280 | $this->con->begin(); |
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| 281 | try |
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| 282 | { |
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| 283 | while ($rs->fetch()) { |
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| 284 | $this->con->execute( |
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| 285 | 'UPDATE ' . $this->table . ' SET ' |
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| 286 | . $this->f_left . ' = ' . ($lft++) . ', ' |
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| 287 | . $this->f_right . ' = ' . ($lft++) . ' ' |
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| 288 | . 'WHERE ' . $this->f_id . ' = ' . (integer) $rs->{$this->f_id} . ' ' |
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| 289 | . $this->getCondition() |
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| 290 | ); |
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| 291 | } |
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| 292 | $this->con->commit(); |
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| 293 | } catch (Exception $e) { |
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| 294 | $this->con->rollback(); |
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| 295 | throw $e; |
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| 296 | } |
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| 297 | } |
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| 298 | |
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| 299 | public function setNodeParent($node, $target = 0) |
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| 300 | { |
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| 301 | if ($node == $target) { |
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| 302 | return; |
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| 303 | } |
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| 304 | $node = (integer) $node; |
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| 305 | $target = (integer) $target; |
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| 306 | |
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| 307 | $rs = $this->getChildren(0, $node); |
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| 308 | if ($rs->isEmpty()) { |
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| 309 | throw new Exception('Node does not exist.'); |
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| 310 | } |
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| 311 | $node_left = (integer) $rs->{$this->f_left}; |
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| 312 | $node_right = (integer) $rs->{$this->f_right}; |
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| 313 | $node_level = (integer) $rs->level; |
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| 314 | |
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| 315 | if ($target > 0) { |
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| 316 | $rs = $this->getChildren(0, $target); |
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| 317 | } else { |
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| 318 | $rs = $this->con->select( |
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| 319 | 'SELECT MIN(' . $this->f_left . ')-1 AS ' . $this->f_left . ', MAX(' . $this->f_right . ')+1 AS ' . $this->f_right . ', 0 AS level ' . |
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| 320 | 'FROM ' . $this->table . ' ' . |
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| 321 | $this->getCondition('WHERE') |
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| 322 | ); |
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| 323 | } |
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| 324 | $target_left = (integer) $rs->{$this->f_left}; |
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| 325 | $target_right = (integer) $rs->{$this->f_right}; |
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| 326 | $target_level = (integer) $rs->level; |
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| 327 | |
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| 328 | if ($node_left == $target_left |
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| 329 | || ($target_left >= $node_left && $target_left <= $node_right) |
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| 330 | || ($node_level == $target_level + 1 && $node_left > $target_left && $node_right < $target_right) |
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| 331 | ) { |
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| 332 | throw new Exception('Cannot move tree'); |
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| 333 | } |
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| 334 | |
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| 335 | if ($target_left < $node_left && $target_right > $node_right && $target_level < $node_level - 1) { |
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| 336 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 337 | . $this->f_right . ' = CASE ' |
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| 338 | . 'WHEN ' . $this->f_right . ' BETWEEN ' . ($node_right + 1) . ' AND ' . ($target_right - 1) . ' ' |
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| 339 | . 'THEN ' . $this->f_right . '-(' . ($node_right - $node_left + 1) . ') ' |
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| 340 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 341 | . 'THEN ' . $this->f_right . '+' . ((($target_right - $node_right - $node_level + $target_level) / 2) * 2 + $node_level - $target_level - 1) . ' ' |
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| 342 | . 'ELSE ' |
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| 343 | . $this->f_right . ' ' |
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| 344 | . 'END, ' |
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| 345 | . $this->f_left . ' = CASE ' |
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| 346 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($node_right + 1) . ' AND ' . ($target_right - 1) . ' ' |
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| 347 | . 'THEN ' . $this->f_left . '-(' . ($node_right - $node_left + 1) . ') ' |
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| 348 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 349 | . 'THEN ' . $this->f_left . '+' . ((($target_right - $node_right - $node_level + $target_level) / 2) * 2 + $node_level - $target_level - 1) . ' ' |
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| 350 | . 'ELSE ' . $this->f_left . ' ' |
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| 351 | . 'END ' |
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| 352 | . 'WHERE ' . $this->f_left . ' BETWEEN ' . ($target_left + 1) . ' AND ' . ($target_right - 1) . ''; |
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| 353 | } elseif ($target_left < $node_left) { |
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| 354 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 355 | . $this->f_left . ' = CASE ' |
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| 356 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $target_right . ' AND ' . ($node_left - 1) . ' ' |
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| 357 | . 'THEN ' . $this->f_left . '+' . ($node_right - $node_left + 1) . ' ' |
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| 358 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 359 | . 'THEN ' . $this->f_left . '-(' . ($node_left - $target_right) . ') ' |
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| 360 | . 'ELSE ' . $this->f_left . ' ' |
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| 361 | . 'END, ' |
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| 362 | . $this->f_right . ' = CASE ' |
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| 363 | . 'WHEN ' . $this->f_right . ' BETWEEN ' . $target_right . ' AND ' . $node_left . ' ' |
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| 364 | . 'THEN ' . $this->f_right . '+' . ($node_right - $node_left + 1) . ' ' |
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| 365 | . 'WHEN ' . $this->f_right . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 366 | . 'THEN ' . $this->f_right . '-(' . ($node_left - $target_right) . ') ' |
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| 367 | . 'ELSE ' . $this->f_right . ' ' |
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| 368 | . 'END ' |
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| 369 | . 'WHERE (' . $this->f_left . ' BETWEEN ' . $target_left . ' AND ' . $node_right . ' ' |
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| 370 | . 'OR ' . $this->f_right . ' BETWEEN ' . $target_left . ' AND ' . $node_right . ')'; |
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| 371 | } else { |
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| 372 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 373 | . $this->f_left . ' = CASE ' |
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| 374 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $node_right . ' AND ' . $target_right . ' ' |
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| 375 | . 'THEN ' . $this->f_left . '-' . ($node_right - $node_left + 1) . ' ' |
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| 376 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 377 | . 'THEN ' . $this->f_left . '+' . ($target_right - 1 - $node_right) . ' ' |
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| 378 | . 'ELSE ' . $this->f_left . ' ' |
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| 379 | . 'END, ' |
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| 380 | . $this->f_right . ' = CASE ' |
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| 381 | . 'WHEN ' . $this->f_right . ' BETWEEN ' . ($node_right + 1) . ' AND ' . ($target_right - 1) . ' ' |
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| 382 | . 'THEN ' . $this->f_right . '-' . ($node_right - $node_left + 1) . ' ' |
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| 383 | . 'WHEN ' . $this->f_right . ' BETWEEN ' . $node_left . ' AND ' . $node_right . ' ' |
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| 384 | . 'THEN ' . $this->f_right . '+' . ($target_right - 1 - $node_right) . ' ' |
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| 385 | . 'ELSE ' . $this->f_right . ' ' |
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| 386 | . 'END ' |
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| 387 | . 'WHERE (' . $this->f_left . ' BETWEEN ' . $node_left . ' AND ' . $target_right . ' ' |
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| 388 | . 'OR ' . $this->f_right . ' BETWEEN ' . $node_left . ' AND ' . $target_right . ')'; |
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| 389 | } |
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| 390 | |
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| 391 | $sql .= ' ' . $this->getCondition(); |
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| 392 | |
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| 393 | $this->con->execute($sql); |
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| 394 | } |
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| 395 | |
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| 396 | public function setNodePosition($nodeA, $nodeB, $position = 'after') |
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| 397 | { |
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| 398 | $nodeA = (integer) $nodeA; |
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| 399 | $nodeB = (integer) $nodeB; |
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| 400 | |
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| 401 | $rs = $this->getChildren(0, $nodeA); |
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| 402 | if ($rs->isEmpty()) { |
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| 403 | throw new Exception('Node does not exist.'); |
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| 404 | } |
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| 405 | $A_left = $rs->{$this->f_left}; |
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| 406 | $A_right = $rs->{$this->f_right}; |
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| 407 | $A_level = $rs->level; |
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| 408 | |
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| 409 | $rs = $this->getChildren(0, $nodeB); |
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| 410 | if ($rs->isEmpty()) { |
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| 411 | throw new Exception('Node does not exist.'); |
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| 412 | } |
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| 413 | $B_left = $rs->{$this->f_left}; |
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| 414 | $B_right = $rs->{$this->f_right}; |
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| 415 | $B_level = $rs->level; |
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| 416 | |
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| 417 | if ($A_level != $B_level) { |
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| 418 | throw new Exception('Cannot change position'); |
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| 419 | } |
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| 420 | |
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| 421 | $rs = $this->getParents($nodeA); |
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| 422 | $parentA = $rs->isEmpty() ? 0 : $rs->{$this->f_id}; |
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| 423 | $rs = $this->getParents($nodeB); |
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| 424 | $parentB = $rs->isEmpty() ? 0 : $rs->{$this->f_id}; |
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| 425 | |
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| 426 | if ($parentA != $parentB) { |
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| 427 | throw new Exception('Cannot change position'); |
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| 428 | } |
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| 429 | |
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| 430 | if ($position == 'before') { |
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| 431 | if ($A_left > $B_left) { |
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| 432 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 433 | . $this->f_right . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_right . ' - (' . ($A_left - $B_left) . ') ' |
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| 434 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $B_left . ' AND ' . ($A_left - 1) . ' THEN ' . $this->f_right . ' + ' . ($A_right - $A_left + 1) . ' ELSE ' . $this->f_right . ' END, ' |
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| 435 | . $this->f_left . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_left . ' - (' . ($A_left - $B_left) . ') ' |
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| 436 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . $B_left . ' AND ' . ($A_left - 1) . ' THEN ' . $this->f_left . ' + ' . ($A_right - $A_left + 1) . ' ELSE ' . $this->f_left . ' END ' |
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| 437 | . 'WHERE ' . $this->f_left . ' BETWEEN ' . $B_left . ' AND ' . $A_right; |
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| 438 | } else { |
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| 439 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 440 | . $this->f_right . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_right . ' + ' . (($B_left - $A_left) - ($A_right - $A_left + 1)) . ' ' |
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| 441 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($A_right + 1) . ' AND ' . ($B_left - 1) . ' THEN ' . $this->f_right . ' - (' . (($A_right - $A_left + 1)) . ') ELSE ' . $this->f_right . ' END, ' |
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| 442 | . $this->f_left . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_left . ' + ' . (($B_left - $A_left) - ($A_right - $A_left + 1)) . ' ' |
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| 443 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($A_right + 1) . ' AND ' . ($B_left - 1) . ' THEN ' . $this->f_left . ' - (' . ($A_right - $A_left + 1) . ') ELSE ' . $this->f_left . ' END ' |
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| 444 | . 'WHERE ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . ($B_left - 1); |
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| 445 | } |
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| 446 | } else { |
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| 447 | if ($A_left > $B_left) { |
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| 448 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 449 | . $this->f_right . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_right . ' - (' . ($A_left - $B_left - ($B_right - $B_left + 1)) . ') ' |
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| 450 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($B_right + 1) . ' AND ' . ($A_left - 1) . ' THEN ' . $this->f_right . ' + ' . ($A_right - $A_left + 1) . ' ELSE ' . $this->f_right . ' END, ' |
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| 451 | . $this->f_left . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_left . ' - (' . ($A_left - $B_left - ($B_right - $B_left + 1)) . ') ' |
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| 452 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($B_right + 1) . ' AND ' . ($A_left - 1) . ' THEN ' . $this->f_left . ' + ' . ($A_right - $A_left + 1) . ' ELSE ' . $this->f_left . ' END ' |
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| 453 | . 'WHERE ' . $this->f_left . ' BETWEEN ' . ($B_right + 1) . ' AND ' . $A_right; |
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| 454 | } else { |
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| 455 | $sql = 'UPDATE ' . $this->table . ' SET ' |
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| 456 | . $this->f_right . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_right . ' + ' . ($B_right - $A_right) . ' ' |
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| 457 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($A_right + 1) . ' AND ' . $B_right . ' THEN ' . $this->f_right . ' - (' . (($A_right - $A_left + 1)) . ') ELSE ' . $this->f_right . ' END, ' |
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| 458 | . $this->f_left . ' = CASE WHEN ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $A_right . ' THEN ' . $this->f_left . ' + ' . ($B_right - $A_right) . ' ' |
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| 459 | . 'WHEN ' . $this->f_left . ' BETWEEN ' . ($A_right + 1) . ' AND ' . $B_right . ' THEN ' . $this->f_left . ' - (' . ($A_right - $A_left + 1) . ') ELSE ' . $this->f_left . ' END ' |
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| 460 | . 'WHERE ' . $this->f_left . ' BETWEEN ' . $A_left . ' AND ' . $B_right; |
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| 461 | } |
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| 462 | } |
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| 463 | |
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| 464 | $sql .= $this->getCondition(); |
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| 465 | $this->con->execute($sql); |
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| 466 | } |
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| 467 | |
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| 468 | protected function getCondition($start = 'AND', $prefix = '') |
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| 469 | { |
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| 470 | if (empty($this->add_condition)) { |
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| 471 | return ''; |
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| 472 | } |
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| 473 | |
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| 474 | $w = array(); |
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| 475 | foreach ($this->add_condition as $c => $n) { |
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| 476 | $w[] = $prefix . $c . ' = ' . $n; |
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| 477 | } |
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| 478 | return ' ' . $start . ' ' . implode(' AND ', $w) . ' '; |
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| 479 | } |
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| 480 | } |
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