sweetrdf /
in-memory-store-sqlite
| Total Complexity | 537 |
| Total Lines | 1993 |
| Duplicated Lines | 0 % |
| Coverage | 77.48% |
| Changes | 2 | ||
| Bugs | 0 | Features | 0 |
Complex classes like SelectQueryHandler often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use SelectQueryHandler, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 19 | class SelectQueryHandler extends QueryHandler |
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| 20 | { |
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| 21 | private int $cache_results; |
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introduced
by
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| 22 | |||
| 23 | /** |
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| 24 | * @var array<mixed> |
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| 25 | */ |
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| 26 | private array $dependency_log; |
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| 27 | |||
| 28 | private string $engine_type; |
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| 29 | |||
| 30 | /** |
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| 31 | * @var array<miyed> |
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| 32 | */ |
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| 33 | private array $index; |
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| 34 | |||
| 35 | /** |
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| 36 | * @var array<miyed> |
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| 37 | */ |
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| 38 | private array $indexes; |
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| 39 | |||
| 40 | /** |
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| 41 | * @var array<miyed> |
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| 42 | */ |
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| 43 | private array $initial_index; |
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| 44 | |||
| 45 | private int $is_union_query; |
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| 46 | |||
| 47 | /** |
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| 48 | * @var array<miyed> |
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| 49 | */ |
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| 50 | protected array $infos; |
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| 51 | |||
| 52 | private $opt_sql; |
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| 53 | |||
| 54 | private int $opt_sql_pd_count; |
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| 55 | |||
| 56 | private int $pattern_order_offset; |
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| 57 | |||
| 58 | 92 | public function runQuery($infos) |
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| 59 | { |
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| 60 | 92 | $this->infos = $infos; |
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| 61 | 92 | $this->infos['null_vars'] = []; |
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| 62 | 92 | $this->indexes = []; |
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| 63 | 92 | $this->pattern_order_offset = 0; |
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| 64 | 92 | $q_sql = $this->getSQL(); |
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| 65 | |||
| 66 | /* create intermediate results (ID-based) */ |
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| 67 | 92 | $tmp_tbl = $this->createTempTable($q_sql); |
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| 68 | |||
| 69 | /* join values */ |
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| 70 | 92 | $r = $this->getFinalQueryResult($q_sql, $tmp_tbl); |
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| 71 | |||
| 72 | /* remove intermediate results */ |
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| 73 | 92 | $this->store->getDBObject()->exec('DROP TABLE IF EXISTS '.$tmp_tbl); |
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| 74 | |||
| 75 | 92 | return $r; |
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| 76 | } |
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| 77 | |||
| 78 | 92 | private function getSQL() |
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| 79 | { |
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| 80 | 92 | $r = ''; |
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| 81 | 92 | $nl = "\n"; |
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| 82 | 92 | $this->buildInitialIndexes(); |
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| 83 | 92 | foreach ($this->indexes as $i => $index) { |
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| 84 | 92 | $this->index = array_merge($this->getEmptyIndex(), $index); |
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| 85 | 92 | $this->analyzeIndex($this->getPattern('0')); |
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| 86 | 92 | $sub_r = $this->getQuerySQL(); |
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| 87 | 92 | $r .= $r ? $nl.'UNION'.$this->getDistinctSQL().$nl : ''; |
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| 88 | |||
| 89 | 92 | $setBracket = $this->is_union_query && !$this->store->getDBObject() instanceof PDOSQLiteAdapter; |
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| 90 | 92 | $r .= $setBracket ? '('.$sub_r.')' : $sub_r; |
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| 91 | |||
| 92 | 92 | $this->indexes[$i] = $this->index; |
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| 93 | } |
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| 94 | 92 | $r .= $this->is_union_query ? $this->getLIMITSQL() : ''; |
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| 95 | 92 | $orderInfos = $this->infos['query']['order_infos'] ?? 0; |
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| 96 | 92 | if ($orderInfos) { |
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| 97 | 4 | $r = preg_replace('/SELECT(\s+DISTINCT)?\s*/', 'SELECT\\1 NULL AS `TMPPOS`, ', $r); |
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| 98 | } |
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| 99 | 92 | $pd_count = $this->problematicDependencies(); |
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| 100 | 92 | if ($pd_count) { |
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| 101 | /* re-arranging the patterns sometimes reduces the LEFT JOIN dependencies */ |
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| 102 | $set_sql = 0; |
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| 103 | if (!$this->pattern_order_offset) { |
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| 104 | $set_sql = 1; |
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| 105 | } |
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| 106 | if (!$set_sql && ($pd_count < $this->opt_sql_pd_count)) { |
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| 107 | $set_sql = 1; |
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| 108 | } |
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| 109 | if (!$set_sql && ($pd_count == $this->opt_sql_pd_count) && (\strlen($r) < \strlen($this->opt_sql))) { |
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| 110 | $set_sql = 1; |
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| 111 | } |
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| 112 | if ($set_sql) { |
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| 113 | $this->opt_sql = $r; |
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| 114 | $this->opt_sql_pd_count = $pd_count; |
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| 115 | } |
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| 116 | ++$this->pattern_order_offset; |
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| 117 | if ($this->pattern_order_offset > 5) { |
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| 118 | return $this->opt_sql; |
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| 119 | } |
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| 120 | |||
| 121 | return $this->getSQL(); |
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| 122 | } |
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| 123 | |||
| 124 | 92 | return $r; |
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| 125 | } |
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| 126 | |||
| 127 | 92 | private function buildInitialIndexes() |
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| 128 | { |
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| 129 | 92 | $this->dependency_log = []; |
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| 130 | 92 | $this->index = $this->getEmptyIndex(); |
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| 131 | // if no pattern is in the query, the index "pattern" is undefined, which leads to an error. |
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| 132 | // TODO throw an exception/raise an error and avoid "Undefined index: pattern" notification |
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| 133 | 92 | $this->buildIndex($this->infos['query']['pattern'], 0); |
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| 134 | 92 | $tmp = $this->index; |
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| 135 | 92 | $this->analyzeIndex($this->getPattern('0')); |
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| 136 | 92 | $this->initial_index = $this->index; |
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| 137 | 92 | $this->index = $tmp; |
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| 138 | 92 | $this->is_union_query = $this->index['union_branches'] ? 1 : 0; |
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| 139 | 92 | $this->indexes = $this->is_union_query ? $this->getUnionIndexes($this->index) : [$this->index]; |
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| 140 | } |
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| 141 | |||
| 142 | 92 | private function createTempTable($q_sql) |
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| 143 | { |
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| 144 | 92 | $tbl = 'Q'.md5($q_sql.time().uniqid(rand())); |
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| 145 | 92 | if (\strlen($tbl) > 64) { |
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| 146 | $tbl = 'Q'.md5($tbl); |
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| 147 | } |
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| 148 | |||
| 149 | 92 | $tmp_sql = 'CREATE TABLE '.$tbl.' ( '.$this->getTempTableDefForSQLite($q_sql).')'; |
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| 150 | 92 | $tmpSql2 = str_replace('CREATE TEMPORARY', 'CREATE', $tmp_sql); |
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| 151 | |||
| 152 | if ( |
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| 153 | 92 | !$this->store->getDBObject()->simpleQuery($tmp_sql) |
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| 154 | 92 | && !$this->store->getDBObject()->simpleQuery($tmpSql2) |
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| 155 | 92 | && !empty($this->store->getDBObject()->getErrorMessage()) |
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| 156 | ) { |
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| 157 | return $this->logger->error( |
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| 158 | $this->store->getDBObject()->getErrorMessage() |
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| 159 | ); |
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| 160 | } |
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| 161 | 92 | if (false === $this->store->getDBObject()->exec('INSERT INTO '.$tbl.' '."\n".$q_sql)) { |
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| 162 | $this->logger->error($this->store->getDBObject()->getErrorMessage()); |
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| 163 | } |
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| 164 | |||
| 165 | 92 | return $tbl; |
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| 166 | } |
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| 167 | |||
| 168 | 92 | private function getEmptyIndex() |
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| 169 | { |
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| 170 | 92 | return [ |
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| 171 | 92 | 'from' => [], |
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| 172 | 92 | 'join' => [], |
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| 173 | 92 | 'left_join' => [], |
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| 174 | 92 | 'vars' => [], 'graph_vars' => [], 'graph_uris' => [], |
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| 175 | 92 | 'bnodes' => [], |
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| 176 | 92 | 'triple_patterns' => [], |
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| 177 | 92 | 'sub_joins' => [], |
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| 178 | 92 | 'constraints' => [], |
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| 179 | 92 | 'union_branches' => [], |
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| 180 | 92 | 'patterns' => [], |
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| 181 | 92 | 'havings' => [], |
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| 182 | 92 | ]; |
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| 183 | } |
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| 184 | |||
| 185 | 92 | private function getTempTableDefForSQLite($q_sql) |
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| 186 | { |
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| 187 | 92 | $col_part = preg_replace('/^SELECT\s*(DISTINCT)?(.*)FROM.*$/s', '\\2', $q_sql); |
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| 188 | 92 | $parts = explode(',', $col_part); |
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| 189 | 92 | $has_order_infos = $this->infos['query']['order_infos'] ?? 0; |
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| 190 | 92 | $r = ''; |
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| 191 | 92 | $added = []; |
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| 192 | 92 | foreach ($parts as $part) { |
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| 193 | 92 | if (preg_match('/\.?(.+)\s+AS\s+`(.+)`/U', trim($part), $m) && !isset($added[$m[2]])) { |
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| 194 | 92 | $alias = $m[2]; |
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| 195 | 92 | if ('TMPPOS' == $alias) { |
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| 196 | 4 | continue; |
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| 197 | } |
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| 198 | 92 | $r .= $r ? ',' : ''; |
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| 199 | 92 | $r .= "\n `".$alias.'` INTEGER UNSIGNED'; |
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| 200 | 92 | $added[$alias] = 1; |
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| 201 | } |
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| 202 | } |
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| 203 | 92 | if ($has_order_infos) { |
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| 204 | 4 | $r = "\n".'`TMPPOS` INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, '.$r; |
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| 205 | } |
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| 206 | |||
| 207 | 92 | return $r ? $r."\n" : ''; |
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| 208 | } |
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| 209 | |||
| 210 | /** |
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| 211 | * It is protected because AskQueryHandler needs and overrides this function. |
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| 212 | */ |
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| 213 | 89 | protected function getFinalQueryResult($q_sql, $tmp_tbl) |
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| 214 | { |
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| 215 | /* var names */ |
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| 216 | 89 | $vars = []; |
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| 217 | 89 | $aggregate_vars = []; |
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| 218 | 89 | foreach ($this->infos['query']['result_vars'] as $entry) { |
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| 219 | 89 | if ($entry['aggregate']) { |
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| 220 | 15 | $vars[] = $entry['alias']; |
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| 221 | 15 | $aggregate_vars[] = $entry['alias']; |
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| 222 | } else { |
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| 223 | 80 | $vars[] = $entry['var']; |
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| 224 | } |
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| 225 | } |
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| 226 | /* result */ |
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| 227 | 89 | $r = ['variables' => $vars]; |
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| 228 | 89 | $v_sql = $this->getValueSQL($tmp_tbl, $q_sql); |
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| 229 | |||
| 230 | 89 | $entries = []; |
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| 231 | try { |
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| 232 | 89 | $entries = $this->store->getDBObject()->fetchList($v_sql); |
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| 233 | 1 | } catch (\Exception $e) { |
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| 234 | 1 | $this->logger->error($e->getMessage()); |
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| 235 | } |
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| 236 | |||
| 237 | 89 | $rows = []; |
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| 238 | 89 | $types = [0 => 'uri', 1 => 'bnode', 2 => 'literal']; |
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| 239 | 89 | if (0 < \count($entries)) { |
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| 240 | 80 | foreach ($entries as $pre_row) { |
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| 241 | 80 | $row = []; |
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| 242 | 80 | foreach ($vars as $var) { |
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| 243 | 80 | if (isset($pre_row[$var])) { |
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| 244 | 80 | $row[$var] = $pre_row[$var]; |
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| 245 | 80 | $row[$var.' type'] = isset($pre_row[$var.' type']) |
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| 246 | 69 | ? $types[$pre_row[$var.' type']] |
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| 247 | 80 | : ( |
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| 248 | 53 | \in_array($var, $aggregate_vars) |
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| 249 | 14 | ? 'literal' |
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| 250 | 53 | : 'uri' |
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| 251 | 80 | ); |
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| 252 | if ( |
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| 253 | 80 | isset($pre_row[$var.' lang_dt']) |
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| 254 | 80 | && ($lang_dt = $pre_row[$var.' lang_dt']) |
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| 255 | ) { |
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| 256 | 16 | if (preg_match('/^([a-z]+(\-[a-z0-9]+)*)$/i', $lang_dt)) { |
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| 257 | 8 | $row[$var.' lang'] = $lang_dt; |
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| 258 | } else { |
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| 259 | 10 | $row[$var.' datatype'] = $lang_dt; |
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| 260 | } |
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| 261 | } |
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| 262 | } |
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| 263 | } |
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| 264 | 80 | if ($row || !$vars) { |
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| 265 | 80 | $rows[] = $row; |
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| 266 | } |
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| 267 | } |
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| 268 | } |
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| 269 | 89 | $r['rows'] = $rows; |
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| 270 | |||
| 271 | 89 | return $r; |
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| 272 | } |
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| 273 | |||
| 274 | 92 | private function buildIndex($pattern, $id) |
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| 275 | { |
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| 276 | 92 | $pattern['id'] = $id; |
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| 277 | 92 | $type = $pattern['type'] ?? ''; |
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| 278 | 92 | $constraint = $pattern['constraint'] ?? 0; |
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| 279 | 92 | if ('filter' == $type && $constraint) { |
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| 280 | 23 | $sub_pattern = $pattern['constraint']; |
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| 281 | 23 | $sub_pattern['parent_id'] = $id; |
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| 282 | 23 | $sub_id = $id.'_0'; |
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| 283 | 23 | $this->buildIndex($sub_pattern, $sub_id); |
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| 284 | 23 | $pattern['constraint'] = $sub_id; |
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| 285 | } else { |
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| 286 | 92 | $sub_patterns = $pattern['patterns'] ?? []; |
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| 287 | 92 | $keys = array_keys($sub_patterns); |
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| 288 | 92 | $spc = \count($sub_patterns); |
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| 289 | 92 | if ($spc > 4 && $this->pattern_order_offset) { |
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| 290 | $keys = []; |
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| 291 | for ($i = 0; $i < $spc; ++$i) { |
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| 292 | $keys[$i] = $i + $this->pattern_order_offset; |
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| 293 | while ($keys[$i] >= $spc) { |
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| 294 | $keys[$i] -= $spc; |
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| 295 | } |
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| 296 | } |
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| 297 | } |
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| 298 | 92 | foreach ($keys as $i => $key) { |
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| 299 | 92 | $sub_pattern = $sub_patterns[$key]; |
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| 300 | 92 | $sub_pattern['parent_id'] = $id; |
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| 301 | 92 | $sub_id = $id.'_'.$key; |
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| 302 | 92 | $this->buildIndex($sub_pattern, $sub_id); |
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| 303 | 92 | $pattern['patterns'][$i] = $sub_id; |
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| 304 | 92 | if ('union' == $type) { |
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| 305 | 1 | $this->index['union_branches'][] = $sub_id; |
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| 306 | } |
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| 307 | } |
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| 308 | } |
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| 309 | 92 | $this->index['patterns'][$id] = $pattern; |
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| 310 | } |
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| 311 | |||
| 312 | 92 | private function analyzeIndex($pattern) |
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| 313 | { |
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| 314 | 92 | $type = $pattern['type'] ?? ''; |
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| 315 | 92 | if (!$type) { |
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| 316 | return false; |
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| 317 | } |
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| 318 | 92 | $type = $pattern['type']; |
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| 319 | 92 | $id = $pattern['id']; |
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| 320 | /* triple */ |
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| 321 | 92 | if ('triple' == $type) { |
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| 322 | 92 | foreach (['s', 'p', 'o'] as $term) { |
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| 323 | 92 | if ('var' == $pattern[$term.'_type']) { |
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| 324 | 92 | $val = $pattern[$term]; |
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| 325 | 92 | $this->index['vars'][$val] = array_merge( |
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| 326 | 92 | $this->index['vars'][$val] ?? [], |
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| 327 | 92 | [['table' => $pattern['id'], 'col' => $term]] |
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| 328 | 92 | ); |
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| 329 | } |
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| 330 | 92 | if ('bnode' == $pattern[$term.'_type']) { |
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| 331 | $val = $pattern[$term]; |
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| 332 | $this->index['bnodes'][$val] = array_merge( |
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| 333 | $this->index['bnodes'][$val] ?? [], |
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| 334 | [['table' => $pattern['id'], 'col' => $term]] |
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| 335 | ); |
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| 336 | } |
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| 337 | } |
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| 338 | 92 | $this->index['triple_patterns'][] = $pattern['id']; |
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| 339 | /* joins */ |
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| 340 | 92 | if ($this->isOptionalPattern($id)) { |
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| 341 | 2 | $this->index['left_join'][] = $id; |
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| 342 | 92 | } elseif (!$this->index['from']) { |
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| 343 | 92 | $this->index['from'][] = $id; |
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| 344 | 3 | } elseif (!$this->getJoinInfos($id)) { |
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| 345 | $this->index['from'][] = $id; |
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| 346 | } else { |
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| 347 | 3 | $this->index['join'][] = $id; |
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| 348 | } |
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| 349 | /* graph infos, graph vars */ |
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| 350 | 92 | $this->index['patterns'][$id]['graph_infos'] = $this->getGraphInfos($id); |
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| 351 | 92 | foreach ($this->index['patterns'][$id]['graph_infos'] as $info) { |
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| 352 | 31 | if ('graph' == $info['type']) { |
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| 353 | if ($info['var']) { |
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| 354 | $val = $info['var']['value']; |
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| 355 | $this->index['graph_vars'][$val] = array_merge( |
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| 356 | $this->index['graph_vars'][$val] ?? [], |
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| 357 | [['table' => $id]] |
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| 358 | ); |
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| 359 | } elseif ($info['uri']) { |
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| 360 | $val = $info['uri']; |
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| 361 | $this->index['graph_uris'][$val] = array_merge( |
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| 362 | $this->index['graph_uris'][$val] ?? [], |
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| 363 | [['table' => $id]] |
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| 364 | ); |
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| 365 | } |
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| 366 | } |
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| 367 | } |
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| 368 | } |
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| 369 | 92 | $sub_ids = $pattern['patterns'] ?? []; |
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| 370 | 92 | foreach ($sub_ids as $sub_id) { |
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| 371 | 92 | $this->analyzeIndex($this->getPattern($sub_id)); |
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| 372 | } |
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| 373 | } |
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| 374 | |||
| 375 | 92 | private function getGraphInfos($id) |
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| 376 | { |
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| 377 | 92 | $r = []; |
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| 378 | 92 | if ($id) { |
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| 379 | 92 | $pattern = $this->index['patterns'][$id]; |
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| 380 | 92 | $type = $pattern['type']; |
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| 381 | /* graph */ |
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| 382 | 92 | if ('graph' == $type) { |
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| 383 | $r[] = ['type' => 'graph', 'var' => $pattern['var'], 'uri' => $pattern['uri']]; |
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| 384 | } |
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| 385 | 92 | $p_pattern = $this->index['patterns'][$pattern['parent_id']]; |
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| 386 | 92 | if (isset($p_pattern['graph_infos'])) { |
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| 387 | return array_merge($p_pattern['graph_infos'], $r); |
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| 388 | } |
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| 389 | |||
| 390 | 92 | return array_merge($this->getGraphInfos($pattern['parent_id']), $r); |
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| 391 | } else { |
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| 392 | /* FROM / FROM NAMED */ |
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| 393 | 92 | if (isset($this->infos['query']['dataset'])) { |
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| 394 | 92 | foreach ($this->infos['query']['dataset'] as $set) { |
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| 395 | 31 | $r[] = array_merge(['type' => 'dataset'], $set); |
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| 396 | } |
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| 397 | } |
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| 398 | } |
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| 399 | |||
| 400 | 92 | return $r; |
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| 401 | } |
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| 402 | |||
| 403 | 92 | private function getPattern($id): array |
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| 404 | { |
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| 405 | 92 | if (\is_array($id)) { |
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| 406 | return $id; |
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| 407 | } |
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| 408 | |||
| 409 | 92 | return $this->index['patterns'][$id] ?? []; |
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| 410 | } |
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| 411 | |||
| 412 | private function getInitialPattern($id): array |
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| 413 | { |
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| 414 | return $this->initial_index['patterns'][$id] ?? []; |
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| 415 | } |
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| 416 | |||
| 417 | 1 | private function getUnionIndexes($pre_index) |
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| 418 | { |
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| 419 | 1 | $r = []; |
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| 420 | 1 | $branches = []; |
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| 421 | 1 | $min_depth = 1000; |
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| 422 | /* only process branches with minimum depth */ |
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| 423 | 1 | foreach ($pre_index['union_branches'] as $id) { |
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| 424 | 1 | $branches[$id] = \count(preg_split('/\_/', $id)); |
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| 425 | 1 | $min_depth = min($min_depth, $branches[$id]); |
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| 426 | } |
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| 427 | 1 | foreach ($branches as $branch_id => $depth) { |
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| 428 | 1 | if ($depth == $min_depth) { |
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| 429 | 1 | $union_id = preg_replace('/\_[0-9]+$/', '', $branch_id); |
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| 430 | 1 | $index = [ |
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| 431 | 1 | 'keeping' => $branch_id, |
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| 432 | 1 | 'union_branches' => [], |
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| 433 | 1 | 'patterns' => $pre_index['patterns'], |
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| 434 | 1 | ]; |
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| 435 | 1 | $old_branches = $index['patterns'][$union_id]['patterns']; |
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| 436 | 1 | $skip_id = ($old_branches[0] == $branch_id) ? $old_branches[1] : $old_branches[0]; |
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| 437 | 1 | $index['patterns'][$union_id]['type'] = 'group'; |
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| 438 | 1 | $index['patterns'][$union_id]['patterns'] = [$branch_id]; |
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| 439 | 1 | foreach ($index['patterns'] as $pattern_id => $pattern) { |
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| 440 | 1 | if (preg_match('/^'.$skip_id.'/', $pattern_id)) { |
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| 441 | 1 | unset($index['patterns'][$pattern_id]); |
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| 442 | 1 | } elseif ('union' == $pattern['type']) { |
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| 443 | foreach ($pattern['patterns'] as $sub_union_branch_id) { |
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| 444 | $index['union_branches'][] = $sub_union_branch_id; |
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| 445 | } |
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| 446 | } |
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| 447 | } |
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| 448 | 1 | if ($index['union_branches']) { |
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| 449 | $r = array_merge($r, $this->getUnionIndexes($index)); |
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| 450 | } else { |
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| 451 | 1 | $r[] = $index; |
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| 452 | } |
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| 453 | } |
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| 454 | } |
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| 455 | |||
| 456 | 1 | return $r; |
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| 457 | } |
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| 458 | |||
| 459 | 92 | private function isOptionalPattern($id) |
|
| 460 | { |
||
| 461 | 92 | $pattern = $this->getPattern($id); |
|
| 462 | 92 | $type = $pattern['type'] ?? ''; |
|
| 463 | 92 | if ('optional' == $type) { |
|
| 464 | 2 | return 1; |
|
| 465 | } |
||
| 466 | |||
| 467 | 92 | $parentId = $pattern['parent_id'] ?? '0'; |
|
| 468 | 92 | if ('0' == $parentId) { |
|
| 469 | 92 | return 0; |
|
| 470 | } |
||
| 471 | |||
| 472 | 92 | return $this->isOptionalPattern($pattern['parent_id']); |
|
| 473 | } |
||
| 474 | |||
| 475 | 4 | private function getOptionalPattern($id) |
|
| 476 | { |
||
| 477 | 4 | $pn = $this->getPattern($id); |
|
| 478 | do { |
||
| 479 | 4 | $pn = $this->getPattern($pn['parent_id']); |
|
| 480 | 4 | } while ($pn['parent_id'] && ('optional' != $pn['type'])); |
|
| 481 | |||
| 482 | 4 | return $pn['id']; |
|
| 483 | } |
||
| 484 | |||
| 485 | 2 | private function sameOptional($id, $id2) |
|
| 486 | { |
||
| 487 | 2 | return $this->getOptionalPattern($id) == $this->getOptionalPattern($id2); |
|
| 488 | } |
||
| 489 | |||
| 490 | private function isUnionPattern($id) |
||
| 491 | { |
||
| 492 | $pattern = $this->getPattern($id); |
||
| 493 | |||
| 494 | $type = $pattern['type'] ?? ''; |
||
| 495 | if ('union' == $type) { |
||
| 496 | return 1; |
||
| 497 | } |
||
| 498 | |||
| 499 | $parentId = $pattern['parent_id'] ?? '0'; |
||
| 500 | if ('0' == $parentId) { |
||
| 501 | return 0; |
||
| 502 | } |
||
| 503 | |||
| 504 | return $this->isUnionPattern($parentId); |
||
| 505 | } |
||
| 506 | |||
| 507 | 84 | private function getValueTable($col) |
|
| 508 | { |
||
| 509 | 84 | return preg_match('/^(s|o)$/', $col) ? $col.'2val' : 'id2val'; |
|
| 510 | } |
||
| 511 | |||
| 512 | 31 | private function getGraphTable() |
|
| 513 | { |
||
| 514 | 31 | return 'g2t'; |
|
| 515 | } |
||
| 516 | |||
| 517 | 92 | private function getQuerySQL() |
|
| 518 | { |
||
| 519 | 92 | $nl = "\n"; |
|
| 520 | 92 | $where_sql = $this->getWHERESQL(); /* pre-fills $index['sub_joins'] $index['constraints'] */ |
|
| 521 | 92 | $order_sql = $this->getORDERSQL(); /* pre-fills $index['sub_joins'] $index['constraints'] */ |
|
| 522 | |||
| 523 | 92 | return ''.( |
|
| 524 | 92 | $this->is_union_query |
|
| 525 | 1 | ? 'SELECT' |
|
| 526 | 92 | : 'SELECT'.$this->getDistinctSQL() |
|
| 527 | 92 | ).$nl. |
|
| 528 | 92 | $this->getResultVarsSQL().$nl. /* fills $index['sub_joins'] */ |
|
| 529 | 92 | $this->getFROMSQL(). |
|
| 530 | 92 | $this->getAllJoinsSQL(). |
|
| 531 | 92 | $this->getWHERESQL(). |
|
| 532 | 92 | $this->getGROUPSQL(). |
|
| 533 | 92 | $this->getORDERSQL(). |
|
| 534 | 92 | ( |
|
| 535 | 92 | $this->is_union_query |
|
| 536 | 1 | ? '' |
|
| 537 | 92 | : $this->getLIMITSQL() |
|
| 538 | 92 | ).$nl.''; |
|
| 539 | } |
||
| 540 | |||
| 541 | 92 | private function getDistinctSQL() |
|
| 542 | { |
||
| 543 | 92 | $distinct = $this->infos['query']['distinct'] ?? 0; |
|
| 544 | 92 | $reduced = $this->infos['query']['reduced'] ?? 0; |
|
| 545 | |||
| 546 | 92 | $check = $distinct || $reduced; |
|
| 547 | 92 | if ($this->is_union_query) { |
|
| 548 | 1 | return $check ? '' : ' ALL'; |
|
| 549 | } |
||
| 550 | |||
| 551 | 91 | return $check ? ' DISTINCT' : ''; |
|
| 552 | } |
||
| 553 | |||
| 554 | 92 | private function getResultVarsSQL() |
|
| 555 | { |
||
| 556 | 92 | $r = ''; |
|
| 557 | 92 | $vars = $this->infos['query']['result_vars']; |
|
| 558 | 92 | $nl = "\n"; |
|
| 559 | 92 | $added = []; |
|
| 560 | 92 | foreach ($vars as $var) { |
|
| 561 | 92 | $var_name = $var['var']; |
|
| 562 | 92 | $tbl_alias = ''; |
|
| 563 | 92 | if ($tbl_infos = $this->getVarTableInfos($var_name, 0)) { |
|
| 564 | 89 | $tbl = $tbl_infos['table']; |
|
| 565 | 89 | $col = $tbl_infos['col']; |
|
| 566 | 89 | $tbl_alias = $tbl_infos['table_alias']; |
|
| 567 | 4 | } elseif (1 == $var_name) {/* ASK query */ |
|
| 568 | 3 | $r .= '1 AS `success`'; |
|
| 569 | } else { |
||
| 570 | 1 | $msg = 'Result variable "'.$var_name.'" not used in query.'; |
|
| 571 | 1 | $this->logger->warning($msg); |
|
| 572 | } |
||
| 573 | |||
| 574 | 92 | if ($tbl_alias) { |
|
| 575 | /* aggregate */ |
||
| 576 | 89 | if ($var['aggregate']) { |
|
| 577 | 15 | $conv_code = ''; |
|
| 578 | 15 | if ('count' != strtolower($var['aggregate'])) { |
|
| 579 | 7 | $tbl_alias = 'V_'.$tbl.'_'.$col.'.val'; |
|
| 580 | 7 | $conv_code = '0 + '; |
|
| 581 | } |
||
| 582 | 15 | if (!isset($added[$var['alias']])) { |
|
| 583 | 15 | $r .= $r ? ','.$nl.' ' : ' '; |
|
| 584 | |||
| 585 | 15 | $distinct = $this->infos['query']['distinct'] ?? 0; |
|
| 586 | 15 | $distinct_code = ('count' == strtolower($var['aggregate'])) |
|
| 587 | 15 | && $distinct ? 'DISTINCT ' : ''; |
|
| 588 | |||
| 589 | 15 | $r .= $var['aggregate'] |
|
| 590 | 15 | .'('.$conv_code.$distinct_code.$tbl_alias.') AS `'.$var['alias'].'`'; |
|
| 591 | 15 | $added[$var['alias']] = 1; |
|
| 592 | } |
||
| 593 | } else { |
||
| 594 | /* normal var */ |
||
| 595 | 80 | if (!isset($added[$var_name])) { |
|
| 596 | 80 | $r .= $r ? ','.$nl.' ' : ' '; |
|
| 597 | 80 | $r .= $tbl_alias.' AS `'.$var_name.'`'; |
|
| 598 | 80 | $is_s = ('s' == $col); |
|
| 599 | 80 | $is_o = ('o' == $col); |
|
| 600 | 80 | if ('NULL' == $tbl_alias) { |
|
| 601 | /* type / add in UNION queries? */ |
||
| 602 | if ($is_s || $is_o) { |
||
| 603 | $r .= ', '.$nl.' NULL AS `'.$var_name.' type`'; |
||
| 604 | } |
||
| 605 | /* lang_dt / always add it in UNION queries, the var may be used as s/p/o */ |
||
| 606 | if ($is_o || $this->is_union_query) { |
||
| 607 | $r .= ', '.$nl.' NULL AS `'.$var_name.' lang_dt`'; |
||
| 608 | } |
||
| 609 | } else { |
||
| 610 | /* type */ |
||
| 611 | 80 | if ($is_s || $is_o) { |
|
| 612 | 78 | $r .= ', '.$nl.' '.$tbl_alias.'_type AS `'.$var_name.' type`'; |
|
| 613 | } |
||
| 614 | /* lang_dt / always add it in UNION queries, the var may be used as s/p/o */ |
||
| 615 | 80 | if ($is_o) { |
|
| 616 | 67 | $r .= ', '.$nl.' '.$tbl_alias.'_lang_dt AS `'.$var_name.' lang_dt`'; |
|
| 617 | 76 | } elseif ($this->is_union_query) { |
|
| 618 | 1 | $r .= ', '.$nl.' NULL AS `'.$var_name.' lang_dt`'; |
|
| 619 | } |
||
| 620 | } |
||
| 621 | 80 | $added[$var_name] = 1; |
|
| 622 | } |
||
| 623 | } |
||
| 624 | 89 | if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
| 625 | 89 | $this->index['sub_joins'][] = $tbl_alias; |
|
| 626 | } |
||
| 627 | } |
||
| 628 | } |
||
| 629 | |||
| 630 | 92 | return $r ? $r : '1 AS `success`'; |
|
| 631 | } |
||
| 632 | |||
| 633 | 92 | private function getVarTableInfos($var, $ignore_initial_index = 1) |
|
| 634 | { |
||
| 635 | 92 | if ('*' == $var) { |
|
| 636 | 2 | return ['table' => '', 'col' => '', 'table_alias' => '*']; |
|
| 637 | } |
||
| 638 | 91 | if ($infos = $this->index['vars'][$var] ?? 0) { |
|
| 639 | 88 | $infos[0]['table_alias'] = 'T_'.$infos[0]['table'].'.'.$infos[0]['col']; |
|
| 640 | |||
| 641 | 88 | return $infos[0]; |
|
| 642 | } |
||
| 643 | 5 | if ($infos = $this->index['graph_vars'][$var] ?? 0) { |
|
| 644 | $infos[0]['col'] = 'g'; |
||
| 645 | $infos[0]['table_alias'] = 'G_'.$infos[0]['table'].'.'.$infos[0]['col']; |
||
| 646 | |||
| 647 | return $infos[0]; |
||
| 648 | } |
||
| 649 | 5 | if ($this->is_union_query && !$ignore_initial_index) { |
|
| 650 | if ( |
||
| 651 | ($infos = $this->initial_index['vars'][$var] ?? 0) |
||
| 652 | || ($infos = $this->initial_index['graph_vars'][$var] ?? 0) |
||
| 653 | ) { |
||
| 654 | if (!\in_array($var, $this->infos['null_vars'])) { |
||
| 655 | $this->infos['null_vars'][] = $var; |
||
| 656 | } |
||
| 657 | $infos[0]['table_alias'] = 'NULL'; |
||
| 658 | $infos[0]['col'] = !isset($infos[0]['col']) ? '' : $infos[0]['col']; |
||
| 659 | |||
| 660 | return $infos[0]; |
||
| 661 | } |
||
| 662 | } |
||
| 663 | |||
| 664 | 5 | return 0; |
|
| 665 | } |
||
| 666 | |||
| 667 | 92 | private function getFROMSQL() |
|
| 677 | } |
||
| 678 | |||
| 679 | 10 | private function getOrderedJoinIDs() |
|
| 680 | { |
||
| 681 | 10 | return array_merge($this->index['from'], $this->index['join'], $this->index['left_join']); |
|
| 682 | } |
||
| 683 | |||
| 684 | 5 | private function getJoinInfos($id) |
|
| 685 | { |
||
| 686 | 5 | $r = []; |
|
| 687 | 5 | $tbl_ids = $this->getOrderedJoinIDs(); |
|
| 688 | 5 | $pattern = $this->getPattern($id); |
|
| 689 | 5 | foreach ($tbl_ids as $tbl_id) { |
|
| 690 | 5 | $tbl_pattern = $this->getPattern($tbl_id); |
|
| 691 | 5 | if ($tbl_id != $id) { |
|
| 692 | 5 | foreach (['s', 'p', 'o'] as $tbl_term) { |
|
| 693 | 5 | foreach (['var', 'bnode', 'uri'] as $term_type) { |
|
| 694 | 5 | if ($tbl_pattern[$tbl_term.'_type'] == $term_type) { |
|
| 695 | 5 | foreach (['s', 'p', 'o'] as $term) { |
|
| 696 | 5 | if (($pattern[$term.'_type'] == $term_type) && ($tbl_pattern[$tbl_term] == $pattern[$term])) { |
|
| 697 | 5 | $r[] = ['term' => $term, 'join_tbl' => $tbl_id, 'join_term' => $tbl_term]; |
|
| 698 | } |
||
| 699 | } |
||
| 700 | } |
||
| 701 | } |
||
| 702 | } |
||
| 703 | } |
||
| 704 | } |
||
| 705 | |||
| 706 | 5 | return $r; |
|
| 707 | } |
||
| 708 | |||
| 709 | 92 | private function getAllJoinsSQL() |
|
| 710 | { |
||
| 711 | 92 | $js = $this->getJoins(); |
|
| 712 | 92 | $ljs = $this->getLeftJoins(); |
|
| 713 | 92 | $entries = array_merge($js, $ljs); |
|
| 714 | 92 | $id2code = []; |
|
| 715 | 92 | foreach ($entries as $entry) { |
|
| 716 | 51 | if (preg_match('/([^\s]+) ON (.*)/s', $entry, $m)) { |
|
| 717 | 51 | $id2code[$m[1]] = $entry; |
|
| 718 | } |
||
| 719 | } |
||
| 720 | 92 | $deps = []; |
|
| 721 | 92 | foreach ($id2code as $id => $code) { |
|
| 722 | 51 | $deps[$id]['rank'] = 0; |
|
| 723 | 51 | foreach ($id2code as $other_id => $other_code) { |
|
| 724 | 51 | $deps[$id]['rank'] += ($id != $other_id) && preg_match('/'.$other_id.'/', $code) ? 1 : 0; |
|
| 725 | 51 | $deps[$id][$other_id] = ($id != $other_id) && preg_match('/'.$other_id.'/', $code) ? 1 : 0; |
|
| 726 | } |
||
| 727 | } |
||
| 728 | 92 | $r = ''; |
|
| 729 | do { |
||
| 730 | /* get next 0-rank */ |
||
| 731 | 92 | $next_id = 0; |
|
| 732 | 92 | foreach ($deps as $id => $infos) { |
|
| 733 | 51 | if (0 == $infos['rank']) { |
|
| 734 | 51 | $next_id = $id; |
|
| 735 | 51 | break; |
|
| 736 | } |
||
| 737 | } |
||
| 738 | 92 | if ($next_id) { |
|
| 739 | 51 | $r .= "\n".$id2code[$next_id]; |
|
| 740 | 51 | unset($deps[$next_id]); |
|
| 741 | 51 | foreach ($deps as $id => $infos) { |
|
| 742 | 1 | $deps[$id]['rank'] = 0; |
|
| 743 | 1 | unset($deps[$id][$next_id]); |
|
| 744 | 1 | foreach ($infos as $k => $v) { |
|
| 745 | 1 | if (!\in_array($k, ['rank', $next_id])) { |
|
| 746 | 1 | $deps[$id]['rank'] += $v; |
|
| 747 | 1 | $deps[$id][$k] = $v; |
|
| 748 | } |
||
| 749 | } |
||
| 750 | } |
||
| 751 | } |
||
| 752 | 92 | } while ($next_id); |
|
| 753 | |||
| 754 | 92 | return $r; |
|
| 755 | } |
||
| 756 | |||
| 757 | 92 | private function getJoins() |
|
| 758 | { |
||
| 759 | 92 | $r = []; |
|
| 760 | 92 | $nl = "\n"; |
|
| 761 | 92 | foreach ($this->index['join'] as $id) { |
|
| 762 | 2 | $sub_r = $this->getJoinConditionSQL($id); |
|
| 763 | 2 | $r[] = 'JOIN triple T_'.$id.' ON ('.$sub_r.$nl.')'; |
|
| 764 | } |
||
| 765 | 92 | foreach (array_merge($this->index['from'], $this->index['join']) as $id) { |
|
| 766 | 92 | if ($sub_r = $this->getRequiredSubJoinSQL($id)) { |
|
| 767 | 48 | $r[] = $sub_r; |
|
| 768 | } |
||
| 769 | } |
||
| 770 | |||
| 771 | 92 | return $r; |
|
| 772 | } |
||
| 773 | |||
| 774 | 92 | private function getLeftJoins() |
|
| 775 | { |
||
| 776 | 92 | $r = []; |
|
| 777 | 92 | $nl = "\n"; |
|
| 778 | 92 | foreach ($this->index['left_join'] as $id) { |
|
| 779 | 2 | $sub_r = $this->getJoinConditionSQL($id); |
|
| 780 | 2 | $r[] = 'LEFT JOIN triple T_'.$id.' ON ('.$sub_r.$nl.')'; |
|
| 781 | } |
||
| 782 | 92 | foreach ($this->index['left_join'] as $id) { |
|
| 783 | 2 | if ($sub_r = $this->getRequiredSubJoinSQL($id, 'LEFT')) { |
|
| 784 | $r[] = $sub_r; |
||
| 785 | } |
||
| 786 | } |
||
| 787 | |||
| 788 | 92 | return $r; |
|
| 789 | } |
||
| 790 | |||
| 791 | 4 | private function getJoinConditionSQL($id) |
|
| 792 | { |
||
| 793 | 4 | $r = ''; |
|
| 794 | 4 | $nl = "\n"; |
|
| 795 | 4 | $infos = $this->getJoinInfos($id); |
|
| 796 | 4 | $pattern = $this->getPattern($id); |
|
| 797 | |||
| 798 | 4 | $tbl = 'T_'.$id; |
|
| 799 | /* core dependency */ |
||
| 800 | 4 | $d_tbls = $this->getDependentJoins($id); |
|
| 801 | 4 | foreach ($d_tbls as $d_tbl) { |
|
| 802 | 2 | if (preg_match('/^T_([0-9\_]+)\.[spo]+/', $d_tbl, $m) && ($m[1] != $id)) { |
|
| 803 | if ($this->isJoinedBefore($m[1], $id) && !\in_array($m[1], array_merge($this->index['from'], $this->index['join']))) { |
||
| 804 | $r .= $r ? $nl.' AND ' : $nl.' '; |
||
| 805 | $r .= '('.$d_tbl.' IS NOT NULL)'; |
||
| 806 | } |
||
| 807 | $this->logDependency($id, $d_tbl); |
||
| 808 | } |
||
| 809 | } |
||
| 810 | /* triple-based join info */ |
||
| 811 | 4 | foreach ($infos as $info) { |
|
| 812 | 4 | if ($this->isJoinedBefore($info['join_tbl'], $id) && $this->joinDependsOn($id, $info['join_tbl'])) { |
|
| 813 | 4 | $r .= $r ? $nl.' AND ' : $nl.' '; |
|
| 814 | 4 | $r .= '('.$tbl.'.'.$info['term'].' = T_'.$info['join_tbl'].'.'.$info['join_term'].')'; |
|
| 815 | } |
||
| 816 | } |
||
| 817 | /* filters etc */ |
||
| 818 | 4 | if ($sub_r = $this->getPatternSQL($pattern, 'join__T_'.$id)) { |
|
| 819 | 4 | $r .= $r ? $nl.' AND '.$sub_r : $nl.' '.'('.$sub_r.')'; |
|
| 820 | } |
||
| 821 | |||
| 822 | 4 | return $r; |
|
| 823 | } |
||
| 824 | |||
| 825 | /** |
||
| 826 | * A log of identified table join dependencies in getJoinConditionSQL. |
||
| 827 | */ |
||
| 828 | private function logDependency($id, $tbl) |
||
| 829 | { |
||
| 830 | if (!isset($this->dependency_log[$id])) { |
||
| 831 | $this->dependency_log[$id] = []; |
||
| 832 | } |
||
| 833 | if (!\in_array($tbl, $this->dependency_log[$id])) { |
||
| 834 | $this->dependency_log[$id][] = $tbl; |
||
| 835 | } |
||
| 836 | } |
||
| 837 | |||
| 838 | /** |
||
| 839 | * checks whether entries in the dependecy log could perhaps be optimized |
||
| 840 | * (triggers re-ordering of patterns. |
||
| 841 | */ |
||
| 842 | 92 | private function problematicDependencies() |
|
| 843 | { |
||
| 844 | 92 | foreach ($this->dependency_log as $id => $tbls) { |
|
| 845 | if (\count($tbls) > 1) { |
||
| 846 | return \count($tbls); |
||
| 847 | } |
||
| 848 | } |
||
| 849 | |||
| 850 | 92 | return 0; |
|
| 851 | } |
||
| 852 | |||
| 853 | 9 | private function isJoinedBefore($tbl_1, $tbl_2) |
|
| 854 | { |
||
| 855 | 9 | $tbl_ids = $this->getOrderedJoinIDs(); |
|
| 856 | 9 | foreach ($tbl_ids as $id) { |
|
| 857 | 9 | if ($id == $tbl_1) { |
|
| 858 | 9 | return 1; |
|
| 859 | } |
||
| 860 | 1 | if ($id == $tbl_2) { |
|
| 861 | 1 | return 0; |
|
| 862 | } |
||
| 863 | } |
||
| 864 | } |
||
| 865 | |||
| 866 | 4 | private function joinDependsOn($id, $id2) |
|
| 867 | { |
||
| 868 | 4 | if (\in_array($id2, array_merge($this->index['from'], $this->index['join']))) { |
|
| 869 | 4 | return 1; |
|
| 870 | } |
||
| 871 | 1 | $d_tbls = $this->getDependentJoins($id2); |
|
| 872 | //echo $id . ' :: ' . $id2 . '=>' . print_r($d_tbls, 1); |
||
| 873 | 1 | foreach ($d_tbls as $d_tbl) { |
|
| 874 | 1 | if (preg_match('/^T_'.$id.'\./', $d_tbl)) { |
|
| 875 | return 1; |
||
| 876 | } |
||
| 877 | } |
||
| 878 | |||
| 879 | 1 | return 0; |
|
| 880 | } |
||
| 881 | |||
| 882 | 4 | private function getDependentJoins($id) |
|
| 883 | { |
||
| 884 | 4 | $r = []; |
|
| 885 | /* sub joins */ |
||
| 886 | 4 | foreach ($this->index['sub_joins'] as $alias) { |
|
| 887 | 2 | if (preg_match('/^(T|V|G)_'.$id.'/', $alias)) { |
|
| 888 | 2 | $r[] = $alias; |
|
| 889 | } |
||
| 890 | } |
||
| 891 | /* siblings in shared optional */ |
||
| 892 | 4 | $o_id = $this->getOptionalPattern($id); |
|
| 893 | 4 | foreach ($this->index['sub_joins'] as $alias) { |
|
| 894 | 2 | if (preg_match('/^(T|V|G)_'.$o_id.'/', $alias) && !\in_array($alias, $r)) { |
|
| 895 | $r[] = $alias; |
||
| 896 | } |
||
| 897 | } |
||
| 898 | 4 | foreach ($this->index['left_join'] as $alias) { |
|
| 899 | 2 | if (preg_match('/^'.$o_id.'/', $alias) && !\in_array($alias, $r)) { |
|
| 900 | 2 | $r[] = 'T_'.$alias.'.s'; |
|
| 901 | } |
||
| 902 | } |
||
| 903 | |||
| 904 | 4 | return $r; |
|
| 905 | } |
||
| 906 | |||
| 907 | 92 | private function getRequiredSubJoinSQL($id, $prefix = '') |
|
| 908 | { |
||
| 909 | /* id is a triple pattern id. Optional FILTERS and GRAPHs are getting added to the join directly */ |
||
| 910 | 92 | $nl = "\n"; |
|
| 911 | 92 | $r = ''; |
|
| 912 | 92 | foreach ($this->index['sub_joins'] as $alias) { |
|
| 913 | 91 | if (preg_match('/^V_'.$id.'_([a-z\_]+)\.val$/', $alias, $m)) { |
|
| 914 | 17 | $col = $m[1]; |
|
| 915 | 17 | $sub_r = ''; |
|
| 916 | 17 | if ($this->isOptionalPattern($id)) { |
|
| 917 | $pattern = $this->getPattern($id); |
||
| 918 | do { |
||
| 919 | $pattern = $this->getPattern($pattern['parent_id']); |
||
| 920 | } while ($pattern['parent_id'] && ('optional' != $pattern['type'])); |
||
| 921 | $sub_r = $this->getPatternSQL($pattern, 'sub_join__V_'.$id); |
||
| 922 | } |
||
| 923 | 17 | $sub_r = $sub_r ? $nl.' AND ('.$sub_r.')' : ''; |
|
| 924 | /* lang dt only on literals */ |
||
| 925 | 17 | if ('o_lang_dt' == $col) { |
|
| 926 | 4 | $sub_sub_r = 'T_'.$id.'.o_type = 2'; |
|
| 927 | 4 | $sub_r .= $nl.' AND ('.$sub_sub_r.')'; |
|
| 928 | } |
||
| 929 | 17 | $cur_prefix = $prefix ? $prefix.' ' : ''; |
|
| 930 | 17 | if ('g' == $col) { |
|
| 931 | $r .= trim($cur_prefix.'JOIN '.$this->getValueTable($col).' V_'.$id.'_'.$col.' ON ('.$nl.' (G_'.$id.'.'.$col.' = V_'.$id.'_'.$col.'.id) '.$sub_r.$nl.')'); |
||
| 932 | } else { |
||
| 933 | 17 | $r .= trim($cur_prefix.'JOIN '.$this->getValueTable($col).' V_'.$id.'_'.$col.' ON ('.$nl.' (T_'.$id.'.'.$col.' = V_'.$id.'_'.$col.'.id) '.$sub_r.$nl.')'); |
|
| 934 | } |
||
| 935 | 87 | } elseif (preg_match('/^G_'.$id.'\.g$/', $alias, $m)) { |
|
| 936 | 31 | $pattern = $this->getPattern($id); |
|
| 937 | 31 | $sub_r = $this->getPatternSQL($pattern, 'graph_sub_join__G_'.$id); |
|
| 938 | 31 | $sub_r = $sub_r ? $nl.' AND '.$sub_r : ''; |
|
| 939 | /* dataset restrictions */ |
||
| 940 | 31 | $gi = $this->getGraphInfos($id); |
|
| 941 | 31 | $sub_sub_r = ''; |
|
| 942 | 31 | $added_gts = []; |
|
| 943 | 31 | foreach ($gi as $set) { |
|
| 944 | 31 | if (isset($set['graph']) && !\in_array($set['graph'], $added_gts)) { |
|
| 945 | 31 | $sub_sub_r .= '' !== $sub_sub_r ? ',' : ''; |
|
| 946 | 31 | $sub_sub_r .= $this->getTermID($set['graph'], 'g'); |
|
| 947 | 31 | $added_gts[] = $set['graph']; |
|
| 948 | } |
||
| 949 | } |
||
| 950 | 31 | $sub_r .= ('' !== $sub_sub_r) ? $nl.' AND (G_'.$id.'.g IN ('.$sub_sub_r.'))' : ''; |
|
| 951 | /* other graph join conditions */ |
||
| 952 | 31 | foreach ($this->index['graph_vars'] as $var => $occurs) { |
|
| 953 | $occur_tbls = []; |
||
| 954 | foreach ($occurs as $occur) { |
||
| 955 | $occur_tbls[] = $occur['table']; |
||
| 956 | if ($occur['table'] == $id) { |
||
| 957 | break; |
||
| 958 | } |
||
| 959 | } |
||
| 960 | foreach ($occur_tbls as $tbl) { |
||
| 961 | if (($tbl != $id) && \in_array($id, $occur_tbls) && $this->isJoinedBefore($tbl, $id)) { |
||
| 962 | $sub_r .= $nl.' AND (G_'.$id.'.g = G_'.$tbl.'.g)'; |
||
| 963 | } |
||
| 964 | } |
||
| 965 | } |
||
| 966 | 31 | $cur_prefix = $prefix ? $prefix.' ' : ''; |
|
| 967 | 31 | $r .= trim($cur_prefix.'JOIN '.$this->getGraphTable().' G_'.$id.' ON ('.$nl.' (T_'.$id.'.t = G_'.$id.'.t)'.$sub_r.$nl.')'); |
|
| 968 | } |
||
| 969 | } |
||
| 970 | |||
| 971 | 92 | return $r; |
|
| 972 | } |
||
| 973 | |||
| 974 | 92 | private function getWHERESQL() |
|
| 975 | { |
||
| 976 | 92 | $r = ''; |
|
| 977 | 92 | $nl = "\n"; |
|
| 978 | /* standard constraints */ |
||
| 979 | 92 | $sub_r = $this->getPatternSQL($this->getPattern('0'), 'where'); |
|
| 980 | /* additional constraints */ |
||
| 981 | 92 | foreach ($this->index['from'] as $id) { |
|
| 982 | 92 | if ($sub_sub_r = $this->getConstraintSQL($id)) { |
|
| 983 | $sub_r .= $sub_r ? $nl.' AND '.$sub_sub_r : $sub_sub_r; |
||
| 984 | } |
||
| 985 | } |
||
| 986 | 92 | $r .= $sub_r ?: ''; |
|
| 987 | /* left join dependencies */ |
||
| 988 | 92 | foreach ($this->index['left_join'] as $id) { |
|
| 989 | 2 | $d_joins = $this->getDependentJoins($id); |
|
| 990 | 2 | $added = []; |
|
| 991 | 2 | $d_aliases = []; |
|
| 992 | 2 | $id_alias = 'T_'.$id.'.s'; |
|
| 993 | 2 | foreach ($d_joins as $alias) { |
|
| 994 | 2 | if (preg_match('/^(T|V|G)_([0-9\_]+)(_[spo])?\.([a-z\_]+)/', $alias, $m)) { |
|
| 995 | 2 | $tbl_type = $m[1]; |
|
| 996 | 2 | $tbl_pattern_id = $m[2]; |
|
| 997 | 2 | $suffix = $m[3]; |
|
| 998 | /* get rid of dependency permutations and nested optionals */ |
||
| 999 | 2 | if (($tbl_pattern_id >= $id) && $this->sameOptional($tbl_pattern_id, $id)) { |
|
| 1000 | 2 | if (!\in_array($tbl_type.'_'.$tbl_pattern_id.$suffix, $added)) { |
|
| 1001 | 2 | $sub_r .= $sub_r ? ' AND ' : ''; |
|
| 1002 | 2 | $sub_r .= $alias.' IS NULL'; |
|
| 1003 | 2 | $d_aliases[] = $alias; |
|
| 1004 | 2 | $added[] = $tbl_type.'_'.$tbl_pattern_id.$suffix; |
|
| 1005 | 2 | $id_alias = ($tbl_pattern_id == $id) ? $alias : $id_alias; |
|
| 1006 | } |
||
| 1007 | } |
||
| 1008 | } |
||
| 1009 | } |
||
| 1010 | /* TODO fix this! */ |
||
| 1011 | 2 | if (\count($d_aliases) > 2) { |
|
| 1012 | $sub_r1 = ' /* '.$id_alias.' dependencies */'; |
||
| 1013 | $sub_r2 = '(('.$id_alias.' IS NULL) OR (CONCAT('.implode(', ', $d_aliases).') IS NOT NULL))'; |
||
| 1014 | $r .= $r ? $nl.$sub_r1.$nl.' AND '.$sub_r2 : $sub_r1.$nl.$sub_r2; |
||
| 1015 | } |
||
| 1016 | } |
||
| 1017 | |||
| 1018 | 92 | return $r ? $nl.'WHERE '.$r : ''; |
|
| 1019 | } |
||
| 1020 | |||
| 1021 | private function addConstraintSQLEntry($id, $sql) |
||
| 1022 | { |
||
| 1023 | if (!isset($this->index['constraints'][$id])) { |
||
| 1024 | $this->index['constraints'][$id] = []; |
||
| 1025 | } |
||
| 1026 | if (!\in_array($sql, $this->index['constraints'][$id])) { |
||
| 1027 | $this->index['constraints'][$id][] = $sql; |
||
| 1028 | } |
||
| 1029 | } |
||
| 1030 | |||
| 1031 | 92 | private function getConstraintSQL($id) |
|
| 1032 | { |
||
| 1033 | 92 | $r = ''; |
|
| 1034 | 92 | $nl = "\n"; |
|
| 1035 | 92 | $constraints = $this->index['constraints'][$id] ?? []; |
|
| 1036 | 92 | foreach ($constraints as $constraint) { |
|
| 1037 | $r .= $r ? $nl.' AND '.$constraint : $constraint; |
||
| 1038 | } |
||
| 1039 | |||
| 1040 | 92 | return $r; |
|
| 1041 | } |
||
| 1042 | |||
| 1043 | 92 | private function getPatternSQL($pattern, $context) |
|
| 1044 | { |
||
| 1045 | 92 | $type = $pattern['type'] ?? ''; |
|
| 1046 | 92 | if (!$type) { |
|
| 1047 | return ''; |
||
| 1048 | } |
||
| 1049 | |||
| 1050 | 92 | $m = 'get'.ucfirst($type).'PatternSQL'; |
|
| 1051 | |||
| 1052 | 92 | return method_exists($this, $m) |
|
| 1053 | 92 | ? $this->$m($pattern, $context) |
|
| 1054 | 92 | : $this->getDefaultPatternSQL($pattern, $context); |
|
| 1055 | } |
||
| 1056 | |||
| 1057 | 92 | private function getDefaultPatternSQL($pattern, $context) |
|
| 1058 | { |
||
| 1059 | 92 | $r = ''; |
|
| 1060 | 92 | $nl = "\n"; |
|
| 1061 | 92 | $sub_ids = $pattern['patterns'] ?? []; |
|
| 1062 | 92 | foreach ($sub_ids as $sub_id) { |
|
| 1063 | 92 | $sub_r = $this->getPatternSQL($this->getPattern($sub_id), $context); |
|
| 1064 | 92 | $r .= ($r && $sub_r) ? $nl.' AND ('.$sub_r.')' : ($sub_r ?: ''); |
|
| 1065 | } |
||
| 1066 | |||
| 1067 | 92 | return $r ? $r : ''; |
|
| 1068 | } |
||
| 1069 | |||
| 1070 | 92 | private function getTriplePatternSQL($pattern, $context) |
|
| 1071 | { |
||
| 1072 | 92 | $r = ''; |
|
| 1073 | 92 | $nl = "\n"; |
|
| 1074 | 92 | $id = $pattern['id']; |
|
| 1075 | /* s p o */ |
||
| 1076 | 92 | $vars = []; |
|
| 1077 | 92 | foreach (['s', 'p', 'o'] as $term) { |
|
| 1078 | 92 | $sub_r = ''; |
|
| 1079 | 92 | $type = $pattern[$term.'_type']; |
|
| 1080 | 92 | if ('uri' == $type) { |
|
| 1081 | 49 | $term_id = $this->getTermID($pattern[$term], $term); |
|
| 1082 | 49 | $sub_r = '(T_'.$id.'.'.$term.' = '.$term_id.') /* ' |
|
| 1083 | 49 | .preg_replace('/[\#\*\>]/', '::', $pattern[$term]).' */'; |
|
| 1084 | 92 | } elseif ('literal' == $type) { |
|
| 1085 | 6 | $term_id = $this->getTermID($pattern[$term], $term); |
|
| 1086 | 6 | $sub_r = '(T_'.$id.'.'.$term.' = '.$term_id.') /* ' |
|
| 1087 | 6 | .preg_replace('/[\#\n\*\>]/', ' ', $pattern[$term]).' */'; |
|
| 1088 | if ( |
||
| 1089 | 6 | ($lang_dt = $pattern[$term.'_lang'] ?? '') |
|
| 1090 | 6 | || ($lang_dt = $pattern[$term.'_datatype'] ?? '') |
|
| 1091 | ) { |
||
| 1092 | 2 | $lang_dt_id = $this->getTermID($lang_dt); |
|
| 1093 | 6 | $sub_r .= $nl |
|
| 1094 | 6 | .' AND (T_'.$id.'.'.$term.'_lang_dt = '.$lang_dt_id.') /* ' |
|
| 1095 | 6 | .preg_replace('/[\#\*\>]/', '::', $lang_dt).' */'; |
|
| 1096 | } |
||
| 1097 | 92 | } elseif ('var' == $type) { |
|
| 1098 | 92 | $val = $pattern[$term]; |
|
| 1099 | 92 | if (isset($vars[$val])) { |
|
| 1100 | /* repeated var in pattern */ |
||
| 1101 | $sub_r = '(T_'.$id.'.'.$term.'='.'T_'.$id.'.'.$vars[$val].')'; |
||
| 1102 | } |
||
| 1103 | 92 | $vars[$val] = $term; |
|
| 1104 | 92 | if ($infos = $this->index['graph_vars'][$val] ?? 0) { |
|
| 1105 | /* graph var in triple pattern */ |
||
| 1106 | $sub_r .= $sub_r ? $nl.' AND ' : ''; |
||
| 1107 | $tbl = $infos[0]['table']; |
||
| 1108 | $sub_r .= 'G_'.$tbl.'.g = T_'.$id.'.'.$term; |
||
| 1109 | } |
||
| 1110 | } |
||
| 1111 | 92 | if ($sub_r) { |
|
| 1112 | if ( |
||
| 1113 | 49 | preg_match('/^(join)/', $context) |
|
| 1114 | 49 | || (preg_match('/^where/', $context) && \in_array($id, $this->index['from'])) |
|
| 1115 | ) { |
||
| 1116 | 49 | $r .= $r ? $nl.' AND '.$sub_r : $sub_r; |
|
| 1117 | } |
||
| 1118 | } |
||
| 1119 | } |
||
| 1120 | /* g */ |
||
| 1121 | 92 | if ($infos = $pattern['graph_infos']) { |
|
| 1122 | 31 | $tbl_alias = 'G_'.$id.'.g'; |
|
| 1123 | 31 | if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
| 1124 | 31 | $this->index['sub_joins'][] = $tbl_alias; |
|
| 1125 | } |
||
| 1126 | 31 | $sub_r = ['graph_var' => '', 'graph_uri' => '', 'from' => '', 'from_named' => '']; |
|
| 1127 | 31 | foreach ($infos as $info) { |
|
| 1128 | 31 | $type = $info['type']; |
|
| 1129 | 31 | if ('graph' == $type) { |
|
| 1130 | if ($info['uri']) { |
||
| 1131 | $term_id = $this->getTermID($info['uri'], 'g'); |
||
| 1132 | $sub_r['graph_uri'] .= $sub_r['graph_uri'] ? $nl.' AND ' : ''; |
||
| 1133 | $sub_r['graph_uri'] .= '('.$tbl_alias.' = '.$term_id.') /* ' |
||
| 1134 | .preg_replace('/[\#\*\>]/', '::', $info['uri']).' */'; |
||
| 1135 | } |
||
| 1136 | } |
||
| 1137 | } |
||
| 1138 | 31 | if ($sub_r['from'] && $sub_r['from_named']) { |
|
| 1139 | $sub_r['from_named'] = ''; |
||
| 1140 | } |
||
| 1141 | 31 | if (!$sub_r['from'] && !$sub_r['from_named']) { |
|
| 1142 | 31 | $sub_r['graph_var'] = ''; |
|
| 1143 | } |
||
| 1144 | 31 | if (preg_match('/^(graph_sub_join)/', $context)) { |
|
| 1145 | 31 | foreach ($sub_r as $g_type => $g_sql) { |
|
| 1146 | 31 | if ($g_sql) { |
|
| 1147 | $r .= $r ? $nl.' AND '.$g_sql : $g_sql; |
||
| 1148 | } |
||
| 1149 | } |
||
| 1150 | } |
||
| 1151 | } |
||
| 1152 | /* optional sibling filters? */ |
||
| 1153 | 92 | if (preg_match('/^(join|sub_join)/', $context) && $this->isOptionalPattern($id)) { |
|
| 1154 | 2 | $o_pattern = $pattern; |
|
| 1155 | do { |
||
| 1156 | 2 | $o_pattern = $this->getPattern($o_pattern['parent_id']); |
|
| 1157 | 2 | } while ($o_pattern['parent_id'] && ('optional' != $o_pattern['type'])); |
|
| 1158 | 2 | if ($sub_r = $this->getPatternSQL($o_pattern, 'optional_filter'.preg_replace('/^(.*)(__.*)$/', '\\2', $context))) { |
|
| 1159 | $r .= $r ? $nl.' AND '.$sub_r : $sub_r; |
||
| 1160 | } |
||
| 1161 | /* created constraints */ |
||
| 1162 | 2 | if ($sub_r = $this->getConstraintSQL($id)) { |
|
| 1163 | $r .= $r ? $nl.' AND '.$sub_r : $sub_r; |
||
| 1164 | } |
||
| 1165 | } |
||
| 1166 | /* result */ |
||
| 1167 | 92 | if (preg_match('/^(where)/', $context) && $this->isOptionalPattern($id)) { |
|
| 1168 | 2 | return ''; |
|
| 1169 | } |
||
| 1170 | |||
| 1171 | 92 | return $r; |
|
| 1172 | } |
||
| 1173 | |||
| 1174 | 23 | private function getFilterPatternSQL($pattern, $context) |
|
| 1175 | { |
||
| 1176 | 23 | $r = ''; |
|
| 1177 | 23 | $id = $pattern['id']; |
|
| 1178 | 23 | $constraint_id = $pattern['constraint'] ?? ''; |
|
| 1179 | 23 | $constraint = $this->getPattern($constraint_id); |
|
| 1180 | 23 | $constraint_type = $constraint['type']; |
|
| 1181 | 23 | if ('built_in_call' == $constraint_type) { |
|
| 1182 | 14 | $r = $this->getBuiltInCallSQL($constraint, $context); |
|
| 1183 | 9 | } elseif ('expression' == $constraint_type) { |
|
| 1184 | 9 | $r = $this->getExpressionSQL($constraint, $context, '', 'filter'); |
|
| 1185 | } else { |
||
| 1186 | $m = 'get'.ucfirst($constraint_type).'ExpressionSQL'; |
||
| 1187 | if (method_exists($this, $m)) { |
||
| 1188 | $r = $this->$m($constraint, $context, '', 'filter'); |
||
| 1189 | } |
||
| 1190 | } |
||
| 1191 | 23 | if ($this->isOptionalPattern($id) && !preg_match('/^(join|optional_filter)/', $context)) { |
|
| 1192 | return ''; |
||
| 1193 | } |
||
| 1194 | /* unconnected vars in FILTERs eval to false */ |
||
| 1195 | 23 | $sub_r = $this->hasUnconnectedFilterVars($id); |
|
| 1196 | 23 | if ($sub_r) { |
|
| 1197 | if ('alias' == $sub_r) { |
||
| 1198 | if (!\in_array($r, $this->index['havings'])) { |
||
| 1199 | $this->index['havings'][] = $r; |
||
| 1200 | } |
||
| 1201 | |||
| 1202 | return ''; |
||
| 1203 | } elseif (preg_match('/^T([^\s]+\.)g (.*)$/s', $r, $m)) {/* graph filter */ |
||
| 1204 | return 'G'.$m[1].'t '.$m[2]; |
||
| 1205 | } elseif (preg_match('/^\(*V[^\s]+_g\.val .*$/s', $r, $m)) { |
||
| 1206 | /* graph value filter, @@improveMe */ |
||
| 1207 | } else { |
||
| 1208 | return 'FALSE'; |
||
| 1209 | } |
||
| 1210 | } |
||
| 1211 | /* some really ugly tweaks */ |
||
| 1212 | /* empty language filter: FILTER ( lang(?v) = '' ) */ |
||
| 1213 | 23 | $r = preg_replace( |
|
| 1214 | 23 | '/\(\/\* language call \*\/ ([^\s]+) = ""\)/s', |
|
| 1215 | 23 | '((\\1 = "") OR (\\1 LIKE "%:%"))', |
|
| 1216 | 23 | $r |
|
| 1217 | 23 | ); |
|
| 1218 | |||
| 1219 | 23 | return $r; |
|
| 1220 | } |
||
| 1221 | |||
| 1222 | /** |
||
| 1223 | * Checks if vars in the given (filter) pattern are used within the filter's scope. |
||
| 1224 | */ |
||
| 1225 | 23 | private function hasUnconnectedFilterVars($filter_pattern_id) |
|
| 1226 | { |
||
| 1227 | 23 | $scope_id = $this->getFilterScope($filter_pattern_id); |
|
| 1228 | 23 | $vars = $this->getFilterVars($filter_pattern_id); |
|
| 1229 | 23 | $r = 0; |
|
| 1230 | 23 | foreach ($vars as $var_name) { |
|
| 1231 | 7 | if ($this->isUsedTripleVar($var_name, $scope_id)) { |
|
| 1232 | 7 | continue; |
|
| 1233 | } |
||
| 1234 | if ($this->isAliasVar($var_name)) { |
||
| 1235 | $r = 'alias'; |
||
| 1236 | break; |
||
| 1237 | } |
||
| 1238 | $r = 1; |
||
| 1239 | break; |
||
| 1240 | } |
||
| 1241 | |||
| 1242 | 23 | return $r; |
|
| 1243 | } |
||
| 1244 | |||
| 1245 | /** |
||
| 1246 | * Returns the given filter pattern's scope (the id of the parent group pattern). |
||
| 1247 | */ |
||
| 1248 | 23 | private function getFilterScope($filter_pattern_id) |
|
| 1249 | { |
||
| 1250 | 23 | $patterns = $this->initial_index['patterns']; |
|
| 1251 | 23 | $r = ''; |
|
| 1252 | 23 | foreach ($patterns as $id => $p) { |
|
| 1253 | /* the id has to be sub-part of the given filter id */ |
||
| 1254 | 23 | if (!preg_match('/^'.$id.'.+/', $filter_pattern_id)) { |
|
| 1255 | 23 | continue; |
|
| 1256 | } |
||
| 1257 | /* we are looking for a group or union */ |
||
| 1258 | 23 | if (!preg_match('/^(group|union)$/', $p['type'])) { |
|
| 1259 | continue; |
||
| 1260 | } |
||
| 1261 | /* we are looking for the longest/deepest match */ |
||
| 1262 | 23 | if (\strlen($id) > \strlen($r)) { |
|
| 1263 | 23 | $r = $id; |
|
| 1264 | } |
||
| 1265 | } |
||
| 1266 | |||
| 1267 | 23 | return $r; |
|
| 1268 | } |
||
| 1269 | |||
| 1270 | /** |
||
| 1271 | * Builds a list of vars used in the given (filter) pattern. |
||
| 1272 | */ |
||
| 1273 | 23 | private function getFilterVars($filter_pattern_id) |
|
| 1274 | { |
||
| 1275 | 23 | $r = []; |
|
| 1276 | 23 | $patterns = $this->initial_index['patterns']; |
|
| 1277 | /* find vars in the given filter (i.e. the given id is part of their pattern id) */ |
||
| 1278 | 23 | foreach ($patterns as $id => $p) { |
|
| 1279 | 23 | if (!preg_match('/^'.$filter_pattern_id.'.+/', $id)) { |
|
| 1280 | 23 | continue; |
|
| 1281 | } |
||
| 1282 | 23 | $var_name = ''; |
|
| 1283 | 23 | if ('var' == $p['type']) { |
|
| 1284 | 5 | $var_name = $p['value']; |
|
| 1285 | 23 | } elseif (('built_in_call' == $p['type']) && ('bound' == $p['call'])) { |
|
| 1286 | 2 | $var_name = $p['args'][0]['value']; |
|
| 1287 | } |
||
| 1288 | 23 | if ($var_name && !\in_array($var_name, $r)) { |
|
| 1289 | 7 | $r[] = $var_name; |
|
| 1290 | } |
||
| 1291 | } |
||
| 1292 | |||
| 1293 | 23 | return $r; |
|
| 1294 | } |
||
| 1295 | |||
| 1296 | /** |
||
| 1297 | * Checks if $var_name appears as result projection alias. |
||
| 1298 | */ |
||
| 1299 | private function isAliasVar($var_name) |
||
| 1300 | { |
||
| 1301 | foreach ($this->infos['query']['result_vars'] as $r_var) { |
||
| 1302 | if ($r_var['alias'] == $var_name) { |
||
| 1303 | return 1; |
||
| 1304 | } |
||
| 1305 | } |
||
| 1306 | |||
| 1307 | return 0; |
||
| 1308 | } |
||
| 1309 | |||
| 1310 | /** |
||
| 1311 | * Checks if $var_name is used in a triple pattern in the given scope. |
||
| 1312 | */ |
||
| 1313 | 7 | private function isUsedTripleVar($var_name, $scope_id = '0') |
|
| 1314 | { |
||
| 1315 | 7 | $patterns = $this->initial_index['patterns']; |
|
| 1316 | 7 | foreach ($patterns as $id => $p) { |
|
| 1317 | 7 | if ('triple' != $p['type']) { |
|
| 1318 | continue; |
||
| 1319 | } |
||
| 1320 | 7 | if (!preg_match('/^'.$scope_id.'.+/', $id)) { |
|
| 1321 | continue; |
||
| 1322 | } |
||
| 1323 | 7 | foreach (['s', 'p', 'o'] as $term) { |
|
| 1324 | 7 | if ('var' != $p[$term.'_type']) { |
|
| 1325 | 7 | continue; |
|
| 1326 | } |
||
| 1327 | 7 | if ($p[$term] == $var_name) { |
|
| 1328 | 7 | return 1; |
|
| 1329 | } |
||
| 1330 | } |
||
| 1331 | } |
||
| 1332 | } |
||
| 1333 | |||
| 1334 | 13 | private function getExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
| 1335 | { |
||
| 1336 | 13 | $r = ''; |
|
| 1337 | 13 | $type = $pattern['type'] ?? ''; |
|
| 1338 | 13 | $sub_type = $pattern['sub_type'] ?? $type; |
|
| 1339 | 13 | if (preg_match('/^(and|or)$/', $sub_type)) { |
|
| 1340 | 1 | foreach ($pattern['patterns'] as $sub_id) { |
|
| 1341 | 1 | $sub_pattern = $this->getPattern($sub_id); |
|
| 1342 | 1 | $sub_pattern_type = $sub_pattern['type']; |
|
| 1343 | 1 | if ('built_in_call' == $sub_pattern_type) { |
|
| 1344 | $sub_r = $this->getBuiltInCallSQL($sub_pattern, $context, '', $parent_type); |
||
| 1345 | } else { |
||
| 1346 | 1 | $sub_r = $this->getExpressionSQL($sub_pattern, $context, '', $parent_type); |
|
| 1347 | } |
||
| 1348 | 1 | if ($sub_r) { |
|
| 1349 | 1 | $r .= $r ? ' '.strtoupper($sub_type).' ('.$sub_r.')' : '('.$sub_r.')'; |
|
| 1350 | } |
||
| 1351 | } |
||
| 1352 | 13 | } elseif ('built_in_call' == $sub_type) { |
|
| 1353 | $r = $this->getBuiltInCallSQL($pattern, $context, $val_type, $parent_type); |
||
| 1354 | 13 | } elseif (preg_match('/literal/', $sub_type)) { |
|
| 1355 | 4 | $r = $this->getLiteralExpressionSQL($pattern, $context, $val_type, $parent_type); |
|
| 1356 | 11 | } elseif ($sub_type) { |
|
| 1357 | 11 | $m = 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
| 1358 | 11 | if (method_exists($this, $m)) { |
|
| 1359 | 11 | $r = $this->$m($pattern, $context, '', $parent_type); |
|
| 1360 | } |
||
| 1361 | } |
||
| 1362 | /* skip expressions that reference non-yet-joined tables */ |
||
| 1363 | 13 | if (preg_match('/__(T|V|G)_(.+)$/', $context, $m)) { |
|
| 1364 | $context_pattern_id = $m[2]; |
||
| 1365 | $context_table_type = $m[1]; |
||
| 1366 | if (preg_match_all('/((T|V|G)(\_[0-9])+)/', $r, $m)) { |
||
| 1367 | $aliases = $m[1]; |
||
| 1368 | $keep = 1; |
||
| 1369 | foreach ($aliases as $alias) { |
||
| 1370 | if (preg_match('/(T|V|G)_(.*)$/', $alias, $m)) { |
||
| 1371 | $tbl_type = $m[1]; |
||
| 1372 | $tbl = $m[2]; |
||
| 1373 | if (!$this->isJoinedBefore($tbl, $context_pattern_id)) { |
||
| 1374 | $keep = 0; |
||
| 1375 | } elseif (($context_pattern_id == $tbl) && preg_match('/(TV)/', $context_table_type.$tbl_type)) { |
||
| 1376 | $keep = 0; |
||
| 1377 | } |
||
| 1378 | } |
||
| 1379 | } |
||
| 1380 | $r = $keep ? $r : ''; |
||
| 1381 | } |
||
| 1382 | } |
||
| 1383 | |||
| 1384 | 13 | return $r ? '('.$r.')' : $r; |
|
| 1385 | } |
||
| 1386 | |||
| 1387 | 9 | private function detectExpressionValueType($pattern_ids) |
|
| 1388 | { |
||
| 1389 | 9 | foreach ($pattern_ids as $id) { |
|
| 1390 | 9 | $pattern = $this->getPattern($id); |
|
| 1391 | 9 | $type = $pattern['type'] ?? ''; |
|
| 1392 | 9 | if (('literal' == $type) && isset($pattern['datatype'])) { |
|
| 1393 | 5 | $numericDatatypes = [$this->xsd.'integer', $this->xsd.'float', $this->xsd.'double']; |
|
| 1394 | 5 | if (\in_array($pattern['datatype'], $numericDatatypes)) { |
|
| 1395 | 5 | return 'numeric'; |
|
| 1396 | } |
||
| 1397 | } |
||
| 1398 | } |
||
| 1399 | |||
| 1400 | 4 | return ''; |
|
| 1401 | } |
||
| 1402 | |||
| 1403 | 9 | private function getRelationalExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
| 1404 | { |
||
| 1405 | 9 | $r = ''; |
|
| 1406 | 9 | $val_type = $this->detectExpressionValueType($pattern['patterns']); |
|
| 1407 | 9 | $op = $pattern['operator']; |
|
| 1408 | 9 | foreach ($pattern['patterns'] as $sub_id) { |
|
| 1409 | 9 | $sub_pattern = $this->getPattern($sub_id); |
|
| 1410 | 9 | $sub_pattern['parent_op'] = $op; |
|
| 1411 | 9 | $sub_type = $sub_pattern['type']; |
|
| 1412 | 9 | $m = ('built_in_call' == $sub_type) ? 'getBuiltInCallSQL' : 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
| 1413 | 9 | $m = str_replace('ExpressionExpression', 'Expression', $m); |
|
| 1414 | 9 | $sub_r = method_exists($this, $m) ? $this->$m($sub_pattern, $context, $val_type, 'relational') : ''; |
|
| 1415 | 9 | $r .= $r ? ' '.$op.' '.$sub_r : $sub_r; |
|
| 1416 | } |
||
| 1417 | |||
| 1418 | /* |
||
| 1419 | * SQLite related adaption for relational expressions like ?w < 100 |
||
| 1420 | * |
||
| 1421 | * We have to cast the variable behind ?w to a number otherwise we don't get |
||
| 1422 | * meaningful results. |
||
| 1423 | */ |
||
| 1424 | 9 | if ($this->store->getDBObject() instanceof PDOSQLiteAdapter) { |
|
| 1425 | // Regex to catch things like: ?w < 100, ?w > 20 |
||
| 1426 | 9 | $regex = '/([T\_0-9]+\.o_comp)\s*[<>]{1}\s*[0-9]+/si'; |
|
| 1427 | 9 | if (0 < preg_match_all($regex, $r, $matches)) { |
|
| 1428 | 3 | foreach ($matches[1] as $variable) { |
|
| 1429 | 3 | $r = str_replace($variable, 'CAST ('.$variable.' as float)', $r); |
|
| 1430 | } |
||
| 1431 | } |
||
| 1432 | } |
||
| 1433 | |||
| 1434 | 9 | return $r ? '('.$r.')' : $r; |
|
| 1435 | } |
||
| 1436 | |||
| 1437 | private function getAdditiveExpressionSQL($pattern, $context, $val_type = '') |
||
| 1438 | { |
||
| 1439 | $r = ''; |
||
| 1440 | $val_type = $this->detectExpressionValueType($pattern['patterns']); |
||
| 1441 | foreach ($pattern['patterns'] as $sub_id) { |
||
| 1442 | $sub_pattern = $this->getPattern($sub_id); |
||
| 1443 | $sub_type = $sub_pattern['type'] ?? ''; |
||
| 1444 | $m = ('built_in_call' == $sub_type) |
||
| 1445 | ? 'getBuiltInCallSQL' |
||
| 1446 | : 'get'.ucfirst($sub_type).'ExpressionSQL'; |
||
| 1447 | $m = str_replace('ExpressionExpression', 'Expression', $m); |
||
| 1448 | $sub_r = method_exists($this, $m) |
||
| 1449 | ? $this->$m($sub_pattern, $context, $val_type, 'additive') |
||
| 1450 | : ''; |
||
| 1451 | $r .= $r ? ' '.$sub_r : $sub_r; |
||
| 1452 | } |
||
| 1453 | |||
| 1454 | return $r; |
||
| 1455 | } |
||
| 1456 | |||
| 1457 | private function getMultiplicativeExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
||
| 1458 | { |
||
| 1459 | $r = ''; |
||
| 1460 | $val_type = $this->detectExpressionValueType($pattern['patterns']); |
||
| 1461 | foreach ($pattern['patterns'] as $sub_id) { |
||
| 1462 | $sub_pattern = $this->getPattern($sub_id); |
||
| 1463 | $sub_type = $sub_pattern['type']; |
||
| 1464 | $m = ('built_in_call' == $sub_type) |
||
| 1465 | ? 'getBuiltInCallSQL' |
||
| 1466 | : 'get'.ucfirst($sub_type).'ExpressionSQL'; |
||
| 1467 | $m = str_replace('ExpressionExpression', 'Expression', $m); |
||
| 1468 | $sub_r = method_exists($this, $m) |
||
| 1469 | ? $this->$m($sub_pattern, $context, $val_type, 'multiplicative') |
||
| 1470 | : ''; |
||
| 1471 | $r .= $r ? ' '.$sub_r : $sub_r; |
||
| 1472 | } |
||
| 1473 | |||
| 1474 | return $r; |
||
| 1475 | } |
||
| 1476 | |||
| 1477 | 13 | private function getVarExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
| 1478 | { |
||
| 1479 | 13 | $var = $pattern['value']; |
|
| 1480 | 13 | $info = $this->getVarTableInfos($var); |
|
| 1481 | |||
| 1482 | 13 | $tbl = false; |
|
| 1483 | 13 | if (isset($info['table'])) { |
|
| 1484 | 12 | $tbl = $info['table']; |
|
| 1485 | } |
||
| 1486 | |||
| 1487 | 13 | if (!$tbl) { |
|
| 1488 | /* might be an aggregate var */ |
||
| 1489 | 1 | $vars = $this->infos['query']['result_vars']; |
|
| 1490 | 1 | foreach ($vars as $test_var) { |
|
| 1491 | 1 | if ($test_var['alias'] == $pattern['value']) { |
|
| 1492 | 1 | return '`'.$pattern['value'].'`'; |
|
| 1493 | } |
||
| 1494 | } |
||
| 1495 | |||
| 1496 | return ''; |
||
| 1497 | } |
||
| 1498 | 12 | $col = $info['col']; |
|
| 1499 | 12 | $parentOp = $pattern['parent_op'] ?? ''; |
|
| 1500 | 12 | if ('order' == $context && 'o' == $col) { |
|
| 1501 | 3 | $tbl_alias = 'T_'.$tbl.'.o_comp'; |
|
| 1502 | 9 | } elseif ('sameterm' == $context) { |
|
| 1503 | $tbl_alias = 'T_'.$tbl.'.'.$col; |
||
| 1504 | 9 | } elseif ('relational' == $parent_type && 'o' == $col && preg_match('/[\<\>]/', $parentOp)) { |
|
| 1505 | 3 | $tbl_alias = 'T_'.$tbl.'.o_comp'; |
|
| 1506 | } else { |
||
| 1507 | 6 | $tbl_alias = 'V_'.$tbl.'_'.$col.'.val'; |
|
| 1508 | 6 | if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
| 1509 | 6 | $this->index['sub_joins'][] = $tbl_alias; |
|
| 1510 | } |
||
| 1511 | } |
||
| 1512 | |||
| 1513 | 12 | $op = $pattern['operator'] ?? ''; |
|
| 1514 | 12 | if (preg_match('/^(filter|and)/', $parent_type)) { |
|
| 1515 | if ('!' == $op) { |
||
| 1516 | $r = '((('.$tbl_alias.' = 0) AND (CONCAT("1", '.$tbl_alias.') != 1))'; /* 0 and no string */ |
||
| 1517 | $r .= ' OR ('.$tbl_alias.' IN ("", "false")))'; /* or "", or "false" */ |
||
| 1518 | } else { |
||
| 1519 | $r = '(('.$tbl_alias.' != 0)'; /* not null */ |
||
| 1520 | $r .= ' OR ((CONCAT("1", '.$tbl_alias.') = 1) AND ('.$tbl_alias.' NOT IN ("", "false"))))'; /* string, and not "" or "false" */ |
||
| 1521 | } |
||
| 1522 | } else { |
||
| 1523 | 12 | $r = trim($op.' '.$tbl_alias); |
|
| 1524 | 12 | if ('numeric' == $val_type) { |
|
| 1525 | 5 | if (preg_match('/__(T|V|G)_(.+)$/', $context, $m)) { |
|
| 1526 | $context_pattern_id = $m[2]; |
||
| 1527 | $context_table_type = $m[1]; |
||
| 1528 | } else { |
||
| 1529 | 5 | $context_pattern_id = $pattern['id']; |
|
| 1530 | 5 | $context_table_type = 'T'; |
|
| 1531 | } |
||
| 1532 | 5 | if ($this->isJoinedBefore($tbl, $context_pattern_id)) { |
|
| 1533 | 5 | $add = ($tbl != $context_pattern_id) ? 1 : 0; |
|
| 1534 | 5 | $add = (!$add && ('V' == $context_table_type)) ? 1 : 0; |
|
| 1535 | 5 | if ($add) { |
|
| 1536 | $this->addConstraintSQLEntry($context_pattern_id, '('.$r.' = "0" OR '.$r.'*1.0 != 0)'); |
||
| 1537 | } |
||
| 1538 | } |
||
| 1539 | } |
||
| 1540 | } |
||
| 1541 | |||
| 1542 | 12 | return $r; |
|
| 1543 | } |
||
| 1544 | |||
| 1545 | 1 | private function getUriExpressionSQL($pattern) |
|
| 1546 | { |
||
| 1547 | 1 | $val = $pattern['uri']; |
|
| 1548 | 1 | $r = $pattern['operator']; |
|
| 1549 | 1 | $r .= is_numeric($val) ? ' '.$val : ' "'.$this->store->getDBObject()->escape($val).'"'; |
|
| 1550 | |||
| 1551 | 1 | return $r; |
|
| 1552 | } |
||
| 1553 | |||
| 1554 | 12 | private function getLiteralExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
| 1555 | { |
||
| 1556 | 12 | $val = $pattern['value']; |
|
| 1557 | 12 | $r = $pattern['operator']; |
|
| 1558 | 12 | $datatype = $pattern['datatype'] ?? ''; |
|
| 1559 | |||
| 1560 | 12 | if (is_numeric($val) && ($pattern['datatype'] ?? 0)) { |
|
| 1561 | 5 | $r .= ' '.$val; |
|
| 1562 | } elseif ( |
||
| 1563 | 7 | preg_match('/^(true|false)$/i', $val) |
|
| 1564 | 7 | && 'http://www.w3.org/2001/XMLSchema#boolean' == $datatype |
|
| 1565 | ) { |
||
| 1566 | $r .= ' '.strtoupper($val); |
||
| 1567 | 7 | } elseif ('regex' == $parent_type) { |
|
| 1568 | 2 | $sub_r = $this->store->getDBObject()->escape($val); |
|
| 1569 | 2 | $r .= ' "'.preg_replace('/\x5c\x5c/', '\\', $sub_r).'"'; |
|
| 1570 | } else { |
||
| 1571 | 5 | $r .= ' "'.$this->store->getDBObject()->escape($val).'"'; |
|
| 1572 | } |
||
| 1573 | |||
| 1574 | 12 | $lang_dt = $pattern['lang'] ?? $pattern['datatype'] ?? ''; |
|
| 1575 | 12 | if ($lang_dt) { |
|
| 1576 | /* try table/alias via var in siblings */ |
||
| 1577 | 5 | if ($var = $this->findSiblingVarExpression($pattern['id'])) { |
|
| 1578 | 5 | if (isset($this->index['vars'][$var])) { |
|
| 1579 | 5 | $infos = $this->index['vars'][$var]; |
|
| 1580 | 5 | foreach ($infos as $info) { |
|
| 1581 | 5 | if ('o' == $info['col']) { |
|
| 1582 | 5 | $tbl = $info['table']; |
|
| 1583 | 5 | $term_id = $this->getTermID($lang_dt); |
|
| 1584 | 5 | if ('!=' != $pattern['operator']) { |
|
| 1585 | 5 | if (preg_match('/__(T|V|G)_(.+)$/', $context, $m)) { |
|
| 1586 | $context_pattern_id = $m[2]; |
||
| 1587 | $context_table_type = $m[1]; |
||
| 1588 | 5 | } elseif ('where' == $context) { |
|
| 1589 | 5 | $context_pattern_id = $tbl; |
|
| 1590 | } else { |
||
| 1591 | $context_pattern_id = $pattern['id']; |
||
| 1592 | } |
||
| 1593 | // TODO better dependency check |
||
| 1594 | 5 | if ($tbl == $context_pattern_id) { |
|
| 1595 | 5 | if ($term_id || ('http://www.w3.org/2001/XMLSchema#integer' != $lang_dt)) { |
|
| 1596 | /* skip, if simple int, but no id */ |
||
| 1597 | $this->addConstraintSQLEntry($context_pattern_id, 'T_'.$tbl.'.o_lang_dt = '.$term_id.' /* '.preg_replace('/[\#\*\>]/', '::', $lang_dt).' */'); |
||
| 1598 | } |
||
| 1599 | } |
||
| 1600 | } |
||
| 1601 | 5 | break; |
|
| 1602 | } |
||
| 1603 | } |
||
| 1604 | } |
||
| 1605 | } |
||
| 1606 | } |
||
| 1607 | |||
| 1608 | 12 | return trim($r); |
|
| 1609 | } |
||
| 1610 | |||
| 1611 | 5 | private function findSiblingVarExpression($id) |
|
| 1612 | { |
||
| 1613 | 5 | $pattern = $this->getPattern($id); |
|
| 1614 | do { |
||
| 1615 | 5 | $pattern = $this->getPattern($pattern['parent_id']); |
|
| 1616 | 5 | } while ($pattern['parent_id'] && ('expression' != $pattern['type'])); |
|
| 1617 | |||
| 1618 | 5 | $sub_patterns = $pattern['patterns'] ?? []; |
|
| 1619 | 5 | foreach ($sub_patterns as $sub_id) { |
|
| 1620 | 5 | $sub_pattern = $this->getPattern($sub_id); |
|
| 1621 | 5 | if ('var' == $sub_pattern['type']) { |
|
| 1622 | 5 | return $sub_pattern['value']; |
|
| 1623 | } |
||
| 1624 | } |
||
| 1625 | |||
| 1626 | return ''; |
||
| 1627 | } |
||
| 1628 | |||
| 1629 | private function getFunctionExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
||
| 1630 | { |
||
| 1631 | $fnc_uri = $pattern['uri']; |
||
| 1632 | $op = $pattern['operator'] ?? ''; |
||
| 1633 | if ($op) { |
||
| 1634 | $op .= ' '; |
||
| 1635 | } |
||
| 1636 | |||
| 1637 | /* simple type conversions */ |
||
| 1638 | if (0 === strpos($fnc_uri, 'http://www.w3.org/2001/XMLSchema#')) { |
||
| 1639 | return $op.$this->getExpressionSQL($pattern['args'][0], $context, $val_type, $parent_type); |
||
| 1640 | } |
||
| 1641 | |||
| 1642 | return ''; |
||
| 1643 | } |
||
| 1644 | |||
| 1645 | 18 | private function getBuiltInCallSQL($pattern, $context) |
|
| 1646 | { |
||
| 1647 | 18 | $call = $pattern['call']; |
|
| 1648 | 18 | $m = 'get'.ucfirst($call).'CallSQL'; |
|
| 1649 | 18 | if (method_exists($this, $m)) { |
|
| 1650 | 18 | return $this->$m($pattern, $context); |
|
| 1651 | } else { |
||
| 1652 | throw new Exception('Unknown built-in call "'.$call.'"'); |
||
| 1653 | } |
||
| 1654 | |||
| 1655 | return ''; |
||
| 1656 | } |
||
| 1657 | |||
| 1658 | 2 | private function getBoundCallSQL($pattern, $context) |
|
| 1659 | { |
||
| 1660 | 2 | $r = ''; |
|
| 1661 | 2 | $var = $pattern['args'][0]['value']; |
|
| 1662 | 2 | $info = $this->getVarTableInfos($var); |
|
| 1663 | 2 | if (!$tbl = $info['table']) { |
|
| 1664 | return ''; |
||
| 1665 | } |
||
| 1666 | 2 | $col = $info['col']; |
|
| 1667 | 2 | $tbl_alias = 'T_'.$tbl.'.'.$col; |
|
| 1668 | 2 | if ('!' == $pattern['operator']) { |
|
| 1669 | return $tbl_alias.' IS NULL'; |
||
| 1670 | } |
||
| 1671 | |||
| 1672 | 2 | return $tbl_alias.' IS NOT NULL'; |
|
| 1673 | } |
||
| 1674 | |||
| 1675 | 8 | private function getHasTypeCallSQL($pattern, $context, $type) |
|
| 1676 | { |
||
| 1677 | 8 | $r = ''; |
|
| 1678 | 8 | $var = $pattern['args'][0]['value']; |
|
| 1679 | 8 | $info = $this->getVarTableInfos($var); |
|
| 1680 | 8 | if (!$tbl = $info['table']) { |
|
| 1681 | return ''; |
||
| 1682 | } |
||
| 1683 | 8 | $col = $info['col']; |
|
| 1684 | 8 | $tbl_alias = 'T_'.$tbl.'.'.$col.'_type'; |
|
| 1685 | |||
| 1686 | 8 | $operator = $pattern['operator'] ?? ''; |
|
| 1687 | |||
| 1688 | 8 | return $tbl_alias.' '.$operator.'= '.$type; |
|
| 1689 | } |
||
| 1690 | |||
| 1691 | 2 | private function getIsliteralCallSQL($pattern, $context) |
|
| 1692 | { |
||
| 1693 | 2 | return $this->getHasTypeCallSQL($pattern, $context, 2); |
|
| 1694 | } |
||
| 1695 | |||
| 1696 | 2 | private function getIsblankCallSQL($pattern, $context) |
|
| 1699 | } |
||
| 1700 | |||
| 1701 | 2 | private function getIsiriCallSQL($pattern, $context) |
|
| 1702 | { |
||
| 1703 | 2 | return $this->getHasTypeCallSQL($pattern, $context, 0); |
|
| 1704 | } |
||
| 1705 | |||
| 1706 | 2 | private function getIsuriCallSQL($pattern, $context) |
|
| 1707 | { |
||
| 1708 | 2 | return $this->getHasTypeCallSQL($pattern, $context, 0); |
|
| 1709 | } |
||
| 1710 | |||
| 1711 | 2 | private function getStrCallSQL($pattern, $context) |
|
| 1712 | { |
||
| 1713 | 2 | $sub_pattern = $pattern['args'][0]; |
|
| 1718 | } |
||
| 1719 | } |
||
| 1720 | |||
| 1721 | private function getFunctionCallSQL($pattern, $context) |
||
| 1722 | { |
||
| 1723 | $f_uri = $pattern['uri']; |
||
| 1724 | if (preg_match('/(integer|double|float|string)$/', $f_uri)) {/* skip conversions */ |
||
| 1725 | $sub_pattern = $pattern['args'][0]; |
||
| 1726 | $sub_type = $sub_pattern['type']; |
||
| 1727 | $m = 'get'.ucfirst($sub_type).'ExpressionSQL'; |
||
| 1728 | if (method_exists($this, $m)) { |
||
| 1729 | return $this->$m($sub_pattern, $context); |
||
| 1730 | } |
||
| 1731 | } |
||
| 1732 | } |
||
| 1733 | |||
| 1734 | 4 | private function getLangDatatypeCallSQL($pattern, $context) |
|
| 1735 | { |
||
| 1736 | 4 | $r = ''; |
|
| 1737 | /* proceed with first argument only (assumed as base type for type promotion) */ |
||
| 1738 | 4 | if (isset($pattern['patterns'])) { |
|
| 1739 | $sub_pattern = ['args' => [$pattern['patterns'][0]]]; |
||
| 1740 | |||
| 1741 | return $this->getLangDatatypeCallSQL($sub_pattern, $context); |
||
| 1742 | } |
||
| 1743 | 4 | if (!isset($pattern['args'])) { |
|
| 1744 | return 'FALSE'; |
||
| 1745 | } |
||
| 1746 | 4 | $sub_type = $pattern['args'][0]['type']; |
|
| 1747 | 4 | if ('var' != $sub_type) { |
|
| 1748 | return $this->getLangDatatypeCallSQL($pattern['args'][0], $context); |
||
| 1749 | } |
||
| 1750 | 4 | $var = $pattern['args'][0]['value']; |
|
| 1751 | 4 | $info = $this->getVarTableInfos($var); |
|
| 1752 | 4 | if (!$tbl = $info['table']) { |
|
| 1753 | return ''; |
||
| 1754 | } |
||
| 1755 | 4 | $col = 'o_lang_dt'; |
|
| 1756 | 4 | $tbl_alias = 'V_'.$tbl.'_'.$col.'.val'; |
|
| 1757 | 4 | if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
| 1758 | 4 | $this->index['sub_joins'][] = $tbl_alias; |
|
| 1759 | } |
||
| 1760 | 4 | $op = $pattern['operator'] ?? ''; |
|
| 1761 | 4 | $r = trim($op.' '.$tbl_alias); |
|
| 1762 | |||
| 1763 | 4 | return $r; |
|
| 1764 | } |
||
| 1765 | |||
| 1766 | 1 | private function getDatatypeCallSQL($pattern, $context) |
|
| 1767 | { |
||
| 1768 | 1 | return '/* datatype call */ '.$this->getLangDatatypeCallSQL($pattern, $context); |
|
| 1769 | } |
||
| 1770 | |||
| 1771 | 3 | private function getLangCallSQL($pattern, $context) |
|
| 1772 | { |
||
| 1773 | 3 | return '/* language call */ '.$this->getLangDatatypeCallSQL($pattern, $context); |
|
| 1774 | } |
||
| 1775 | |||
| 1776 | 2 | private function getLangmatchesCallSQL($pattern, $context) |
|
| 1777 | { |
||
| 1778 | 2 | if (2 == \count($pattern['args'])) { |
|
| 1779 | 2 | $arg_1 = $pattern['args'][0]; |
|
| 1780 | 2 | $arg_2 = $pattern['args'][1]; |
|
| 1781 | 2 | $sub_r_1 = $this->getBuiltInCallSQL($arg_1, $context); /* adds value join */ |
|
| 1782 | 2 | $sub_r_2 = $this->getExpressionSQL($arg_2, $context); |
|
| 1783 | 2 | $op = $pattern['operator'] ?? ''; |
|
| 1784 | 2 | if (preg_match('/^([\"\'])([^\'\"]+)/', $sub_r_2, $m)) { |
|
| 1785 | if ('*' == $m[2]) { |
||
| 1786 | $r = '!' == $op |
||
| 1787 | ? 'NOT ('.$sub_r_1.' REGEXP "^[a-zA-Z\-]+$"'.')' |
||
| 1788 | : $sub_r_1.' REGEXP "^[a-zA-Z\-]+$"'; |
||
| 1789 | } else { |
||
| 1790 | $r = ('!' == $op) ? $sub_r_1.' NOT LIKE '.$m[1].$m[2].'%'.$m[1] : $sub_r_1.' LIKE '.$m[1].$m[2].'%'.$m[1]; |
||
| 1791 | } |
||
| 1792 | } else { |
||
| 1793 | 2 | $r = ('!' == $op) ? $sub_r_1.' NOT LIKE CONCAT('.$sub_r_2.', "%")' : $sub_r_1.' LIKE CONCAT('.$sub_r_2.', "%")'; |
|
| 1794 | } |
||
| 1795 | |||
| 1796 | 2 | return $r; |
|
| 1797 | } |
||
| 1798 | |||
| 1799 | return ''; |
||
| 1800 | } |
||
| 1801 | |||
| 1802 | /** |
||
| 1803 | * @todo not in use, so remove? |
||
| 1804 | */ |
||
| 1805 | private function getSametermCallSQL($pattern, $context) |
||
| 1806 | { |
||
| 1807 | if (2 == \count($pattern['args'])) { |
||
| 1808 | $arg_1 = $pattern['args'][0]; |
||
| 1809 | $arg_2 = $pattern['args'][1]; |
||
| 1810 | $sub_r_1 = $this->getExpressionSQL($arg_1, 'sameterm'); |
||
| 1811 | $sub_r_2 = $this->getExpressionSQL($arg_2, 'sameterm'); |
||
| 1812 | $op = $pattern['operator'] ?? ''; |
||
| 1813 | $r = $sub_r_1.' '.$op.'= '.$sub_r_2; |
||
| 1814 | |||
| 1815 | return $r; |
||
| 1816 | } |
||
| 1817 | |||
| 1818 | return ''; |
||
| 1819 | } |
||
| 1820 | |||
| 1821 | 2 | private function getRegexCallSQL($pattern, $context) |
|
| 1822 | { |
||
| 1823 | 2 | $ac = \count($pattern['args']); |
|
| 1824 | 2 | if ($ac >= 2) { |
|
| 1825 | 2 | foreach ($pattern['args'] as $i => $arg) { |
|
| 1826 | 2 | $var = 'sub_r_'.($i + 1); |
|
| 1827 | 2 | $$var = $this->getExpressionSQL($arg, $context, '', 'regex'); |
|
| 1828 | } |
||
| 1829 | 2 | $sub_r_3 = (isset($sub_r_3) && preg_match('/[\"\'](.+)[\"\']/', $sub_r_3, $m)) ? strtolower($m[1]) : ''; |
|
| 1830 | 2 | $operator = $pattern['operator'] ?? ''; |
|
| 1831 | 2 | $op = '!' == $operator ? ' NOT' : ''; |
|
| 1832 | 2 | if (!$sub_r_1 || !$sub_r_2) { |
|
| 1833 | return ''; |
||
| 1834 | } |
||
| 1835 | 2 | $is_simple_search = preg_match('/^[\(\"]+(\^)?([a-z0-9\_\-\s]+)(\$)?[\)\"]+$/is', $sub_r_2, $m); |
|
| 1836 | 2 | $is_simple_search = preg_match('/^[\(\"]+(\^)?([^\\\*\[\]\}\{\(\)\"\'\?\+\.]+)(\$)?[\)\"]+$/is', $sub_r_2, $m); |
|
| 1837 | 2 | $is_o_search = preg_match('/o\.val\)*$/', $sub_r_1); |
|
| 1838 | /* fulltext search (may have "|") */ |
||
| 1839 | 2 | if ($is_simple_search && $is_o_search && !$op && (\strlen($m[2]) > 8)) { |
|
| 1840 | /* MATCH variations */ |
||
| 1841 | if (($val_parts = preg_split('/\|/', $m[2]))) { |
||
| 1842 | return 'MATCH('.trim($sub_r_1, '()').') AGAINST("'.implode(' ', $val_parts).'")'; |
||
| 1843 | } else { |
||
| 1844 | return 'MATCH('.trim($sub_r_1, '()').') AGAINST("'.$m[2].'")'; |
||
| 1845 | } |
||
| 1846 | } |
||
| 1847 | 2 | if (preg_match('/\|/', $sub_r_2)) { |
|
| 1848 | $is_simple_search = 0; |
||
| 1849 | } |
||
| 1850 | /* LIKE */ |
||
| 1851 | 2 | if ($is_simple_search && ('i' == $sub_r_3)) { |
|
| 1852 | 1 | $sub_r_2 = $m[1] ? $m[2] : '%'.$m[2]; |
|
| 1853 | 1 | $sub_r_2 .= isset($m[3]) && $m[3] ? '' : '%'; |
|
| 1854 | |||
| 1855 | 1 | return $sub_r_1.$op.' LIKE "'.$sub_r_2.'"'; |
|
| 1856 | } |
||
| 1857 | /* REGEXP */ |
||
| 1858 | 1 | $opt = ''; |
|
| 1859 | 1 | if (!$this->store->getDBObject() instanceof PDOSQLiteAdapter) { |
|
| 1860 | $opt = ('i' == $sub_r_3) ? '' : 'BINARY '; |
||
| 1861 | } |
||
| 1862 | |||
| 1863 | 1 | return $sub_r_1.$op.' REGEXP '.$opt.$sub_r_2; |
|
| 1864 | } |
||
| 1865 | |||
| 1866 | return ''; |
||
| 1867 | } |
||
| 1868 | |||
| 1869 | 92 | private function getGROUPSQL() |
|
| 1870 | { |
||
| 1871 | 92 | $r = ''; |
|
| 1872 | 92 | $nl = "\n"; |
|
| 1873 | 92 | $infos = $this->infos['query']['group_infos'] ?? []; |
|
| 1874 | 92 | foreach ($infos as $info) { |
|
| 1875 | 7 | $var = $info['value']; |
|
| 1876 | 7 | if ($tbl_infos = $this->getVarTableInfos($var, 0)) { |
|
| 1877 | 7 | $tbl_alias = $tbl_infos['table_alias']; |
|
| 1878 | 7 | $r .= $r ? ', ' : 'GROUP BY '; |
|
| 1879 | 7 | $r .= $tbl_alias; |
|
| 1880 | } |
||
| 1881 | } |
||
| 1882 | 92 | $hr = ''; |
|
| 1883 | 92 | foreach ($this->index['havings'] as $having) { |
|
| 1884 | $hr .= $hr ? ' AND' : ' HAVING'; |
||
| 1885 | $hr .= '('.$having.')'; |
||
| 1886 | } |
||
| 1887 | 92 | $r .= $hr; |
|
| 1888 | |||
| 1889 | 92 | return $r ? $nl.$r : $r; |
|
| 1890 | } |
||
| 1891 | |||
| 1892 | 92 | private function getORDERSQL() |
|
| 1914 | } |
||
| 1915 | |||
| 1916 | 92 | private function getLIMITSQL() |
|
| 1917 | { |
||
| 1918 | 92 | $r = ''; |
|
| 1930 | } |
||
| 1931 | |||
| 1932 | 89 | private function getValueSQL($q_tbl, $q_sql) |
|
| 1933 | { |
||
| 1934 | 89 | $r = ''; |
|
| 1935 | /* result vars */ |
||
| 1936 | 89 | $vars = $this->infos['query']['result_vars']; |
|
| 1937 | 89 | $nl = "\n"; |
|
| 1938 | 89 | $v_tbls = ['JOIN' => [], 'LEFT JOIN' => []]; |
|
| 1939 | 89 | $vc = 1; |
|
| 1940 | 89 | foreach ($vars as $var) { |
|
| 1941 | 89 | $var_name = $var['var']; |
|
| 1942 | 89 | $r .= $r ? ','.$nl.' ' : ' '; |
|
| 1943 | 89 | $col = ''; |
|
| 1944 | 89 | $tbl = ''; |
|
| 1945 | 89 | if ('*' != $var_name) { |
|
| 1946 | 88 | if (\in_array($var_name, $this->infos['null_vars'])) { |
|
| 1947 | if (isset($this->initial_index['vars'][$var_name])) { |
||
| 1948 | $col = $this->initial_index['vars'][$var_name][0]['col']; |
||
| 1949 | $tbl = $this->initial_index['vars'][$var_name][0]['table']; |
||
| 1950 | } |
||
| 1951 | if (isset($this->initial_index['graph_vars'][$var_name])) { |
||
| 1952 | $col = 'g'; |
||
| 1953 | $tbl = $this->initial_index['graph_vars'][$var_name][0]['table']; |
||
| 1954 | } |
||
| 1955 | 88 | } elseif (isset($this->index['vars'][$var_name])) { |
|
| 2012 | } |
||
| 2013 | } |
||
| 2014 |
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