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<?php |
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/* |
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* This file is part of the sweetrdf/InMemoryStoreSqlite package and licensed under |
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* the terms of the GPL-3 license. |
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* |
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* (c) Konrad Abicht <[email protected]> |
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* (c) Benjamin Nowack |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace sweetrdf\InMemoryStoreSqlite\Store\QueryHandler; |
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use Exception; |
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use sweetrdf\InMemoryStoreSqlite\PDOSQLiteAdapter; |
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class SelectQueryHandler extends QueryHandler |
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{ |
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102 |
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public function runQuery($infos) |
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{ |
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$this->infos = $infos; |
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102 |
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$this->infos['null_vars'] = []; |
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102 |
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$this->indexes = []; |
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102 |
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$this->pattern_order_offset = 0; |
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102 |
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$q_sql = $this->getSQL(); |
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/* create intermediate results (ID-based) */ |
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$tmp_tbl = $this->createTempTable($q_sql); |
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/* join values */ |
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$r = $this->getFinalQueryResult($q_sql, $tmp_tbl); |
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/* remove intermediate results */ |
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$this->store->getDBObject()->simpleQuery('DROP TABLE IF EXISTS '.$tmp_tbl); |
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return $r; |
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} |
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102 |
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public function getSQL() |
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{ |
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$r = ''; |
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$nl = "\n"; |
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102 |
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$this->buildInitialIndexes(); |
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foreach ($this->indexes as $i => $index) { |
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$this->index = array_merge($this->getEmptyIndex(), $index); |
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$this->analyzeIndex($this->getPattern('0')); |
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$sub_r = $this->getQuerySQL(); |
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$r .= $r ? $nl.'UNION'.$this->getDistinctSQL().$nl : ''; |
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$setBracket = $this->is_union_query && !$this->store->getDBObject() instanceof PDOSQLiteAdapter; |
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$r .= $setBracket ? '('.$sub_r.')' : $sub_r; |
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$this->indexes[$i] = $this->index; |
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} |
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$r .= $this->is_union_query ? $this->getLIMITSQL() : ''; |
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$orderInfos = $this->infos['query']['order_infos'] ?? 0; |
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if ($orderInfos) { |
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$r = preg_replace('/SELECT(\s+DISTINCT)?\s*/', 'SELECT\\1 NULL AS `TMPPOS`, ', $r); |
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} |
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102 |
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$pd_count = $this->problematicDependencies(); |
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if ($pd_count) { |
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/* re-arranging the patterns sometimes reduces the LEFT JOIN dependencies */ |
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$set_sql = 0; |
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if (!$this->pattern_order_offset) { |
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$set_sql = 1; |
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} |
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if (!$set_sql && ($pd_count < $this->opt_sql_pd_count)) { |
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$set_sql = 1; |
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} |
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if (!$set_sql && ($pd_count == $this->opt_sql_pd_count) && (\strlen($r) < \strlen($this->opt_sql))) { |
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$set_sql = 1; |
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} |
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if ($set_sql) { |
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$this->opt_sql = $r; |
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$this->opt_sql_pd_count = $pd_count; |
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} |
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++$this->pattern_order_offset; |
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if ($this->pattern_order_offset > 5) { |
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return $this->opt_sql; |
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} |
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return $this->getSQL(); |
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} |
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return $r; |
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} |
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102 |
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public function buildInitialIndexes() |
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{ |
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$this->dependency_log = []; |
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$this->index = $this->getEmptyIndex(); |
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// if no pattern is in the query, the index "pattern" is undefined, which leads to an error. |
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// TODO throw an exception/raise an error and avoid "Undefined index: pattern" notification |
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$this->buildIndex($this->infos['query']['pattern'], 0); |
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$tmp = $this->index; |
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$this->analyzeIndex($this->getPattern('0')); |
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$this->initial_index = $this->index; |
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$this->index = $tmp; |
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$this->is_union_query = $this->index['union_branches'] ? 1 : 0; |
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$this->indexes = $this->is_union_query ? $this->getUnionIndexes($this->index) : [$this->index]; |
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} |
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private function createTempTable($q_sql) |
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{ |
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$tbl = 'Q'.md5($q_sql.time().uniqid(rand())); |
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if (\strlen($tbl) > 64) { |
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$tbl = 'Q'.md5($tbl); |
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} |
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$tmp_sql = 'CREATE TABLE '.$tbl.' ( '.$this->getTempTableDefForSQLite($q_sql).')'; |
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$tmpSql2 = str_replace('CREATE TEMPORARY', 'CREATE', $tmp_sql); |
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if ( |
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!$this->store->getDBObject()->simpleQuery($tmp_sql) |
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&& !$this->store->getDBObject()->simpleQuery($tmpSql2) |
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&& !empty($this->store->getDBObject()->getErrorMessage()) |
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) { |
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return $this->store->getLogger()->error( |
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$this->store->getDBObject()->getErrorMessage() |
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); |
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} |
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if (false === $this->store->getDBObject()->exec('INSERT INTO '.$tbl.' '."\n".$q_sql)) { |
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$this->store->getLogger()->error($this->store->getDBObject()->getErrorMessage()); |
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} |
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return $tbl; |
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} |
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private function getEmptyIndex() |
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{ |
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return [ |
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'from' => [], |
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'join' => [], |
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'left_join' => [], |
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'vars' => [], 'graph_vars' => [], 'graph_uris' => [], |
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'bnodes' => [], |
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'triple_patterns' => [], |
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'sub_joins' => [], |
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'constraints' => [], |
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'union_branches' => [], |
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'patterns' => [], |
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'havings' => [], |
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]; |
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} |
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public function getTempTableDefForSQLite($q_sql) |
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{ |
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$col_part = preg_replace('/^SELECT\s*(DISTINCT)?(.*)FROM.*$/s', '\\2', $q_sql); |
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$parts = explode(',', $col_part); |
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$has_order_infos = $this->infos['query']['order_infos'] ?? 0; |
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$r = ''; |
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$added = []; |
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foreach ($parts as $part) { |
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if (preg_match('/\.?(.+)\s+AS\s+`(.+)`/U', trim($part), $m) && !isset($added[$m[2]])) { |
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$alias = $m[2]; |
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if ('TMPPOS' == $alias) { |
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continue; |
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} |
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$r .= $r ? ',' : ''; |
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$r .= "\n `".$alias.'` INTEGER UNSIGNED'; |
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$added[$alias] = 1; |
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} |
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} |
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if ($has_order_infos) { |
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$r = "\n".'`TMPPOS` INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, '.$r; |
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} |
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return $r ? $r."\n" : ''; |
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} |
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public function getFinalQueryResult($q_sql, $tmp_tbl) |
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{ |
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/* var names */ |
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$vars = []; |
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$aggregate_vars = []; |
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foreach ($this->infos['query']['result_vars'] as $entry) { |
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if ($entry['aggregate']) { |
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$vars[] = $entry['alias']; |
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$aggregate_vars[] = $entry['alias']; |
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} else { |
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$vars[] = $entry['var']; |
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} |
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} |
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/* result */ |
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$r = ['variables' => $vars]; |
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$v_sql = $this->getValueSQL($tmp_tbl, $q_sql); |
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$entries = []; |
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try { |
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$entries = $this->store->getDBObject()->fetchList($v_sql); |
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} catch (\Exception $e) { |
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$this->store->getLogger()->error($e->getMessage()); |
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} |
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$rows = []; |
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$types = [0 => 'uri', 1 => 'bnode', 2 => 'literal']; |
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if (0 < \count($entries)) { |
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foreach ($entries as $pre_row) { |
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$row = []; |
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foreach ($vars as $var) { |
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if (isset($pre_row[$var])) { |
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$row[$var] = $pre_row[$var]; |
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$row[$var.' type'] = isset($pre_row[$var.' type']) |
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? $types[$pre_row[$var.' type']] |
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: ( |
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\in_array($var, $aggregate_vars) |
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? 'literal' |
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: 'uri' |
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); |
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if ( |
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isset($pre_row[$var.' lang_dt']) |
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&& ($lang_dt = $pre_row[$var.' lang_dt']) |
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) { |
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if (preg_match('/^([a-z]+(\-[a-z0-9]+)*)$/i', $lang_dt)) { |
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$row[$var.' lang'] = $lang_dt; |
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} else { |
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$row[$var.' datatype'] = $lang_dt; |
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} |
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} |
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} |
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} |
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if ($row || !$vars) { |
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$rows[] = $row; |
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} |
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} |
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} |
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$r['rows'] = $rows; |
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return $r; |
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} |
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public function buildIndex($pattern, $id) |
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{ |
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$pattern['id'] = $id; |
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$type = $pattern['type'] ?? ''; |
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$constraint = $pattern['constraint'] ?? 0; |
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if ('filter' == $type && $constraint) { |
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$sub_pattern = $pattern['constraint']; |
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$sub_pattern['parent_id'] = $id; |
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$sub_id = $id.'_0'; |
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$this->buildIndex($sub_pattern, $sub_id); |
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$pattern['constraint'] = $sub_id; |
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} else { |
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$sub_patterns = $pattern['patterns'] ?? []; |
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$keys = array_keys($sub_patterns); |
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$spc = \count($sub_patterns); |
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if ($spc > 4 && $this->pattern_order_offset) { |
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$keys = []; |
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for ($i = 0; $i < $spc; ++$i) { |
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$keys[$i] = $i + $this->pattern_order_offset; |
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while ($keys[$i] >= $spc) { |
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$keys[$i] -= $spc; |
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} |
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} |
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} |
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foreach ($keys as $i => $key) { |
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$sub_pattern = $sub_patterns[$key]; |
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$sub_pattern['parent_id'] = $id; |
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$sub_id = $id.'_'.$key; |
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$this->buildIndex($sub_pattern, $sub_id); |
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$pattern['patterns'][$i] = $sub_id; |
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if ('union' == $type) { |
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$this->index['union_branches'][] = $sub_id; |
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} |
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} |
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} |
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$this->index['patterns'][$id] = $pattern; |
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} |
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102 |
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public function analyzeIndex($pattern) |
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{ |
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102 |
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$type = $pattern['type'] ?? ''; |
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102 |
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if (!$type) { |
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return false; |
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} |
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102 |
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$type = $pattern['type']; |
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102 |
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$id = $pattern['id']; |
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/* triple */ |
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102 |
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if ('triple' == $type) { |
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102 |
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foreach (['s', 'p', 'o'] as $term) { |
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102 |
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if ('var' == $pattern[$term.'_type']) { |
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102 |
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$val = $pattern[$term]; |
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102 |
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$this->index['vars'][$val] = array_merge( |
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102 |
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$this->index['vars'][$val] ?? [], |
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[['table' => $pattern['id'], 'col' => $term]] |
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); |
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} |
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102 |
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if ('bnode' == $pattern[$term.'_type']) { |
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$val = $pattern[$term]; |
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$this->index['bnodes'][$val] = array_merge( |
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|
11 |
|
$this->index['bnodes'][$val] ?? [], |
|
294
|
11 |
|
[['table' => $pattern['id'], 'col' => $term]] |
|
295
|
|
|
); |
|
296
|
|
|
} |
|
297
|
|
|
} |
|
298
|
102 |
|
$this->index['triple_patterns'][] = $pattern['id']; |
|
299
|
|
|
/* joins */ |
|
300
|
102 |
|
if ($this->isOptionalPattern($id)) { |
|
301
|
2 |
|
$this->index['left_join'][] = $id; |
|
302
|
102 |
|
} elseif (!$this->index['from']) { |
|
303
|
102 |
|
$this->index['from'][] = $id; |
|
304
|
14 |
|
} elseif (!$this->getJoinInfos($id)) { |
|
305
|
|
|
$this->index['from'][] = $id; |
|
306
|
|
|
} else { |
|
307
|
14 |
|
$this->index['join'][] = $id; |
|
308
|
|
|
} |
|
309
|
|
|
/* graph infos, graph vars */ |
|
310
|
102 |
|
$this->index['patterns'][$id]['graph_infos'] = $this->getGraphInfos($id); |
|
311
|
102 |
|
foreach ($this->index['patterns'][$id]['graph_infos'] as $info) { |
|
312
|
49 |
|
if ('graph' == $info['type']) { |
|
313
|
|
|
if ($info['var']) { |
|
314
|
|
|
$val = $info['var']['value']; |
|
315
|
|
|
$this->index['graph_vars'][$val] = array_merge( |
|
316
|
|
|
$this->index['graph_vars'][$val] ?? [], |
|
317
|
|
|
[['table' => $id]] |
|
318
|
|
|
); |
|
319
|
|
|
} elseif ($info['uri']) { |
|
320
|
|
|
$val = $info['uri']; |
|
321
|
|
|
$this->index['graph_uris'][$val] = array_merge( |
|
322
|
|
|
$this->index['graph_uris'][$val] ?? [], |
|
323
|
|
|
[['table' => $id]] |
|
324
|
|
|
); |
|
325
|
|
|
} |
|
326
|
|
|
} |
|
327
|
|
|
} |
|
328
|
|
|
} |
|
329
|
102 |
|
$sub_ids = $pattern['patterns'] ?? []; |
|
330
|
102 |
|
foreach ($sub_ids as $sub_id) { |
|
331
|
102 |
|
$this->analyzeIndex($this->getPattern($sub_id)); |
|
332
|
|
|
} |
|
333
|
102 |
|
} |
|
334
|
|
|
|
|
335
|
102 |
|
public function getGraphInfos($id) |
|
336
|
|
|
{ |
|
337
|
102 |
|
$r = []; |
|
338
|
102 |
|
if ($id) { |
|
339
|
102 |
|
$pattern = $this->index['patterns'][$id]; |
|
340
|
102 |
|
$type = $pattern['type']; |
|
341
|
|
|
/* graph */ |
|
342
|
102 |
|
if ('graph' == $type) { |
|
343
|
|
|
$r[] = ['type' => 'graph', 'var' => $pattern['var'], 'uri' => $pattern['uri']]; |
|
344
|
|
|
} |
|
345
|
102 |
|
$p_pattern = $this->index['patterns'][$pattern['parent_id']]; |
|
346
|
102 |
|
if (isset($p_pattern['graph_infos'])) { |
|
347
|
|
|
return array_merge($p_pattern['graph_infos'], $r); |
|
348
|
|
|
} |
|
349
|
|
|
|
|
350
|
102 |
|
return array_merge($this->getGraphInfos($pattern['parent_id']), $r); |
|
351
|
|
|
} else { |
|
352
|
|
|
/* FROM / FROM NAMED */ |
|
353
|
102 |
|
if (isset($this->infos['query']['dataset'])) { |
|
354
|
102 |
|
foreach ($this->infos['query']['dataset'] as $set) { |
|
355
|
49 |
|
$r[] = array_merge(['type' => 'dataset'], $set); |
|
356
|
|
|
} |
|
357
|
|
|
} |
|
358
|
|
|
} |
|
359
|
|
|
|
|
360
|
102 |
|
return $r; |
|
361
|
|
|
} |
|
362
|
|
|
|
|
363
|
102 |
|
public function getPattern($id): array |
|
364
|
|
|
{ |
|
365
|
102 |
|
if (\is_array($id)) { |
|
366
|
|
|
return $id; |
|
367
|
|
|
} |
|
368
|
|
|
|
|
369
|
102 |
|
return $this->index['patterns'][$id] ?? []; |
|
370
|
|
|
} |
|
371
|
|
|
|
|
372
|
|
|
public function getInitialPattern($id): array |
|
373
|
|
|
{ |
|
374
|
|
|
return $this->initial_index['patterns'][$id] ?? []; |
|
375
|
|
|
} |
|
376
|
|
|
|
|
377
|
1 |
|
public function getUnionIndexes($pre_index) |
|
378
|
|
|
{ |
|
379
|
1 |
|
$r = []; |
|
380
|
1 |
|
$branches = []; |
|
381
|
1 |
|
$min_depth = 1000; |
|
382
|
|
|
/* only process branches with minimum depth */ |
|
383
|
1 |
|
foreach ($pre_index['union_branches'] as $id) { |
|
384
|
1 |
|
$branches[$id] = \count(preg_split('/\_/', $id)); |
|
385
|
1 |
|
$min_depth = min($min_depth, $branches[$id]); |
|
386
|
|
|
} |
|
387
|
1 |
|
foreach ($branches as $branch_id => $depth) { |
|
388
|
1 |
|
if ($depth == $min_depth) { |
|
389
|
1 |
|
$union_id = preg_replace('/\_[0-9]+$/', '', $branch_id); |
|
390
|
1 |
|
$index = [ |
|
391
|
1 |
|
'keeping' => $branch_id, |
|
392
|
|
|
'union_branches' => [], |
|
393
|
1 |
|
'patterns' => $pre_index['patterns'], |
|
394
|
|
|
]; |
|
395
|
1 |
|
$old_branches = $index['patterns'][$union_id]['patterns']; |
|
396
|
1 |
|
$skip_id = ($old_branches[0] == $branch_id) ? $old_branches[1] : $old_branches[0]; |
|
397
|
1 |
|
$index['patterns'][$union_id]['type'] = 'group'; |
|
398
|
1 |
|
$index['patterns'][$union_id]['patterns'] = [$branch_id]; |
|
399
|
1 |
|
foreach ($index['patterns'] as $pattern_id => $pattern) { |
|
400
|
1 |
|
if (preg_match('/^'.$skip_id.'/', $pattern_id)) { |
|
401
|
1 |
|
unset($index['patterns'][$pattern_id]); |
|
402
|
1 |
|
} elseif ('union' == $pattern['type']) { |
|
403
|
|
|
foreach ($pattern['patterns'] as $sub_union_branch_id) { |
|
404
|
|
|
$index['union_branches'][] = $sub_union_branch_id; |
|
405
|
|
|
} |
|
406
|
|
|
} |
|
407
|
|
|
} |
|
408
|
1 |
|
if ($index['union_branches']) { |
|
409
|
|
|
$r = array_merge($r, $this->getUnionIndexes($index)); |
|
410
|
|
|
} else { |
|
411
|
1 |
|
$r[] = $index; |
|
412
|
|
|
} |
|
413
|
|
|
} |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
1 |
|
return $r; |
|
417
|
|
|
} |
|
418
|
|
|
|
|
419
|
102 |
|
public function isOptionalPattern($id) |
|
420
|
|
|
{ |
|
421
|
102 |
|
$pattern = $this->getPattern($id); |
|
422
|
102 |
|
$type = $pattern['type'] ?? ''; |
|
423
|
102 |
|
if ('optional' == $type) { |
|
424
|
2 |
|
return 1; |
|
425
|
|
|
} |
|
426
|
|
|
|
|
427
|
102 |
|
$parentId = $pattern['parent_id'] ?? '0'; |
|
428
|
102 |
|
if ('0' == $parentId) { |
|
429
|
102 |
|
return 0; |
|
430
|
|
|
} |
|
431
|
|
|
|
|
432
|
102 |
|
return $this->isOptionalPattern($pattern['parent_id']); |
|
433
|
|
|
} |
|
434
|
|
|
|
|
435
|
15 |
|
public function getOptionalPattern($id) |
|
436
|
|
|
{ |
|
437
|
15 |
|
$pn = $this->getPattern($id); |
|
438
|
|
|
do { |
|
439
|
15 |
|
$pn = $this->getPattern($pn['parent_id']); |
|
440
|
15 |
|
} while ($pn['parent_id'] && ('optional' != $pn['type'])); |
|
441
|
|
|
|
|
442
|
15 |
|
return $pn['id']; |
|
443
|
|
|
} |
|
444
|
|
|
|
|
445
|
2 |
|
public function sameOptional($id, $id2) |
|
446
|
|
|
{ |
|
447
|
2 |
|
return $this->getOptionalPattern($id) == $this->getOptionalPattern($id2); |
|
448
|
|
|
} |
|
449
|
|
|
|
|
450
|
|
|
public function isUnionPattern($id) |
|
451
|
|
|
{ |
|
452
|
|
|
$pattern = $this->getPattern($id); |
|
453
|
|
|
|
|
454
|
|
|
$type = $pattern['type'] ?? ''; |
|
455
|
|
|
if ('union' == $type) { |
|
456
|
|
|
return 1; |
|
457
|
|
|
} |
|
458
|
|
|
|
|
459
|
|
|
$parentId = $pattern['parent_id'] ?? '0'; |
|
460
|
|
|
if ('0' == $parentId) { |
|
461
|
|
|
return 0; |
|
462
|
|
|
} |
|
463
|
|
|
|
|
464
|
|
|
return $this->isUnionPattern($parentId); |
|
465
|
|
|
} |
|
466
|
|
|
|
|
467
|
99 |
|
public function getValueTable($col) |
|
468
|
|
|
{ |
|
469
|
99 |
|
return preg_match('/^(s|o)$/', $col) ? $col.'2val' : 'id2val'; |
|
470
|
|
|
} |
|
471
|
|
|
|
|
472
|
49 |
|
public function getGraphTable() |
|
473
|
|
|
{ |
|
474
|
49 |
|
return 'g2t'; |
|
475
|
|
|
} |
|
476
|
|
|
|
|
477
|
102 |
|
public function getQuerySQL() |
|
478
|
|
|
{ |
|
479
|
102 |
|
$nl = "\n"; |
|
480
|
102 |
|
$where_sql = $this->getWHERESQL(); /* pre-fills $index['sub_joins'] $index['constraints'] */ |
|
|
|
|
|
|
481
|
102 |
|
$order_sql = $this->getORDERSQL(); /* pre-fills $index['sub_joins'] $index['constraints'] */ |
|
|
|
|
|
|
482
|
|
|
|
|
483
|
|
|
return ''.( |
|
484
|
102 |
|
$this->is_union_query |
|
485
|
1 |
|
? 'SELECT' |
|
486
|
102 |
|
: 'SELECT'.$this->getDistinctSQL()).$nl. |
|
487
|
102 |
|
$this->getResultVarsSQL().$nl. /* fills $index['sub_joins'] */ |
|
488
|
102 |
|
$this->getFROMSQL(). |
|
489
|
102 |
|
$this->getAllJoinsSQL(). |
|
490
|
102 |
|
$this->getWHERESQL(). |
|
491
|
102 |
|
$this->getGROUPSQL(). |
|
492
|
102 |
|
$this->getORDERSQL(). |
|
493
|
102 |
|
($this->is_union_query |
|
494
|
1 |
|
? '' |
|
495
|
102 |
|
: $this->getLIMITSQL() |
|
496
|
102 |
|
).$nl.''; |
|
497
|
|
|
} |
|
498
|
|
|
|
|
499
|
102 |
|
public function getDistinctSQL() |
|
500
|
|
|
{ |
|
501
|
102 |
|
$distinct = $this->infos['query']['distinct'] ?? 0; |
|
502
|
102 |
|
$reduced = $this->infos['query']['reduced'] ?? 0; |
|
503
|
|
|
|
|
504
|
102 |
|
$check = $distinct || $reduced; |
|
505
|
102 |
|
if ($this->is_union_query) { |
|
506
|
1 |
|
return $check ? '' : ' ALL'; |
|
507
|
|
|
} |
|
508
|
|
|
|
|
509
|
101 |
|
return $check ? ' DISTINCT' : ''; |
|
510
|
|
|
} |
|
511
|
|
|
|
|
512
|
102 |
|
public function getResultVarsSQL() |
|
513
|
|
|
{ |
|
514
|
102 |
|
$r = ''; |
|
515
|
102 |
|
$vars = $this->infos['query']['result_vars']; |
|
516
|
102 |
|
$nl = "\n"; |
|
517
|
102 |
|
$added = []; |
|
518
|
102 |
|
foreach ($vars as $var) { |
|
519
|
102 |
|
$var_name = $var['var']; |
|
520
|
102 |
|
$tbl_alias = ''; |
|
521
|
102 |
|
if ($tbl_infos = $this->getVarTableInfos($var_name, 0)) { |
|
522
|
100 |
|
$tbl = $tbl_infos['table']; |
|
523
|
100 |
|
$col = $tbl_infos['col']; |
|
524
|
100 |
|
$tbl_alias = $tbl_infos['table_alias']; |
|
525
|
3 |
|
} elseif (1 == $var_name) {/* ASK query */ |
|
526
|
2 |
|
$r .= '1 AS `success`'; |
|
527
|
|
|
} else { |
|
528
|
1 |
|
$msg = 'Result variable "'.$var_name.'" not used in query.'; |
|
529
|
1 |
|
$this->store->getLogger()->warning($msg); |
|
530
|
|
|
} |
|
531
|
|
|
|
|
532
|
102 |
|
if ($tbl_alias) { |
|
533
|
|
|
/* aggregate */ |
|
534
|
100 |
|
if ($var['aggregate']) { |
|
535
|
10 |
|
$conv_code = ''; |
|
536
|
10 |
|
if ('count' != strtolower($var['aggregate'])) { |
|
537
|
2 |
|
$tbl_alias = 'V_'.$tbl.'_'.$col.'.val'; |
|
|
|
|
|
|
538
|
2 |
|
$conv_code = '0 + '; |
|
539
|
|
|
} |
|
540
|
10 |
|
if (!isset($added[$var['alias']])) { |
|
541
|
10 |
|
$r .= $r ? ','.$nl.' ' : ' '; |
|
542
|
|
|
|
|
543
|
10 |
|
$distinct = $this->infos['query']['distinct'] ?? 0; |
|
544
|
10 |
|
$distinct_code = ('count' == strtolower($var['aggregate'])) |
|
545
|
10 |
|
&& $distinct ? 'DISTINCT ' : ''; |
|
546
|
|
|
|
|
547
|
10 |
|
$r .= $var['aggregate'] |
|
548
|
10 |
|
.'('.$conv_code.$distinct_code.$tbl_alias.') AS `'.$var['alias'].'`'; |
|
549
|
10 |
|
$added[$var['alias']] = 1; |
|
550
|
|
|
} |
|
551
|
|
|
} else { |
|
552
|
|
|
/* normal var */ |
|
553
|
99 |
|
if (!isset($added[$var_name])) { |
|
554
|
99 |
|
$r .= $r ? ','.$nl.' ' : ' '; |
|
555
|
99 |
|
$r .= $tbl_alias.' AS `'.$var_name.'`'; |
|
556
|
99 |
|
$is_s = ('s' == $col); |
|
557
|
99 |
|
$is_o = ('o' == $col); |
|
558
|
99 |
|
if ('NULL' == $tbl_alias) { |
|
559
|
|
|
/* type / add in UNION queries? */ |
|
560
|
|
|
if ($is_s || $is_o) { |
|
561
|
|
|
$r .= ', '.$nl.' NULL AS `'.$var_name.' type`'; |
|
562
|
|
|
} |
|
563
|
|
|
/* lang_dt / always add it in UNION queries, the var may be used as s/p/o */ |
|
564
|
|
|
if ($is_o || $this->is_union_query) { |
|
565
|
|
|
$r .= ', '.$nl.' NULL AS `'.$var_name.' lang_dt`'; |
|
566
|
|
|
} |
|
567
|
|
|
} else { |
|
568
|
|
|
/* type */ |
|
569
|
99 |
|
if ($is_s || $is_o) { |
|
570
|
97 |
|
$r .= ', '.$nl.' '.$tbl_alias.'_type AS `'.$var_name.' type`'; |
|
571
|
|
|
} |
|
572
|
|
|
/* lang_dt / always add it in UNION queries, the var may be used as s/p/o */ |
|
573
|
99 |
|
if ($is_o) { |
|
574
|
89 |
|
$r .= ', '.$nl.' '.$tbl_alias.'_lang_dt AS `'.$var_name.' lang_dt`'; |
|
575
|
73 |
|
} elseif ($this->is_union_query) { |
|
576
|
1 |
|
$r .= ', '.$nl.' NULL AS `'.$var_name.' lang_dt`'; |
|
577
|
|
|
} |
|
578
|
|
|
} |
|
579
|
99 |
|
$added[$var_name] = 1; |
|
580
|
|
|
} |
|
581
|
|
|
} |
|
582
|
100 |
|
if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
583
|
100 |
|
$this->index['sub_joins'][] = $tbl_alias; |
|
|
|
|
|
|
584
|
|
|
} |
|
585
|
|
|
} |
|
586
|
|
|
} |
|
587
|
|
|
|
|
588
|
102 |
|
return $r ? $r : '1 AS `success`'; |
|
589
|
|
|
} |
|
590
|
|
|
|
|
591
|
102 |
|
public function getVarTableInfos($var, $ignore_initial_index = 1) |
|
592
|
|
|
{ |
|
593
|
102 |
|
if ('*' == $var) { |
|
594
|
2 |
|
return ['table' => '', 'col' => '', 'table_alias' => '*']; |
|
595
|
|
|
} |
|
596
|
102 |
|
if ($infos = $this->index['vars'][$var] ?? 0) { |
|
597
|
100 |
|
$infos[0]['table_alias'] = 'T_'.$infos[0]['table'].'.'.$infos[0]['col']; |
|
598
|
|
|
|
|
599
|
100 |
|
return $infos[0]; |
|
600
|
|
|
} |
|
601
|
4 |
|
if ($infos = $this->index['graph_vars'][$var] ?? 0) { |
|
602
|
|
|
$infos[0]['col'] = 'g'; |
|
603
|
|
|
$infos[0]['table_alias'] = 'G_'.$infos[0]['table'].'.'.$infos[0]['col']; |
|
604
|
|
|
|
|
605
|
|
|
return $infos[0]; |
|
606
|
|
|
} |
|
607
|
4 |
|
if ($this->is_union_query && !$ignore_initial_index) { |
|
608
|
|
|
if ( |
|
609
|
|
|
($infos = $this->initial_index['vars'][$var] ?? 0) |
|
610
|
|
|
|| ($infos = $this->initial_index['graph_vars'][$var] ?? 0) |
|
611
|
|
|
) { |
|
612
|
|
|
if (!\in_array($var, $this->infos['null_vars'])) { |
|
613
|
|
|
$this->infos['null_vars'][] = $var; |
|
|
|
|
|
|
614
|
|
|
} |
|
615
|
|
|
$infos[0]['table_alias'] = 'NULL'; |
|
616
|
|
|
$infos[0]['col'] = !isset($infos[0]['col']) ? '' : $infos[0]['col']; |
|
617
|
|
|
|
|
618
|
|
|
return $infos[0]; |
|
619
|
|
|
} |
|
620
|
|
|
} |
|
621
|
|
|
|
|
622
|
4 |
|
return 0; |
|
623
|
|
|
} |
|
624
|
|
|
|
|
625
|
102 |
|
public function getFROMSQL() |
|
626
|
|
|
{ |
|
627
|
102 |
|
$from_ids = $this->index['from']; |
|
628
|
102 |
|
$r = ''; |
|
629
|
102 |
|
foreach ($from_ids as $from_id) { |
|
630
|
102 |
|
$r .= $r ? ', ' : ''; |
|
631
|
102 |
|
$r .= 'triple T_'.$from_id; |
|
632
|
|
|
} |
|
633
|
|
|
|
|
634
|
102 |
|
return $r ? 'FROM '.$r : ''; |
|
635
|
|
|
} |
|
636
|
|
|
|
|
637
|
21 |
|
public function getOrderedJoinIDs() |
|
638
|
|
|
{ |
|
639
|
21 |
|
return array_merge($this->index['from'], $this->index['join'], $this->index['left_join']); |
|
640
|
|
|
} |
|
641
|
|
|
|
|
642
|
16 |
|
public function getJoinInfos($id) |
|
643
|
|
|
{ |
|
644
|
16 |
|
$r = []; |
|
645
|
16 |
|
$tbl_ids = $this->getOrderedJoinIDs(); |
|
646
|
16 |
|
$pattern = $this->getPattern($id); |
|
647
|
16 |
|
foreach ($tbl_ids as $tbl_id) { |
|
648
|
16 |
|
$tbl_pattern = $this->getPattern($tbl_id); |
|
649
|
16 |
|
if ($tbl_id != $id) { |
|
650
|
16 |
|
foreach (['s', 'p', 'o'] as $tbl_term) { |
|
651
|
16 |
|
foreach (['var', 'bnode', 'uri'] as $term_type) { |
|
652
|
16 |
|
if ($tbl_pattern[$tbl_term.'_type'] == $term_type) { |
|
653
|
16 |
|
foreach (['s', 'p', 'o'] as $term) { |
|
654
|
16 |
|
if (($pattern[$term.'_type'] == $term_type) && ($tbl_pattern[$tbl_term] == $pattern[$term])) { |
|
655
|
16 |
|
$r[] = ['term' => $term, 'join_tbl' => $tbl_id, 'join_term' => $tbl_term]; |
|
656
|
|
|
} |
|
657
|
|
|
} |
|
658
|
|
|
} |
|
659
|
|
|
} |
|
660
|
|
|
} |
|
661
|
|
|
} |
|
662
|
|
|
} |
|
663
|
|
|
|
|
664
|
16 |
|
return $r; |
|
665
|
|
|
} |
|
666
|
|
|
|
|
667
|
102 |
|
public function getAllJoinsSQL() |
|
668
|
|
|
{ |
|
669
|
102 |
|
$js = $this->getJoins(); |
|
670
|
102 |
|
$ljs = $this->getLeftJoins(); |
|
671
|
102 |
|
$entries = array_merge($js, $ljs); |
|
672
|
102 |
|
$id2code = []; |
|
673
|
102 |
|
foreach ($entries as $entry) { |
|
674
|
62 |
|
if (preg_match('/([^\s]+) ON (.*)/s', $entry, $m)) { |
|
675
|
62 |
|
$id2code[$m[1]] = $entry; |
|
676
|
|
|
} |
|
677
|
|
|
} |
|
678
|
102 |
|
$deps = []; |
|
679
|
102 |
|
foreach ($id2code as $id => $code) { |
|
680
|
62 |
|
$deps[$id]['rank'] = 0; |
|
681
|
62 |
|
foreach ($id2code as $other_id => $other_code) { |
|
682
|
62 |
|
$deps[$id]['rank'] += ($id != $other_id) && preg_match('/'.$other_id.'/', $code) ? 1 : 0; |
|
683
|
62 |
|
$deps[$id][$other_id] = ($id != $other_id) && preg_match('/'.$other_id.'/', $code) ? 1 : 0; |
|
684
|
|
|
} |
|
685
|
|
|
} |
|
686
|
102 |
|
$r = ''; |
|
687
|
|
|
do { |
|
688
|
|
|
/* get next 0-rank */ |
|
689
|
102 |
|
$next_id = 0; |
|
690
|
102 |
|
foreach ($deps as $id => $infos) { |
|
691
|
62 |
|
if (0 == $infos['rank']) { |
|
692
|
62 |
|
$next_id = $id; |
|
693
|
62 |
|
break; |
|
694
|
|
|
} |
|
695
|
|
|
} |
|
696
|
102 |
|
if ($next_id) { |
|
697
|
62 |
|
$r .= "\n".$id2code[$next_id]; |
|
698
|
62 |
|
unset($deps[$next_id]); |
|
699
|
62 |
|
foreach ($deps as $id => $infos) { |
|
700
|
12 |
|
$deps[$id]['rank'] = 0; |
|
701
|
12 |
|
unset($deps[$id][$next_id]); |
|
702
|
12 |
|
foreach ($infos as $k => $v) { |
|
703
|
12 |
|
if (!\in_array($k, ['rank', $next_id])) { |
|
704
|
12 |
|
$deps[$id]['rank'] += $v; |
|
705
|
12 |
|
$deps[$id][$k] = $v; |
|
706
|
|
|
} |
|
707
|
|
|
} |
|
708
|
|
|
} |
|
709
|
|
|
} |
|
710
|
102 |
|
} while ($next_id); |
|
711
|
|
|
|
|
712
|
102 |
|
return $r; |
|
713
|
|
|
} |
|
714
|
|
|
|
|
715
|
102 |
|
public function getJoins() |
|
716
|
|
|
{ |
|
717
|
102 |
|
$r = []; |
|
718
|
102 |
|
$nl = "\n"; |
|
719
|
102 |
|
foreach ($this->index['join'] as $id) { |
|
720
|
13 |
|
$sub_r = $this->getJoinConditionSQL($id); |
|
721
|
13 |
|
$r[] = 'JOIN triple T_'.$id.' ON ('.$sub_r.$nl.')'; |
|
722
|
|
|
} |
|
723
|
102 |
|
foreach (array_merge($this->index['from'], $this->index['join']) as $id) { |
|
724
|
102 |
|
if ($sub_r = $this->getRequiredSubJoinSQL($id)) { |
|
725
|
59 |
|
$r[] = $sub_r; |
|
726
|
|
|
} |
|
727
|
|
|
} |
|
728
|
|
|
|
|
729
|
102 |
|
return $r; |
|
730
|
|
|
} |
|
731
|
|
|
|
|
732
|
102 |
|
public function getLeftJoins() |
|
733
|
|
|
{ |
|
734
|
102 |
|
$r = []; |
|
735
|
102 |
|
$nl = "\n"; |
|
736
|
102 |
|
foreach ($this->index['left_join'] as $id) { |
|
737
|
2 |
|
$sub_r = $this->getJoinConditionSQL($id); |
|
738
|
2 |
|
$r[] = 'LEFT JOIN triple T_'.$id.' ON ('.$sub_r.$nl.')'; |
|
739
|
|
|
} |
|
740
|
102 |
|
foreach ($this->index['left_join'] as $id) { |
|
741
|
2 |
|
if ($sub_r = $this->getRequiredSubJoinSQL($id, 'LEFT')) { |
|
742
|
|
|
$r[] = $sub_r; |
|
743
|
|
|
} |
|
744
|
|
|
} |
|
745
|
|
|
|
|
746
|
102 |
|
return $r; |
|
747
|
|
|
} |
|
748
|
|
|
|
|
749
|
15 |
|
public function getJoinConditionSQL($id) |
|
750
|
|
|
{ |
|
751
|
15 |
|
$r = ''; |
|
752
|
15 |
|
$nl = "\n"; |
|
753
|
15 |
|
$infos = $this->getJoinInfos($id); |
|
754
|
15 |
|
$pattern = $this->getPattern($id); |
|
755
|
|
|
|
|
756
|
15 |
|
$tbl = 'T_'.$id; |
|
757
|
|
|
/* core dependency */ |
|
758
|
15 |
|
$d_tbls = $this->getDependentJoins($id); |
|
759
|
15 |
|
foreach ($d_tbls as $d_tbl) { |
|
760
|
13 |
|
if (preg_match('/^T_([0-9\_]+)\.[spo]+/', $d_tbl, $m) && ($m[1] != $id)) { |
|
761
|
|
|
if ($this->isJoinedBefore($m[1], $id) && !\in_array($m[1], array_merge($this->index['from'], $this->index['join']))) { |
|
|
|
|
|
|
762
|
|
|
$r .= $r ? $nl.' AND ' : $nl.' '; |
|
763
|
|
|
$r .= '('.$d_tbl.' IS NOT NULL)'; |
|
764
|
|
|
} |
|
765
|
|
|
$this->logDependency($id, $d_tbl); |
|
766
|
|
|
} |
|
767
|
|
|
} |
|
768
|
|
|
/* triple-based join info */ |
|
769
|
15 |
|
foreach ($infos as $info) { |
|
770
|
15 |
|
if ($this->isJoinedBefore($info['join_tbl'], $id) && $this->joinDependsOn($id, $info['join_tbl'])) { |
|
|
|
|
|
|
771
|
15 |
|
$r .= $r ? $nl.' AND ' : $nl.' '; |
|
772
|
15 |
|
$r .= '('.$tbl.'.'.$info['term'].' = T_'.$info['join_tbl'].'.'.$info['join_term'].')'; |
|
773
|
|
|
} |
|
774
|
|
|
} |
|
775
|
|
|
/* filters etc */ |
|
776
|
15 |
|
if ($sub_r = $this->getPatternSQL($pattern, 'join__T_'.$id)) { |
|
777
|
15 |
|
$r .= $r ? $nl.' AND '.$sub_r : $nl.' '.'('.$sub_r.')'; |
|
778
|
|
|
} |
|
779
|
|
|
|
|
780
|
15 |
|
return $r; |
|
781
|
|
|
} |
|
782
|
|
|
|
|
783
|
|
|
/** |
|
784
|
|
|
* A log of identified table join dependencies in getJoinConditionSQL. |
|
785
|
|
|
*/ |
|
786
|
|
|
public function logDependency($id, $tbl) |
|
787
|
|
|
{ |
|
788
|
|
|
if (!isset($this->dependency_log[$id])) { |
|
789
|
|
|
$this->dependency_log[$id] = []; |
|
|
|
|
|
|
790
|
|
|
} |
|
791
|
|
|
if (!\in_array($tbl, $this->dependency_log[$id])) { |
|
792
|
|
|
$this->dependency_log[$id][] = $tbl; |
|
793
|
|
|
} |
|
794
|
|
|
} |
|
795
|
|
|
|
|
796
|
|
|
/** |
|
797
|
|
|
* checks whether entries in the dependecy log could perhaps be optimized |
|
798
|
|
|
* (triggers re-ordering of patterns. |
|
799
|
|
|
*/ |
|
800
|
102 |
|
public function problematicDependencies() |
|
801
|
|
|
{ |
|
802
|
102 |
|
foreach ($this->dependency_log as $id => $tbls) { |
|
803
|
|
|
if (\count($tbls) > 1) { |
|
804
|
|
|
return \count($tbls); |
|
805
|
|
|
} |
|
806
|
|
|
} |
|
807
|
|
|
|
|
808
|
102 |
|
return 0; |
|
809
|
|
|
} |
|
810
|
|
|
|
|
811
|
20 |
|
public function isJoinedBefore($tbl_1, $tbl_2) |
|
812
|
|
|
{ |
|
813
|
20 |
|
$tbl_ids = $this->getOrderedJoinIDs(); |
|
814
|
20 |
|
foreach ($tbl_ids as $id) { |
|
815
|
20 |
|
if ($id == $tbl_1) { |
|
816
|
20 |
|
return 1; |
|
817
|
|
|
} |
|
818
|
1 |
|
if ($id == $tbl_2) { |
|
819
|
1 |
|
return 0; |
|
820
|
|
|
} |
|
821
|
|
|
} |
|
822
|
|
|
} |
|
823
|
|
|
|
|
824
|
15 |
|
public function joinDependsOn($id, $id2) |
|
825
|
|
|
{ |
|
826
|
15 |
|
if (\in_array($id2, array_merge($this->index['from'], $this->index['join']))) { |
|
827
|
15 |
|
return 1; |
|
828
|
|
|
} |
|
829
|
1 |
|
$d_tbls = $this->getDependentJoins($id2); |
|
830
|
|
|
//echo $id . ' :: ' . $id2 . '=>' . print_r($d_tbls, 1); |
|
831
|
1 |
|
foreach ($d_tbls as $d_tbl) { |
|
832
|
1 |
|
if (preg_match('/^T_'.$id.'\./', $d_tbl)) { |
|
833
|
|
|
return 1; |
|
834
|
|
|
} |
|
835
|
|
|
} |
|
836
|
|
|
|
|
837
|
1 |
|
return 0; |
|
838
|
|
|
} |
|
839
|
|
|
|
|
840
|
15 |
|
public function getDependentJoins($id) |
|
841
|
|
|
{ |
|
842
|
15 |
|
$r = []; |
|
843
|
|
|
/* sub joins */ |
|
844
|
15 |
|
foreach ($this->index['sub_joins'] as $alias) { |
|
845
|
13 |
|
if (preg_match('/^(T|V|G)_'.$id.'/', $alias)) { |
|
846
|
13 |
|
$r[] = $alias; |
|
847
|
|
|
} |
|
848
|
|
|
} |
|
849
|
|
|
/* siblings in shared optional */ |
|
850
|
15 |
|
$o_id = $this->getOptionalPattern($id); |
|
851
|
15 |
|
foreach ($this->index['sub_joins'] as $alias) { |
|
852
|
13 |
|
if (preg_match('/^(T|V|G)_'.$o_id.'/', $alias) && !\in_array($alias, $r)) { |
|
853
|
11 |
|
$r[] = $alias; |
|
854
|
|
|
} |
|
855
|
|
|
} |
|
856
|
15 |
|
foreach ($this->index['left_join'] as $alias) { |
|
857
|
2 |
|
if (preg_match('/^'.$o_id.'/', $alias) && !\in_array($alias, $r)) { |
|
858
|
2 |
|
$r[] = 'T_'.$alias.'.s'; |
|
859
|
|
|
} |
|
860
|
|
|
} |
|
861
|
|
|
|
|
862
|
15 |
|
return $r; |
|
863
|
|
|
} |
|
864
|
|
|
|
|
865
|
102 |
|
public function getRequiredSubJoinSQL($id, $prefix = '') |
|
866
|
|
|
{ |
|
867
|
|
|
/* id is a triple pattern id. Optional FILTERS and GRAPHs are getting added to the join directly */ |
|
868
|
102 |
|
$nl = "\n"; |
|
869
|
102 |
|
$r = ''; |
|
870
|
102 |
|
foreach ($this->index['sub_joins'] as $alias) { |
|
871
|
101 |
|
if (preg_match('/^V_'.$id.'_([a-z\_]+)\.val$/', $alias, $m)) { |
|
872
|
12 |
|
$col = $m[1]; |
|
873
|
12 |
|
$sub_r = ''; |
|
874
|
12 |
|
if ($this->isOptionalPattern($id)) { |
|
875
|
|
|
$pattern = $this->getPattern($id); |
|
876
|
|
|
do { |
|
877
|
|
|
$pattern = $this->getPattern($pattern['parent_id']); |
|
878
|
|
|
} while ($pattern['parent_id'] && ('optional' != $pattern['type'])); |
|
879
|
|
|
$sub_r = $this->getPatternSQL($pattern, 'sub_join__V_'.$id); |
|
880
|
|
|
} |
|
881
|
12 |
|
$sub_r = $sub_r ? $nl.' AND ('.$sub_r.')' : ''; |
|
882
|
|
|
/* lang dt only on literals */ |
|
883
|
12 |
|
if ('o_lang_dt' == $col) { |
|
884
|
4 |
|
$sub_sub_r = 'T_'.$id.'.o_type = 2'; |
|
885
|
4 |
|
$sub_r .= $nl.' AND ('.$sub_sub_r.')'; |
|
886
|
|
|
} |
|
887
|
12 |
|
$cur_prefix = $prefix ? $prefix.' ' : ''; |
|
888
|
12 |
|
if ('g' == $col) { |
|
889
|
|
|
$r .= trim($cur_prefix.'JOIN '.$this->getValueTable($col).' V_'.$id.'_'.$col.' ON ('.$nl.' (G_'.$id.'.'.$col.' = V_'.$id.'_'.$col.'.id) '.$sub_r.$nl.')'); |
|
890
|
|
|
} else { |
|
891
|
12 |
|
$r .= trim($cur_prefix.'JOIN '.$this->getValueTable($col).' V_'.$id.'_'.$col.' ON ('.$nl.' (T_'.$id.'.'.$col.' = V_'.$id.'_'.$col.'.id) '.$sub_r.$nl.')'); |
|
892
|
|
|
} |
|
893
|
101 |
|
} elseif (preg_match('/^G_'.$id.'\.g$/', $alias, $m)) { |
|
894
|
49 |
|
$pattern = $this->getPattern($id); |
|
895
|
49 |
|
$sub_r = $this->getPatternSQL($pattern, 'graph_sub_join__G_'.$id); |
|
896
|
49 |
|
$sub_r = $sub_r ? $nl.' AND '.$sub_r : ''; |
|
897
|
|
|
/* dataset restrictions */ |
|
898
|
49 |
|
$gi = $this->getGraphInfos($id); |
|
899
|
49 |
|
$sub_sub_r = ''; |
|
900
|
49 |
|
$added_gts = []; |
|
901
|
49 |
|
foreach ($gi as $set) { |
|
902
|
49 |
|
if (isset($set['graph']) && !\in_array($set['graph'], $added_gts)) { |
|
903
|
49 |
|
$sub_sub_r .= '' !== $sub_sub_r ? ',' : ''; |
|
904
|
49 |
|
$sub_sub_r .= $this->getTermID($set['graph'], 'g'); |
|
905
|
49 |
|
$added_gts[] = $set['graph']; |
|
906
|
|
|
} |
|
907
|
|
|
} |
|
908
|
49 |
|
$sub_r .= ('' !== $sub_sub_r) ? $nl.' AND (G_'.$id.'.g IN ('.$sub_sub_r.'))' : ''; |
|
909
|
|
|
/* other graph join conditions */ |
|
910
|
49 |
|
foreach ($this->index['graph_vars'] as $var => $occurs) { |
|
911
|
|
|
$occur_tbls = []; |
|
912
|
|
|
foreach ($occurs as $occur) { |
|
913
|
|
|
$occur_tbls[] = $occur['table']; |
|
914
|
|
|
if ($occur['table'] == $id) { |
|
915
|
|
|
break; |
|
916
|
|
|
} |
|
917
|
|
|
} |
|
918
|
|
|
foreach ($occur_tbls as $tbl) { |
|
919
|
|
|
if (($tbl != $id) && \in_array($id, $occur_tbls) && $this->isJoinedBefore($tbl, $id)) { |
|
|
|
|
|
|
920
|
|
|
$sub_r .= $nl.' AND (G_'.$id.'.g = G_'.$tbl.'.g)'; |
|
921
|
|
|
} |
|
922
|
|
|
} |
|
923
|
|
|
} |
|
924
|
49 |
|
$cur_prefix = $prefix ? $prefix.' ' : ''; |
|
925
|
49 |
|
$r .= trim($cur_prefix.'JOIN '.$this->getGraphTable().' G_'.$id.' ON ('.$nl.' (T_'.$id.'.t = G_'.$id.'.t)'.$sub_r.$nl.')'); |
|
926
|
|
|
} |
|
927
|
|
|
} |
|
928
|
|
|
|
|
929
|
102 |
|
return $r; |
|
930
|
|
|
} |
|
931
|
|
|
|
|
932
|
102 |
|
public function getWHERESQL() |
|
933
|
|
|
{ |
|
934
|
102 |
|
$r = ''; |
|
935
|
102 |
|
$nl = "\n"; |
|
936
|
|
|
/* standard constraints */ |
|
937
|
102 |
|
$sub_r = $this->getPatternSQL($this->getPattern('0'), 'where'); |
|
938
|
|
|
/* additional constraints */ |
|
939
|
102 |
|
foreach ($this->index['from'] as $id) { |
|
940
|
102 |
|
if ($sub_sub_r = $this->getConstraintSQL($id)) { |
|
941
|
|
|
$sub_r .= $sub_r ? $nl.' AND '.$sub_sub_r : $sub_sub_r; |
|
942
|
|
|
} |
|
943
|
|
|
} |
|
944
|
102 |
|
$r .= $sub_r ?: ''; |
|
945
|
|
|
/* left join dependencies */ |
|
946
|
102 |
|
foreach ($this->index['left_join'] as $id) { |
|
947
|
2 |
|
$d_joins = $this->getDependentJoins($id); |
|
948
|
2 |
|
$added = []; |
|
949
|
2 |
|
$d_aliases = []; |
|
950
|
2 |
|
$id_alias = 'T_'.$id.'.s'; |
|
951
|
2 |
|
foreach ($d_joins as $alias) { |
|
952
|
2 |
|
if (preg_match('/^(T|V|G)_([0-9\_]+)(_[spo])?\.([a-z\_]+)/', $alias, $m)) { |
|
953
|
2 |
|
$tbl_type = $m[1]; |
|
954
|
2 |
|
$tbl_pattern_id = $m[2]; |
|
955
|
2 |
|
$suffix = $m[3]; |
|
956
|
|
|
/* get rid of dependency permutations and nested optionals */ |
|
957
|
2 |
|
if (($tbl_pattern_id >= $id) && $this->sameOptional($tbl_pattern_id, $id)) { |
|
958
|
2 |
|
if (!\in_array($tbl_type.'_'.$tbl_pattern_id.$suffix, $added)) { |
|
959
|
2 |
|
$sub_r .= $sub_r ? ' AND ' : ''; |
|
960
|
2 |
|
$sub_r .= $alias.' IS NULL'; |
|
961
|
2 |
|
$d_aliases[] = $alias; |
|
962
|
2 |
|
$added[] = $tbl_type.'_'.$tbl_pattern_id.$suffix; |
|
963
|
2 |
|
$id_alias = ($tbl_pattern_id == $id) ? $alias : $id_alias; |
|
964
|
|
|
} |
|
965
|
|
|
} |
|
966
|
|
|
} |
|
967
|
|
|
} |
|
968
|
|
|
/* TODO fix this! */ |
|
969
|
2 |
|
if (\count($d_aliases) > 2) { |
|
970
|
|
|
$sub_r1 = ' /* '.$id_alias.' dependencies */'; |
|
971
|
|
|
$sub_r2 = '(('.$id_alias.' IS NULL) OR (CONCAT('.implode(', ', $d_aliases).') IS NOT NULL))'; |
|
972
|
|
|
$r .= $r ? $nl.$sub_r1.$nl.' AND '.$sub_r2 : $sub_r1.$nl.$sub_r2; |
|
973
|
|
|
} |
|
974
|
|
|
} |
|
975
|
|
|
|
|
976
|
102 |
|
return $r ? $nl.'WHERE '.$r : ''; |
|
977
|
|
|
} |
|
978
|
|
|
|
|
979
|
|
|
public function addConstraintSQLEntry($id, $sql) |
|
980
|
|
|
{ |
|
981
|
|
|
if (!isset($this->index['constraints'][$id])) { |
|
982
|
|
|
$this->index['constraints'][$id] = []; |
|
|
|
|
|
|
983
|
|
|
} |
|
984
|
|
|
if (!\in_array($sql, $this->index['constraints'][$id])) { |
|
985
|
|
|
$this->index['constraints'][$id][] = $sql; |
|
986
|
|
|
} |
|
987
|
|
|
} |
|
988
|
|
|
|
|
989
|
102 |
|
public function getConstraintSQL($id) |
|
990
|
|
|
{ |
|
991
|
102 |
|
$r = ''; |
|
992
|
102 |
|
$nl = "\n"; |
|
993
|
102 |
|
$constraints = $this->index['constraints'][$id] ?? []; |
|
994
|
102 |
|
foreach ($constraints as $constraint) { |
|
995
|
|
|
$r .= $r ? $nl.' AND '.$constraint : $constraint; |
|
996
|
|
|
} |
|
997
|
|
|
|
|
998
|
102 |
|
return $r; |
|
999
|
|
|
} |
|
1000
|
|
|
|
|
1001
|
102 |
|
public function getPatternSQL($pattern, $context) |
|
1002
|
|
|
{ |
|
1003
|
102 |
|
$type = $pattern['type'] ?? ''; |
|
1004
|
102 |
|
if (!$type) { |
|
1005
|
|
|
return ''; |
|
1006
|
|
|
} |
|
1007
|
|
|
|
|
1008
|
102 |
|
$m = 'get'.ucfirst($type).'PatternSQL'; |
|
1009
|
|
|
|
|
1010
|
102 |
|
return method_exists($this, $m) |
|
1011
|
102 |
|
? $this->$m($pattern, $context) |
|
1012
|
102 |
|
: $this->getDefaultPatternSQL($pattern, $context); |
|
1013
|
|
|
} |
|
1014
|
|
|
|
|
1015
|
102 |
|
public function getDefaultPatternSQL($pattern, $context) |
|
1016
|
|
|
{ |
|
1017
|
102 |
|
$r = ''; |
|
1018
|
102 |
|
$nl = "\n"; |
|
1019
|
102 |
|
$sub_ids = $pattern['patterns'] ?? []; |
|
1020
|
102 |
|
foreach ($sub_ids as $sub_id) { |
|
1021
|
102 |
|
$sub_r = $this->getPatternSQL($this->getPattern($sub_id), $context); |
|
1022
|
102 |
|
$r .= ($r && $sub_r) ? $nl.' AND ('.$sub_r.')' : ($sub_r ?: ''); |
|
1023
|
|
|
} |
|
1024
|
|
|
|
|
1025
|
102 |
|
return $r ? $r : ''; |
|
1026
|
|
|
} |
|
1027
|
|
|
|
|
1028
|
102 |
|
public function getTriplePatternSQL($pattern, $context) |
|
1029
|
|
|
{ |
|
1030
|
102 |
|
$r = ''; |
|
1031
|
102 |
|
$nl = "\n"; |
|
1032
|
102 |
|
$id = $pattern['id']; |
|
1033
|
|
|
/* s p o */ |
|
1034
|
102 |
|
$vars = []; |
|
1035
|
102 |
|
foreach (['s', 'p', 'o'] as $term) { |
|
1036
|
102 |
|
$sub_r = ''; |
|
1037
|
102 |
|
$type = $pattern[$term.'_type']; |
|
1038
|
102 |
|
if ('uri' == $type) { |
|
1039
|
72 |
|
$term_id = $this->getTermID($pattern[$term], $term); |
|
1040
|
72 |
|
$sub_r = '(T_'.$id.'.'.$term.' = '.$term_id.') /* ' |
|
1041
|
72 |
|
.preg_replace('/[\#\*\>]/', '::', $pattern[$term]).' */'; |
|
1042
|
102 |
|
} elseif ('literal' == $type) { |
|
1043
|
6 |
|
$term_id = $this->getTermID($pattern[$term], $term); |
|
1044
|
6 |
|
$sub_r = '(T_'.$id.'.'.$term.' = '.$term_id.') /* ' |
|
1045
|
6 |
|
.preg_replace('/[\#\n\*\>]/', ' ', $pattern[$term]).' */'; |
|
1046
|
|
|
if ( |
|
1047
|
6 |
|
($lang_dt = $pattern[$term.'_lang'] ?? '') |
|
1048
|
6 |
|
|| ($lang_dt = $pattern[$term.'_datatype'] ?? '') |
|
1049
|
|
|
) { |
|
1050
|
2 |
|
$lang_dt_id = $this->getTermID($lang_dt); |
|
1051
|
|
|
$sub_r .= $nl |
|
1052
|
2 |
|
.' AND (T_'.$id.'.'.$term.'_lang_dt = '.$lang_dt_id.') /* ' |
|
1053
|
6 |
|
.preg_replace('/[\#\*\>]/', '::', $lang_dt).' */'; |
|
1054
|
|
|
} |
|
1055
|
102 |
|
} elseif ('var' == $type) { |
|
1056
|
102 |
|
$val = $pattern[$term]; |
|
1057
|
102 |
|
if (isset($vars[$val])) { |
|
1058
|
|
|
/* repeated var in pattern */ |
|
1059
|
|
|
$sub_r = '(T_'.$id.'.'.$term.'='.'T_'.$id.'.'.$vars[$val].')'; |
|
1060
|
|
|
} |
|
1061
|
102 |
|
$vars[$val] = $term; |
|
1062
|
102 |
|
if ($infos = $this->index['graph_vars'][$val] ?? 0) { |
|
1063
|
|
|
/* graph var in triple pattern */ |
|
1064
|
|
|
$sub_r .= $sub_r ? $nl.' AND ' : ''; |
|
1065
|
|
|
$tbl = $infos[0]['table']; |
|
1066
|
|
|
$sub_r .= 'G_'.$tbl.'.g = T_'.$id.'.'.$term; |
|
1067
|
|
|
} |
|
1068
|
|
|
} |
|
1069
|
102 |
|
if ($sub_r) { |
|
1070
|
|
|
if ( |
|
1071
|
72 |
|
preg_match('/^(join)/', $context) |
|
1072
|
72 |
|
|| (preg_match('/^where/', $context) && \in_array($id, $this->index['from'])) |
|
1073
|
|
|
) { |
|
1074
|
72 |
|
$r .= $r ? $nl.' AND '.$sub_r : $sub_r; |
|
1075
|
|
|
} |
|
1076
|
|
|
} |
|
1077
|
|
|
} |
|
1078
|
|
|
/* g */ |
|
1079
|
102 |
|
if ($infos = $pattern['graph_infos']) { |
|
1080
|
49 |
|
$tbl_alias = 'G_'.$id.'.g'; |
|
1081
|
49 |
|
if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
1082
|
49 |
|
$this->index['sub_joins'][] = $tbl_alias; |
|
|
|
|
|
|
1083
|
|
|
} |
|
1084
|
49 |
|
$sub_r = ['graph_var' => '', 'graph_uri' => '', 'from' => '', 'from_named' => '']; |
|
1085
|
49 |
|
foreach ($infos as $info) { |
|
1086
|
49 |
|
$type = $info['type']; |
|
1087
|
49 |
|
if ('graph' == $type) { |
|
1088
|
|
|
if ($info['uri']) { |
|
1089
|
|
|
$term_id = $this->getTermID($info['uri'], 'g'); |
|
1090
|
|
|
$sub_r['graph_uri'] .= $sub_r['graph_uri'] ? $nl.' AND ' : ''; |
|
1091
|
|
|
$sub_r['graph_uri'] .= '('.$tbl_alias.' = '.$term_id.') /* ' |
|
1092
|
|
|
.preg_replace('/[\#\*\>]/', '::', $info['uri']).' */'; |
|
1093
|
|
|
} |
|
1094
|
|
|
} |
|
1095
|
|
|
} |
|
1096
|
49 |
|
if ($sub_r['from'] && $sub_r['from_named']) { |
|
1097
|
|
|
$sub_r['from_named'] = ''; |
|
1098
|
|
|
} |
|
1099
|
49 |
|
if (!$sub_r['from'] && !$sub_r['from_named']) { |
|
1100
|
49 |
|
$sub_r['graph_var'] = ''; |
|
1101
|
|
|
} |
|
1102
|
49 |
|
if (preg_match('/^(graph_sub_join)/', $context)) { |
|
1103
|
49 |
|
foreach ($sub_r as $g_type => $g_sql) { |
|
1104
|
49 |
|
if ($g_sql) { |
|
1105
|
|
|
$r .= $r ? $nl.' AND '.$g_sql : $g_sql; |
|
1106
|
|
|
} |
|
1107
|
|
|
} |
|
1108
|
|
|
} |
|
1109
|
|
|
} |
|
1110
|
|
|
/* optional sibling filters? */ |
|
1111
|
102 |
|
if (preg_match('/^(join|sub_join)/', $context) && $this->isOptionalPattern($id)) { |
|
1112
|
2 |
|
$o_pattern = $pattern; |
|
1113
|
|
|
do { |
|
1114
|
2 |
|
$o_pattern = $this->getPattern($o_pattern['parent_id']); |
|
1115
|
2 |
|
} while ($o_pattern['parent_id'] && ('optional' != $o_pattern['type'])); |
|
1116
|
2 |
|
if ($sub_r = $this->getPatternSQL($o_pattern, 'optional_filter'.preg_replace('/^(.*)(__.*)$/', '\\2', $context))) { |
|
1117
|
|
|
$r .= $r ? $nl.' AND '.$sub_r : $sub_r; |
|
1118
|
|
|
} |
|
1119
|
|
|
/* created constraints */ |
|
1120
|
2 |
|
if ($sub_r = $this->getConstraintSQL($id)) { |
|
1121
|
|
|
$r .= $r ? $nl.' AND '.$sub_r : $sub_r; |
|
1122
|
|
|
} |
|
1123
|
|
|
} |
|
1124
|
|
|
/* result */ |
|
1125
|
102 |
|
if (preg_match('/^(where)/', $context) && $this->isOptionalPattern($id)) { |
|
1126
|
2 |
|
return ''; |
|
1127
|
|
|
} |
|
1128
|
|
|
|
|
1129
|
102 |
|
return $r; |
|
1130
|
|
|
} |
|
1131
|
|
|
|
|
1132
|
23 |
|
public function getFilterPatternSQL($pattern, $context) |
|
1133
|
|
|
{ |
|
1134
|
23 |
|
$r = ''; |
|
1135
|
23 |
|
$id = $pattern['id']; |
|
1136
|
23 |
|
$constraint_id = $pattern['constraint'] ?? ''; |
|
1137
|
23 |
|
$constraint = $this->getPattern($constraint_id); |
|
1138
|
23 |
|
$constraint_type = $constraint['type']; |
|
1139
|
23 |
|
if ('built_in_call' == $constraint_type) { |
|
1140
|
14 |
|
$r = $this->getBuiltInCallSQL($constraint, $context); |
|
1141
|
9 |
|
} elseif ('expression' == $constraint_type) { |
|
1142
|
9 |
|
$r = $this->getExpressionSQL($constraint, $context, '', 'filter'); |
|
1143
|
|
|
} else { |
|
1144
|
|
|
$m = 'get'.ucfirst($constraint_type).'ExpressionSQL'; |
|
1145
|
|
|
if (method_exists($this, $m)) { |
|
1146
|
|
|
$r = $this->$m($constraint, $context, '', 'filter'); |
|
1147
|
|
|
} |
|
1148
|
|
|
} |
|
1149
|
23 |
|
if ($this->isOptionalPattern($id) && !preg_match('/^(join|optional_filter)/', $context)) { |
|
1150
|
|
|
return ''; |
|
1151
|
|
|
} |
|
1152
|
|
|
/* unconnected vars in FILTERs eval to false */ |
|
1153
|
23 |
|
$sub_r = $this->hasUnconnectedFilterVars($id); |
|
1154
|
23 |
|
if ($sub_r) { |
|
1155
|
|
|
if ('alias' == $sub_r) { |
|
1156
|
|
|
if (!\in_array($r, $this->index['havings'])) { |
|
1157
|
|
|
$this->index['havings'][] = $r; |
|
|
|
|
|
|
1158
|
|
|
} |
|
1159
|
|
|
|
|
1160
|
|
|
return ''; |
|
1161
|
|
|
} elseif (preg_match('/^T([^\s]+\.)g (.*)$/s', $r, $m)) {/* graph filter */ |
|
1162
|
|
|
return 'G'.$m[1].'t '.$m[2]; |
|
1163
|
|
|
} elseif (preg_match('/^\(*V[^\s]+_g\.val .*$/s', $r, $m)) { |
|
1164
|
|
|
/* graph value filter, @@improveMe */ |
|
1165
|
|
|
} else { |
|
1166
|
|
|
return 'FALSE'; |
|
1167
|
|
|
} |
|
1168
|
|
|
} |
|
1169
|
|
|
/* some really ugly tweaks */ |
|
1170
|
|
|
/* empty language filter: FILTER ( lang(?v) = '' ) */ |
|
1171
|
23 |
|
$r = preg_replace( |
|
1172
|
23 |
|
'/\(\/\* language call \*\/ ([^\s]+) = ""\)/s', '((\\1 = "") OR (\\1 LIKE "%:%"))', |
|
1173
|
|
|
$r |
|
1174
|
|
|
); |
|
1175
|
|
|
|
|
1176
|
23 |
|
return $r; |
|
1177
|
|
|
} |
|
1178
|
|
|
|
|
1179
|
|
|
/** |
|
1180
|
|
|
* Checks if vars in the given (filter) pattern are used within the filter's scope. |
|
1181
|
|
|
*/ |
|
1182
|
23 |
|
public function hasUnconnectedFilterVars($filter_pattern_id) |
|
1183
|
|
|
{ |
|
1184
|
23 |
|
$scope_id = $this->getFilterScope($filter_pattern_id); |
|
1185
|
23 |
|
$vars = $this->getFilterVars($filter_pattern_id); |
|
1186
|
23 |
|
$r = 0; |
|
1187
|
23 |
|
foreach ($vars as $var_name) { |
|
1188
|
7 |
|
if ($this->isUsedTripleVar($var_name, $scope_id)) { |
|
|
|
|
|
|
1189
|
7 |
|
continue; |
|
1190
|
|
|
} |
|
1191
|
|
|
if ($this->isAliasVar($var_name)) { |
|
1192
|
|
|
$r = 'alias'; |
|
1193
|
|
|
break; |
|
1194
|
|
|
} |
|
1195
|
|
|
$r = 1; |
|
1196
|
|
|
break; |
|
1197
|
|
|
} |
|
1198
|
|
|
|
|
1199
|
23 |
|
return $r; |
|
1200
|
|
|
} |
|
1201
|
|
|
|
|
1202
|
|
|
/** |
|
1203
|
|
|
* Returns the given filter pattern's scope (the id of the parent group pattern). |
|
1204
|
|
|
*/ |
|
1205
|
23 |
|
public function getFilterScope($filter_pattern_id) |
|
1206
|
|
|
{ |
|
1207
|
23 |
|
$patterns = $this->initial_index['patterns']; |
|
1208
|
23 |
|
$r = ''; |
|
1209
|
23 |
|
foreach ($patterns as $id => $p) { |
|
1210
|
|
|
/* the id has to be sub-part of the given filter id */ |
|
1211
|
23 |
|
if (!preg_match('/^'.$id.'.+/', $filter_pattern_id)) { |
|
1212
|
23 |
|
continue; |
|
1213
|
|
|
} |
|
1214
|
|
|
/* we are looking for a group or union */ |
|
1215
|
23 |
|
if (!preg_match('/^(group|union)$/', $p['type'])) { |
|
1216
|
|
|
continue; |
|
1217
|
|
|
} |
|
1218
|
|
|
/* we are looking for the longest/deepest match */ |
|
1219
|
23 |
|
if (\strlen($id) > \strlen($r)) { |
|
1220
|
23 |
|
$r = $id; |
|
1221
|
|
|
} |
|
1222
|
|
|
} |
|
1223
|
|
|
|
|
1224
|
23 |
|
return $r; |
|
1225
|
|
|
} |
|
1226
|
|
|
|
|
1227
|
|
|
/** |
|
1228
|
|
|
* Builds a list of vars used in the given (filter) pattern. |
|
1229
|
|
|
*/ |
|
1230
|
23 |
|
public function getFilterVars($filter_pattern_id) |
|
1231
|
|
|
{ |
|
1232
|
23 |
|
$r = []; |
|
1233
|
23 |
|
$patterns = $this->initial_index['patterns']; |
|
1234
|
|
|
/* find vars in the given filter (i.e. the given id is part of their pattern id) */ |
|
1235
|
23 |
|
foreach ($patterns as $id => $p) { |
|
1236
|
23 |
|
if (!preg_match('/^'.$filter_pattern_id.'.+/', $id)) { |
|
1237
|
23 |
|
continue; |
|
1238
|
|
|
} |
|
1239
|
23 |
|
$var_name = ''; |
|
1240
|
23 |
|
if ('var' == $p['type']) { |
|
1241
|
5 |
|
$var_name = $p['value']; |
|
1242
|
23 |
|
} elseif (('built_in_call' == $p['type']) && ('bound' == $p['call'])) { |
|
1243
|
2 |
|
$var_name = $p['args'][0]['value']; |
|
1244
|
|
|
} |
|
1245
|
23 |
|
if ($var_name && !\in_array($var_name, $r)) { |
|
1246
|
7 |
|
$r[] = $var_name; |
|
1247
|
|
|
} |
|
1248
|
|
|
} |
|
1249
|
|
|
|
|
1250
|
23 |
|
return $r; |
|
1251
|
|
|
} |
|
1252
|
|
|
|
|
1253
|
|
|
/** |
|
1254
|
|
|
* Checks if $var_name appears as result projection alias. |
|
1255
|
|
|
*/ |
|
1256
|
|
|
public function isAliasVar($var_name) |
|
1257
|
|
|
{ |
|
1258
|
|
|
foreach ($this->infos['query']['result_vars'] as $r_var) { |
|
1259
|
|
|
if ($r_var['alias'] == $var_name) { |
|
1260
|
|
|
return 1; |
|
1261
|
|
|
} |
|
1262
|
|
|
} |
|
1263
|
|
|
|
|
1264
|
|
|
return 0; |
|
1265
|
|
|
} |
|
1266
|
|
|
|
|
1267
|
|
|
/** |
|
1268
|
|
|
* Checks if $var_name is used in a triple pattern in the given scope. |
|
1269
|
|
|
*/ |
|
1270
|
7 |
|
public function isUsedTripleVar($var_name, $scope_id = '0') |
|
1271
|
|
|
{ |
|
1272
|
7 |
|
$patterns = $this->initial_index['patterns']; |
|
1273
|
7 |
|
foreach ($patterns as $id => $p) { |
|
1274
|
7 |
|
if ('triple' != $p['type']) { |
|
1275
|
|
|
continue; |
|
1276
|
|
|
} |
|
1277
|
7 |
|
if (!preg_match('/^'.$scope_id.'.+/', $id)) { |
|
1278
|
|
|
continue; |
|
1279
|
|
|
} |
|
1280
|
7 |
|
foreach (['s', 'p', 'o'] as $term) { |
|
1281
|
7 |
|
if ('var' != $p[$term.'_type']) { |
|
1282
|
7 |
|
continue; |
|
1283
|
|
|
} |
|
1284
|
7 |
|
if ($p[$term] == $var_name) { |
|
1285
|
7 |
|
return 1; |
|
1286
|
|
|
} |
|
1287
|
|
|
} |
|
1288
|
|
|
} |
|
1289
|
|
|
} |
|
1290
|
|
|
|
|
1291
|
13 |
|
public function getExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
1292
|
|
|
{ |
|
1293
|
13 |
|
$r = ''; |
|
1294
|
13 |
|
$type = $pattern['type'] ?? ''; |
|
1295
|
13 |
|
$sub_type = $pattern['sub_type'] ?? $type; |
|
1296
|
13 |
|
if (preg_match('/^(and|or)$/', $sub_type)) { |
|
1297
|
1 |
|
foreach ($pattern['patterns'] as $sub_id) { |
|
1298
|
1 |
|
$sub_pattern = $this->getPattern($sub_id); |
|
1299
|
1 |
|
$sub_pattern_type = $sub_pattern['type']; |
|
1300
|
1 |
|
if ('built_in_call' == $sub_pattern_type) { |
|
1301
|
|
|
$sub_r = $this->getBuiltInCallSQL($sub_pattern, $context, '', $parent_type); |
|
|
|
|
|
|
1302
|
|
|
} else { |
|
1303
|
1 |
|
$sub_r = $this->getExpressionSQL($sub_pattern, $context, '', $parent_type); |
|
1304
|
|
|
} |
|
1305
|
1 |
|
if ($sub_r) { |
|
1306
|
1 |
|
$r .= $r ? ' '.strtoupper($sub_type).' ('.$sub_r.')' : '('.$sub_r.')'; |
|
1307
|
|
|
} |
|
1308
|
|
|
} |
|
1309
|
13 |
|
} elseif ('built_in_call' == $sub_type) { |
|
1310
|
|
|
$r = $this->getBuiltInCallSQL($pattern, $context, $val_type, $parent_type); |
|
1311
|
13 |
|
} elseif (preg_match('/literal/', $sub_type)) { |
|
1312
|
4 |
|
$r = $this->getLiteralExpressionSQL($pattern, $context, $val_type, $parent_type); |
|
1313
|
11 |
|
} elseif ($sub_type) { |
|
1314
|
11 |
|
$m = 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
1315
|
11 |
|
if (method_exists($this, $m)) { |
|
1316
|
11 |
|
$r = $this->$m($pattern, $context, '', $parent_type); |
|
1317
|
|
|
} |
|
1318
|
|
|
} |
|
1319
|
|
|
/* skip expressions that reference non-yet-joined tables */ |
|
1320
|
13 |
|
if (preg_match('/__(T|V|G)_(.+)$/', $context, $m)) { |
|
1321
|
|
|
$context_pattern_id = $m[2]; |
|
1322
|
|
|
$context_table_type = $m[1]; |
|
1323
|
|
|
if (preg_match_all('/((T|V|G)(\_[0-9])+)/', $r, $m)) { |
|
1324
|
|
|
$aliases = $m[1]; |
|
1325
|
|
|
$keep = 1; |
|
1326
|
|
|
foreach ($aliases as $alias) { |
|
1327
|
|
|
if (preg_match('/(T|V|G)_(.*)$/', $alias, $m)) { |
|
1328
|
|
|
$tbl_type = $m[1]; |
|
1329
|
|
|
$tbl = $m[2]; |
|
1330
|
|
|
if (!$this->isJoinedBefore($tbl, $context_pattern_id)) { |
|
|
|
|
|
|
1331
|
|
|
$keep = 0; |
|
1332
|
|
|
} elseif (($context_pattern_id == $tbl) && preg_match('/(TV)/', $context_table_type.$tbl_type)) { |
|
1333
|
|
|
$keep = 0; |
|
1334
|
|
|
} |
|
1335
|
|
|
} |
|
1336
|
|
|
} |
|
1337
|
|
|
$r = $keep ? $r : ''; |
|
1338
|
|
|
} |
|
1339
|
|
|
} |
|
1340
|
|
|
|
|
1341
|
13 |
|
return $r ? '('.$r.')' : $r; |
|
1342
|
|
|
} |
|
1343
|
|
|
|
|
1344
|
9 |
|
public function detectExpressionValueType($pattern_ids) |
|
1345
|
|
|
{ |
|
1346
|
9 |
|
foreach ($pattern_ids as $id) { |
|
1347
|
9 |
|
$pattern = $this->getPattern($id); |
|
1348
|
9 |
|
$type = $pattern['type'] ?? ''; |
|
1349
|
9 |
|
if (('literal' == $type) && isset($pattern['datatype'])) { |
|
1350
|
5 |
|
$numericDatatypes = [$this->xsd.'integer', $this->xsd.'float', $this->xsd.'double']; |
|
1351
|
5 |
|
if (\in_array($pattern['datatype'], $numericDatatypes)) { |
|
1352
|
5 |
|
return 'numeric'; |
|
1353
|
|
|
} |
|
1354
|
|
|
} |
|
1355
|
|
|
} |
|
1356
|
|
|
|
|
1357
|
4 |
|
return ''; |
|
1358
|
|
|
} |
|
1359
|
|
|
|
|
1360
|
9 |
|
public function getRelationalExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
1361
|
|
|
{ |
|
1362
|
9 |
|
$r = ''; |
|
1363
|
9 |
|
$val_type = $this->detectExpressionValueType($pattern['patterns']); |
|
1364
|
9 |
|
$op = $pattern['operator']; |
|
1365
|
9 |
|
foreach ($pattern['patterns'] as $sub_id) { |
|
1366
|
9 |
|
$sub_pattern = $this->getPattern($sub_id); |
|
1367
|
9 |
|
$sub_pattern['parent_op'] = $op; |
|
1368
|
9 |
|
$sub_type = $sub_pattern['type']; |
|
1369
|
9 |
|
$m = ('built_in_call' == $sub_type) ? 'getBuiltInCallSQL' : 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
1370
|
9 |
|
$m = str_replace('ExpressionExpression', 'Expression', $m); |
|
1371
|
9 |
|
$sub_r = method_exists($this, $m) ? $this->$m($sub_pattern, $context, $val_type, 'relational') : ''; |
|
1372
|
9 |
|
$r .= $r ? ' '.$op.' '.$sub_r : $sub_r; |
|
1373
|
|
|
} |
|
1374
|
|
|
|
|
1375
|
|
|
/* |
|
1376
|
|
|
* SQLite related adaption for relational expressions like ?w < 100 |
|
1377
|
|
|
* |
|
1378
|
|
|
* We have to cast the variable behind ?w to a number otherwise we don't get |
|
1379
|
|
|
* meaningful results. |
|
1380
|
|
|
*/ |
|
1381
|
9 |
|
if ($this->store->getDBObject() instanceof PDOSQLiteAdapter) { |
|
|
|
|
|
|
1382
|
|
|
// Regex to catch things like: ?w < 100, ?w > 20 |
|
1383
|
9 |
|
$regex = '/([T\_0-9]+\.o_comp)\s*[<>]{1}\s*[0-9]+/si'; |
|
1384
|
9 |
|
if (0 < preg_match_all($regex, $r, $matches)) { |
|
1385
|
3 |
|
foreach ($matches[1] as $variable) { |
|
1386
|
3 |
|
$r = str_replace($variable, 'CAST ('.$variable.' as float)', $r); |
|
1387
|
|
|
} |
|
1388
|
|
|
} |
|
1389
|
|
|
} |
|
1390
|
|
|
|
|
1391
|
9 |
|
return $r ? '('.$r.')' : $r; |
|
1392
|
|
|
} |
|
1393
|
|
|
|
|
1394
|
|
|
public function getAdditiveExpressionSQL($pattern, $context, $val_type = '') |
|
1395
|
|
|
{ |
|
1396
|
|
|
$r = ''; |
|
1397
|
|
|
$val_type = $this->detectExpressionValueType($pattern['patterns']); |
|
1398
|
|
|
foreach ($pattern['patterns'] as $sub_id) { |
|
1399
|
|
|
$sub_pattern = $this->getPattern($sub_id); |
|
1400
|
|
|
$sub_type = $sub_pattern['type'] ?? ''; |
|
1401
|
|
|
$m = ('built_in_call' == $sub_type) |
|
1402
|
|
|
? 'getBuiltInCallSQL' |
|
1403
|
|
|
: 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
1404
|
|
|
$m = str_replace('ExpressionExpression', 'Expression', $m); |
|
1405
|
|
|
$sub_r = method_exists($this, $m) |
|
1406
|
|
|
? $this->$m($sub_pattern, $context, $val_type, 'additive') |
|
1407
|
|
|
: ''; |
|
1408
|
|
|
$r .= $r ? ' '.$sub_r : $sub_r; |
|
1409
|
|
|
} |
|
1410
|
|
|
|
|
1411
|
|
|
return $r; |
|
1412
|
|
|
} |
|
1413
|
|
|
|
|
1414
|
|
|
public function getMultiplicativeExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
1415
|
|
|
{ |
|
1416
|
|
|
$r = ''; |
|
1417
|
|
|
$val_type = $this->detectExpressionValueType($pattern['patterns']); |
|
1418
|
|
|
foreach ($pattern['patterns'] as $sub_id) { |
|
1419
|
|
|
$sub_pattern = $this->getPattern($sub_id); |
|
1420
|
|
|
$sub_type = $sub_pattern['type']; |
|
1421
|
|
|
$m = ('built_in_call' == $sub_type) |
|
1422
|
|
|
? 'getBuiltInCallSQL' |
|
1423
|
|
|
: 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
1424
|
|
|
$m = str_replace('ExpressionExpression', 'Expression', $m); |
|
1425
|
|
|
$sub_r = method_exists($this, $m) |
|
1426
|
|
|
? $this->$m($sub_pattern, $context, $val_type, 'multiplicative') |
|
1427
|
|
|
: ''; |
|
1428
|
|
|
$r .= $r ? ' '.$sub_r : $sub_r; |
|
1429
|
|
|
} |
|
1430
|
|
|
|
|
1431
|
|
|
return $r; |
|
1432
|
|
|
} |
|
1433
|
|
|
|
|
1434
|
13 |
|
public function getVarExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
1435
|
|
|
{ |
|
1436
|
13 |
|
$var = $pattern['value']; |
|
1437
|
13 |
|
$info = $this->getVarTableInfos($var); |
|
1438
|
|
|
|
|
1439
|
13 |
|
$tbl = false; |
|
1440
|
13 |
|
if (isset($info['table'])) { |
|
1441
|
12 |
|
$tbl = $info['table']; |
|
1442
|
|
|
} |
|
1443
|
|
|
|
|
1444
|
13 |
|
if (!$tbl) { |
|
1445
|
|
|
/* might be an aggregate var */ |
|
1446
|
1 |
|
$vars = $this->infos['query']['result_vars']; |
|
1447
|
1 |
|
foreach ($vars as $test_var) { |
|
1448
|
1 |
|
if ($test_var['alias'] == $pattern['value']) { |
|
1449
|
1 |
|
return '`'.$pattern['value'].'`'; |
|
1450
|
|
|
} |
|
1451
|
|
|
} |
|
1452
|
|
|
|
|
1453
|
|
|
return ''; |
|
1454
|
|
|
} |
|
1455
|
12 |
|
$col = $info['col']; |
|
1456
|
12 |
|
$parentOp = $pattern['parent_op'] ?? ''; |
|
1457
|
12 |
|
if ('order' == $context && 'o' == $col) { |
|
1458
|
3 |
|
$tbl_alias = 'T_'.$tbl.'.o_comp'; |
|
1459
|
9 |
|
} elseif ('sameterm' == $context) { |
|
1460
|
|
|
$tbl_alias = 'T_'.$tbl.'.'.$col; |
|
1461
|
9 |
|
} elseif ('relational' == $parent_type && 'o' == $col && preg_match('/[\<\>]/', $parentOp)) { |
|
1462
|
3 |
|
$tbl_alias = 'T_'.$tbl.'.o_comp'; |
|
1463
|
|
|
} else { |
|
1464
|
6 |
|
$tbl_alias = 'V_'.$tbl.'_'.$col.'.val'; |
|
1465
|
6 |
|
if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
1466
|
6 |
|
$this->index['sub_joins'][] = $tbl_alias; |
|
|
|
|
|
|
1467
|
|
|
} |
|
1468
|
|
|
} |
|
1469
|
|
|
|
|
1470
|
12 |
|
$op = $pattern['operator'] ?? ''; |
|
1471
|
12 |
|
if (preg_match('/^(filter|and)/', $parent_type)) { |
|
1472
|
|
|
if ('!' == $op) { |
|
1473
|
|
|
$r = '((('.$tbl_alias.' = 0) AND (CONCAT("1", '.$tbl_alias.') != 1))'; /* 0 and no string */ |
|
1474
|
|
|
$r .= ' OR ('.$tbl_alias.' IN ("", "false")))'; /* or "", or "false" */ |
|
1475
|
|
|
} else { |
|
1476
|
|
|
$r = '(('.$tbl_alias.' != 0)'; /* not null */ |
|
1477
|
|
|
$r .= ' OR ((CONCAT("1", '.$tbl_alias.') = 1) AND ('.$tbl_alias.' NOT IN ("", "false"))))'; /* string, and not "" or "false" */ |
|
1478
|
|
|
} |
|
1479
|
|
|
} else { |
|
1480
|
12 |
|
$r = trim($op.' '.$tbl_alias); |
|
1481
|
12 |
|
if ('numeric' == $val_type) { |
|
1482
|
5 |
|
if (preg_match('/__(T|V|G)_(.+)$/', $context, $m)) { |
|
1483
|
|
|
$context_pattern_id = $m[2]; |
|
1484
|
|
|
$context_table_type = $m[1]; |
|
1485
|
|
|
} else { |
|
1486
|
5 |
|
$context_pattern_id = $pattern['id']; |
|
1487
|
5 |
|
$context_table_type = 'T'; |
|
1488
|
|
|
} |
|
1489
|
5 |
|
if ($this->isJoinedBefore($tbl, $context_pattern_id)) { |
|
|
|
|
|
|
1490
|
5 |
|
$add = ($tbl != $context_pattern_id) ? 1 : 0; |
|
1491
|
5 |
|
$add = (!$add && ('V' == $context_table_type)) ? 1 : 0; |
|
1492
|
5 |
|
if ($add) { |
|
1493
|
|
|
$this->addConstraintSQLEntry($context_pattern_id, '('.$r.' = "0" OR '.$r.'*1.0 != 0)'); |
|
1494
|
|
|
} |
|
1495
|
|
|
} |
|
1496
|
|
|
} |
|
1497
|
|
|
} |
|
1498
|
|
|
|
|
1499
|
12 |
|
return $r; |
|
1500
|
|
|
} |
|
1501
|
|
|
|
|
1502
|
1 |
|
public function getUriExpressionSQL($pattern) |
|
1503
|
|
|
{ |
|
1504
|
1 |
|
$val = $pattern['uri']; |
|
1505
|
1 |
|
$r = $pattern['operator']; |
|
1506
|
1 |
|
$r .= is_numeric($val) ? ' '.$val : ' "'.$this->store->getDBObject()->escape($val).'"'; |
|
1507
|
|
|
|
|
1508
|
1 |
|
return $r; |
|
1509
|
|
|
} |
|
1510
|
|
|
|
|
1511
|
12 |
|
public function getLiteralExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
1512
|
|
|
{ |
|
1513
|
12 |
|
$val = $pattern['value']; |
|
1514
|
12 |
|
$r = $pattern['operator']; |
|
1515
|
12 |
|
$datatype = $pattern['datatype'] ?? ''; |
|
1516
|
|
|
|
|
1517
|
12 |
|
if (is_numeric($val) && ($pattern['datatype'] ?? 0)) { |
|
1518
|
5 |
|
$r .= ' '.$val; |
|
1519
|
|
|
} elseif ( |
|
1520
|
7 |
|
preg_match('/^(true|false)$/i', $val) |
|
1521
|
7 |
|
&& 'http://www.w3.org/2001/XMLSchema#boolean' == $datatype |
|
1522
|
|
|
) { |
|
1523
|
|
|
$r .= ' '.strtoupper($val); |
|
1524
|
7 |
|
} elseif ('regex' == $parent_type) { |
|
1525
|
2 |
|
$sub_r = $this->store->getDBObject()->escape($val); |
|
1526
|
2 |
|
$r .= ' "'.preg_replace('/\x5c\x5c/', '\\', $sub_r).'"'; |
|
1527
|
|
|
} else { |
|
1528
|
5 |
|
$r .= ' "'.$this->store->getDBObject()->escape($val).'"'; |
|
1529
|
|
|
} |
|
1530
|
|
|
|
|
1531
|
12 |
|
$lang_dt = $pattern['lang'] ?? $pattern['datatype'] ?? ''; |
|
1532
|
12 |
|
if ($lang_dt) { |
|
1533
|
|
|
/* try table/alias via var in siblings */ |
|
1534
|
5 |
|
if ($var = $this->findSiblingVarExpression($pattern['id'])) { |
|
1535
|
5 |
|
if (isset($this->index['vars'][$var])) { |
|
1536
|
5 |
|
$infos = $this->index['vars'][$var]; |
|
1537
|
5 |
|
foreach ($infos as $info) { |
|
1538
|
5 |
|
if ('o' == $info['col']) { |
|
1539
|
5 |
|
$tbl = $info['table']; |
|
1540
|
5 |
|
$term_id = $this->getTermID($lang_dt); |
|
1541
|
5 |
|
if ('!=' != $pattern['operator']) { |
|
1542
|
5 |
|
if (preg_match('/__(T|V|G)_(.+)$/', $context, $m)) { |
|
1543
|
|
|
$context_pattern_id = $m[2]; |
|
1544
|
|
|
$context_table_type = $m[1]; |
|
|
|
|
|
|
1545
|
5 |
|
} elseif ('where' == $context) { |
|
1546
|
5 |
|
$context_pattern_id = $tbl; |
|
1547
|
|
|
} else { |
|
1548
|
|
|
$context_pattern_id = $pattern['id']; |
|
1549
|
|
|
} |
|
1550
|
|
|
// TODO better dependency check |
|
1551
|
5 |
|
if ($tbl == $context_pattern_id) { |
|
1552
|
5 |
|
if ($term_id || ('http://www.w3.org/2001/XMLSchema#integer' != $lang_dt)) { |
|
1553
|
|
|
/* skip, if simple int, but no id */ |
|
1554
|
|
|
$this->addConstraintSQLEntry($context_pattern_id, 'T_'.$tbl.'.o_lang_dt = '.$term_id.' /* '.preg_replace('/[\#\*\>]/', '::', $lang_dt).' */'); |
|
1555
|
|
|
} |
|
1556
|
|
|
} |
|
1557
|
|
|
} |
|
1558
|
5 |
|
break; |
|
1559
|
|
|
} |
|
1560
|
|
|
} |
|
1561
|
|
|
} |
|
1562
|
|
|
} |
|
1563
|
|
|
} |
|
1564
|
|
|
|
|
1565
|
12 |
|
return trim($r); |
|
1566
|
|
|
} |
|
1567
|
|
|
|
|
1568
|
5 |
|
public function findSiblingVarExpression($id) |
|
1569
|
|
|
{ |
|
1570
|
5 |
|
$pattern = $this->getPattern($id); |
|
1571
|
|
|
do { |
|
1572
|
5 |
|
$pattern = $this->getPattern($pattern['parent_id']); |
|
1573
|
5 |
|
} while ($pattern['parent_id'] && ('expression' != $pattern['type'])); |
|
1574
|
|
|
|
|
1575
|
5 |
|
$sub_patterns = $pattern['patterns'] ?? []; |
|
1576
|
5 |
|
foreach ($sub_patterns as $sub_id) { |
|
1577
|
5 |
|
$sub_pattern = $this->getPattern($sub_id); |
|
1578
|
5 |
|
if ('var' == $sub_pattern['type']) { |
|
1579
|
5 |
|
return $sub_pattern['value']; |
|
1580
|
|
|
} |
|
1581
|
|
|
} |
|
1582
|
|
|
|
|
1583
|
|
|
return ''; |
|
1584
|
|
|
} |
|
1585
|
|
|
|
|
1586
|
|
|
public function getFunctionExpressionSQL($pattern, $context, $val_type = '', $parent_type = '') |
|
1587
|
|
|
{ |
|
1588
|
|
|
$fnc_uri = $pattern['uri']; |
|
1589
|
|
|
$op = $pattern['operator'] ?? ''; |
|
1590
|
|
|
if ($op) { |
|
1591
|
|
|
$op .= ' '; |
|
1592
|
|
|
} |
|
1593
|
|
|
|
|
1594
|
|
|
/* simple type conversions */ |
|
1595
|
|
|
if (0 === strpos($fnc_uri, 'http://www.w3.org/2001/XMLSchema#')) { |
|
1596
|
|
|
return $op.$this->getExpressionSQL($pattern['args'][0], $context, $val_type, $parent_type); |
|
1597
|
|
|
} |
|
1598
|
|
|
|
|
1599
|
|
|
return ''; |
|
1600
|
|
|
} |
|
1601
|
|
|
|
|
1602
|
18 |
|
public function getBuiltInCallSQL($pattern, $context) |
|
1603
|
|
|
{ |
|
1604
|
18 |
|
$call = $pattern['call']; |
|
1605
|
18 |
|
$m = 'get'.ucfirst($call).'CallSQL'; |
|
1606
|
18 |
|
if (method_exists($this, $m)) { |
|
1607
|
18 |
|
return $this->$m($pattern, $context); |
|
1608
|
|
|
} else { |
|
1609
|
|
|
throw new Exception('Unknown built-in call "'.$call.'"'); |
|
1610
|
|
|
} |
|
1611
|
|
|
|
|
1612
|
|
|
return ''; |
|
|
|
|
|
|
1613
|
|
|
} |
|
1614
|
|
|
|
|
1615
|
2 |
|
public function getBoundCallSQL($pattern, $context) |
|
1616
|
|
|
{ |
|
1617
|
2 |
|
$r = ''; |
|
|
|
|
|
|
1618
|
2 |
|
$var = $pattern['args'][0]['value']; |
|
1619
|
2 |
|
$info = $this->getVarTableInfos($var); |
|
1620
|
2 |
|
if (!$tbl = $info['table']) { |
|
1621
|
|
|
return ''; |
|
1622
|
|
|
} |
|
1623
|
2 |
|
$col = $info['col']; |
|
1624
|
2 |
|
$tbl_alias = 'T_'.$tbl.'.'.$col; |
|
1625
|
2 |
|
if ('!' == $pattern['operator']) { |
|
1626
|
|
|
return $tbl_alias.' IS NULL'; |
|
1627
|
|
|
} |
|
1628
|
|
|
|
|
1629
|
2 |
|
return $tbl_alias.' IS NOT NULL'; |
|
1630
|
|
|
} |
|
1631
|
|
|
|
|
1632
|
8 |
|
public function getHasTypeCallSQL($pattern, $context, $type) |
|
1633
|
|
|
{ |
|
1634
|
8 |
|
$r = ''; |
|
|
|
|
|
|
1635
|
8 |
|
$var = $pattern['args'][0]['value']; |
|
1636
|
8 |
|
$info = $this->getVarTableInfos($var); |
|
1637
|
8 |
|
if (!$tbl = $info['table']) { |
|
1638
|
|
|
return ''; |
|
1639
|
|
|
} |
|
1640
|
8 |
|
$col = $info['col']; |
|
1641
|
8 |
|
$tbl_alias = 'T_'.$tbl.'.'.$col.'_type'; |
|
1642
|
|
|
|
|
1643
|
8 |
|
$operator = $pattern['operator'] ?? ''; |
|
1644
|
|
|
|
|
1645
|
8 |
|
return $tbl_alias.' '.$operator.'= '.$type; |
|
1646
|
|
|
} |
|
1647
|
|
|
|
|
1648
|
2 |
|
public function getIsliteralCallSQL($pattern, $context) |
|
1649
|
|
|
{ |
|
1650
|
2 |
|
return $this->getHasTypeCallSQL($pattern, $context, 2); |
|
1651
|
|
|
} |
|
1652
|
|
|
|
|
1653
|
2 |
|
public function getIsblankCallSQL($pattern, $context) |
|
1654
|
|
|
{ |
|
1655
|
2 |
|
return $this->getHasTypeCallSQL($pattern, $context, 1); |
|
1656
|
|
|
} |
|
1657
|
|
|
|
|
1658
|
2 |
|
public function getIsiriCallSQL($pattern, $context) |
|
1659
|
|
|
{ |
|
1660
|
2 |
|
return $this->getHasTypeCallSQL($pattern, $context, 0); |
|
1661
|
|
|
} |
|
1662
|
|
|
|
|
1663
|
2 |
|
public function getIsuriCallSQL($pattern, $context) |
|
1664
|
|
|
{ |
|
1665
|
2 |
|
return $this->getHasTypeCallSQL($pattern, $context, 0); |
|
1666
|
|
|
} |
|
1667
|
|
|
|
|
1668
|
2 |
|
public function getStrCallSQL($pattern, $context) |
|
1669
|
|
|
{ |
|
1670
|
2 |
|
$sub_pattern = $pattern['args'][0]; |
|
1671
|
2 |
|
$sub_type = $sub_pattern['type']; |
|
1672
|
2 |
|
$m = 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
1673
|
2 |
|
if (method_exists($this, $m)) { |
|
1674
|
2 |
|
return $this->$m($sub_pattern, $context); |
|
1675
|
|
|
} |
|
1676
|
|
|
} |
|
1677
|
|
|
|
|
1678
|
|
|
public function getFunctionCallSQL($pattern, $context) |
|
1679
|
|
|
{ |
|
1680
|
|
|
$f_uri = $pattern['uri']; |
|
1681
|
|
|
if (preg_match('/(integer|double|float|string)$/', $f_uri)) {/* skip conversions */ |
|
1682
|
|
|
$sub_pattern = $pattern['args'][0]; |
|
1683
|
|
|
$sub_type = $sub_pattern['type']; |
|
1684
|
|
|
$m = 'get'.ucfirst($sub_type).'ExpressionSQL'; |
|
1685
|
|
|
if (method_exists($this, $m)) { |
|
1686
|
|
|
return $this->$m($sub_pattern, $context); |
|
1687
|
|
|
} |
|
1688
|
|
|
} |
|
1689
|
|
|
} |
|
1690
|
|
|
|
|
1691
|
4 |
|
public function getLangDatatypeCallSQL($pattern, $context) |
|
1692
|
|
|
{ |
|
1693
|
4 |
|
$r = ''; |
|
|
|
|
|
|
1694
|
4 |
|
if (isset($pattern['patterns'])) { /* proceed with first argument only (assumed as base type for type promotion) */ |
|
1695
|
|
|
$sub_pattern = ['args' => [$pattern['patterns'][0]]]; |
|
1696
|
|
|
|
|
1697
|
|
|
return $this->getLangDatatypeCallSQL($sub_pattern, $context); |
|
1698
|
|
|
} |
|
1699
|
4 |
|
if (!isset($pattern['args'])) { |
|
1700
|
|
|
return 'FALSE'; |
|
1701
|
|
|
} |
|
1702
|
4 |
|
$sub_type = $pattern['args'][0]['type']; |
|
1703
|
4 |
|
if ('var' != $sub_type) { |
|
1704
|
|
|
return $this->getLangDatatypeCallSQL($pattern['args'][0], $context); |
|
1705
|
|
|
} |
|
1706
|
4 |
|
$var = $pattern['args'][0]['value']; |
|
1707
|
4 |
|
$info = $this->getVarTableInfos($var); |
|
1708
|
4 |
|
if (!$tbl = $info['table']) { |
|
1709
|
|
|
return ''; |
|
1710
|
|
|
} |
|
1711
|
4 |
|
$col = 'o_lang_dt'; |
|
1712
|
4 |
|
$tbl_alias = 'V_'.$tbl.'_'.$col.'.val'; |
|
1713
|
4 |
|
if (!\in_array($tbl_alias, $this->index['sub_joins'])) { |
|
1714
|
4 |
|
$this->index['sub_joins'][] = $tbl_alias; |
|
|
|
|
|
|
1715
|
|
|
} |
|
1716
|
4 |
|
$op = $pattern['operator'] ?? ''; |
|
1717
|
4 |
|
$r = trim($op.' '.$tbl_alias); |
|
1718
|
|
|
|
|
1719
|
4 |
|
return $r; |
|
1720
|
|
|
} |
|
1721
|
|
|
|
|
1722
|
1 |
|
public function getDatatypeCallSQL($pattern, $context) |
|
1723
|
|
|
{ |
|
1724
|
1 |
|
return '/* datatype call */ '.$this->getLangDatatypeCallSQL($pattern, $context); |
|
1725
|
|
|
} |
|
1726
|
|
|
|
|
1727
|
3 |
|
public function getLangCallSQL($pattern, $context) |
|
1728
|
|
|
{ |
|
1729
|
3 |
|
return '/* language call */ '.$this->getLangDatatypeCallSQL($pattern, $context); |
|
1730
|
|
|
} |
|
1731
|
|
|
|
|
1732
|
2 |
|
public function getLangmatchesCallSQL($pattern, $context) |
|
1733
|
|
|
{ |
|
1734
|
2 |
|
if (2 == \count($pattern['args'])) { |
|
1735
|
2 |
|
$arg_1 = $pattern['args'][0]; |
|
1736
|
2 |
|
$arg_2 = $pattern['args'][1]; |
|
1737
|
2 |
|
$sub_r_1 = $this->getBuiltInCallSQL($arg_1, $context); /* adds value join */ |
|
1738
|
2 |
|
$sub_r_2 = $this->getExpressionSQL($arg_2, $context); |
|
1739
|
2 |
|
$op = $pattern['operator'] ?? ''; |
|
1740
|
2 |
|
if (preg_match('/^([\"\'])([^\'\"]+)/', $sub_r_2, $m)) { |
|
1741
|
|
|
if ('*' == $m[2]) { |
|
1742
|
|
|
$r = '!' == $op |
|
1743
|
|
|
? 'NOT ('.$sub_r_1.' REGEXP "^[a-zA-Z\-]+$"'.')' |
|
1744
|
|
|
: $sub_r_1.' REGEXP "^[a-zA-Z\-]+$"'; |
|
1745
|
|
|
} else { |
|
1746
|
|
|
$r = ('!' == $op) ? $sub_r_1.' NOT LIKE '.$m[1].$m[2].'%'.$m[1] : $sub_r_1.' LIKE '.$m[1].$m[2].'%'.$m[1]; |
|
1747
|
|
|
} |
|
1748
|
|
|
} else { |
|
1749
|
2 |
|
$r = ('!' == $op) ? $sub_r_1.' NOT LIKE CONCAT('.$sub_r_2.', "%")' : $sub_r_1.' LIKE CONCAT('.$sub_r_2.', "%")'; |
|
1750
|
|
|
} |
|
1751
|
|
|
|
|
1752
|
2 |
|
return $r; |
|
1753
|
|
|
} |
|
1754
|
|
|
|
|
1755
|
|
|
return ''; |
|
1756
|
|
|
} |
|
1757
|
|
|
|
|
1758
|
|
|
/** |
|
1759
|
|
|
* @todo not in use, so remove? |
|
1760
|
|
|
*/ |
|
1761
|
|
|
public function getSametermCallSQL($pattern, $context) |
|
1762
|
|
|
{ |
|
1763
|
|
|
if (2 == \count($pattern['args'])) { |
|
1764
|
|
|
$arg_1 = $pattern['args'][0]; |
|
1765
|
|
|
$arg_2 = $pattern['args'][1]; |
|
1766
|
|
|
$sub_r_1 = $this->getExpressionSQL($arg_1, 'sameterm'); |
|
1767
|
|
|
$sub_r_2 = $this->getExpressionSQL($arg_2, 'sameterm'); |
|
1768
|
|
|
$op = $pattern['operator'] ?? ''; |
|
1769
|
|
|
$r = $sub_r_1.' '.$op.'= '.$sub_r_2; |
|
1770
|
|
|
|
|
1771
|
|
|
return $r; |
|
1772
|
|
|
} |
|
1773
|
|
|
|
|
1774
|
|
|
return ''; |
|
1775
|
|
|
} |
|
1776
|
|
|
|
|
1777
|
2 |
|
public function getRegexCallSQL($pattern, $context) |
|
1778
|
|
|
{ |
|
1779
|
2 |
|
$ac = \count($pattern['args']); |
|
1780
|
2 |
|
if ($ac >= 2) { |
|
1781
|
2 |
|
foreach ($pattern['args'] as $i => $arg) { |
|
1782
|
2 |
|
$var = 'sub_r_'.($i + 1); |
|
1783
|
2 |
|
$$var = $this->getExpressionSQL($arg, $context, '', 'regex'); |
|
1784
|
|
|
} |
|
1785
|
2 |
|
$sub_r_3 = (isset($sub_r_3) && preg_match('/[\"\'](.+)[\"\']/', $sub_r_3, $m)) ? strtolower($m[1]) : ''; |
|
|
|
|
|
|
1786
|
2 |
|
$operator = $pattern['operator'] ?? ''; |
|
1787
|
2 |
|
$op = '!' == $operator ? ' NOT' : ''; |
|
1788
|
2 |
|
if (!$sub_r_1 || !$sub_r_2) { |
|
|
|
|
|
|
1789
|
|
|
return ''; |
|
1790
|
|
|
} |
|
1791
|
2 |
|
$is_simple_search = preg_match('/^[\(\"]+(\^)?([a-z0-9\_\-\s]+)(\$)?[\)\"]+$/is', $sub_r_2, $m); |
|
|
|
|
|
|
1792
|
2 |
|
$is_simple_search = preg_match('/^[\(\"]+(\^)?([^\\\*\[\]\}\{\(\)\"\'\?\+\.]+)(\$)?[\)\"]+$/is', $sub_r_2, $m); |
|
1793
|
2 |
|
$is_o_search = preg_match('/o\.val\)*$/', $sub_r_1); |
|
1794
|
|
|
/* fulltext search (may have "|") */ |
|
1795
|
2 |
|
if ($is_simple_search && $is_o_search && !$op && (\strlen($m[2]) > 8)) { |
|
1796
|
|
|
/* MATCH variations */ |
|
1797
|
|
|
if (($val_parts = preg_split('/\|/', $m[2]))) { |
|
1798
|
|
|
return 'MATCH('.trim($sub_r_1, '()').') AGAINST("'.implode(' ', $val_parts).'")'; |
|
1799
|
|
|
} else { |
|
1800
|
|
|
return 'MATCH('.trim($sub_r_1, '()').') AGAINST("'.$m[2].'")'; |
|
1801
|
|
|
} |
|
1802
|
|
|
} |
|
1803
|
2 |
|
if (preg_match('/\|/', $sub_r_2)) { |
|
1804
|
|
|
$is_simple_search = 0; |
|
1805
|
|
|
} |
|
1806
|
|
|
/* LIKE */ |
|
1807
|
2 |
|
if ($is_simple_search && ('i' == $sub_r_3)) { |
|
1808
|
1 |
|
$sub_r_2 = $m[1] ? $m[2] : '%'.$m[2]; |
|
1809
|
1 |
|
$sub_r_2 .= isset($m[3]) && $m[3] ? '' : '%'; |
|
1810
|
|
|
|
|
1811
|
1 |
|
return $sub_r_1.$op.' LIKE "'.$sub_r_2.'"'; |
|
1812
|
|
|
} |
|
1813
|
|
|
/* REGEXP */ |
|
1814
|
1 |
|
$opt = ''; |
|
1815
|
1 |
|
if (!$this->store->getDBObject() instanceof PDOSQLiteAdapter) { |
|
|
|
|
|
|
1816
|
|
|
$opt = ('i' == $sub_r_3) ? '' : 'BINARY '; |
|
1817
|
|
|
} |
|
1818
|
|
|
|
|
1819
|
1 |
|
return $sub_r_1.$op.' REGEXP '.$opt.$sub_r_2; |
|
1820
|
|
|
} |
|
1821
|
|
|
|
|
1822
|
|
|
return ''; |
|
1823
|
|
|
} |
|
1824
|
|
|
|
|
1825
|
102 |
|
public function getGROUPSQL() |
|
1826
|
|
|
{ |
|
1827
|
102 |
|
$r = ''; |
|
1828
|
102 |
|
$nl = "\n"; |
|
1829
|
102 |
|
$infos = $this->infos['query']['group_infos'] ?? []; |
|
1830
|
102 |
|
foreach ($infos as $info) { |
|
1831
|
5 |
|
$var = $info['value']; |
|
1832
|
5 |
|
if ($tbl_infos = $this->getVarTableInfos($var, 0)) { |
|
1833
|
5 |
|
$tbl_alias = $tbl_infos['table_alias']; |
|
1834
|
5 |
|
$r .= $r ? ', ' : 'GROUP BY '; |
|
1835
|
5 |
|
$r .= $tbl_alias; |
|
1836
|
|
|
} |
|
1837
|
|
|
} |
|
1838
|
102 |
|
$hr = ''; |
|
1839
|
102 |
|
foreach ($this->index['havings'] as $having) { |
|
1840
|
|
|
$hr .= $hr ? ' AND' : ' HAVING'; |
|
1841
|
|
|
$hr .= '('.$having.')'; |
|
1842
|
|
|
} |
|
1843
|
102 |
|
$r .= $hr; |
|
1844
|
|
|
|
|
1845
|
102 |
|
return $r ? $nl.$r : $r; |
|
1846
|
|
|
} |
|
1847
|
|
|
|
|
1848
|
102 |
|
public function getORDERSQL() |
|
1849
|
|
|
{ |
|
1850
|
102 |
|
$r = ''; |
|
1851
|
102 |
|
$nl = "\n"; |
|
1852
|
102 |
|
$infos = $this->infos['query']['order_infos'] ?? []; |
|
1853
|
102 |
|
foreach ($infos as $info) { |
|
1854
|
4 |
|
$type = $info['type']; |
|
1855
|
4 |
|
$ms = [ |
|
1856
|
|
|
'expression' => 'getExpressionSQL', |
|
1857
|
|
|
'built_in_call' => 'getBuiltInCallSQL', |
|
1858
|
|
|
'function_call' => 'getFunctionCallSQL', |
|
1859
|
|
|
]; |
|
1860
|
4 |
|
$m = isset($ms[$type]) ? $ms[$type] : 'get'.ucfirst($type).'ExpressionSQL'; |
|
1861
|
4 |
|
if (method_exists($this, $m)) { |
|
1862
|
4 |
|
$sub_r = '('.$this->$m($info, 'order').')'; |
|
1863
|
4 |
|
$direction = $info['direction'] ?? ''; |
|
1864
|
4 |
|
$sub_r .= 'desc' == $direction ? ' DESC' : ''; |
|
1865
|
4 |
|
$r .= $r ? ','.$nl.$sub_r : $sub_r; |
|
1866
|
|
|
} |
|
1867
|
|
|
} |
|
1868
|
|
|
|
|
1869
|
102 |
|
return $r ? $nl.'ORDER BY '.$r : ''; |
|
1870
|
|
|
} |
|
1871
|
|
|
|
|
1872
|
102 |
|
public function getLIMITSQL() |
|
1873
|
|
|
{ |
|
1874
|
102 |
|
$r = ''; |
|
1875
|
102 |
|
$nl = "\n"; |
|
1876
|
102 |
|
$limit = $this->infos['query']['limit'] ?? -1; |
|
1877
|
102 |
|
$offset = $this->infos['query']['offset'] ?? -1; |
|
1878
|
102 |
|
if (-1 != $limit) { |
|
1879
|
6 |
|
$offset = (-1 == $offset) ? 0 : $this->store->getDBObject()->escape($offset); |
|
1880
|
6 |
|
$r = 'LIMIT '.$offset.','.$limit; |
|
1881
|
96 |
|
} elseif (-1 != $offset) { |
|
1882
|
|
|
// TODO is that if-else required with SQLite? |
|
1883
|
|
|
// mysql doesn't support stand-alone offsets |
|
1884
|
1 |
|
$r = 'LIMIT '.$this->store->getDBObject()->escape($offset).',999999999999'; |
|
1885
|
|
|
} |
|
1886
|
|
|
|
|
1887
|
102 |
|
return $r ? $nl.$r : ''; |
|
1888
|
|
|
} |
|
1889
|
|
|
|
|
1890
|
100 |
|
public function getValueSQL($q_tbl, $q_sql) |
|
1891
|
|
|
{ |
|
1892
|
100 |
|
$r = ''; |
|
1893
|
|
|
/* result vars */ |
|
1894
|
100 |
|
$vars = $this->infos['query']['result_vars']; |
|
1895
|
100 |
|
$nl = "\n"; |
|
1896
|
100 |
|
$v_tbls = ['JOIN' => [], 'LEFT JOIN' => []]; |
|
1897
|
100 |
|
$vc = 1; |
|
1898
|
100 |
|
foreach ($vars as $var) { |
|
1899
|
100 |
|
$var_name = $var['var']; |
|
1900
|
100 |
|
$r .= $r ? ','.$nl.' ' : ' '; |
|
1901
|
100 |
|
$col = ''; |
|
1902
|
100 |
|
$tbl = ''; |
|
1903
|
100 |
|
if ('*' != $var_name) { |
|
1904
|
100 |
|
if (\in_array($var_name, $this->infos['null_vars'])) { |
|
1905
|
|
|
if (isset($this->initial_index['vars'][$var_name])) { |
|
1906
|
|
|
$col = $this->initial_index['vars'][$var_name][0]['col']; |
|
1907
|
|
|
$tbl = $this->initial_index['vars'][$var_name][0]['table']; |
|
1908
|
|
|
} |
|
1909
|
|
|
if (isset($this->initial_index['graph_vars'][$var_name])) { |
|
1910
|
|
|
$col = 'g'; |
|
1911
|
|
|
$tbl = $this->initial_index['graph_vars'][$var_name][0]['table']; |
|
1912
|
|
|
} |
|
1913
|
100 |
|
} elseif (isset($this->index['vars'][$var_name])) { |
|
1914
|
100 |
|
$col = $this->index['vars'][$var_name][0]['col']; |
|
1915
|
100 |
|
$tbl = $this->index['vars'][$var_name][0]['table']; |
|
1916
|
|
|
} |
|
1917
|
|
|
} |
|
1918
|
100 |
|
if ($var['aggregate']) { |
|
1919
|
10 |
|
$r .= 'TMP.`'.$var['alias'].'`'; |
|
1920
|
|
|
} else { |
|
1921
|
99 |
|
$join_type = \in_array($tbl, array_merge($this->index['from'], $this->index['join'])) ? 'JOIN' : 'LEFT JOIN'; /* val may be NULL */ |
|
1922
|
99 |
|
$v_tbls[$join_type][] = ['t_col' => $col, 'q_col' => $var_name, 'vc' => $vc]; |
|
1923
|
99 |
|
$r .= 'V'.$vc.'.val AS `'.$var_name.'`'; |
|
1924
|
99 |
|
if (\in_array($col, ['s', 'o'])) { |
|
1925
|
97 |
|
if (strpos($q_sql, '`'.$var_name.' type`')) { |
|
1926
|
97 |
|
$r .= ', '.$nl.' TMP.`'.$var_name.' type` AS `'.$var_name.' type`'; |
|
1927
|
|
|
//$r .= ', ' . $nl . ' CASE TMP.`' . $var_name . ' type` WHEN 2 THEN "literal" WHEN 1 THEN "bnode" ELSE "uri" END AS `' . $var_name . ' type`'; |
|
1928
|
|
|
} else { |
|
1929
|
|
|
$r .= ', '.$nl.' NULL AS `'.$var_name.' type`'; |
|
1930
|
|
|
} |
|
1931
|
|
|
} |
|
1932
|
99 |
|
++$vc; |
|
1933
|
99 |
|
if ('o' == $col) { |
|
1934
|
89 |
|
$v_tbls[$join_type][] = ['t_col' => 'id', 'q_col' => $var_name.' lang_dt', 'vc' => $vc]; |
|
1935
|
89 |
|
if (strpos($q_sql, '`'.$var_name.' lang_dt`')) { |
|
1936
|
89 |
|
$r .= ', '.$nl.' V'.$vc.'.val AS `'.$var_name.' lang_dt`'; |
|
1937
|
89 |
|
++$vc; |
|
1938
|
|
|
} else { |
|
1939
|
|
|
$r .= ', '.$nl.' NULL AS `'.$var_name.' lang_dt`'; |
|
1940
|
|
|
} |
|
1941
|
|
|
} |
|
1942
|
|
|
} |
|
1943
|
|
|
} |
|
1944
|
100 |
|
if (!$r) { |
|
1945
|
2 |
|
$r = '*'; |
|
1946
|
|
|
} |
|
1947
|
|
|
/* from */ |
|
1948
|
100 |
|
$r .= $nl.'FROM ('.$q_tbl.' TMP)'; |
|
1949
|
100 |
|
foreach (['JOIN', 'LEFT JOIN'] as $join_type) { |
|
1950
|
100 |
|
foreach ($v_tbls[$join_type] as $v_tbl) { |
|
1951
|
99 |
|
$tbl = $this->getValueTable($v_tbl['t_col']); |
|
1952
|
99 |
|
$var_name = preg_replace('/^([^\s]+)(.*)$/', '\\1', $v_tbl['q_col']); |
|
1953
|
99 |
|
$cur_join_type = \in_array($var_name, $this->infos['null_vars']) ? 'LEFT JOIN' : $join_type; |
|
1954
|
99 |
|
if (!strpos($q_sql, '`'.$v_tbl['q_col'].'`')) { |
|
1955
|
1 |
|
continue; |
|
1956
|
|
|
} |
|
1957
|
|
|
$r .= $nl |
|
1958
|
99 |
|
.' '.$cur_join_type |
|
1959
|
99 |
|
.' '.$tbl.' V'.$v_tbl['vc'] |
|
1960
|
99 |
|
.' ON ((V'.$v_tbl['vc'].'.id = TMP.`'.$v_tbl['q_col'].'`))'; |
|
1961
|
|
|
} |
|
1962
|
|
|
} |
|
1963
|
|
|
/* create pos columns, id needed */ |
|
1964
|
100 |
|
$orderInfos = $this->infos['query']['order_infos'] ?? []; |
|
1965
|
100 |
|
if ($orderInfos) { |
|
1966
|
4 |
|
$r .= $nl.' ORDER BY TMPPOS'; |
|
1967
|
|
|
} |
|
1968
|
|
|
|
|
1969
|
100 |
|
return 'SELECT'.$nl.$r; |
|
1970
|
|
|
} |
|
1971
|
|
|
} |
|
1972
|
|
|
|
sweetrdf /
in-memory-store-sqlite
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