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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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class ConstructQueryHandler extends SelectQueryHandler |
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{ |
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public function runQuery($infos) |
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{ |
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$this->infos = $infos; |
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$this->buildResultVars(); |
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$this->infos['query']['distinct'] = 1; |
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$sub_r = parent::runQuery($this->infos); |
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$rf = $this->v('result_format', '', $infos); |
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if (\in_array($rf, ['sql', 'structure', 'index'])) { |
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return $sub_r; |
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} |
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return $this->getResultIndex($sub_r); |
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} |
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public function buildResultVars() |
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{ |
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$r = []; |
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foreach ($this->infos['query']['construct_triples'] as $t) { |
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foreach (['s', 'p', 'o'] as $term) { |
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if ('var' == $t[$term.'_type']) { |
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if (!\in_array($t[$term], $r)) { |
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$r[] = ['var' => $t[$term], 'aggregate' => '', 'alias' => '']; |
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} |
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} |
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} |
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} |
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$this->infos['query']['result_vars'] = $r; |
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} |
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public function getResultIndex($qr) |
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{ |
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$r = []; |
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$added = []; |
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$rows = $this->v('rows', [], $qr); |
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$cts = $this->infos['query']['construct_triples']; |
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$bnc = 0; |
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foreach ($rows as $row) { |
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++$bnc; |
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foreach ($cts as $ct) { |
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$skip_t = 0; |
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$t = []; |
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foreach (['s', 'p', 'o'] as $term) { |
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$val = $ct[$term]; |
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$type = $ct[$term.'_type']; |
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$val = ('bnode' == $type) ? $val.$bnc : $val; |
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if ('var' == $type) { |
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$skip_t = !isset($row[$val]) ? 1 : $skip_t; |
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$type = !$skip_t ? $row[$val.' type'] : ''; |
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$val = (!$skip_t) ? $row[$val] : ''; |
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} |
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$t[$term] = $val; |
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$t[$term.'_type'] = $type; |
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if (isset($row[$ct[$term].' lang'])) { |
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$t[$term.'_lang'] = $row[$ct[$term].' lang']; |
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} |
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if (isset($row[$ct[$term].' datatype'])) { |
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$t[$term.'_datatype'] = $row[$ct[$term].' datatype']; |
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} |
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} |
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if (!$skip_t) { |
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$s = $t['s']; |
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$p = $t['p']; |
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$o = $t['o']; |
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if (!isset($r[$s])) { |
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$r[$s] = []; |
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} |
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if (!isset($r[$s][$p])) { |
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$r[$s][$p] = []; |
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} |
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$o = ['value' => $o]; |
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foreach (['lang', 'type', 'datatype'] as $suffix) { |
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if (isset($t['o_'.$suffix]) && $t['o_'.$suffix]) { |
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$o[$suffix] = $t['o_'.$suffix]; |
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} |
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} |
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if (!isset($added[md5($s.' '.$p.' '.serialize($o))])) { |
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$r[$s][$p][] = $o; |
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$added[md5($s.' '.$p.' '.serialize($o))] = 1; |
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} |
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} |
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} |
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} |
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return $r; |
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} |
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} |
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sweetrdf /
in-memory-store-sqlite
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