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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\Parser; |
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use sweetrdf\InMemoryStoreSqlite\NamespaceHelper; |
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use sweetrdf\InMemoryStoreSqlite\StringReader; |
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abstract class BaseParser |
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{ |
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/** |
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* @var array |
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*/ |
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protected $added_triples; |
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protected string $base; |
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protected string $bnode_id; |
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protected array $blocks; |
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private array $errors = []; |
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/** |
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* @var array<string, string> |
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*/ |
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protected array $prefixes; |
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/** |
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* Query infos container. |
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*/ |
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protected array $r = []; |
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protected array $triples = []; |
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protected int $t_count = 0; |
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public function __construct() |
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{ |
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// TODO pass logger as parameter |
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$this->reader = new StringReader(); |
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/* |
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* @todo make it a constructor param |
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*/ |
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$this->prefixes = (new NamespaceHelper())->getNamespaces(); |
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// generates random prefix for blank nodes |
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$this->bnode_prefix = bin2hex(random_bytes(4)).'b'; |
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$this->bnode_id = 0; |
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} |
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/** |
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* @todo replace by Logger |
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*/ |
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protected function addError(string $error): void |
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{ |
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$this->errors[] = $error; |
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} |
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/** |
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* @todo replace by Logger |
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*/ |
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106 |
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public function getErrors(): array |
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{ |
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return $this->errors; |
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} |
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public function getQueryInfos() |
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{ |
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return $this->r; |
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} |
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public function getTriples() |
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{ |
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return $this->triples; |
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} |
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public function getSimpleIndex($flatten_objects = 1, $vals = ''): array |
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{ |
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return $this->_getSimpleIndex($this->getTriples(), $flatten_objects, $vals); |
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} |
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/** |
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* @todo port from ARC2::getSimpleIndex; refactor and merge it with $this->getSimpleIndex |
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*/ |
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private function _getSimpleIndex($triples, $flatten_objects = 1, $vals = ''): array |
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{ |
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$r = []; |
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foreach ($triples as $t) { |
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$skip_t = 0; |
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foreach (['s', 'p', 'o'] as $term) { |
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$$term = $t[$term]; |
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/* template var */ |
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if (isset($t[$term.'_type']) && ('var' == $t[$term.'_type'])) { |
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$val = isset($vals[$$term]) ? $vals[$$term] : ''; |
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$skip_t = isset($vals[$$term]) ? $skip_t : 1; |
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$type = ''; |
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$type = !$type && isset($vals[$$term.' type']) ? $vals[$$term.' type'] : $type; |
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$type = !$type && preg_match('/^\_\:/', $val) ? 'bnode' : $type; |
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if ('o' == $term) { |
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$type = !$type && (preg_match('/\s/s', $val) || !preg_match('/\:/', $val)) ? 'literal' : $type; |
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$type = !$type && !preg_match('/[\/]/', $val) ? 'literal' : $type; |
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} |
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$type = !$type ? 'uri' : $type; |
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$t[$term.'_type'] = $type; |
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$$term = $val; |
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} |
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} |
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if ($skip_t) { |
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continue; |
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} |
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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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if ($flatten_objects) { |
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if (!\in_array($o, $r[$s][$p])) { |
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$r[$s][$p][] = $o; |
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} |
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} else { |
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$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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} elseif (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 (!\in_array($o, $r[$s][$p])) { |
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$r[$s][$p][] = $o; |
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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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