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<?php |
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/** |
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* Copyright (c) 2012-2013 Aalto University and University of Helsinki |
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* MIT License |
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* see LICENSE.txt for more information |
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*/ |
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/** |
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* Generates SPARQL queries and provides access to the SPARQL endpoint. |
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*/ |
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class GenericSparql { |
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/** |
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* A SPARQL Client eg. an EasyRDF instance. |
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* @property EasyRdf_Sparql_Client $client |
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*/ |
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protected $client; |
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/** |
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* Graph uri. |
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* @property string $graph |
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*/ |
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protected $graph; |
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/** |
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* A SPARQL query graph part template. |
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* @property string $graph |
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*/ |
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protected $graphClause; |
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/** |
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* Model instance. |
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* @property Model $model |
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*/ |
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protected $model; |
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/** |
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* Requires the following three parameters. |
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* @param string $endpoint SPARQL endpoint address. |
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* @param object $graph an EasyRDF SPARQL graph instance. |
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* @param object $model a Model instance. |
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*/ |
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public function __construct($endpoint, $graph, $model) { |
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// if special cache control (typically no-cache) was requested by the |
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// client, set the same type of cache control headers also in subsequent |
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// in the SPARQL requests (this is useful for performance testing) |
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$cache_control = filter_input(INPUT_SERVER, 'HTTP_CACHE_CONTROL', FILTER_SANITIZE_STRING); |
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$pragma = filter_input(INPUT_SERVER, 'HTTP_PRAGMA', FILTER_SANITIZE_STRING); |
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if ($cache_control !== null || $pragma !== null) { |
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$val = $pragma !== null ? $pragma : $cache_control; |
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// configure the HTTP client used by EasyRdf_Sparql_Client |
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$httpclient = EasyRdf_Http::getDefaultHttpClient(); |
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$httpclient->setHeaders('Cache-Control', $val); |
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EasyRdf_Http::setDefaultHttpClient($httpclient); // actually redundant.. |
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} |
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// create the EasyRDF SPARQL client instance to use |
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$this->client = new EasyRdf_Sparql_Client($endpoint); |
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$this->graph = $graph; |
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$this->model = $model; |
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// set graphClause so that it can be used by all queries |
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if ($this->isDefaultEndpoint()) // default endpoint; query any graph (and catch it in a variable) |
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{ |
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$this->graphClause = "GRAPH $graph"; |
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} elseif ($graph) // query a specific graph |
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{ |
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$this->graphClause = "GRAPH <$graph>"; |
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} else // query the default graph |
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{ |
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$this->graphClause = ""; |
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} |
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} |
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/** |
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* Return true if this is the default SPARQL endpoint, used as the facade to query |
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* all vocabularies. |
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*/ |
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protected function isDefaultEndpoint() { |
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return $this->graph[0] == '?'; |
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} |
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/** |
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* Returns the graph instance |
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* @return object EasyRDF graph instance. |
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*/ |
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public function getGraph() { |
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return $this->graph; |
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} |
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/** |
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* Generates the sparql query for retrieving concept and collection counts in a vocabulary. |
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* @return string sparql query |
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*/ |
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View Code Duplication |
private function generateCountConceptsQuery($array, $group) { |
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$gc = $this->graphClause; |
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$optional = $array ? "UNION { ?type rdfs:subClassOf* <$array> }" : ''; |
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$optional .= $group ? "UNION { ?type rdfs:subClassOf* <$group> }" : ''; |
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$query = <<<EOQ |
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SELECT (COUNT(?conc) as ?c) ?type ?typelabel WHERE { |
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$gc { |
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{ ?conc a ?type . |
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{ ?type rdfs:subClassOf* skos:Concept . } UNION { ?type rdfs:subClassOf* skos:Collection . } $optional } |
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OPTIONAL { ?type rdfs:label ?typelabel . } |
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} |
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} |
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GROUP BY ?type ?typelabel |
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EOQ; |
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return $query; |
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} |
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/** |
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* Used for transforming the concept count query results. |
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* @param EasyRdf_Sparql_Result $result query results to be transformed |
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* @param string $lang language of labels |
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* @return Array containing the label counts |
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*/ |
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private function transformCountConceptsResults($result, $lang) { |
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$ret = array(); |
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foreach ($result as $row) { |
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if (!isset($row->type)) { |
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continue; |
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} |
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$ret[$row->type->getUri()]['type'] = $row->type->getUri(); |
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$ret[$row->type->getUri()]['count'] = $row->c->getValue(); |
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if (isset($row->typelabel) && $row->typelabel->getLang() === $lang) { |
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$ret[$row->type->getUri()]['label'] = $row->typelabel->getValue(); |
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} |
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} |
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return $ret; |
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} |
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/** |
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* Used for counting number of concepts and collections in a vocabulary. |
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* @param string $lang language of labels |
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* @return int number of concepts in this vocabulary |
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*/ |
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public function countConcepts($lang = null, $array = null, $group = null) { |
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$query = $this->generateCountConceptsQuery($array, $group); |
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$result = $this->client->query($query); |
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return $this->transformCountConceptsResults($result, $lang); |
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} |
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/** |
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* @param array $langs Languages to query for |
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* @param string[] $props property names |
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* @return string sparql query |
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*/ |
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private function generateCountLangConceptsQuery($langs, $classes, $props) { |
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$gc = $this->graphClause; |
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$classes = ($classes) ? $classes : array('http://www.w3.org/2004/02/skos/core#Concept'); |
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$values = $this->formatValues('?type', $classes, 'uri'); |
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$values_lang = $this->formatValues('?lang', $langs, 'literal'); |
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$values_prop = $this->formatValues('?prop', $props, null); |
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$query = <<<EOQ |
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SELECT ?lang ?prop |
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(COUNT(?label) as ?count) |
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WHERE { |
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$gc { |
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?conc a ?type . |
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?conc ?prop ?label . |
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FILTER (langMatches(lang(?label), ?lang)) |
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$values_lang |
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$values_prop |
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} |
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$values |
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} |
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GROUP BY ?lang ?prop ?type |
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EOQ; |
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return $query; |
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} |
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/** |
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* Transforms the CountLangConcepts results into an array of label counts. |
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* @param EasyRdf_Sparql_Result $result query results to be transformed |
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* @param array $langs Languages to query for |
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* @param string[] $props property names |
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*/ |
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private function transformCountLangConceptsResults($result, $langs, $props) { |
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$ret = array(); |
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// set default count to zero; overridden below if query found labels |
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foreach ($langs as $lang) { |
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foreach ($props as $prop) { |
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$ret[$lang][$prop] = 0; |
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} |
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} |
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foreach ($result as $row) { |
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if (isset($row->lang) && isset($row->prop) && isset($row->count)) { |
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$ret[$row->lang->getValue()][$row->prop->shorten()] = |
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$row->count->getValue(); |
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} |
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} |
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ksort($ret); |
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return $ret; |
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} |
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/** |
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* Counts the number of concepts in a easyRDF graph with a specific language. |
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* @param array $langs Languages to query for |
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* @return Array containing count of concepts for each language and property. |
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*/ |
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public function countLangConcepts($langs, $classes = null) { |
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$props = array('skos:prefLabel', 'skos:altLabel', 'skos:hiddenLabel'); |
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$query = $this->generateCountLangConceptsQuery($langs, $classes, $props); |
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// Count the number of terms in each language |
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$result = $this->client->query($query); |
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return $this->transformCountLangConceptsResults($result, $langs, $props); |
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} |
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/** |
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* Formats a VALUES clause (SPARQL 1.1) which states that the variable should be bound to one |
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* of the constants given. |
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* @param string $varname variable name, e.g. "?uri" |
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* @param array $values the values |
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* @param string $type type of values: "uri", "literal" or null (determines quoting style) |
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*/ |
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protected function formatValues($varname, $values, $type = null) { |
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$constants = array(); |
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foreach ($values as $val) { |
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if ($type == 'uri') { |
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$val = "<$val>"; |
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} |
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if ($type == 'literal') { |
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$val = "'$val'"; |
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} |
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$constants[] = "($val)"; |
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} |
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$values = implode(" ", $constants); |
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return "VALUES ($varname) { $values }"; |
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} |
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/** |
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* Filters multiple instances of the same vocabulary from the input array. |
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* @param \Vocabulary[] $vocabs array of Vocabulary objects |
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* @return \Vocabulary[] |
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*/ |
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private function filterDuplicateVocabs($vocabs) { |
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// filtering duplicates |
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$unique_vocabs = array(); |
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if (sizeof($vocabs) > 0) { |
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foreach ($vocabs as $voc) { |
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$unique_vocabs[$voc->getId()] = $voc; |
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} |
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} |
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return $unique_vocabs; |
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} |
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/** |
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* Generates a sparql query for one or more concept URIs |
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* @param mixed $uris concept URI (string) or array of URIs |
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* @param string|null $arrayClass the URI for thesaurus array class, or null if not used |
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* @param \Vocabulary[] $vocabs array of Vocabulary objects |
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* @return string sparql query |
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*/ |
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private function generateConceptInfoQuery($uris, $arrayClass, $vocabs) { |
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$gc = $this->graphClause; |
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$values = $this->formatValues('?uri', $uris, 'uri'); |
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$unique_vocabs = $this->filterDuplicateVocabs($vocabs); |
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$values_graph = $this->formatValuesGraph($unique_vocabs); |
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if ($arrayClass === null) { |
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$construct = $optional = ""; |
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} else { |
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// add information that can be used to format narrower concepts by |
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// the array they belong to ("milk by source animal" use case) |
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$construct = "\n ?x skos:member ?o . ?x skos:prefLabel ?xl . ?x a <$arrayClass> ."; |
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$optional = "\n OPTIONAL { |
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?x skos:member ?o . |
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?x a <$arrayClass> . |
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?x skos:prefLabel ?xl . |
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}"; |
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} |
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$query = <<<EOQ |
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CONSTRUCT { |
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?s ?p ?uri . |
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?sp ?uri ?op . |
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?uri ?p ?o . |
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?p rdfs:label ?proplabel . |
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?p rdfs:subPropertyOf ?pp . |
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?pp rdfs:label ?plabel . |
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?o a ?ot . |
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?o skos:prefLabel ?opl . |
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?o rdfs:label ?ol . |
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?o rdf:value ?ov . |
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?o skos:notation ?on . |
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?directgroup skos:member ?uri . |
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?parent skos:member ?group . |
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?group skos:prefLabel ?grouplabel . |
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?b1 rdf:first ?item . |
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?b1 rdf:rest ?b2 . |
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?item a ?it . |
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?item skos:prefLabel ?il . |
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?group a ?grouptype . $construct |
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} WHERE { |
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$gc { |
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{ |
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?s ?p ?uri . |
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FILTER(!isBlank(?s)) |
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} |
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UNION |
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{ ?sp ?uri ?op . } |
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UNION |
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{ |
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?directgroup skos:member ?uri . |
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?group skos:member+ ?uri . |
|
312
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|
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?group skos:prefLabel ?grouplabel . |
|
313
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|
|
?group a ?grouptype . |
|
314
|
|
|
OPTIONAL { ?parent skos:member ?group } |
|
315
|
|
|
} |
|
316
|
|
|
UNION |
|
317
|
|
|
{ |
|
318
|
|
|
?uri ?p ?o . |
|
319
|
|
|
OPTIONAL { |
|
320
|
|
|
?o rdf:rest* ?b1 . |
|
321
|
|
|
?b1 rdf:first ?item . |
|
322
|
|
|
?b1 rdf:rest ?b2 . |
|
323
|
|
|
OPTIONAL { ?item a ?it . } |
|
324
|
|
|
OPTIONAL { ?item skos:prefLabel ?il . } |
|
325
|
|
|
} |
|
326
|
|
|
OPTIONAL { |
|
327
|
|
|
{ ?p rdfs:label ?proplabel . } |
|
328
|
|
|
UNION |
|
329
|
|
|
{ ?p rdfs:subPropertyOf ?pp . } |
|
330
|
|
|
UNION |
|
331
|
|
|
{ ?o a ?ot . } |
|
332
|
|
|
UNION |
|
333
|
|
|
{ ?o skos:prefLabel ?opl . } |
|
334
|
|
|
UNION |
|
335
|
|
|
{ ?o rdfs:label ?ol . } |
|
336
|
|
|
UNION |
|
337
|
|
|
{ ?o rdf:value ?ov . } |
|
338
|
|
|
UNION |
|
339
|
|
|
{ ?o skos:notation ?on . } |
|
340
|
|
|
} $optional |
|
341
|
|
|
} |
|
342
|
|
|
} |
|
343
|
|
|
$values |
|
344
|
|
|
} |
|
345
|
|
|
$values_graph |
|
346
|
|
|
EOQ; |
|
347
|
|
|
return $query; |
|
348
|
|
|
} |
|
349
|
|
|
|
|
350
|
|
|
/** |
|
351
|
|
|
* Transforms ConceptInfo query results into an array of Concept objects |
|
352
|
|
|
* @param EasyRdf_Graph $result query results to be transformed |
|
353
|
|
|
* @param mixed $uris concept URI (string) or array of URIs |
|
354
|
|
|
* @param \Vocabulary[] $vocabs array of Vocabulary object |
|
355
|
|
|
* @param string|null $clang content language |
|
356
|
|
|
* @return mixed query result graph (EasyRdf_Graph), or array of Concept objects |
|
357
|
|
|
*/ |
|
358
|
|
|
private function transformConceptInfoResults($result, $uris, $vocabs, $clang) { |
|
359
|
|
|
$conceptArray = array(); |
|
360
|
|
|
foreach ($uris as $index => $uri) { |
|
361
|
|
|
$conc = $result->resource($uri); |
|
362
|
|
|
$vocab = sizeof($vocabs) == 1 ? $vocabs[0] : $vocabs[$index]; |
|
363
|
|
|
$conceptArray[] = new Concept($this->model, $vocab, $conc, $result, $clang); |
|
364
|
|
|
} |
|
365
|
|
|
return $conceptArray; |
|
366
|
|
|
} |
|
367
|
|
|
|
|
368
|
|
|
/** |
|
369
|
|
|
* Returns information (as a graph) for one or more concept URIs |
|
370
|
|
|
* @param mixed $uris concept URI (string) or array of URIs |
|
371
|
|
|
* @param string|null $arrayClass the URI for thesaurus array class, or null if not used |
|
372
|
|
|
* @param \Vocabulary[]|null $vocabs array of Vocabulary object |
|
373
|
|
|
* @param boolean $as_graph whether to return a graph (true) or array of Concepts (false) |
|
374
|
|
|
* @param string|null $clang content language |
|
375
|
|
|
* @return mixed query result graph (EasyRdf_Graph), or array of Concept objects |
|
376
|
|
|
*/ |
|
377
|
|
|
public function queryConceptInfo($uris, $arrayClass = null, $vocabs = array(), $as_graph = false, $clang = null) { |
|
378
|
|
|
// if just a single URI is given, put it in an array regardless |
|
379
|
|
|
if (!is_array($uris)) { |
|
380
|
|
|
$uris = array($uris); |
|
381
|
|
|
} |
|
382
|
|
|
|
|
383
|
|
|
$query = $this->generateConceptInfoQuery($uris, $arrayClass, $vocabs); |
|
|
|
|
|
|
384
|
|
|
$result = $this->client->query($query); |
|
385
|
|
|
if ($as_graph) { |
|
386
|
|
|
return $result; |
|
387
|
|
|
} |
|
388
|
|
|
|
|
389
|
|
|
if ($result->isEmpty()) { |
|
390
|
|
|
return; |
|
391
|
|
|
} |
|
392
|
|
|
|
|
393
|
|
|
return $this->transformConceptInfoResults($result, $uris, $vocabs, $clang); |
|
|
|
|
|
|
394
|
|
|
} |
|
395
|
|
|
|
|
396
|
|
|
/** |
|
397
|
|
|
* Generates the sparql query for queryTypes |
|
398
|
|
|
* @param string $lang |
|
399
|
|
|
* @return string sparql query |
|
400
|
|
|
*/ |
|
401
|
|
|
private function generateQueryTypesQuery($lang) { |
|
402
|
|
|
$gc = $this->graphClause; |
|
403
|
|
|
$query = <<<EOQ |
|
404
|
|
|
SELECT DISTINCT ?type ?label ?superclass |
|
405
|
|
|
WHERE { |
|
406
|
|
|
$gc { |
|
407
|
|
|
{ |
|
408
|
|
|
{ BIND( skos:Concept as ?type ) } |
|
409
|
|
|
UNION |
|
410
|
|
|
{ BIND( skos:Collection as ?type ) } |
|
411
|
|
|
UNION |
|
412
|
|
|
{ BIND( isothes:ConceptGroup as ?type ) } |
|
413
|
|
|
UNION |
|
414
|
|
|
{ BIND( isothes:ThesaurusArray as ?type ) } |
|
415
|
|
|
UNION |
|
416
|
|
|
{ ?type rdfs:subClassOf/rdfs:subClassOf* skos:Concept . } |
|
417
|
|
|
UNION |
|
418
|
|
|
{ ?type rdfs:subClassOf/rdfs:subClassOf* skos:Collection . } |
|
419
|
|
|
} |
|
420
|
|
|
OPTIONAL { |
|
421
|
|
|
?type rdfs:label ?label . |
|
422
|
|
|
FILTER(langMatches(lang(?label), '$lang')) |
|
423
|
|
|
} |
|
424
|
|
|
OPTIONAL { |
|
425
|
|
|
?type rdfs:subClassOf ?superclass . |
|
426
|
|
|
} |
|
427
|
|
|
FILTER EXISTS { |
|
428
|
|
|
?s a ?type . |
|
429
|
|
|
?s skos:prefLabel ?prefLabel . |
|
430
|
|
|
} |
|
431
|
|
|
} |
|
432
|
|
|
} |
|
433
|
|
|
EOQ; |
|
434
|
|
|
return $query; |
|
435
|
|
|
} |
|
436
|
|
|
|
|
437
|
|
|
/** |
|
438
|
|
|
* Transforms the results into an array format. |
|
439
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
440
|
|
|
* @return array Array with URIs (string) as key and array of (label, superclassURI) as value |
|
441
|
|
|
*/ |
|
442
|
|
View Code Duplication |
private function transformQueryTypesResults($result) { |
|
|
|
|
|
|
443
|
|
|
$ret = array(); |
|
444
|
|
|
foreach ($result as $row) { |
|
445
|
|
|
$type = array(); |
|
446
|
|
|
if (isset($row->label)) { |
|
447
|
|
|
$type['label'] = $row->label->getValue(); |
|
448
|
|
|
} |
|
449
|
|
|
|
|
450
|
|
|
if (isset($row->superclass)) { |
|
451
|
|
|
$type['superclass'] = $row->superclass->getUri(); |
|
452
|
|
|
} |
|
453
|
|
|
|
|
454
|
|
|
$ret[$row->type->getURI()] = $type; |
|
455
|
|
|
} |
|
456
|
|
|
return $ret; |
|
457
|
|
|
} |
|
458
|
|
|
|
|
459
|
|
|
/** |
|
460
|
|
|
* Retrieve information about types from the endpoint |
|
461
|
|
|
* @param string $lang |
|
462
|
|
|
* @return array Array with URIs (string) as key and array of (label, superclassURI) as value |
|
463
|
|
|
*/ |
|
464
|
|
|
public function queryTypes($lang) { |
|
465
|
|
|
$query = $this->generateQueryTypesQuery($lang); |
|
466
|
|
|
$result = $this->client->query($query); |
|
467
|
|
|
return $this->transformQueryTypesResults($result); |
|
468
|
|
|
} |
|
469
|
|
|
|
|
470
|
|
|
/** |
|
471
|
|
|
* Generates the concept scheme query. |
|
472
|
|
|
* @param string $conceptscheme concept scheme URI |
|
473
|
|
|
* @return string sparql query |
|
474
|
|
|
*/ |
|
475
|
|
|
private function generateQueryConceptSchemeQuery($conceptscheme) { |
|
476
|
|
|
$gc = $this->graphClause; |
|
477
|
|
|
$query = <<<EOQ |
|
478
|
|
|
CONSTRUCT { |
|
479
|
|
|
<$conceptscheme> ?property ?value . |
|
480
|
|
|
} WHERE { |
|
481
|
|
|
$gc { |
|
482
|
|
|
<$conceptscheme> ?property ?value . |
|
483
|
|
|
FILTER (?property != skos:hasTopConcept) |
|
484
|
|
|
} |
|
485
|
|
|
} |
|
486
|
|
|
EOQ; |
|
487
|
|
|
return $query; |
|
488
|
|
|
} |
|
489
|
|
|
|
|
490
|
|
|
/** |
|
491
|
|
|
* Retrieves conceptScheme information from the endpoint. |
|
492
|
|
|
* @param string $conceptscheme concept scheme URI |
|
493
|
|
|
* @return EasyRDF_Graph query result graph |
|
494
|
|
|
*/ |
|
495
|
|
|
public function queryConceptScheme($conceptscheme) { |
|
496
|
|
|
$query = $this->generateQueryConceptSchemeQuery($conceptscheme); |
|
497
|
|
|
return $this->client->query($query); |
|
498
|
|
|
} |
|
499
|
|
|
|
|
500
|
|
|
/** |
|
501
|
|
|
* Generates the queryConceptSchemes sparql query. |
|
502
|
|
|
* @param string $lang language of labels |
|
503
|
|
|
* @return string sparql query |
|
504
|
|
|
*/ |
|
505
|
|
|
private function generateQueryConceptSchemesQuery($lang) { |
|
506
|
|
|
$gc = $this->graphClause; |
|
507
|
|
|
$query = <<<EOQ |
|
508
|
|
|
SELECT ?cs ?label ?preflabel ?title |
|
509
|
|
|
WHERE { |
|
510
|
|
|
$gc { |
|
511
|
|
|
?cs a skos:ConceptScheme . |
|
512
|
|
|
OPTIONAL { |
|
513
|
|
|
?cs rdfs:label ?label . |
|
514
|
|
|
FILTER(langMatches(lang(?label), '$lang')) |
|
515
|
|
|
} |
|
516
|
|
|
OPTIONAL { |
|
517
|
|
|
?cs skos:prefLabel ?preflabel . |
|
518
|
|
|
FILTER(langMatches(lang(?preflabel), '$lang')) |
|
519
|
|
|
} |
|
520
|
|
|
OPTIONAL { |
|
521
|
|
|
{ ?cs dc11:title ?title } |
|
522
|
|
|
UNION |
|
523
|
|
|
{ ?cs dc:title ?title } |
|
524
|
|
|
FILTER(langMatches(lang(?title), '$lang')) |
|
525
|
|
|
} |
|
526
|
|
|
} |
|
527
|
|
|
} ORDER BY ?cs |
|
528
|
|
|
EOQ; |
|
529
|
|
|
return $query; |
|
530
|
|
|
} |
|
531
|
|
|
|
|
532
|
|
|
/** |
|
533
|
|
|
* Transforms the queryConceptScheme results into an array format. |
|
534
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
535
|
|
|
* @return array |
|
536
|
|
|
*/ |
|
537
|
|
|
private function transformQueryConceptSchemesResults($result) { |
|
538
|
|
|
$ret = array(); |
|
539
|
|
|
foreach ($result as $row) { |
|
540
|
|
|
$conceptscheme = array(); |
|
541
|
|
|
if (isset($row->label)) { |
|
542
|
|
|
$conceptscheme['label'] = $row->label->getValue(); |
|
543
|
|
|
} |
|
544
|
|
|
|
|
545
|
|
|
if (isset($row->preflabel)) { |
|
546
|
|
|
$conceptscheme['prefLabel'] = $row->preflabel->getValue(); |
|
547
|
|
|
} |
|
548
|
|
|
|
|
549
|
|
|
if (isset($row->title)) { |
|
550
|
|
|
$conceptscheme['title'] = $row->title->getValue(); |
|
551
|
|
|
} |
|
552
|
|
|
|
|
553
|
|
|
$ret[$row->cs->getURI()] = $conceptscheme; |
|
554
|
|
|
} |
|
555
|
|
|
return $ret; |
|
556
|
|
|
} |
|
557
|
|
|
|
|
558
|
|
|
/** |
|
559
|
|
|
* return a list of skos:ConceptScheme instances in the given graph |
|
560
|
|
|
* @param string $lang language of labels |
|
561
|
|
|
* @return array Array with concept scheme URIs (string) as keys and labels (string) as values |
|
562
|
|
|
*/ |
|
563
|
|
|
public function queryConceptSchemes($lang) { |
|
564
|
|
|
$query = $this->generateQueryConceptSchemesQuery($lang); |
|
565
|
|
|
$result = $this->client->query($query); |
|
566
|
|
|
return $this->transformQueryConceptSchemesResults($result); |
|
567
|
|
|
} |
|
568
|
|
|
|
|
569
|
|
|
/** |
|
570
|
|
|
* Generate a VALUES clause for limiting the targeted graphs. |
|
571
|
|
|
* @param Vocabulary[] $vocabs the vocabularies to target |
|
572
|
|
|
* @return string[] array of graph URIs |
|
573
|
|
|
*/ |
|
574
|
|
|
protected function getVocabGraphs($vocabs) { |
|
575
|
|
|
if ($vocabs === null || sizeof($vocabs) == 0) { |
|
576
|
|
|
// searching from all vocabularies - limit to known graphs |
|
577
|
|
|
$vocabs = $this->model->getVocabularies(); |
|
578
|
|
|
} |
|
579
|
|
|
$graphs = array(); |
|
580
|
|
|
foreach ($vocabs as $voc) { |
|
581
|
|
|
$graphs[] = $voc->getGraph(); |
|
582
|
|
|
} |
|
583
|
|
|
return $graphs; |
|
584
|
|
|
} |
|
585
|
|
|
|
|
586
|
|
|
/** |
|
587
|
|
|
* Generate a VALUES clause for limiting the targeted graphs. |
|
588
|
|
|
* @param array $vocabs array of Vocabulary objects to target |
|
589
|
|
|
* @return string VALUES clause, or "" if not necessary to limit |
|
590
|
|
|
*/ |
|
591
|
|
|
protected function formatValuesGraph($vocabs) { |
|
592
|
|
|
if (!$this->isDefaultEndpoint()) { |
|
593
|
|
|
return ""; |
|
594
|
|
|
} |
|
595
|
|
|
$graphs = $this->getVocabGraphs($vocabs); |
|
596
|
|
|
return $this->formatValues('?graph', $graphs, 'uri'); |
|
597
|
|
|
} |
|
598
|
|
|
|
|
599
|
|
|
/** |
|
600
|
|
|
* Generate a FILTER clause for limiting the targeted graphs. |
|
601
|
|
|
* @param array $vocabs array of Vocabulary objects to target |
|
602
|
|
|
* @return string FILTER clause, or "" if not necessary to limit |
|
603
|
|
|
*/ |
|
604
|
|
|
protected function formatFilterGraph($vocabs) { |
|
605
|
|
|
if (!$this->isDefaultEndpoint()) { |
|
606
|
|
|
return ""; |
|
607
|
|
|
} |
|
608
|
|
|
$graphs = $this->getVocabGraphs($vocabs); |
|
609
|
|
|
$conditions = array(); |
|
610
|
|
|
foreach ($graphs as $graph) { |
|
611
|
|
|
$conditions[] = "?graph=<$graph>"; |
|
612
|
|
|
} |
|
613
|
|
|
return "FILTER (" . implode('||', $conditions) . ")"; |
|
614
|
|
|
} |
|
615
|
|
|
|
|
616
|
|
|
/** |
|
617
|
|
|
* Formats combined limit and offset clauses for the sparql query |
|
618
|
|
|
* @param int $limit maximum number of hits to retrieve; 0 for unlimited |
|
619
|
|
|
* @param int $offset offset of results to retrieve; 0 for beginning of list |
|
620
|
|
|
* @return string sparql query clauses |
|
621
|
|
|
*/ |
|
622
|
|
|
protected function formatLimitAndOffset($limit, $offset) { |
|
623
|
|
|
$limit = ($limit) ? 'LIMIT ' . $limit : ''; |
|
624
|
|
|
$offset = ($offset) ? 'OFFSET ' . $offset : ''; |
|
625
|
|
|
// eliminating whitespace and line changes when the conditions aren't needed. |
|
626
|
|
|
$limitandoffset = ''; |
|
627
|
|
|
if ($limit && $offset) { |
|
628
|
|
|
$limitandoffset = "\n" . $limit . "\n" . $offset; |
|
629
|
|
|
} elseif ($limit) { |
|
630
|
|
|
$limitandoffset = "\n" . $limit; |
|
631
|
|
|
} elseif ($offset) { |
|
632
|
|
|
$limitandoffset = "\n" . $offset; |
|
633
|
|
|
} |
|
634
|
|
|
|
|
635
|
|
|
return $limitandoffset; |
|
636
|
|
|
} |
|
637
|
|
|
|
|
638
|
|
|
/** |
|
639
|
|
|
* Formats a sparql query clause for limiting the search to specific concept types. |
|
640
|
|
|
* @param array $types limit search to concepts of the given type(s) |
|
641
|
|
|
* @return string sparql query clause |
|
642
|
|
|
*/ |
|
643
|
|
|
protected function formatTypes($types) { |
|
644
|
|
|
$type_patterns = array(); |
|
645
|
|
|
if (!empty($types)) { |
|
646
|
|
|
foreach ($types as $type) { |
|
647
|
|
|
$unprefixed = EasyRdf_Namespace::expand($type); |
|
648
|
|
|
$type_patterns[] = "{ ?s a <$unprefixed> }"; |
|
649
|
|
|
} |
|
650
|
|
|
} |
|
651
|
|
|
|
|
652
|
|
|
return implode(' UNION ', $type_patterns);; |
|
653
|
|
|
} |
|
654
|
|
|
|
|
655
|
|
|
/** |
|
656
|
|
|
* @param string $lang language code of the returned labels |
|
657
|
|
|
* @param array $fields extra fields to include in the result (array of strings). (default: null = none) |
|
658
|
|
|
* @return string sparql query clause |
|
659
|
|
|
*/ |
|
660
|
|
|
protected function formatBroader($lang, $fields) { |
|
661
|
|
|
// extra variable expressions to request |
|
662
|
|
|
$extravars = ''; |
|
663
|
|
|
// extra fields to query for |
|
664
|
|
|
$extrafields = ''; |
|
665
|
|
|
|
|
666
|
|
|
if ($fields !== null && in_array('broader', $fields)) { |
|
667
|
|
|
# This expression creates a CSV row containing pairs of (uri,prefLabel) values. |
|
668
|
|
|
# The REPLACE is performed for quotes (" -> "") so they don't break the CSV format. |
|
669
|
|
|
$extravars = <<<EOV |
|
670
|
|
|
(GROUP_CONCAT(DISTINCT CONCAT( |
|
671
|
|
|
'"', STR(?broad), '"', ',', |
|
672
|
|
|
'"', REPLACE(IF(BOUND(?broadlab),?broadlab,''), '"', '""'), '"' |
|
673
|
|
|
); separator='\\n') as ?broaders) |
|
674
|
|
|
EOV; |
|
675
|
|
|
$extrafields = <<<EOF |
|
676
|
|
|
OPTIONAL { |
|
677
|
|
|
?s skos:broader ?broad . |
|
678
|
|
|
OPTIONAL { ?broad skos:prefLabel ?broadlab . FILTER(langMatches(lang(?broadlab), '$lang')) } |
|
679
|
|
|
} |
|
680
|
|
|
EOF; |
|
681
|
|
|
} |
|
682
|
|
|
return array('extravars' => $extravars, 'extrafields' => $extrafields); |
|
683
|
|
|
} |
|
684
|
|
|
|
|
685
|
|
|
/** |
|
686
|
|
|
* Generate condition for matching labels in SPARQL |
|
687
|
|
|
* @param string $term search term |
|
688
|
|
|
* @param string $search_lang language code used for matching labels (null means any language) |
|
689
|
|
|
* @return string sparql query snippet |
|
690
|
|
|
*/ |
|
691
|
|
|
protected function generateConceptSearchQueryCondition($term, $search_lang) |
|
692
|
|
|
{ |
|
693
|
|
|
# use appropriate matching function depending on query type: =, strstarts, strends or full regex |
|
694
|
|
|
if (preg_match('/^[^\*]+$/', $term)) { // exact query |
|
695
|
|
|
$term = str_replace('\\', '\\\\', $term); // quote slashes |
|
696
|
|
|
$term = str_replace('\'', '\\\'', mb_strtolower($term, 'UTF-8')); // make lowercase and escape single quotes |
|
697
|
|
|
$filtercond = "LCASE(STR(?match)) = '$term'"; |
|
698
|
|
|
} elseif (preg_match('/^[^\*]+\*$/', $term)) { // prefix query |
|
699
|
|
|
$term = substr($term, 0, -1); // remove the final asterisk |
|
700
|
|
|
$term = str_replace('\\', '\\\\', $term); // quote slashes |
|
701
|
|
|
$term = str_replace('\'', '\\\'', mb_strtolower($term, 'UTF-8')); // make lowercase and escape single quotes |
|
702
|
|
|
$filtercond = "STRSTARTS(LCASE(STR(?match)), '$term')"; |
|
703
|
|
|
} elseif (preg_match('/^\*[^\*]+$/', $term)) { // suffix query |
|
704
|
|
|
$term = substr($term, 1); // remove the preceding asterisk |
|
705
|
|
|
$term = str_replace('\\', '\\\\', $term); // quote slashes |
|
706
|
|
|
$term = str_replace('\'', '\\\'', mb_strtolower($term, 'UTF-8')); // make lowercase and escape single quotes |
|
707
|
|
|
$filtercond = "STRENDS(LCASE(STR(?match)), '$term')"; |
|
708
|
|
|
} else { // too complicated - have to use a regex |
|
709
|
|
|
# make sure regex metacharacters are not passed through |
|
710
|
|
|
$term = str_replace('\\', '\\\\', preg_quote($term)); |
|
711
|
|
|
$term = str_replace('\\\\*', '.*', $term); // convert asterisk to regex syntax |
|
712
|
|
|
$term = str_replace('\'', '\\\'', $term); // ensure single quotes are quoted |
|
713
|
|
|
$filtercond = "REGEX(STR(?match), '^$term$', 'i')"; |
|
714
|
|
|
} |
|
715
|
|
|
|
|
716
|
|
|
$labelcond_match = ($search_lang) ? "&& LANGMATCHES(lang(?match), '$search_lang')" : ""; |
|
717
|
|
|
|
|
718
|
|
|
return "?s ?prop ?match . FILTER ($filtercond $labelcond_match)"; |
|
719
|
|
|
} |
|
720
|
|
|
|
|
721
|
|
|
|
|
722
|
|
|
/** |
|
723
|
|
|
* Inner query for concepts using a search term. |
|
724
|
|
|
* @param string $term search term |
|
725
|
|
|
* @param string $lang language code of the returned labels |
|
726
|
|
|
* @param string $search_lang language code used for matching labels (null means any language) |
|
727
|
|
|
* @param string[] $props properties to target e.g. array('skos:prefLabel','skos:altLabel') |
|
728
|
|
|
* @param boolean $unique restrict results to unique concepts (default: false) |
|
729
|
|
|
* @return string sparql query |
|
730
|
|
|
*/ |
|
731
|
|
|
protected function generateConceptSearchQueryInner($term, $lang, $search_lang, $props, $unique) |
|
732
|
|
|
{ |
|
733
|
|
|
$values_prop = $this->formatValues('?prop', $props); |
|
734
|
|
|
$textcond = $this->generateConceptSearchQueryCondition($term, $search_lang); |
|
735
|
|
|
|
|
736
|
|
|
// extra conditions for label language, if specified |
|
737
|
|
|
$labelcond_label = ($lang) ? "LANGMATCHES(lang(?label), '$lang')" : "LANGMATCHES(lang(?label), lang(?match))"; |
|
738
|
|
|
// if search language and UI/display language differ, must also consider case where there is no prefLabel in |
|
739
|
|
|
// the display language; in that case, should use the label with the same language as the matched label |
|
740
|
|
|
$labelcond_fallback = ($search_lang != $lang) ? |
|
741
|
|
|
"OPTIONAL { # in case previous OPTIONAL block gives no labels\n" . |
|
742
|
|
|
"?s skos:prefLabel ?label . FILTER (LANGMATCHES(LANG(?label), LANG(?match))) }" : ""; |
|
743
|
|
|
|
|
744
|
|
|
/* |
|
745
|
|
|
* This query does some tricks to obtain a list of unique concepts. |
|
746
|
|
|
* From each match generated by the text index, a string such as |
|
747
|
|
|
* "1en@example" is generated, where the first character is a number |
|
748
|
|
|
* encoding the property and priority, then comes the language tag and |
|
749
|
|
|
* finally the original literal after an @ sign. Of these, the MIN |
|
750
|
|
|
* function is used to pick the best match for each concept. Finally, |
|
751
|
|
|
* the structure is unpacked to get back the original string. Phew! |
|
752
|
|
|
*/ |
|
753
|
|
|
$hitvar = $unique ? '(MIN(?matchstr) AS ?hit)' : '(?matchstr AS ?hit)'; |
|
754
|
|
|
$hitgroup = $unique ? 'GROUP BY ?s ?label' : ''; |
|
755
|
|
|
|
|
756
|
|
|
$query = <<<EOQ |
|
757
|
|
|
SELECT DISTINCT ?s ?label $hitvar |
|
758
|
|
|
WHERE { |
|
759
|
|
|
$values_prop |
|
760
|
|
|
VALUES (?prop ?pri) { (skos:prefLabel 1) (skos:altLabel 3) (skos:hiddenLabel 5)} |
|
761
|
|
|
$textcond |
|
762
|
|
|
?s ?prop ?match |
|
763
|
|
|
OPTIONAL { |
|
764
|
|
|
?s skos:prefLabel ?label . |
|
765
|
|
|
FILTER ($labelcond_label) |
|
766
|
|
|
} $labelcond_fallback |
|
767
|
|
|
BIND(IF(langMatches(LANG(?match),'$lang'), ?pri, ?pri+1) AS ?npri) |
|
768
|
|
|
BIND(CONCAT(STR(?npri), LANG(?match), '@', STR(?match)) AS ?matchstr) |
|
769
|
|
|
} |
|
770
|
|
|
$hitgroup |
|
771
|
|
|
EOQ; |
|
772
|
|
|
|
|
773
|
|
|
return $query; |
|
774
|
|
|
} |
|
775
|
|
|
|
|
776
|
|
|
/** |
|
777
|
|
|
* Query for concepts using a search term. |
|
778
|
|
|
* @param array $fields extra fields to include in the result (array of strings). (default: null = none) |
|
779
|
|
|
* @param boolean $unique restrict results to unique concepts (default: false) |
|
780
|
|
|
* @param ConceptSearchParameters $params |
|
781
|
|
|
* @return string sparql query |
|
782
|
|
|
*/ |
|
783
|
|
|
protected function generateConceptSearchQuery($fields, $unique, $params) { |
|
784
|
|
|
$gc = $this->graphClause; |
|
785
|
|
|
$limitandoffset = $this->formatLimitAndOffset($params->getSearchLimit(), $params->getOffset()); |
|
786
|
|
|
$formattedtype = $this->formatTypes($params->getTypeLimit()); |
|
787
|
|
|
$formattedbroader = $this->formatBroader($params->getLang(), $fields); |
|
788
|
|
|
$extravars = $formattedbroader['extravars']; |
|
789
|
|
|
$extrafields = $formattedbroader['extrafields']; |
|
790
|
|
|
$schemes = $params->getSchemeLimit(); |
|
791
|
|
|
|
|
792
|
|
|
$schemecond = ''; |
|
793
|
|
|
if (!empty($schemes)) { |
|
794
|
|
|
foreach($schemes as $scheme) { |
|
795
|
|
|
$schemecond .= "?s skos:inScheme <$scheme> . "; |
|
796
|
|
|
} |
|
797
|
|
|
} |
|
798
|
|
|
|
|
799
|
|
|
// extra conditions for parent and group, if specified |
|
800
|
|
|
$parentcond = ($params->getParentLimit()) ? "?s skos:broader+ <" . $params->getParentLimit() . "> ." : ""; |
|
801
|
|
|
$groupcond = ($params->getGroupLimit()) ? "<$params->getGroupLimit()> skos:member ?s ." : ""; |
|
|
|
|
|
|
802
|
|
|
$pgcond = $parentcond . $groupcond; |
|
803
|
|
|
|
|
804
|
|
|
$orderextra = $this->isDefaultEndpoint() ? $this->graph : ''; |
|
805
|
|
|
|
|
806
|
|
|
# make VALUES clauses |
|
807
|
|
|
$props = array('skos:prefLabel', 'skos:altLabel'); |
|
808
|
|
|
if ($params->getHidden()) { |
|
809
|
|
|
$props[] = 'skos:hiddenLabel'; |
|
810
|
|
|
} |
|
811
|
|
|
|
|
812
|
|
|
$filter_graph = $this->formatFilterGraph($params->getVocabs()); |
|
813
|
|
|
|
|
814
|
|
|
// remove futile asterisks from the search term |
|
815
|
|
|
$term = $params->getSearchTerm(); |
|
816
|
|
|
while (strpos($term, '**') !== false) { |
|
817
|
|
|
$term = str_replace('**', '*', $term); |
|
818
|
|
|
} |
|
819
|
|
|
|
|
820
|
|
|
$innerquery = $this->generateConceptSearchQueryInner($params->getSearchTerm(), $params->getLang(), $params->getSearchLang(), $props, $unique); |
|
821
|
|
|
|
|
822
|
|
|
$query = <<<EOQ |
|
823
|
|
|
SELECT DISTINCT ?s ?label ?plabel ?alabel ?hlabel ?graph (GROUP_CONCAT(DISTINCT ?type) as ?types) |
|
824
|
|
|
$extravars |
|
825
|
|
|
WHERE { |
|
826
|
|
|
$gc { |
|
827
|
|
|
{ |
|
828
|
|
|
$innerquery |
|
829
|
|
|
} |
|
830
|
|
|
FILTER(BOUND(?s)) |
|
831
|
|
|
BIND(STR(SUBSTR(?hit,1,1)) AS ?pri) |
|
832
|
|
|
BIND(STRLANG(STRAFTER(?hit, '@'), SUBSTR(STRBEFORE(?hit, '@'),2)) AS ?match) |
|
833
|
|
|
BIND(IF((?pri = "1" || ?pri = "2") && ?match != ?label, ?match, ?unbound) as ?plabel) |
|
834
|
|
|
BIND(IF((?pri = "3" || ?pri = "4"), ?match, ?unbound) as ?alabel) |
|
835
|
|
|
BIND(IF((?pri = "5" || ?pri = "6"), ?match, ?unbound) as ?hlabel) |
|
836
|
|
|
$formattedtype |
|
837
|
|
|
{ $pgcond |
|
838
|
|
|
?s a ?type . |
|
839
|
|
|
$extrafields $schemecond |
|
840
|
|
|
} |
|
841
|
|
|
FILTER NOT EXISTS { ?s owl:deprecated true } |
|
842
|
|
|
} |
|
843
|
|
|
$filter_graph |
|
844
|
|
|
} |
|
845
|
|
|
GROUP BY ?s ?match ?label ?plabel ?alabel ?hlabel ?graph |
|
846
|
|
|
ORDER BY LCASE(STR(?match)) LANG(?match) $orderextra $limitandoffset |
|
847
|
|
|
EOQ; |
|
848
|
|
|
return $query; |
|
849
|
|
|
} |
|
850
|
|
|
|
|
851
|
|
|
/** |
|
852
|
|
|
* Transform the concept search query results into the skosmos desired return format. |
|
853
|
|
|
* @param EasyRdf_Sparql_Result $results |
|
854
|
|
|
* @param array $vocabs array of Vocabulary objects to search; empty for global search |
|
855
|
|
|
* @return array query result object |
|
856
|
|
|
*/ |
|
857
|
|
|
private function transformConceptSearchResults($results, $vocabs) { |
|
858
|
|
|
$ret = array(); |
|
859
|
|
|
$qnamecache = array(); // optimization to avoid expensive shorten() calls |
|
860
|
|
|
|
|
861
|
|
|
foreach ($results as $row) { |
|
862
|
|
|
if (!isset($row->s)) { |
|
863
|
|
|
continue; |
|
864
|
|
|
} |
|
865
|
|
|
// don't break if query returns a single dummy result |
|
866
|
|
|
|
|
867
|
|
|
$hit = array(); |
|
868
|
|
|
$hit['uri'] = $row->s->getUri(); |
|
869
|
|
|
|
|
870
|
|
|
if (isset($row->graph)) { |
|
871
|
|
|
$hit['graph'] = $row->graph->getUri(); |
|
872
|
|
|
} |
|
873
|
|
|
|
|
874
|
|
|
foreach (explode(" ", $row->types->getValue()) as $typeuri) { |
|
875
|
|
|
if (!array_key_exists($typeuri, $qnamecache)) { |
|
876
|
|
|
$res = new EasyRdf_Resource($typeuri); |
|
877
|
|
|
$qname = $res->shorten(); // returns null on failure |
|
878
|
|
|
$qnamecache[$typeuri] = ($qname !== null) ? $qname : $typeuri; |
|
879
|
|
|
} |
|
880
|
|
|
$hit['type'][] = $qnamecache[$typeuri]; |
|
881
|
|
|
} |
|
882
|
|
|
|
|
883
|
|
|
if (isset($row->broaders)) { |
|
884
|
|
|
foreach (explode("\n", $row->broaders->getValue()) as $line) { |
|
885
|
|
|
$brdata = str_getcsv($line, ',', '"', '"'); |
|
886
|
|
|
$broader = array('uri' => $brdata[0]); |
|
887
|
|
|
if ($brdata[1] != '') { |
|
888
|
|
|
$broader['prefLabel'] = $brdata[1]; |
|
889
|
|
|
} |
|
890
|
|
|
|
|
891
|
|
|
$hit['broader'][] = $broader; |
|
892
|
|
|
} |
|
893
|
|
|
} |
|
894
|
|
|
|
|
895
|
|
|
foreach ($vocabs as $vocab) { // looping the vocabulary objects and asking these for a localname for the concept. |
|
896
|
|
|
$localname = $vocab->getLocalName($hit['uri']); |
|
897
|
|
|
if ($localname !== $hit['uri']) { // only passing the result forward if the uri didn't boomerang right back. |
|
898
|
|
|
$hit['localname'] = $localname; |
|
899
|
|
|
break; // stopping the search when we find one that returns something valid. |
|
900
|
|
|
} |
|
901
|
|
|
} |
|
902
|
|
|
|
|
903
|
|
|
if (isset($row->label)) { |
|
904
|
|
|
$hit['prefLabel'] = $row->label->getValue(); |
|
905
|
|
|
} |
|
906
|
|
|
|
|
907
|
|
|
if (isset($row->label)) { |
|
908
|
|
|
$hit['lang'] = $row->label->getLang(); |
|
909
|
|
|
} |
|
910
|
|
|
|
|
911
|
|
|
if (isset($row->plabel)) { |
|
912
|
|
|
$hit['matchedPrefLabel'] = $row->plabel->getValue(); |
|
913
|
|
|
$hit['lang'] = $row->plabel->getLang(); |
|
914
|
|
View Code Duplication |
} elseif (isset($row->alabel)) { |
|
|
|
|
|
|
915
|
|
|
$hit['altLabel'] = $row->alabel->getValue(); |
|
916
|
|
|
$hit['lang'] = $row->alabel->getLang(); |
|
917
|
|
|
} elseif (isset($row->hlabel)) { |
|
918
|
|
|
$hit['hiddenLabel'] = $row->hlabel->getValue(); |
|
919
|
|
|
$hit['lang'] = $row->hlabel->getLang(); |
|
920
|
|
|
} |
|
921
|
|
|
|
|
922
|
|
|
$ret[] = $hit; |
|
923
|
|
|
} |
|
924
|
|
|
return $ret; |
|
925
|
|
|
} |
|
926
|
|
|
|
|
927
|
|
|
/** |
|
928
|
|
|
* Query for concepts using a search term. |
|
929
|
|
|
* @param array $vocabs array of Vocabulary objects to search; empty for global search |
|
930
|
|
|
* @param array $fields extra fields to include in the result (array of strings). (default: null = none) |
|
931
|
|
|
* @param boolean $unique restrict results to unique concepts (default: false) |
|
932
|
|
|
* @param ConceptSearchParameters $params |
|
933
|
|
|
* @return array query result object |
|
934
|
|
|
*/ |
|
935
|
|
|
public function queryConcepts($vocabs, $fields = null, $unique = false, $params) { |
|
936
|
|
|
$query = $this->generateConceptSearchQuery($fields, $unique, $params); |
|
|
|
|
|
|
937
|
|
|
$results = $this->client->query($query); |
|
938
|
|
|
return $this->transformConceptSearchResults($results, $vocabs); |
|
939
|
|
|
} |
|
940
|
|
|
|
|
941
|
|
|
/** |
|
942
|
|
|
* Generates sparql query clauses used for creating the alphabetical index. |
|
943
|
|
|
* @param string $letter the letter (or special class) to search for |
|
944
|
|
|
* @return array of sparql query clause strings |
|
945
|
|
|
*/ |
|
946
|
|
|
private function formatFilterConditions($letter) { |
|
947
|
|
|
$use_regex = false; |
|
948
|
|
|
|
|
949
|
|
|
if ($letter == '*') { |
|
950
|
|
|
$letter = '.*'; |
|
951
|
|
|
$use_regex = true; |
|
952
|
|
|
} elseif ($letter == '0-9') { |
|
953
|
|
|
$letter = '[0-9].*'; |
|
954
|
|
|
$use_regex = true; |
|
955
|
|
|
} elseif ($letter == '!*') { |
|
956
|
|
|
$letter = '[^\\\\p{L}\\\\p{N}].*'; |
|
957
|
|
|
$use_regex = true; |
|
958
|
|
|
} |
|
959
|
|
|
|
|
960
|
|
|
# make text query clause |
|
961
|
|
|
$lcletter = mb_strtolower($letter, 'UTF-8'); // convert to lower case, UTF-8 safe |
|
962
|
|
|
if ($use_regex) { |
|
963
|
|
|
$filtercond_label = "regex(str(?label), '^$letter$', 'i')"; |
|
964
|
|
|
$filtercond_alabel = "regex(str(?alabel), '^$letter$', 'i')"; |
|
965
|
|
|
} else { |
|
966
|
|
|
$filtercond_label = "strstarts(lcase(str(?label)), '$lcletter')"; |
|
967
|
|
|
$filtercond_alabel = "strstarts(lcase(str(?alabel)), '$lcletter')"; |
|
968
|
|
|
} |
|
969
|
|
|
return array('filterpref' => $filtercond_label, 'filteralt' => $filtercond_alabel); |
|
970
|
|
|
} |
|
971
|
|
|
|
|
972
|
|
|
/** |
|
973
|
|
|
* Generates the sparql query used for rendering the alphabetical index. |
|
974
|
|
|
* @param string $letter the letter (or special class) to search for |
|
975
|
|
|
* @param string $lang language of labels |
|
976
|
|
|
* @param integer $limit limits the amount of results |
|
977
|
|
|
* @param integer $offset offsets the result set |
|
978
|
|
|
* @param array $classes |
|
979
|
|
|
* @return string sparql query |
|
980
|
|
|
*/ |
|
981
|
|
|
protected function generateAlphabeticalListQuery($letter, $lang, $limit, $offset, $classes) { |
|
982
|
|
|
$gc = $this->graphClause; |
|
983
|
|
|
$classes = ($classes) ? $classes : array('http://www.w3.org/2004/02/skos/core#Concept'); |
|
984
|
|
|
$values = $this->formatValues('?type', $classes, 'uri'); |
|
985
|
|
|
$limitandoffset = $this->formatLimitAndOffset($limit, $offset); |
|
986
|
|
|
$conditions = $this->formatFilterConditions($letter); |
|
987
|
|
|
$filtercond_label = $conditions['filterpref']; |
|
988
|
|
|
$filtercond_alabel = $conditions['filteralt']; |
|
989
|
|
|
|
|
990
|
|
|
$query = <<<EOQ |
|
991
|
|
|
SELECT DISTINCT ?s ?label ?alabel |
|
992
|
|
|
WHERE { |
|
993
|
|
|
$gc { |
|
994
|
|
|
{ |
|
995
|
|
|
?s skos:prefLabel ?label . |
|
996
|
|
|
FILTER ( |
|
997
|
|
|
$filtercond_label |
|
998
|
|
|
&& langMatches(lang(?label), '$lang') |
|
999
|
|
|
) |
|
1000
|
|
|
} |
|
1001
|
|
|
UNION |
|
1002
|
|
|
{ |
|
1003
|
|
|
{ |
|
1004
|
|
|
?s skos:altLabel ?alabel . |
|
1005
|
|
|
FILTER ( |
|
1006
|
|
|
$filtercond_alabel |
|
1007
|
|
|
&& langMatches(lang(?alabel), '$lang') |
|
1008
|
|
|
) |
|
1009
|
|
|
} |
|
1010
|
|
|
{ |
|
1011
|
|
|
?s skos:prefLabel ?label . |
|
1012
|
|
|
FILTER (langMatches(lang(?label), '$lang')) |
|
1013
|
|
|
} |
|
1014
|
|
|
} |
|
1015
|
|
|
?s a ?type . |
|
1016
|
|
|
FILTER NOT EXISTS { ?s owl:deprecated true } |
|
1017
|
|
|
} $values |
|
1018
|
|
|
} |
|
1019
|
|
|
ORDER BY LCASE(IF(BOUND(?alabel), STR(?alabel), STR(?label))) $limitandoffset |
|
1020
|
|
|
EOQ; |
|
1021
|
|
|
return $query; |
|
1022
|
|
|
} |
|
1023
|
|
|
|
|
1024
|
|
|
/** |
|
1025
|
|
|
* Transforms the alphabetical list query results into an array format. |
|
1026
|
|
|
* @param EasyRdf_Sparql_Result $results |
|
1027
|
|
|
* @return array |
|
1028
|
|
|
*/ |
|
1029
|
|
|
private function transformAlphabeticalListResults($results) { |
|
1030
|
|
|
$ret = array(); |
|
1031
|
|
|
|
|
1032
|
|
|
foreach ($results as $row) { |
|
1033
|
|
|
if (!isset($row->s)) { |
|
1034
|
|
|
continue; |
|
1035
|
|
|
} |
|
1036
|
|
|
// don't break if query returns a single dummy result |
|
1037
|
|
|
|
|
1038
|
|
|
$hit = array(); |
|
1039
|
|
|
$hit['uri'] = $row->s->getUri(); |
|
1040
|
|
|
|
|
1041
|
|
|
$hit['localname'] = $row->s->localName(); |
|
1042
|
|
|
|
|
1043
|
|
|
$hit['prefLabel'] = $row->label->getValue(); |
|
1044
|
|
|
$hit['lang'] = $row->label->getLang(); |
|
1045
|
|
|
|
|
1046
|
|
View Code Duplication |
if (isset($row->alabel)) { |
|
|
|
|
|
|
1047
|
|
|
$hit['altLabel'] = $row->alabel->getValue(); |
|
1048
|
|
|
$hit['lang'] = $row->alabel->getLang(); |
|
1049
|
|
|
} |
|
1050
|
|
|
|
|
1051
|
|
|
$ret[] = $hit; |
|
1052
|
|
|
} |
|
1053
|
|
|
|
|
1054
|
|
|
return $ret; |
|
1055
|
|
|
} |
|
1056
|
|
|
|
|
1057
|
|
|
/** |
|
1058
|
|
|
* Query for concepts with a term starting with the given letter. Also special classes '0-9' (digits), |
|
1059
|
|
|
* '*!' (special characters) and '*' (everything) are accepted. |
|
1060
|
|
|
* @param string $letter the letter (or special class) to search for |
|
1061
|
|
|
* @param string $lang language of labels |
|
1062
|
|
|
* @param integer $limit limits the amount of results |
|
1063
|
|
|
* @param integer $offset offsets the result set |
|
1064
|
|
|
* @param array $classes |
|
1065
|
|
|
*/ |
|
1066
|
|
|
public function queryConceptsAlphabetical($letter, $lang, $limit = null, $offset = null, $classes = null) { |
|
1067
|
|
|
$query = $this->generateAlphabeticalListQuery($letter, $lang, $limit, $offset, $classes); |
|
|
|
|
|
|
1068
|
|
|
$results = $this->client->query($query); |
|
1069
|
|
|
return $this->transformAlphabeticalListResults($results); |
|
1070
|
|
|
} |
|
1071
|
|
|
|
|
1072
|
|
|
/** |
|
1073
|
|
|
* Creates the query used for finding out which letters should be displayed in the alphabetical index. |
|
1074
|
|
|
* @param string $lang language |
|
1075
|
|
|
* @return string sparql query |
|
1076
|
|
|
*/ |
|
1077
|
|
|
private function generateFirstCharactersQuery($lang, $classes) { |
|
1078
|
|
|
$gc = $this->graphClause; |
|
1079
|
|
|
$classes = (sizeof($classes) > 0) ? $classes : array('http://www.w3.org/2004/02/skos/core#Concept'); |
|
1080
|
|
|
$values = $this->formatValues('?type', $classes, 'uri'); |
|
1081
|
|
|
$query = <<<EOQ |
|
1082
|
|
|
SELECT DISTINCT (substr(ucase(str(?label)), 1, 1) as ?l) WHERE { |
|
1083
|
|
|
$gc { |
|
1084
|
|
|
?c skos:prefLabel ?label . |
|
1085
|
|
|
?c a ?type |
|
1086
|
|
|
FILTER(langMatches(lang(?label), '$lang')) |
|
1087
|
|
|
} |
|
1088
|
|
|
$values |
|
1089
|
|
|
} |
|
1090
|
|
|
EOQ; |
|
1091
|
|
|
return $query; |
|
1092
|
|
|
} |
|
1093
|
|
|
|
|
1094
|
|
|
/** |
|
1095
|
|
|
* Transforms the first characters query results into an array format. |
|
1096
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1097
|
|
|
* @return array |
|
1098
|
|
|
*/ |
|
1099
|
|
|
private function transformFirstCharactersResults($result) { |
|
1100
|
|
|
$ret = array(); |
|
1101
|
|
|
foreach ($result as $row) { |
|
1102
|
|
|
$ret[] = $row->l->getValue(); |
|
1103
|
|
|
} |
|
1104
|
|
|
return $ret; |
|
1105
|
|
|
} |
|
1106
|
|
|
|
|
1107
|
|
|
/** |
|
1108
|
|
|
* Query for the first characters (letter or otherwise) of the labels in the particular language. |
|
1109
|
|
|
* @param string $lang language |
|
1110
|
|
|
* @return array array of characters |
|
1111
|
|
|
*/ |
|
1112
|
|
|
public function queryFirstCharacters($lang, $classes = null) { |
|
1113
|
|
|
$query = $this->generateFirstCharactersQuery($lang, $classes); |
|
1114
|
|
|
$result = $this->client->query($query); |
|
1115
|
|
|
return $this->transformFirstCharactersResults($result); |
|
1116
|
|
|
} |
|
1117
|
|
|
|
|
1118
|
|
|
/** |
|
1119
|
|
|
* @param string $uri |
|
1120
|
|
|
* @param string $lang |
|
1121
|
|
|
* @return string sparql query string |
|
1122
|
|
|
*/ |
|
1123
|
|
|
private function generateLabelQuery($uri, $lang) { |
|
1124
|
|
|
$gc = $this->graphClause; |
|
1125
|
|
|
$labelcond_label = ($lang) ? "FILTER( langMatches(lang(?label), '$lang') )" : ""; |
|
1126
|
|
|
$query = <<<EOQ |
|
1127
|
|
|
SELECT ?label |
|
1128
|
|
|
WHERE { |
|
1129
|
|
|
$gc { |
|
1130
|
|
|
<$uri> a ?type . |
|
1131
|
|
|
OPTIONAL { |
|
1132
|
|
|
<$uri> skos:prefLabel ?label . |
|
1133
|
|
|
$labelcond_label |
|
1134
|
|
|
} |
|
1135
|
|
|
OPTIONAL { |
|
1136
|
|
|
<$uri> rdfs:label ?label . |
|
1137
|
|
|
$labelcond_label |
|
1138
|
|
|
} |
|
1139
|
|
|
OPTIONAL { |
|
1140
|
|
|
<$uri> dc:title ?label . |
|
1141
|
|
|
$labelcond_label |
|
1142
|
|
|
} |
|
1143
|
|
|
OPTIONAL { |
|
1144
|
|
|
<$uri> dc11:title ?label . |
|
1145
|
|
|
$labelcond_label |
|
1146
|
|
|
} |
|
1147
|
|
|
} |
|
1148
|
|
|
} |
|
1149
|
|
|
EOQ; |
|
1150
|
|
|
return $query; |
|
1151
|
|
|
} |
|
1152
|
|
|
|
|
1153
|
|
|
/** |
|
1154
|
|
|
* Query for a label (skos:prefLabel, rdfs:label, dc:title, dc11:title) of a resource. |
|
1155
|
|
|
* @param string $uri |
|
1156
|
|
|
* @param string $lang |
|
1157
|
|
|
* @return array array of labels (key: lang, val: label), or null if resource doesn't exist |
|
1158
|
|
|
*/ |
|
1159
|
|
|
public function queryLabel($uri, $lang) { |
|
1160
|
|
|
$query = $this->generateLabelQuery($uri, $lang); |
|
1161
|
|
|
$result = $this->client->query($query); |
|
1162
|
|
|
$ret = array(); |
|
1163
|
|
|
foreach ($result as $row) { |
|
1164
|
|
|
if (!isset($row->label)) { |
|
1165
|
|
|
return array(); |
|
1166
|
|
|
} |
|
1167
|
|
|
// existing concept but no labels |
|
1168
|
|
|
$ret[$row->label->getLang()] = $row->label; |
|
1169
|
|
|
} |
|
1170
|
|
|
|
|
1171
|
|
|
if (sizeof($ret) > 0) { |
|
1172
|
|
|
return $ret; |
|
1173
|
|
|
} |
|
1174
|
|
|
// existing concept, with label(s) |
|
1175
|
|
|
else { |
|
1176
|
|
|
return null; |
|
1177
|
|
|
} |
|
1178
|
|
|
// nonexistent concept |
|
1179
|
|
|
} |
|
1180
|
|
|
|
|
1181
|
|
|
/** |
|
1182
|
|
|
* Generates a sparql query for queryProperty. |
|
1183
|
|
|
* @param string $uri |
|
1184
|
|
|
* @param string $prop the name of the property eg. 'skos:broader'. |
|
1185
|
|
|
* @param string $lang |
|
1186
|
|
|
* @param boolean $anylang if you want a label even when it isn't available in the language you requested. |
|
1187
|
|
|
* @return string sparql query |
|
1188
|
|
|
*/ |
|
1189
|
|
View Code Duplication |
private function generatePropertyQuery($uri, $prop, $lang, $anylang) { |
|
|
|
|
|
|
1190
|
|
|
$gc = $this->graphClause; |
|
1191
|
|
|
$anylang = $anylang ? "OPTIONAL { ?object skos:prefLabel ?label }" : ""; |
|
1192
|
|
|
|
|
1193
|
|
|
$query = <<<EOQ |
|
1194
|
|
|
SELECT * |
|
1195
|
|
|
WHERE { |
|
1196
|
|
|
$gc { |
|
1197
|
|
|
<$uri> a skos:Concept . |
|
1198
|
|
|
OPTIONAL { |
|
1199
|
|
|
<$uri> $prop ?object . |
|
1200
|
|
|
OPTIONAL { |
|
1201
|
|
|
?object skos:prefLabel ?label . |
|
1202
|
|
|
FILTER (langMatches(lang(?label), "$lang")) |
|
1203
|
|
|
} |
|
1204
|
|
|
OPTIONAL { |
|
1205
|
|
|
?object skos:prefLabel ?label . |
|
1206
|
|
|
FILTER (lang(?label) = "") |
|
1207
|
|
|
} |
|
1208
|
|
|
$anylang |
|
1209
|
|
|
} |
|
1210
|
|
|
} |
|
1211
|
|
|
} |
|
1212
|
|
|
EOQ; |
|
1213
|
|
|
return $query; |
|
1214
|
|
|
} |
|
1215
|
|
|
|
|
1216
|
|
|
/** |
|
1217
|
|
|
* Transforms the sparql query result into an array or null if the concept doesn't exist. |
|
1218
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1219
|
|
|
* @param string $lang |
|
1220
|
|
|
* @return array array of property values (key: URI, val: label), or null if concept doesn't exist |
|
1221
|
|
|
*/ |
|
1222
|
|
|
private function transformPropertyQueryResults($result, $lang) { |
|
1223
|
|
|
$ret = array(); |
|
1224
|
|
|
foreach ($result as $row) { |
|
1225
|
|
|
if (!isset($row->object)) { |
|
1226
|
|
|
return array(); |
|
1227
|
|
|
} |
|
1228
|
|
|
// existing concept but no properties |
|
1229
|
|
|
if (isset($row->label)) { |
|
1230
|
|
|
if ($row->label->getLang() === $lang || array_key_exists($row->object->getUri(), $ret) === false) { |
|
1231
|
|
|
$ret[$row->object->getUri()]['label'] = $row->label->getValue(); |
|
1232
|
|
|
} |
|
1233
|
|
|
|
|
1234
|
|
|
} else { |
|
1235
|
|
|
$ret[$row->object->getUri()]['label'] = null; |
|
1236
|
|
|
} |
|
1237
|
|
|
} |
|
1238
|
|
|
if (sizeof($ret) > 0) { |
|
1239
|
|
|
return $ret; |
|
1240
|
|
|
} |
|
1241
|
|
|
// existing concept, with properties |
|
1242
|
|
|
else { |
|
1243
|
|
|
return null; |
|
1244
|
|
|
} |
|
1245
|
|
|
// nonexistent concept |
|
1246
|
|
|
} |
|
1247
|
|
|
|
|
1248
|
|
|
/** |
|
1249
|
|
|
* Query a single property of a concept. |
|
1250
|
|
|
* @param string $uri |
|
1251
|
|
|
* @param string $prop the name of the property eg. 'skos:broader'. |
|
1252
|
|
|
* @param string $lang |
|
1253
|
|
|
* @param boolean $anylang if you want a label even when it isn't available in the language you requested. |
|
1254
|
|
|
* @return array array of property values (key: URI, val: label), or null if concept doesn't exist |
|
1255
|
|
|
*/ |
|
1256
|
|
|
public function queryProperty($uri, $prop, $lang, $anylang = false) { |
|
1257
|
|
|
$uri = is_array($uri) ? $uri[0] : $uri; |
|
1258
|
|
|
$query = $this->generatePropertyQuery($uri, $prop, $lang, $anylang); |
|
1259
|
|
|
$result = $this->client->query($query); |
|
1260
|
|
|
return $this->transformPropertyQueryResults($result, $lang); |
|
1261
|
|
|
} |
|
1262
|
|
|
|
|
1263
|
|
|
/** |
|
1264
|
|
|
* Query a single transitive property of a concept. |
|
1265
|
|
|
* @param string $uri |
|
1266
|
|
|
* @param string $prop the name of the property eg. 'skos:broader'. |
|
1267
|
|
|
* @param string $lang |
|
1268
|
|
|
* @param integer $limit |
|
1269
|
|
|
* @param boolean $anylang if you want a label even when it isn't available in the language you requested. |
|
1270
|
|
|
* @return string sparql query |
|
1271
|
|
|
*/ |
|
1272
|
|
|
private function generateTransitivePropertyQuery($uri, $prop, $lang, $limit, $anylang) { |
|
1273
|
|
|
$uri = is_array($uri) ? $uri[0] : $uri; |
|
1274
|
|
|
$gc = $this->graphClause; |
|
1275
|
|
|
$filter = $anylang ? "" : "FILTER (langMatches(lang(?label), \"$lang\"))"; |
|
1276
|
|
|
// need to do a SPARQL subquery because LIMIT needs to be applied /after/ |
|
1277
|
|
|
// the direct relationships have been collapsed into one string |
|
1278
|
|
|
$query = <<<EOQ |
|
1279
|
|
|
SELECT * |
|
1280
|
|
|
WHERE { |
|
1281
|
|
|
SELECT ?object ?label (GROUP_CONCAT(?dir) as ?direct) |
|
1282
|
|
|
WHERE { |
|
1283
|
|
|
$gc { |
|
1284
|
|
|
<$uri> a skos:Concept . |
|
1285
|
|
|
OPTIONAL { |
|
1286
|
|
|
<$uri> $prop* ?object . |
|
1287
|
|
|
OPTIONAL { |
|
1288
|
|
|
?object $prop ?dir . |
|
1289
|
|
|
} |
|
1290
|
|
|
} |
|
1291
|
|
|
OPTIONAL { |
|
1292
|
|
|
?object skos:prefLabel ?label . |
|
1293
|
|
|
$filter |
|
1294
|
|
|
} |
|
1295
|
|
|
} |
|
1296
|
|
|
} |
|
1297
|
|
|
GROUP BY ?object ?label |
|
1298
|
|
|
} |
|
1299
|
|
|
LIMIT $limit |
|
1300
|
|
|
EOQ; |
|
1301
|
|
|
return $query; |
|
1302
|
|
|
} |
|
1303
|
|
|
|
|
1304
|
|
|
/** |
|
1305
|
|
|
* Transforms the sparql query result object into an array. |
|
1306
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1307
|
|
|
* @param string $lang |
|
1308
|
|
|
* @param string $fallbacklang language to use if label is not available in the preferred language |
|
1309
|
|
|
* @return array of property values (key: URI, val: label), or null if concept doesn't exist |
|
1310
|
|
|
*/ |
|
1311
|
|
|
private function transformTransitivePropertyResults($result, $lang, $fallbacklang) { |
|
1312
|
|
|
$ret = array(); |
|
1313
|
|
|
foreach ($result as $row) { |
|
1314
|
|
|
if (!isset($row->object)) { |
|
1315
|
|
|
return array(); |
|
1316
|
|
|
} |
|
1317
|
|
|
// existing concept but no properties |
|
1318
|
|
|
if (isset($row->label)) { |
|
1319
|
|
|
$val = array('label' => $row->label->getValue()); |
|
1320
|
|
|
} else { |
|
1321
|
|
|
$val = array('label' => null); |
|
1322
|
|
|
} |
|
1323
|
|
View Code Duplication |
if (isset($row->direct) && $row->direct->getValue() != '') { |
|
|
|
|
|
|
1324
|
|
|
$val['direct'] = explode(' ', $row->direct->getValue()); |
|
1325
|
|
|
} |
|
1326
|
|
|
// Preventing labels in a non preferred language overriding the preferred language. |
|
1327
|
|
|
if (isset($row->label) && $row->label->getLang() === $lang || array_key_exists($row->object->getUri(), $ret) === false) { |
|
1328
|
|
|
if (!isset($row->label) || $row->label->getLang() === $lang) { |
|
1329
|
|
|
$ret[$row->object->getUri()] = $val; |
|
1330
|
|
|
} elseif ($row->label->getLang() === $fallbacklang) { |
|
1331
|
|
|
$val['label'] .= ' (' . $row->label->getLang() . ')'; |
|
1332
|
|
|
$ret[$row->object->getUri()] = $val; |
|
1333
|
|
|
} |
|
1334
|
|
|
} |
|
1335
|
|
|
} |
|
1336
|
|
|
|
|
1337
|
|
|
// second iteration of results to find labels for the ones that didn't have one in the preferred languages |
|
1338
|
|
|
foreach ($result as $row) { |
|
1339
|
|
|
if (isset($row->object) && array_key_exists($row->object->getUri(), $ret) === false) { |
|
1340
|
|
|
$val = array('label' => $row->label->getValue()); |
|
1341
|
|
View Code Duplication |
if (isset($row->direct) && $row->direct->getValue() != '') { |
|
|
|
|
|
|
1342
|
|
|
$val['direct'] = explode(' ', $row->direct->getValue()); |
|
1343
|
|
|
} |
|
1344
|
|
|
$ret[$row->object->getUri()] = $val; |
|
1345
|
|
|
} |
|
1346
|
|
|
} |
|
1347
|
|
|
|
|
1348
|
|
|
if (sizeof($ret) > 0) { |
|
1349
|
|
|
return $ret; |
|
1350
|
|
|
} |
|
1351
|
|
|
// existing concept, with properties |
|
1352
|
|
|
else { |
|
1353
|
|
|
return null; |
|
1354
|
|
|
} |
|
1355
|
|
|
// nonexistent concept |
|
1356
|
|
|
} |
|
1357
|
|
|
|
|
1358
|
|
|
/** |
|
1359
|
|
|
* Query a single transitive property of a concept. |
|
1360
|
|
|
* @param string $uri |
|
1361
|
|
|
* @param string $prop the name of the property eg. 'skos:broader'. |
|
1362
|
|
|
* @param string $lang |
|
1363
|
|
|
* @param string $fallbacklang language to use if label is not available in the preferred language |
|
1364
|
|
|
* @param integer $limit |
|
1365
|
|
|
* @param boolean $anylang if you want a label even when it isn't available in the language you requested. |
|
1366
|
|
|
* @return array array of property values (key: URI, val: label), or null if concept doesn't exist |
|
1367
|
|
|
*/ |
|
1368
|
|
|
public function queryTransitiveProperty($uri, $prop, $lang, $limit, $anylang = false, $fallbacklang = '') { |
|
1369
|
|
|
$query = $this->generateTransitivePropertyQuery($uri, $prop, $lang, $limit, $anylang); |
|
1370
|
|
|
$result = $this->client->query($query); |
|
1371
|
|
|
return $this->transformTransitivePropertyResults($result, $lang, $fallbacklang); |
|
1372
|
|
|
} |
|
1373
|
|
|
|
|
1374
|
|
|
/** |
|
1375
|
|
|
* Generates the query for a concepts skos:narrowers. |
|
1376
|
|
|
* @param string $uri |
|
1377
|
|
|
* @param string $lang |
|
1378
|
|
|
* @param string $fallback |
|
1379
|
|
|
* @return string sparql query |
|
1380
|
|
|
*/ |
|
1381
|
|
View Code Duplication |
private function generateNarrowerQuery($uri, $lang, $fallback) { |
|
|
|
|
|
|
1382
|
|
|
$uri = is_array($uri) ? $uri[0] : $uri; |
|
1383
|
|
|
$gc = $this->graphClause; |
|
1384
|
|
|
$query = <<<EOQ |
|
1385
|
|
|
SELECT ?child ?label ?child ?grandchildren ?notation WHERE { |
|
1386
|
|
|
$gc { |
|
1387
|
|
|
<$uri> a skos:Concept . |
|
1388
|
|
|
OPTIONAL { |
|
1389
|
|
|
<$uri> skos:narrower ?child . |
|
1390
|
|
|
OPTIONAL { |
|
1391
|
|
|
?child skos:prefLabel ?label . |
|
1392
|
|
|
FILTER (langMatches(lang(?label), "$lang")) |
|
1393
|
|
|
} |
|
1394
|
|
|
OPTIONAL { |
|
1395
|
|
|
?child skos:prefLabel ?label . |
|
1396
|
|
|
FILTER (langMatches(lang(?label), "$fallback")) |
|
1397
|
|
|
} |
|
1398
|
|
|
OPTIONAL { # other language case |
|
1399
|
|
|
?child skos:prefLabel ?label . |
|
1400
|
|
|
} |
|
1401
|
|
|
OPTIONAL { |
|
1402
|
|
|
?child skos:notation ?notation . |
|
1403
|
|
|
} |
|
1404
|
|
|
BIND ( EXISTS { ?child skos:narrower ?a . } AS ?grandchildren ) |
|
1405
|
|
|
} |
|
1406
|
|
|
} |
|
1407
|
|
|
} |
|
1408
|
|
|
EOQ; |
|
1409
|
|
|
return $query; |
|
1410
|
|
|
} |
|
1411
|
|
|
|
|
1412
|
|
|
/** |
|
1413
|
|
|
* Transforms the sparql result object into an array. |
|
1414
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1415
|
|
|
* @param string $lang |
|
1416
|
|
|
* @return array array of arrays describing each child concept, or null if concept doesn't exist |
|
1417
|
|
|
*/ |
|
1418
|
|
|
private function transformNarrowerResults($result, $lang) { |
|
1419
|
|
|
$ret = array(); |
|
1420
|
|
|
foreach ($result as $row) { |
|
1421
|
|
|
if (!isset($row->child)) { |
|
1422
|
|
|
return array(); |
|
1423
|
|
|
} |
|
1424
|
|
|
// existing concept but no children |
|
1425
|
|
|
|
|
1426
|
|
|
$label = null; |
|
1427
|
|
View Code Duplication |
if (isset($row->label)) { |
|
|
|
|
|
|
1428
|
|
|
if ($row->label->getLang() == $lang) { |
|
1429
|
|
|
$label = $row->label->getValue(); |
|
1430
|
|
|
} else { |
|
1431
|
|
|
$label = $row->label->getValue() . " (" . $row->label->getLang() . ")"; |
|
1432
|
|
|
} |
|
1433
|
|
|
|
|
1434
|
|
|
} |
|
1435
|
|
|
$child_array = array( |
|
1436
|
|
|
'uri' => $row->child->getUri(), |
|
1437
|
|
|
'prefLabel' => $label, |
|
1438
|
|
|
'hasChildren' => filter_var($row->grandchildren->getValue(), FILTER_VALIDATE_BOOLEAN), |
|
1439
|
|
|
); |
|
1440
|
|
|
if (isset($row->notation)) { |
|
1441
|
|
|
$child_array['notation'] = $row->notation->getValue(); |
|
1442
|
|
|
} |
|
1443
|
|
|
|
|
1444
|
|
|
$ret[] = $child_array; |
|
1445
|
|
|
} |
|
1446
|
|
|
if (sizeof($ret) > 0) { |
|
1447
|
|
|
return $ret; |
|
1448
|
|
|
} |
|
1449
|
|
|
// existing concept, with children |
|
1450
|
|
|
else { |
|
1451
|
|
|
return null; |
|
1452
|
|
|
} |
|
1453
|
|
|
// nonexistent concept |
|
1454
|
|
|
} |
|
1455
|
|
|
|
|
1456
|
|
|
/** |
|
1457
|
|
|
* Query the narrower concepts of a concept. |
|
1458
|
|
|
* @param string $uri |
|
1459
|
|
|
* @param string $lang |
|
1460
|
|
|
* @param string $fallback |
|
1461
|
|
|
* @return array array of arrays describing each child concept, or null if concept doesn't exist |
|
1462
|
|
|
*/ |
|
1463
|
|
|
public function queryChildren($uri, $lang, $fallback) { |
|
1464
|
|
|
$query = $this->generateNarrowerQuery($uri, $lang, $fallback); |
|
1465
|
|
|
$result = $this->client->query($query); |
|
1466
|
|
|
return $this->transformNarrowerResults($result, $lang); |
|
1467
|
|
|
} |
|
1468
|
|
|
|
|
1469
|
|
|
/** |
|
1470
|
|
|
* Query the top concepts of a vocabulary. |
|
1471
|
|
|
* @param string $conceptSchemes concept schemes whose top concepts to query for |
|
1472
|
|
|
* @param string $lang language of labels |
|
1473
|
|
|
*/ |
|
1474
|
|
|
public function queryTopConcepts($conceptSchemes, $lang) { |
|
1475
|
|
|
if (!is_array($conceptSchemes)) { |
|
1476
|
|
|
$conceptSchemes = array($conceptSchemes); |
|
1477
|
|
|
} |
|
1478
|
|
|
|
|
1479
|
|
|
$values = $this->formatValues('?topuri', $conceptSchemes, 'uri'); |
|
1480
|
|
|
|
|
1481
|
|
|
$gc = $this->graphClause; |
|
1482
|
|
|
$query = <<<EOQ |
|
1483
|
|
|
SELECT DISTINCT ?top ?topuri ?label ?notation ?children WHERE { |
|
1484
|
|
|
$gc { |
|
1485
|
|
|
?top skos:topConceptOf ?topuri . |
|
1486
|
|
|
?top skos:prefLabel ?label . |
|
1487
|
|
|
FILTER (langMatches(lang(?label), "$lang")) |
|
1488
|
|
|
OPTIONAL { ?top skos:notation ?notation . } |
|
1489
|
|
|
BIND ( EXISTS { ?top skos:narrower ?a . } AS ?children ) |
|
1490
|
|
|
} |
|
1491
|
|
|
$values |
|
1492
|
|
|
} |
|
1493
|
|
|
EOQ; |
|
1494
|
|
|
$result = $this->client->query($query); |
|
1495
|
|
|
$ret = array(); |
|
1496
|
|
|
foreach ($result as $row) { |
|
1497
|
|
|
if (isset($row->top) && isset($row->label)) { |
|
1498
|
|
|
$top = array('uri' => $row->top->getUri(), 'topConceptOf' => $row->topuri->getUri(), 'label' => $row->label->getValue(), 'hasChildren' => filter_var($row->children->getValue(), FILTER_VALIDATE_BOOLEAN)); |
|
1499
|
|
|
if (isset($row->notation)) { |
|
1500
|
|
|
$top['notation'] = $row->notation->getValue(); |
|
1501
|
|
|
} |
|
1502
|
|
|
|
|
1503
|
|
|
$ret[] = $top; |
|
1504
|
|
|
} |
|
1505
|
|
|
} |
|
1506
|
|
|
|
|
1507
|
|
|
return $ret; |
|
1508
|
|
|
} |
|
1509
|
|
|
|
|
1510
|
|
|
/** |
|
1511
|
|
|
* Generates a sparql query for finding the hierarchy for a concept. |
|
1512
|
|
|
* @param string $uri concept uri. |
|
1513
|
|
|
* @param string $lang |
|
1514
|
|
|
* @param string $fallback language to use if label is not available in the preferred language |
|
1515
|
|
|
* @return string sparql query |
|
1516
|
|
|
*/ |
|
1517
|
|
|
private function generateParentListQuery($uri, $lang, $fallback) { |
|
1518
|
|
|
$gc = $this->graphClause; |
|
1519
|
|
|
$query = <<<EOQ |
|
1520
|
|
|
SELECT ?broad ?parent ?member ?children ?grandchildren |
|
1521
|
|
|
(SAMPLE(?lab) as ?label) (SAMPLE(?childlab) as ?childlabel) (SAMPLE(?topcs) AS ?top) (SAMPLE(?nota) as ?notation) (SAMPLE(?childnota) as ?childnotation) |
|
1522
|
|
|
WHERE { |
|
1523
|
|
|
$gc { |
|
1524
|
|
|
<$uri> a skos:Concept . |
|
1525
|
|
|
OPTIONAL { |
|
1526
|
|
|
<$uri> skos:broader* ?broad . |
|
1527
|
|
|
OPTIONAL { |
|
1528
|
|
|
?broad skos:prefLabel ?lab . |
|
1529
|
|
|
FILTER (langMatches(lang(?lab), "$lang")) |
|
1530
|
|
|
} |
|
1531
|
|
|
OPTIONAL { |
|
1532
|
|
|
?broad skos:prefLabel ?lab . |
|
1533
|
|
|
FILTER (langMatches(lang(?lab), "$fallback")) |
|
1534
|
|
|
} |
|
1535
|
|
|
OPTIONAL { # fallback - other language case |
|
1536
|
|
|
?broad skos:prefLabel ?lab . |
|
1537
|
|
|
} |
|
1538
|
|
|
OPTIONAL { ?broad skos:notation ?nota . } |
|
1539
|
|
|
OPTIONAL { ?broad skos:broader ?parent . } |
|
1540
|
|
|
OPTIONAL { ?broad skos:narrower ?children . |
|
1541
|
|
|
OPTIONAL { |
|
1542
|
|
|
?children skos:prefLabel ?childlab . |
|
1543
|
|
|
FILTER (langMatches(lang(?childlab), "$lang")) |
|
1544
|
|
|
} |
|
1545
|
|
|
OPTIONAL { |
|
1546
|
|
|
?children skos:prefLabel ?childlab . |
|
1547
|
|
|
FILTER (langMatches(lang(?childlab), "$fallback")) |
|
1548
|
|
|
} |
|
1549
|
|
|
OPTIONAL { # fallback - other language case |
|
1550
|
|
|
?children skos:prefLabel ?childlab . |
|
1551
|
|
|
} |
|
1552
|
|
|
OPTIONAL { |
|
1553
|
|
|
?children skos:notation ?childnota . |
|
1554
|
|
|
} |
|
1555
|
|
|
} |
|
1556
|
|
|
BIND ( EXISTS { ?children skos:narrower ?a . } AS ?grandchildren ) |
|
1557
|
|
|
OPTIONAL { ?broad skos:topConceptOf ?topcs . } |
|
1558
|
|
|
} |
|
1559
|
|
|
} |
|
1560
|
|
|
} |
|
1561
|
|
|
GROUP BY ?broad ?parent ?member ?children ?grandchildren |
|
1562
|
|
|
EOQ; |
|
1563
|
|
|
return $query; |
|
1564
|
|
|
} |
|
1565
|
|
|
|
|
1566
|
|
|
/** |
|
1567
|
|
|
* Transforms the result into an array. |
|
1568
|
|
|
* @param EasyRdf_Sparql_Result |
|
1569
|
|
|
* @param string $lang |
|
1570
|
|
|
* @return an array for the REST controller to encode. |
|
1571
|
|
|
*/ |
|
1572
|
|
|
private function transformParentListResults($result, $lang) { |
|
1573
|
|
|
$ret = array(); |
|
1574
|
|
|
foreach ($result as $row) { |
|
1575
|
|
|
if (!isset($row->broad)) { |
|
1576
|
|
|
return array(); |
|
1577
|
|
|
} |
|
1578
|
|
|
// existing concept but no broaders |
|
1579
|
|
|
$uri = $row->broad->getUri(); |
|
1580
|
|
|
if (!isset($ret[$uri])) { |
|
1581
|
|
|
$ret[$uri] = array('uri' => $uri); |
|
1582
|
|
|
} |
|
1583
|
|
|
if (isset($row->exact)) { |
|
1584
|
|
|
$ret[$uri]['exact'] = $row->exact->getUri(); |
|
1585
|
|
|
} |
|
1586
|
|
|
if (isset($row->top)) { |
|
1587
|
|
|
$ret[$uri]['top'] = $row->top->getUri(); |
|
1588
|
|
|
} |
|
1589
|
|
|
if (isset($row->children)) { |
|
1590
|
|
|
if (!isset($ret[$uri]['narrower'])) { |
|
1591
|
|
|
$ret[$uri]['narrower'] = array(); |
|
1592
|
|
|
} |
|
1593
|
|
|
|
|
1594
|
|
|
$label = null; |
|
1595
|
|
View Code Duplication |
if (isset($row->childlabel)) { |
|
|
|
|
|
|
1596
|
|
|
$label = $row->childlabel->getValue(); |
|
1597
|
|
|
if ($row->childlabel->getLang() !== $lang) { |
|
1598
|
|
|
$label .= " (" . $row->childlabel->getLang() . ")"; |
|
1599
|
|
|
} |
|
1600
|
|
|
|
|
1601
|
|
|
} |
|
1602
|
|
|
|
|
1603
|
|
|
$child_arr = array( |
|
1604
|
|
|
'uri' => $row->children->getUri(), |
|
1605
|
|
|
'label' => $label, |
|
1606
|
|
|
'hasChildren' => filter_var($row->grandchildren->getValue(), FILTER_VALIDATE_BOOLEAN), |
|
1607
|
|
|
); |
|
1608
|
|
|
if (isset($row->childnotation)) { |
|
1609
|
|
|
$child_arr['notation'] = $row->childnotation->getValue(); |
|
1610
|
|
|
} |
|
1611
|
|
|
|
|
1612
|
|
|
if (!in_array($child_arr, $ret[$uri]['narrower'])) { |
|
1613
|
|
|
$ret[$uri]['narrower'][] = $child_arr; |
|
1614
|
|
|
} |
|
1615
|
|
|
|
|
1616
|
|
|
} |
|
1617
|
|
|
if (isset($row->label)) { |
|
1618
|
|
|
$preflabel = $row->label->getValue(); |
|
1619
|
|
|
if ($row->label->getLang() !== $lang) { |
|
1620
|
|
|
$preflabel .= ' (' . $row->label->getLang() . ')'; |
|
1621
|
|
|
} |
|
1622
|
|
|
|
|
1623
|
|
|
$ret[$uri]['prefLabel'] = $preflabel; |
|
1624
|
|
|
} |
|
1625
|
|
|
if (isset($row->notation)) { |
|
1626
|
|
|
$ret[$uri]['notation'] = $row->notation->getValue(); |
|
1627
|
|
|
} |
|
1628
|
|
|
|
|
1629
|
|
|
if (isset($row->parent) && (isset($ret[$uri]['broader']) && !in_array($row->parent->getUri(), $ret[$uri]['broader']))) { |
|
1630
|
|
|
$ret[$uri]['broader'][] = $row->parent->getUri(); |
|
1631
|
|
|
} elseif (isset($row->parent) && !isset($ret[$uri]['broader'])) { |
|
1632
|
|
|
$ret[$uri]['broader'][] = $row->parent->getUri(); |
|
1633
|
|
|
} |
|
1634
|
|
|
} |
|
1635
|
|
|
if (sizeof($ret) > 0) { |
|
1636
|
|
|
return $ret; |
|
1637
|
|
|
} |
|
1638
|
|
|
// existing concept, with children |
|
1639
|
|
|
else { |
|
1640
|
|
|
return null; |
|
1641
|
|
|
} |
|
1642
|
|
|
// nonexistent concept |
|
1643
|
|
|
} |
|
1644
|
|
|
|
|
1645
|
|
|
/** |
|
1646
|
|
|
* Query for finding the hierarchy for a concept. |
|
1647
|
|
|
* @param string $uri concept uri. |
|
1648
|
|
|
* @param string $lang |
|
1649
|
|
|
* @param string $fallback language to use if label is not available in the preferred language |
|
1650
|
|
|
* @return an array for the REST controller to encode. |
|
1651
|
|
|
*/ |
|
1652
|
|
|
public function queryParentList($uri, $lang, $fallback) { |
|
1653
|
|
|
$query = $this->generateParentListQuery($uri, $lang, $fallback); |
|
1654
|
|
|
$result = $this->client->query($query); |
|
1655
|
|
|
return $this->transformParentListResults($result, $lang); |
|
1656
|
|
|
} |
|
1657
|
|
|
|
|
1658
|
|
|
/** |
|
1659
|
|
|
* return a list of concept group instances, sorted by label |
|
1660
|
|
|
* @param string $groupClass URI of concept group class |
|
1661
|
|
|
* @param string $lang language of labels to return |
|
1662
|
|
|
* @return string sparql query |
|
1663
|
|
|
*/ |
|
1664
|
|
|
private function generateConceptGroupsQuery($groupClass, $lang) { |
|
1665
|
|
|
$gc = $this->graphClause; |
|
1666
|
|
|
$query = <<<EOQ |
|
1667
|
|
|
SELECT ?group (GROUP_CONCAT(DISTINCT STR(?child)) as ?children) ?label ?members ?notation |
|
1668
|
|
|
WHERE { |
|
1669
|
|
|
$gc { |
|
1670
|
|
|
?group a <$groupClass> . |
|
1671
|
|
|
OPTIONAL { ?group skos:member|isothes:subGroup ?child . |
|
1672
|
|
|
?child a <$groupClass> } |
|
1673
|
|
|
BIND(EXISTS{?group skos:member ?submembers} as ?members) |
|
1674
|
|
|
OPTIONAL { ?group skos:prefLabel ?label } |
|
1675
|
|
|
OPTIONAL { ?group rdfs:label ?label } |
|
1676
|
|
|
FILTER (langMatches(lang(?label), '$lang')) |
|
1677
|
|
|
OPTIONAL { ?group skos:notation ?notation } |
|
1678
|
|
|
} |
|
1679
|
|
|
} |
|
1680
|
|
|
GROUP BY ?group ?label ?members ?notation |
|
1681
|
|
|
ORDER BY lcase(?label) |
|
1682
|
|
|
EOQ; |
|
1683
|
|
|
return $query; |
|
1684
|
|
|
} |
|
1685
|
|
|
|
|
1686
|
|
|
/** |
|
1687
|
|
|
* Transforms the sparql query result into an array. |
|
1688
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1689
|
|
|
* @return array |
|
1690
|
|
|
*/ |
|
1691
|
|
|
private function transformConceptGroupsResults($result) { |
|
1692
|
|
|
$ret = array(); |
|
1693
|
|
|
foreach ($result as $row) { |
|
1694
|
|
|
if (!isset($row->group)) { |
|
1695
|
|
|
# no groups found, see issue #357 |
|
1696
|
|
|
continue; |
|
1697
|
|
|
} |
|
1698
|
|
|
$group = array('uri' => $row->group->getURI()); |
|
1699
|
|
|
if (isset($row->label)) { |
|
1700
|
|
|
$group['prefLabel'] = $row->label->getValue(); |
|
1701
|
|
|
} |
|
1702
|
|
|
|
|
1703
|
|
|
if (isset($row->children)) { |
|
1704
|
|
|
$group['childGroups'] = explode(' ', $row->children->getValue()); |
|
1705
|
|
|
} |
|
1706
|
|
|
|
|
1707
|
|
|
if (isset($row->members)) { |
|
1708
|
|
|
$group['hasMembers'] = $row->members->getValue(); |
|
1709
|
|
|
} |
|
1710
|
|
|
|
|
1711
|
|
|
if (isset($row->notation)) { |
|
1712
|
|
|
$group['notation'] = $row->notation->getValue(); |
|
1713
|
|
|
} |
|
1714
|
|
|
|
|
1715
|
|
|
$ret[] = $group; |
|
1716
|
|
|
} |
|
1717
|
|
|
return $ret; |
|
1718
|
|
|
} |
|
1719
|
|
|
|
|
1720
|
|
|
/** |
|
1721
|
|
|
* return a list of concept group instances, sorted by label |
|
1722
|
|
|
* @param string $groupClass URI of concept group class |
|
1723
|
|
|
* @param string $lang language of labels to return |
|
1724
|
|
|
* @return array Result array with group URI as key and group label as value |
|
1725
|
|
|
*/ |
|
1726
|
|
|
public function listConceptGroups($groupClass, $lang) { |
|
1727
|
|
|
$query = $this->generateConceptGroupsQuery($groupClass, $lang); |
|
1728
|
|
|
$result = $this->client->query($query); |
|
1729
|
|
|
return $this->transformConceptGroupsResults($result); |
|
1730
|
|
|
} |
|
1731
|
|
|
|
|
1732
|
|
|
/** |
|
1733
|
|
|
* Generates the sparql query for listConceptGroupContents |
|
1734
|
|
|
* @param string $groupClass URI of concept group class |
|
1735
|
|
|
* @param string $group URI of the concept group instance |
|
1736
|
|
|
* @param string $lang language of labels to return |
|
1737
|
|
|
* @return string sparql query |
|
1738
|
|
|
*/ |
|
1739
|
|
|
private function generateConceptGroupContentsQuery($groupClass, $group, $lang) { |
|
1740
|
|
|
$gc = $this->graphClause; |
|
1741
|
|
|
$query = <<<EOQ |
|
1742
|
|
|
SELECT ?conc ?super ?label ?members ?type ?notation |
|
1743
|
|
|
WHERE { |
|
1744
|
|
|
$gc { |
|
1745
|
|
|
<$group> a <$groupClass> . |
|
1746
|
|
|
{ <$group> skos:member ?conc . } UNION { ?conc isothes:superGroup <$group> } |
|
1747
|
|
|
FILTER NOT EXISTS { ?conc owl:deprecated true } |
|
1748
|
|
|
?conc a ?type . |
|
1749
|
|
|
OPTIONAL { ?conc skos:prefLabel ?label . |
|
1750
|
|
|
FILTER (langMatches(lang(?label), '$lang')) |
|
1751
|
|
|
} |
|
1752
|
|
|
OPTIONAL { ?conc skos:prefLabel ?label . } |
|
1753
|
|
|
OPTIONAL { ?conc skos:notation ?notation } |
|
1754
|
|
|
} |
|
1755
|
|
|
BIND(EXISTS{?submembers isothes:superGroup ?conc} as ?super) |
|
1756
|
|
|
BIND(EXISTS{?conc skos:member ?submembers} as ?members) |
|
1757
|
|
|
} ORDER BY lcase(?label) |
|
1758
|
|
|
EOQ; |
|
1759
|
|
|
return $query; |
|
1760
|
|
|
} |
|
1761
|
|
|
|
|
1762
|
|
|
/** |
|
1763
|
|
|
* Transforms the sparql query result into an array. |
|
1764
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1765
|
|
|
* @param string $lang language of labels to return |
|
1766
|
|
|
* @return array |
|
1767
|
|
|
*/ |
|
1768
|
|
|
private function transformConceptGroupContentsResults($result, $lang) { |
|
1769
|
|
|
$ret = array(); |
|
1770
|
|
|
$values = array(); |
|
1771
|
|
|
foreach ($result as $row) { |
|
1772
|
|
|
if (!array_key_exists($row->conc->getURI(), $values)) { |
|
1773
|
|
|
$values[$row->conc->getURI()] = array( |
|
1774
|
|
|
'uri' => $row->conc->getURI(), |
|
1775
|
|
|
'isSuper' => $row->super->getValue(), |
|
1776
|
|
|
'hasMembers' => $row->members->getValue(), |
|
1777
|
|
|
'type' => array($row->type->shorten()), |
|
1778
|
|
|
); |
|
1779
|
|
|
if (isset($row->label)) { |
|
1780
|
|
|
if ($row->label->getLang() == $lang) { |
|
1781
|
|
|
$values[$row->conc->getURI()]['prefLabel'] = $row->label->getValue(); |
|
1782
|
|
|
} else { |
|
1783
|
|
|
$values[$row->conc->getURI()]['prefLabel'] = $row->label->getValue() . " (" . $row->label->getLang() . ")"; |
|
1784
|
|
|
} |
|
1785
|
|
|
|
|
1786
|
|
|
} |
|
1787
|
|
|
if (isset($row->notation)) { |
|
1788
|
|
|
$values[$row->conc->getURI()]['notation'] = $row->notation->getValue(); |
|
1789
|
|
|
} |
|
1790
|
|
|
|
|
1791
|
|
|
} else { |
|
1792
|
|
|
$values[$row->conc->getURI()]['type'][] = $row->type->shorten(); |
|
1793
|
|
|
} |
|
1794
|
|
|
} |
|
1795
|
|
|
|
|
1796
|
|
|
foreach ($values as $val) { |
|
1797
|
|
|
$ret[] = $val; |
|
1798
|
|
|
} |
|
1799
|
|
|
|
|
1800
|
|
|
return $ret; |
|
1801
|
|
|
} |
|
1802
|
|
|
|
|
1803
|
|
|
/** |
|
1804
|
|
|
* return a list of concepts in a concept group |
|
1805
|
|
|
* @param string $groupClass URI of concept group class |
|
1806
|
|
|
* @param string $group URI of the concept group instance |
|
1807
|
|
|
* @param string $lang language of labels to return |
|
1808
|
|
|
* @return array Result array with concept URI as key and concept label as value |
|
1809
|
|
|
*/ |
|
1810
|
|
|
public function listConceptGroupContents($groupClass, $group, $lang) { |
|
1811
|
|
|
$query = $this->generateConceptGroupContentsQuery($groupClass, $group, $lang); |
|
1812
|
|
|
$result = $this->client->query($query); |
|
1813
|
|
|
return $this->transformConceptGroupContentsResults($result, $lang); |
|
1814
|
|
|
} |
|
1815
|
|
|
|
|
1816
|
|
|
/** |
|
1817
|
|
|
* Generates the sparql query for queryChangeList. |
|
1818
|
|
|
* @param string $lang language of labels to return. |
|
1819
|
|
|
* @param int $offset offset of results to retrieve; 0 for beginning of list |
|
1820
|
|
|
* @return string sparql query |
|
1821
|
|
|
*/ |
|
1822
|
|
View Code Duplication |
private function generateChangeListQuery($lang, $offset, $prop) { |
|
|
|
|
|
|
1823
|
|
|
$gc = $this->graphClause; |
|
1824
|
|
|
$offset = ($offset) ? 'OFFSET ' . $offset : ''; |
|
1825
|
|
|
|
|
1826
|
|
|
$query = <<<EOQ |
|
1827
|
|
|
SELECT DISTINCT ?concept ?date ?label |
|
1828
|
|
|
WHERE { |
|
1829
|
|
|
$gc { |
|
1830
|
|
|
?concept a skos:Concept . |
|
1831
|
|
|
?concept $prop ?date . |
|
1832
|
|
|
?concept skos:prefLabel ?label . |
|
1833
|
|
|
FILTER (langMatches(lang(?label), '$lang')) |
|
1834
|
|
|
} |
|
1835
|
|
|
} |
|
1836
|
|
|
ORDER BY DESC(YEAR(?date)) DESC(MONTH(?date)) LCASE(?label) |
|
1837
|
|
|
LIMIT 200 $offset |
|
1838
|
|
|
EOQ; |
|
1839
|
|
|
return $query; |
|
1840
|
|
|
} |
|
1841
|
|
|
|
|
1842
|
|
|
/** |
|
1843
|
|
|
* Transforms the sparql query result into an array. |
|
1844
|
|
|
* @param EasyRdf_Sparql_Result $result |
|
1845
|
|
|
* @return array |
|
1846
|
|
|
*/ |
|
1847
|
|
View Code Duplication |
private function transformChangeListResults($result) { |
|
|
|
|
|
|
1848
|
|
|
$ret = array(); |
|
1849
|
|
|
foreach ($result as $row) { |
|
1850
|
|
|
$concept = array('uri' => $row->concept->getURI()); |
|
1851
|
|
|
if (isset($row->label)) { |
|
1852
|
|
|
$concept['prefLabel'] = $row->label->getValue(); |
|
1853
|
|
|
} |
|
1854
|
|
|
|
|
1855
|
|
|
if (isset($row->date)) { |
|
1856
|
|
|
$concept['date'] = $row->date->getValue(); |
|
1857
|
|
|
} |
|
1858
|
|
|
|
|
1859
|
|
|
$ret[] = $concept; |
|
1860
|
|
|
} |
|
1861
|
|
|
return $ret; |
|
1862
|
|
|
} |
|
1863
|
|
|
|
|
1864
|
|
|
/** |
|
1865
|
|
|
* return a list of recently changed or entirely new concepts |
|
1866
|
|
|
* @param string $lang language of labels to return |
|
1867
|
|
|
* @param int $offset offset of results to retrieve; 0 for beginning of list |
|
1868
|
|
|
* @return array Result array |
|
1869
|
|
|
*/ |
|
1870
|
|
|
public function queryChangeList($lang, $offset, $prop) { |
|
1871
|
|
|
$query = $this->generateChangeListQuery($lang, $offset, $prop); |
|
1872
|
|
|
$result = $this->client->query($query); |
|
1873
|
|
|
return $this->transformChangeListResults($result); |
|
1874
|
|
|
} |
|
1875
|
|
|
} |
|
1876
|
|
|
|
NatLibFi /
Skosmos
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.