README

此仓库为Robo提供SPARQL任务。

安装说明

在easyrdf/easyrdf包稳定到1.0.0版本之前，根Composer文件必须显式要求easyrdf/easyrdf。有关详细信息，请参阅此问题：easyrdf/easyrdf#320。EasyRDF稳定后，库将重新移回require部分。

任务

查询

$query1 = 'SELECT ?s ?p ?o WHERE { ?s ?p ?o } LIMIT 100';
$query2 = '...';

$result = $this->taskSparqlQuery()
    ->setEndpointUrl('http://example.com/sparql')
    ->addQuery($query1)
    ->addQuery($query2)
    ->run();

// Result of $query1.
$res1 = $result->getData()['result'][$query1];
// Result of $query2.
$res2 = $result->getData()['result'][$query2];

从字符串导入三元组

$triples1 = <<<TRIPLES
<?xml version="1.0"?>
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:si="https://w3schools.org.cn/rdf/">
<rdf:Description rdf:about="https://w3schools.org.cn">
  <si:title>W3Schools</si:title>
  <si:author>Jan Egil Refsnes</si:author>
</rdf:Description>
</rdf:RDF>
TRIPLES;
$triples2 = <<<TRIPLES
<?xml version="1.0"?>
<RDF>
  <Description about="https://w3schools.org.cn/rdf">
    <author>Jan Egil Refsnes</author>
    <homepage>https://w3schools.org.cn</homepage>
  </Description>
</RDF>
TRIPLES;

$this->taskSparqlImportFromString()
    ->setEndpointUrl('http://example.com/sparql-graph-crud')
    ->addTriples('http://example.com/graph1', $triples1)
    ->addTriples('http://example.com/graph2', $triples2)
    ->run();

从文件导入三元组

$this->taskSparqlImportFromFile()
    ->setEndpointUrl('http://example.com/sparql-graph-crud')
    ->addTriples('http://example.com/graph1', '/path/to/file.rdf')
    ->addTriples('http://example.com/graph2', '/other/path/to/file2.rdf')
    ->run();