/**
* Parse an RDF document into an EasyRdf_Graph
*
* @param object EasyRdf_Graph $graph the graph to load the data into
* @param string $data the RDF document data
* @param string $format the format of the input data
* @param string $baseUri the base URI of the data being parsed
* @return integer The number of triples added to the graph
*/
public function parse($graph, $data, $format, $baseUri)
{
parent::checkParseParams($graph, $data, $format, $baseUri);
$json = EasyRdf_Utils::execCommandPipe($this->rapperCmd, array('--quiet', '--input', $format, '--output', 'json', '--ignore-errors', '--input-uri', $baseUri, '--output-uri', '-', '-'), $data);
// Parse in the JSON
return parent::parse($graph, $json, 'json', $baseUri);
}
/**
* Serialise an EasyRdf_Graph to the RDF format of choice.
*
* @param object EasyRdf_Graph $graph An EasyRdf_Graph object.
* @param string $format The name of the format to convert to.
* @return string The RDF in the new desired format.
*/
public function serialise($graph, $format)
{
parent::checkSerialiseParams($graph, $format);
$ntriples = parent::serialise($graph, 'ntriples');
// Hack to produce more concise RDF/XML
if ($format == 'rdfxml') {
$format = 'rdfxml-abbrev';
}
return EasyRdf_Utils::execCommandPipe($this->_rapperCmd, array('--quiet', '--input', 'ntriples', '--output', $format, '-', 'unknown://'), $ntriples);
}
/**
* Internal function to render a graph into an image
*
* @ignore
*/
public function renderImage($graph, $format = 'png')
{
$dot = $this->serialiseDot($graph);
return EasyRdf_Utils::execCommandPipe($this->dotCommand, array("-T{$format}"), $dot);
}
public function testExecCommandPipeNotFound()
{
$this->setExpectedException('EasyRdf_Exception', 'Error while executing command no_such_command');
$output = EasyRdf_Utils::execCommandPipe('no_such_command');
}
