/**
* Parses a given string and returns an iterator containing Statement instances representing the
* previously read data.
*
* @param string $inputString Data string containing RDF serialized data.
* @param string $baseUri The base URI of the parsed content. If this URI is null the
* inputStreams URL is taken as base URI.
* @param string $serialization The serialization of the inputStream. If null is given the
* parser will either apply some standard serialization, or the
* only one it is supporting, or will try to guess the correct
* serialization, or will throw an Exception.
* For more information have a look here:
* http://safting.github.io/doc/phpframework/data/
* @return StatementIterator StatementIterator instaince containing all the Statements parsed by the
* parser to far
* @throws \Exception If the base URI $baseUri is no valid URI.
*/
public function parseStringToIterator($inputString, $baseUri = null, $serialization = null)
{
$graph = new Graph();
// let EasyRdf guess the format
if ($serialization === null) {
$serialization = Format::guessFormat($inputString);
} else {
$serialization = Format::getFormat($serialization);
}
// if format is still null, throw exception, because we dont know what format the given stream is
if (null === $serialization) {
throw new \Exception('Either given $serialization is unknown or the parser could not guess the format.');
}
$graph->parse($inputString, $serialization->getName());
// transform parsed data to PHP array
return $this->rdfPhpToStatementIterator($graph->toRdfPhp());
}