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<?php
namespace SMW\SPARQLStore;
use Onoi\HttpRequest\CurlRequest;
use RuntimeException;
use SMW\Connection\ConnectionProvider;
use SMW\SPARQLStore\RepositoryConnectors\FourstoreRepositoryConnector;
use SMW\SPARQLStore\RepositoryConnectors\FusekiRepositoryConnector;
use SMW\SPARQLStore\RepositoryConnectors\GenericRepositoryConnector;
use SMW\SPARQLStore\RepositoryConnectors\VirtuosoRepositoryConnector;
/**
* @private
*
* Provides a RepositoryConnection on the available settings.
*
* @license GNU GPL v2+
* @since 2.0
*
* @author mwjames
*/
class RepositoryConnectionProvider implements ConnectionProvider {
/**
* List of supported standard connectors
*
* @var array
*/
private $repositoryConnectors = [
'default' => GenericRepositoryConnector::class,
'generic' => GenericRepositoryConnector::class,
'sesame' => GenericRepositoryConnector::class,
'fuseki' => FusekiRepositoryConnector::class,
'virtuoso' => VirtuosoRepositoryConnector::class,
'4store' => FourstoreRepositoryConnector::class,
];
/**
* @var RepositoryConnection
*/
private $connection = null;
/**
* @var string|null
*/
private $connectorId = null;
/**
* @var string|null
*/
private $defaultGraph = null;
/**
* @var string|null
*/
private $queryEndpoint = null;
/**
* @var string|null
*/
private $updateEndpoint = null;
/**
* @var string|null
*/
private $dataEndpoint = null;
/**
* @var HttpRequest
*/
private $httpRequest;
/**
* @var boolean|integer
*/
private $httpVersion = false;
/**
* @since 2.0
*
* @param string|null $connectorId
* @param string|null $defaultGraph
* @param string|null $queryEndpoint
* @param string|null $updateEndpoint
* @param string|null $dataEndpoint
*/
public function __construct( $connectorId = null, $defaultGraph = null, $queryEndpoint = null, $updateEndpoint = null, $dataEndpoint = null ) {
$this->connectorId = $connectorId;
$this->defaultGraph = $defaultGraph;
$this->queryEndpoint = $queryEndpoint;
$this->updateEndpoint = $updateEndpoint;
$this->dataEndpoint = $dataEndpoint;
if ( $this->connectorId === null ) {
$this->connectorId = $GLOBALS['smwgSparqlRepositoryConnector'];
}
if ( $this->defaultGraph === null ) {
$this->defaultGraph = $GLOBALS['smwgSparqlDefaultGraph'];
}
if ( $this->queryEndpoint === null ) {
$this->queryEndpoint = $GLOBALS['smwgSparqlEndpoint']['query'];
}
if ( $this->updateEndpoint === null ) {
$this->updateEndpoint = $GLOBALS['smwgSparqlEndpoint']['update'];
}
if ( $this->dataEndpoint === null ) {
$this->dataEndpoint = $GLOBALS['smwgSparqlEndpoint']['data'];
}
}
/**
* @since 3.0
*
* @return HttpRequest $httpRequest
*/
public function setHttpRequest( HttpRequest $httpRequest ) {
$this->httpRequest = $httpRequest;
}
/**
* @since 2.3
*
* @return integer $httpVersion
*/
public function setHttpVersionTo( $httpVersion ) {
$this->httpVersion = $httpVersion;
}
/**
* @see ConnectionProvider::getConnection
*
* @since 2.0
*
* @return SparqlDatabase
* @throws RuntimeException
*/
public function getConnection() {
if ( $this->connection === null ) {
$this->connection = $this->connectTo( strtolower( $this->connectorId ) );
}
return $this->connection;
}
/**
* @see ConnectionProvider::releaseConnection
*
* @since 2.0
*/
public function releaseConnection() {
$this->connection = null;
}
private function connectTo( $id ) {
if ( $this->httpRequest === null ) {
$this->httpRequest = new CurlRequest( curl_init() );
}
// https://github.com/SemanticMediaWiki/SemanticMediaWiki/issues/1306
if ( $this->httpVersion ) {
$this->httpRequest->setOption( CURLOPT_HTTP_VERSION, $this->httpVersion );
}
$repositoryClient = new RepositoryClient(
$this->defaultGraph,
$this->queryEndpoint,
$this->updateEndpoint,
$this->dataEndpoint
);
$repositoryClient->setName( $id );
$repositoryConnector = $this->createRepositoryConnector(
$id,
$repositoryClient
);
if ( $this->isRepositoryConnection( $repositoryConnector ) ) {
return $repositoryConnector;
}
throw new RuntimeException( 'Expected a RepositoryConnection instance' );
}
private function createRepositoryConnector( $id, $repositoryClient ) {
$repositoryConnector = $this->repositoryConnectors['default'];
if ( isset( $this->repositoryConnectors[$id] ) ) {
$repositoryConnector = $this->repositoryConnectors[$id];
}
if ( $id === 'custom' ) {
$repositoryConnector = $GLOBALS['smwgSparqlCustomConnector'];
}
if ( !class_exists( $repositoryConnector ) ) {
throw new RuntimeException( "{$repositoryConnector} is not available" );
}
return new $repositoryConnector( $repositoryClient, $this->httpRequest );
}
private function isRepositoryConnection( $connection ) {
return $connection instanceof RepositoryConnection;
}
}
|
