Examples with LinkedDataSource won.protocol.util.linkeddata.LinkedDataSource used on opensource projects

Example 1 with LinkedDataSource

use of won.protocol.util.linkeddata.LinkedDataSource in project webofneeds by researchstudio-sat.

the class BATestScriptListener method assertCorrectConnectionState.

private void assertCorrectConnectionState(final URI fromCon, final BATestScriptAction action) {
    LinkedDataSource linkedDataSource = getEventListenerContext().getLinkedDataSource();
    if (linkedDataSource instanceof CachingLinkedDataSource) {
        ((CachingLinkedDataSource) linkedDataSource).invalidate(fromCon);
    }
    logger.debug("fromCon {}, stateOfSenderBeforeSending{}", fromCon, action.getStateOfSenderBeforeSending());
    Dataset dataModel = linkedDataSource.getDataForResource(fromCon);
    logger.debug("crawled dataset for fromCon {}: {}", fromCon, RdfUtils.toString(dataModel));
    String sparqlPrefix = "PREFIX rdfs:  <http://www.w3.org/2000/01/rdf-schema#>" + "PREFIX geo:   <http://www.w3.org/2003/01/geo/wgs84_pos#>" + "PREFIX xsd:   <http://www.w3.org/2001/XMLSchema#>" + "PREFIX rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#>" + "PREFIX won:   <http://purl.org/webofneeds/model#>" + "PREFIX wontx:   <http://purl.org/webofneeds/tx/model#>" + "PREFIX gr:    <http://purl.org/goodrelations/v1#>" + "PREFIX sioc:  <http://rdfs.org/sioc/ns#>" + "PREFIX ldp:   <http://www.w3.org/ns/ldp#>";
    String queryString = sparqlPrefix + "ASK WHERE { ?con wontx:hasBAState ?state }";
    QuerySolutionMap binding = new QuerySolutionMap();
    binding.add("con", new ResourceImpl(fromCon.toString()));
    binding.add("state", new ResourceImpl(action.getStateOfSenderBeforeSending().toString()));
    Query query = QueryFactory.create(queryString);
    QueryExecution qExec = QueryExecutionFactory.create(query, dataModel, binding);
    boolean result = qExec.execAsk();
    // check if the connection is really in the state required for the action
    if (result)
        return;
    // we detected an error. Throw an exception.
    // query again, this time fetch the state so we can display an informaitive error message
    queryString = sparqlPrefix + "SELECT ?state WHERE { ?con wontx:hasBAState ?state }";
    binding = new QuerySolutionMap();
    binding.add("con", new ResourceImpl(fromCon.toString()));
    query = QueryFactory.create(queryString);
    qExec = QueryExecutionFactory.create(query, dataModel, binding);
    ResultSet res = qExec.execSelect();
    if (!res.hasNext()) {
        throw new IllegalStateException("connection state of connection " + fromCon + " does " + "not allow next action " + action + ". Could not determine actual connection state: not found");
    }
    QuerySolution solution = res.next();
    RDFNode state = solution.get("state");
    throw new IllegalStateException("connection state " + state + " of connection " + fromCon + " does " + "not allow next action " + action);
}

Example 2 with LinkedDataSource

use of won.protocol.util.linkeddata.LinkedDataSource in project webofneeds by researchstudio-sat.

the class CrawlConnectionDataBehaviour method onActivate.

@Override
protected void onActivate(Optional<Object> message) {
    logger.debug("activating crawling connection data for connection {}", command.getConnectionURI());
    logger.debug("will deactivate autmatically after " + abortTimeout);
    LinkedDataSource linkedDataSource = context.getLinkedDataSource();
    if (linkedDataSource instanceof CachingLinkedDataSource) {
        URI toInvalidate = WonLinkedDataUtils.getEventContainerURIforConnectionURI(command.getConnectionURI(), linkedDataSource);
        ((CachingLinkedDataSource) linkedDataSource).invalidate(toInvalidate);
        ((CachingLinkedDataSource) linkedDataSource).invalidate(toInvalidate, command.getNeedURI());
        URI remoteConnectionUri = WonLinkedDataUtils.getRemoteConnectionURIforConnectionURI(command.getConnectionURI(), linkedDataSource);
        toInvalidate = WonLinkedDataUtils.getEventContainerURIforConnectionURI(remoteConnectionUri, linkedDataSource);
        ((CachingLinkedDataSource) linkedDataSource).invalidate(toInvalidate);
        ((CachingLinkedDataSource) linkedDataSource).invalidate(toInvalidate, command.getNeedURI());
    }
    context.getTaskScheduler().schedule(new Runnable() {

        @Override
        public void run() {
            deactivate();
        }
    }, new Date(System.currentTimeMillis() + abortTimeout.toMillis()));
    ;
    List<Path> propertyPaths = new ArrayList<>();
    PrefixMapping pmap = new PrefixMappingImpl();
    pmap.withDefaultMappings(PrefixMapping.Standard);
    pmap.setNsPrefix("won", WON.getURI());
    pmap.setNsPrefix("msg", WONMSG.getURI());
    propertyPaths.add(PathParser.parse("won:hasEventContainer", pmap));
    propertyPaths.add(PathParser.parse("won:hasEventContainer/rdfs:member", pmap));
    CrawlCommandEvent crawlNeedCommandEvent = new CrawlCommandEvent(command.getNeedURI(), command.getNeedURI(), propertyPaths, 10000, 5);
    propertyPaths = new ArrayList();
    propertyPaths.add(PathParser.parse("won:hasEventContainer", pmap));
    propertyPaths.add(PathParser.parse("won:hasEventContainer/rdfs:member", pmap));
    propertyPaths.add(PathParser.parse("won:hasEventContainer/rdfs:member/msg:hasCorrespondingRemoteMessage", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteNeed", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteNeed/won:hasEventContainer", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteNeed/won:hasEventContainer/rdfs:member", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteConnection", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteConnection/won:hasEventContainer", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteConnection/won:hasEventContainer/rdfs:member", pmap));
    propertyPaths.add(PathParser.parse("won:hasRemoteConnection/won:hasEventContainer/rdfs:member/msg:hasCorrespondingRemoteMessage", pmap));
    CrawlCommandEvent crawlConnectionCommandEvent = new CrawlCommandEvent(command.getNeedURI(), command.getConnectionURI(), propertyPaths, 10000, 5);
    Dataset crawledData = DatasetFactory.createGeneral();
    // add crawlcommand listener
    this.subscribeWithAutoCleanup(CrawlCommandEvent.class, new ActionOnEventListener(context, new OrFilter(new SameEventFilter(crawlNeedCommandEvent), new SameEventFilter(crawlConnectionCommandEvent)), new CrawlAction(context)));
    // when the first crawl succeeds, start the second
    this.subscribeWithAutoCleanup(CrawlCommandSuccessEvent.class, new ActionOnEventListener(context, new CommandResultFilter(crawlNeedCommandEvent), new BaseEventBotAction(context) {

        @Override
        protected void doRun(Event event, EventListener executingListener) throws Exception {
            logger.debug("finished crawling need data. ");
            Dataset dataset = ((CrawlCommandSuccessEvent) event).getCrawledData();
            RdfUtils.addDatasetToDataset(crawledData, dataset);
            // now crawl connection data
            context.getEventBus().publish(crawlConnectionCommandEvent);
        }
    }));
    // when we're done crawling, validate:
    this.subscribeWithAutoCleanup(CrawlCommandSuccessEvent.class, new ActionOnEventListener(context, new CommandResultFilter(crawlConnectionCommandEvent), new BaseEventBotAction(context) {

        @Override
        protected void doRun(Event event, EventListener executingListener) throws Exception {
            logger.debug("finished crawling need data for connection {}", command.getConnectionURI());
            Dataset dataset = ((CrawlCommandSuccessEvent) event).getCrawledData();
            RdfUtils.addDatasetToDataset(crawledData, dataset);
            context.getEventBus().publish(new CrawlConnectionCommandSuccessEvent(command, crawledData));
            deactivate();
        }
    }));
    // when something goes wrong, abort
    this.subscribeWithAutoCleanup(CrawlCommandFailureEvent.class, new ActionOnFirstEventListener(context, new OrFilter(new CommandResultFilter(crawlConnectionCommandEvent), new CommandResultFilter(crawlNeedCommandEvent)), new BaseEventBotAction(context) {

        @Override
        protected void doRun(Event event, EventListener executingListener) throws Exception {
            CrawlCommandFailureEvent failureEvent = (CrawlCommandFailureEvent) event;
            logger.debug("crawling failed for connection {}, message: {}", command.getConnectionURI(), failureEvent.getMessage());
            context.getEventBus().publish(new CrawlConnectionCommandFailureEvent(failureEvent.getMessage(), command));
            deactivate();
        }
    }));
    // start crawling the need  - connection will be crawled when need crawling is done
    context.getEventBus().publish(crawlNeedCommandEvent);
}