Examples with Operation org.apache.jena.fuseki.server.Operation used on opensource projects

Example 6 with Operation

use of org.apache.jena.fuseki.server.Operation in project jena by apache.

the class ExFuseki_01_NamedService method main.

public static void main(String... args) {
    // Create a new operation: operations are really just names (symbols). The code to
    // run is found by looking up the operation in a per-server table that gives the server-specific
    // implementation as an ActionService.
    Operation myOperation = Operation.alloc("http://example/special1", "special1", "Custom operation");
    // Service endpoint name.
    // This can be different for different datasets even in the same server.
    // c.f. {@code fuseki:serviceQuery}
    String endpointName = "special";
    // The handled for the new operation.
    ActionService customHandler = new DemoService();
    FusekiServer server = FusekiServer.create().port(PORT).verbose(true).registerOperation(myOperation, customHandler).add(DATASET, DatasetGraphFactory.createTxnMem(), true).addEndpoint(DATASET, endpointName, myOperation).build();
    // Start the server. This does not block this thread.
    server.start();
    // Try some operations on the server using the service URL.
    String customOperationURL = SERVER_URL + DATASET + "/" + endpointName;
    try {
        // Service endpoint name : GET
        String s1 = HttpOp.httpGetString(customOperationURL);
        System.out.print(s1);
        if (s1 == null)
            System.out.println();
        // Service endpoint name : POST
        try (TypedInputStream stream = HttpOp.httpPostStream(customOperationURL, "text/plain")) {
            String s2 = FileUtils.readWholeFileAsUTF8(stream);
            System.out.print(s2);
            if (s2 == null)
                System.out.println();
        } catch (IOException ex) {
            IO.exception(ex);
        }
        // Service endpoint name. DELETE -> fails 405
        try {
            HttpOp.httpDelete(customOperationURL);
            throw new IllegalStateException("DELETE succeeded");
        } catch (HttpException ex) {
            if (ex.getStatusCode() != HttpSC.METHOD_NOT_ALLOWED_405)
                System.err.println("Unexpected HTTP Response Code: " + ex.getMessage());
            else
                System.out.println("DELETE rejected correctly: " + ex.getMessage());
        }
    } finally {
        server.stop();
    }
}

Example 7 with Operation

use of org.apache.jena.fuseki.server.Operation in project jena by apache.

the class ExFuseki_02_Config_DataService method main.

public static void main(String... args) {
    // Register a new operation
    Operation myOperation = Operation.alloc("http://example/special2", "special2", "Custom operation");
    // Service endpoint names.
    String queryEndpoint = "q";
    String customEndpoint = "x";
    // Make a DataService with custom named for endpoints.
    // In this example, "q" for SPARQL query and "x" for our custom extension and no others.
    DatasetGraph dsg = DatasetGraphFactory.createTxnMem();
    DataService dataService = DataService.newBuilder(dsg).addEndpoint(myOperation, customEndpoint).addEndpoint(Operation.Query, queryEndpoint).build();
    // This will be the code to handled for the operation.
    ActionService customHandler = new DemoService();
    FusekiServer server = FusekiServer.create().port(PORT).verbose(true).registerOperation(myOperation, customHandler).add(DATASET, dataService).build();
    server.start();
    // Try some operations on the server using the service URL.
    String customOperationURL = SERVER_URL + DATASET + "/" + customEndpoint;
    String queryOperationURL = SERVER_URL + DATASET + "/" + queryEndpoint;
    Query query = QueryFactory.create("ASK{}");
    try {
        // Try custom name - OK
        try (QueryExecution qExec = QueryExecution.service(queryOperationURL, query)) {
            qExec.execAsk();
        }
        // Try the usual default name, which is not configured in the DataService so expect a 404.
        try (QueryExecution qExec = QueryExecution.service(SERVER_URL + DATASET + "/sparql", query)) {
            qExec.execAsk();
            throw new RuntimeException("Didn't fail");
        } catch (QueryExceptionHTTP ex) {
            if (ex.getStatusCode() != HttpSC.NOT_FOUND_404) {
                throw new RuntimeException("Not a 404", ex);
            }
        }
        // Make an HTTP GET to the custom operation.
        // Service endpoint name : GET
        String s1 = HttpOp.httpGetString(customOperationURL);
        if (s1 == null)
            throw new RuntimeException("Failed: " + customOperationURL);
    } finally {
        server.stop();
    }
}

Example 8 with Operation

use of org.apache.jena.fuseki.server.Operation in project jena by apache.

the class Shacl03_FusekiValidationService method main.

public static void main(String... a) throws IOException {
    FusekiLogging.setLogging();
    // If not standard registration...
    Operation op = Operation.alloc(FusekiVocab.NS + "shacl", "shacl", "SHACL valdiation");
    // FusekiExt.registerOperation(op, new SHACL_Validation());
    // FusekiExt.addDefaultEndpoint(op, "shacl");
    // Operation op = Operation.Shacl;
    FusekiServer server = FusekiServer.create().port(3030).add("/ds", DatasetGraphFactory.createTxnMem(), true).addEndpoint("/ds", "shacl", op).build();
    try {
        server.start();
        try (RDFConnection conn = RDFConnection.connect("http://localhost:3030/ds")) {
            conn.put("fu-data.ttl");
        }
        ValidationReport report = validateReport("http://localhost:3030/ds/shacl?graph=default", "fu-shapes.ttl");
        System.out.println();
        ShLib.printReport(report);
        System.out.println();
        System.out.println("- - - - - - - - - - - - - - - - - -");
        System.out.println();
        RDFDataMgr.write(System.out, report.getGraph(), Lang.TTL);
        System.out.println();
    } finally {
        server.stop();
    }
}