Examples with GenericType javax.ws.rs.core.GenericType used on opensource projects

Example 21 with GenericType

use of javax.ws.rs.core.GenericType in project jersey by jersey.

the class WebResourceFactory method invoke.

@Override
@SuppressWarnings("unchecked")
public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
    if (args == null && method.getName().equals("toString")) {
        return toString();
    }
    if (args == null && method.getName().equals("hashCode")) {
        //unique instance in the JVM, and no need to override
        return hashCode();
    }
    if (args != null && args.length == 1 && method.getName().equals("equals")) {
        //unique instance in the JVM, and no need to override
        return equals(args[0]);
    }
    // get the interface describing the resource
    final Class<?> proxyIfc = proxy.getClass().getInterfaces()[0];
    // response type
    final Class<?> responseType = method.getReturnType();
    // determine method name
    String httpMethod = getHttpMethodName(method);
    if (httpMethod == null) {
        for (final Annotation ann : method.getAnnotations()) {
            httpMethod = getHttpMethodName(ann.annotationType());
            if (httpMethod != null) {
                break;
            }
        }
    }
    // create a new UriBuilder appending the @Path attached to the method
    WebTarget newTarget = addPathFromAnnotation(method, target);
    if (httpMethod == null) {
        if (newTarget == target) {
            // no path annotation on the method -> fail
            throw new UnsupportedOperationException("Not a resource method.");
        } else if (!responseType.isInterface()) {
            // not interface - can't help here
            throw new UnsupportedOperationException("Return type not an interface");
        }
    }
    // process method params (build maps of (Path|Form|Cookie|Matrix|Header..)Params
    // and extract entity type
    final MultivaluedHashMap<String, Object> headers = new MultivaluedHashMap<String, Object>(this.headers);
    final LinkedList<Cookie> cookies = new LinkedList<>(this.cookies);
    final Form form = new Form();
    form.asMap().putAll(this.form.asMap());
    final Annotation[][] paramAnns = method.getParameterAnnotations();
    Object entity = null;
    Type entityType = null;
    for (int i = 0; i < paramAnns.length; i++) {
        final Map<Class, Annotation> anns = new HashMap<>();
        for (final Annotation ann : paramAnns[i]) {
            anns.put(ann.annotationType(), ann);
        }
        Annotation ann;
        Object value = args[i];
        if (!hasAnyParamAnnotation(anns)) {
            entityType = method.getGenericParameterTypes()[i];
            entity = value;
        } else {
            if (value == null && (ann = anns.get(DefaultValue.class)) != null) {
                value = ((DefaultValue) ann).value();
            }
            if (value != null) {
                if ((ann = anns.get(PathParam.class)) != null) {
                    newTarget = newTarget.resolveTemplate(((PathParam) ann).value(), value);
                } else if ((ann = anns.get((QueryParam.class))) != null) {
                    if (value instanceof Collection) {
                        newTarget = newTarget.queryParam(((QueryParam) ann).value(), convert((Collection) value));
                    } else {
                        newTarget = newTarget.queryParam(((QueryParam) ann).value(), value);
                    }
                } else if ((ann = anns.get((HeaderParam.class))) != null) {
                    if (value instanceof Collection) {
                        headers.addAll(((HeaderParam) ann).value(), convert((Collection) value));
                    } else {
                        headers.addAll(((HeaderParam) ann).value(), value);
                    }
                } else if ((ann = anns.get((CookieParam.class))) != null) {
                    final String name = ((CookieParam) ann).value();
                    Cookie c;
                    if (value instanceof Collection) {
                        for (final Object v : ((Collection) value)) {
                            if (!(v instanceof Cookie)) {
                                c = new Cookie(name, v.toString());
                            } else {
                                c = (Cookie) v;
                                if (!name.equals(((Cookie) v).getName())) {
                                    // is this the right thing to do? or should I fail? or ignore the difference?
                                    c = new Cookie(name, c.getValue(), c.getPath(), c.getDomain(), c.getVersion());
                                }
                            }
                            cookies.add(c);
                        }
                    } else {
                        if (!(value instanceof Cookie)) {
                            cookies.add(new Cookie(name, value.toString()));
                        } else {
                            c = (Cookie) value;
                            if (!name.equals(((Cookie) value).getName())) {
                                // is this the right thing to do? or should I fail? or ignore the difference?
                                cookies.add(new Cookie(name, c.getValue(), c.getPath(), c.getDomain(), c.getVersion()));
                            }
                        }
                    }
                } else if ((ann = anns.get((MatrixParam.class))) != null) {
                    if (value instanceof Collection) {
                        newTarget = newTarget.matrixParam(((MatrixParam) ann).value(), convert((Collection) value));
                    } else {
                        newTarget = newTarget.matrixParam(((MatrixParam) ann).value(), value);
                    }
                } else if ((ann = anns.get((FormParam.class))) != null) {
                    if (value instanceof Collection) {
                        for (final Object v : ((Collection) value)) {
                            form.param(((FormParam) ann).value(), v.toString());
                        }
                    } else {
                        form.param(((FormParam) ann).value(), value.toString());
                    }
                }
            }
        }
    }
    if (httpMethod == null) {
        // the method is a subresource locator
        return WebResourceFactory.newResource(responseType, newTarget, true, headers, cookies, form);
    }
    // accepted media types
    Produces produces = method.getAnnotation(Produces.class);
    if (produces == null) {
        produces = proxyIfc.getAnnotation(Produces.class);
    }
    final String[] accepts = (produces == null) ? EMPTY : produces.value();
    // determine content type
    String contentType = null;
    if (entity != null) {
        final List<Object> contentTypeEntries = headers.get(HttpHeaders.CONTENT_TYPE);
        if ((contentTypeEntries != null) && (!contentTypeEntries.isEmpty())) {
            contentType = contentTypeEntries.get(0).toString();
        } else {
            Consumes consumes = method.getAnnotation(Consumes.class);
            if (consumes == null) {
                consumes = proxyIfc.getAnnotation(Consumes.class);
            }
            if (consumes != null && consumes.value().length > 0) {
                contentType = consumes.value()[0];
            }
        }
    }
    Invocation.Builder builder = newTarget.request().headers(// this resets all headers so do this first
    headers).accept(// if @Produces is defined, propagate values into Accept header; empty array is NO-OP
    accepts);
    for (final Cookie c : cookies) {
        builder = builder.cookie(c);
    }
    final Object result;
    if (entity == null && !form.asMap().isEmpty()) {
        entity = form;
        contentType = MediaType.APPLICATION_FORM_URLENCODED;
    } else {
        if (contentType == null) {
            contentType = MediaType.APPLICATION_OCTET_STREAM;
        }
        if (!form.asMap().isEmpty()) {
            if (entity instanceof Form) {
                ((Form) entity).asMap().putAll(form.asMap());
            } else {
            // TODO: should at least log some warning here
            }
        }
    }
    final GenericType responseGenericType = new GenericType(method.getGenericReturnType());
    if (entity != null) {
        if (entityType instanceof ParameterizedType) {
            entity = new GenericEntity(entity, entityType);
        }
        result = builder.method(httpMethod, Entity.entity(entity, contentType), responseGenericType);
    } else {
        result = builder.method(httpMethod, responseGenericType);
    }
    return result;
}

Example 22 with GenericType

use of javax.ws.rs.core.GenericType in project jersey by jersey.

the class RxListenableFutureTest method testReadEntityViaGenericType.

@Test
public void testReadEntityViaGenericType() throws Throwable {
    client.register(RxListenableFutureInvokerProvider.class);
    final String response = client.target("http://jersey.java.net").request().rx(RxListenableFutureInvoker.class).get(new GenericType<String>() {
    }).get();
    assertThat(response, is("NO-ENTITY"));
}

Example 23 with GenericType

use of javax.ws.rs.core.GenericType in project jersey by jersey.

the class CompletionStageAgentResource method recommended.

private CompletionStage<List<Recommendation>> recommended(final WebTarget destinationTarget, final ExecutorService executor, final Queue<String> errors) {
    // Recommended places.
    final CompletionStage<List<Destination>> recommended = destinationTarget.path("recommended").request().header("Rx-User", "CompletionStage").rx(executor).get(new GenericType<List<Destination>>() {
    }).exceptionally(throwable -> {
        errors.offer("Recommended: " + throwable.getMessage());
        return Collections.emptyList();
    });
    return recommended.thenCompose(destinations -> {
        final WebTarget finalForecast = forecastTarget;
        final WebTarget finalCalculation = calculationTarget;
        List<CompletionStage<Recommendation>> recommendations = destinations.stream().map(destination -> {
            final CompletionStage<Forecast> forecast = finalForecast.resolveTemplate("destination", destination.getDestination()).request().rx(executor).get(Forecast.class).exceptionally(throwable -> {
                errors.offer("Forecast: " + throwable.getMessage());
                return new Forecast(destination.getDestination(), "N/A");
            });
            final CompletionStage<Calculation> calculation = finalCalculation.resolveTemplate("from", "Moon").resolveTemplate("to", destination.getDestination()).request().rx(executor).get(Calculation.class).exceptionally(throwable -> {
                errors.offer("Calculation: " + throwable.getMessage());
                return new Calculation("Moon", destination.getDestination(), -1);
            });
            return CompletableFuture.completedFuture(new Recommendation(destination)).thenCombine(forecast, Recommendation::forecast).thenCombine(calculation, Recommendation::calculation);
        }).collect(Collectors.toList());
        return sequence(recommendations);
    });
}

Example 24 with GenericType

use of javax.ws.rs.core.GenericType in project jersey by jersey.

the class ListenableFutureAgentResource method recommended.

private ListenableFuture<AgentResponse> recommended(final AgentResponse response) {
    destination.register(RxListenableFutureInvokerProvider.class);
    // Get a list of recommended destinations ...
    final ListenableFuture<List<Destination>> destinations = destination.path("recommended").request().header("Rx-User", "Guava").rx(RxListenableFutureInvoker.class).get(new GenericType<List<Destination>>() {
    });
    // ... transform them to Recommendation instances ...
    final ListenableFuture<List<Recommendation>> recommendations = Futures.transform(destinations, (AsyncFunction<List<Destination>, List<Recommendation>>) destinationList -> {
        final List<Recommendation> recommendationList = Lists.newArrayList(Lists.transform(destinationList, destination -> new Recommendation(destination.getDestination(), null, 0)));
        return Futures.immediateFuture(recommendationList);
    });
    // ... add forecasts and calculations ...
    final ListenableFuture<List<List<Recommendation>>> filledRecommendations = Futures.successfulAsList(Arrays.asList(// Add Forecasts to Recommendations.
    forecasts(recommendations), // Add Forecasts to Recommendations.
    calculations(recommendations)));
    // ... and transform the list into agent response with filled recommendations.
    return Futures.transform(filledRecommendations, (AsyncFunction<List<List<Recommendation>>, AgentResponse>) input -> {
        response.setRecommended(input.get(0));
        return Futures.immediateFuture(response);
    });
}

Example 25 with GenericType

use of javax.ws.rs.core.GenericType in project jersey by jersey.

the class SyncAgentResource method sync.

@GET
public AgentResponse sync() {
    final long time = System.nanoTime();
    final AgentResponse response = new AgentResponse();
    final Queue<String> errors = new ConcurrentLinkedQueue<>();
    // Obtain visited destinations.
    try {
        response.setVisited(destination.path("visited").request().header("Rx-User", "Sync").get(new GenericType<List<Destination>>() {
        }));
    } catch (final Throwable throwable) {
        errors.offer("Visited: " + throwable.getMessage());
    }
    // Obtain recommended destinations. (does not depend on visited ones)
    List<Destination> recommended = Collections.emptyList();
    try {
        recommended = destination.path("recommended").request().header("Rx-User", "Sync").get(new GenericType<List<Destination>>() {
        });
    } catch (final Throwable throwable) {
        errors.offer("Recommended: " + throwable.getMessage());
    }
    // Forecasts. (depend on recommended destinations)
    final Map<String, Forecast> forecasts = new HashMap<>();
    for (final Destination dest : recommended) {
        try {
            forecasts.put(dest.getDestination(), forecast.resolveTemplate("destination", dest.getDestination()).request().get(Forecast.class));
        } catch (final Throwable throwable) {
            errors.offer("Forecast: " + throwable.getMessage());
        }
    }
    // Calculations. (depend on recommended destinations)
    final Map<String, Calculation> calculations = new HashMap<>();
    recommended.stream().forEach(destination -> {
        try {
            calculations.put(destination.getDestination(), calculation.resolveTemplate("from", "Moon").resolveTemplate("to", destination.getDestination()).request().get(Calculation.class));
        } catch (final Throwable throwable) {
            errors.offer("Calculation: " + throwable.getMessage());
        }
    });
    // Recommendations.
    final List<Recommendation> recommendations = new ArrayList<>(recommended.size());
    for (final Destination dest : recommended) {
        final Forecast fore = forecasts.get(dest.getDestination());
        final Calculation calc = calculations.get(dest.getDestination());
        recommendations.add(new Recommendation(dest.getDestination(), fore != null ? fore.getForecast() : "N/A", calc != null ? calc.getPrice() : -1));
    }
    // Do something with errors.
    // ...
    response.setRecommended(recommendations);
    response.setProcessingTime((System.nanoTime() - time) / 1000000);
    return response;
}