Examples with Representation org.restlet.representation.Representation used on opensource projects

Example 96 with Representation

use of org.restlet.representation.Representation in project qi4j-sdk by Qi4j.

the class ResourceResponseWriter method writeResponse.

@Override
public boolean writeResponse(final Object result, final Response response) throws ResourceException {
    if (result instanceof Resource) {
        Resource resourceValue = (Resource) result;
        // Allowed methods
        response.getAllowedMethods().add(Method.GET);
        if (Iterables.matchesAny(LinksUtil.withRel("delete"), resourceValue.commands().get())) {
            response.getAllowedMethods().add(Method.DELETE);
        }
        if (Iterables.matchesAny(LinksUtil.withRel("update"), resourceValue.commands().get())) {
            response.getAllowedMethods().add(Method.PUT);
        }
        // Response according to what client accepts
        MediaType type = getVariant(response.getRequest(), ENGLISH, supportedMediaTypes).getMediaType();
        if (MediaType.APPLICATION_JSON.equals(type)) {
            response.setEntity(new StringRepresentation(resourceValue.toString(), MediaType.APPLICATION_JSON));
            return true;
        } else if (MediaType.TEXT_HTML.equals(type)) {
            Representation rep = new WriterRepresentation(MediaType.TEXT_HTML) {

                @Override
                public void write(Writer writer) throws IOException {
                    Map<String, Object> context = new HashMap<String, Object>();
                    context.put("request", response.getRequest());
                    context.put("response", response);
                    context.put("result", result);
                    try {
                        cfg.getTemplate("resource.htm").process(context, writer);
                    } catch (TemplateException e) {
                        throw new IOException(e);
                    }
                }
            };
            response.setEntity(rep);
            return true;
        }
    }
    return false;
}

Example 97 with Representation

use of org.restlet.representation.Representation in project qi4j-sdk by Qi4j.

the class ValueDescriptorResponseWriter method writeResponse.

@Override
public boolean writeResponse(final Object result, final Response response) throws ResourceException {
    if (result instanceof ValueDescriptor) {
        MediaType type = getVariant(response.getRequest(), ENGLISH, supportedMediaTypes).getMediaType();
        if (MediaType.APPLICATION_JSON.equals(type)) {
            JSONObject json = new JSONObject();
            ValueDescriptor vd = (ValueDescriptor) result;
            try {
                for (PropertyDescriptor propertyDescriptor : vd.state().properties()) {
                    Object o = propertyDescriptor.initialValue(module);
                    if (o == null) {
                        json.put(propertyDescriptor.qualifiedName().name(), JSONObject.NULL);
                    } else {
                        json.put(propertyDescriptor.qualifiedName().name(), o.toString());
                    }
                }
            } catch (JSONException e) {
                throw new ResourceException(e);
            }
            StringRepresentation representation = new StringRepresentation(json.toString(), MediaType.APPLICATION_JSON);
            response.setEntity(representation);
            return true;
        } else if (MediaType.TEXT_HTML.equals(type)) {
            Representation rep = new WriterRepresentation(MediaType.TEXT_HTML) {

                @Override
                public void write(Writer writer) throws IOException {
                    Map<String, Object> context = new HashMap<String, Object>();
                    context.put("request", response.getRequest());
                    context.put("response", response);
                    context.put("result", result);
                    try {
                        cfg.getTemplate("form.htm").process(context, writer);
                    } catch (TemplateException e) {
                        throw new IOException(e);
                    }
                }
            };
            response.setEntity(rep);
            return true;
        }
    }
    return false;
}

Example 98 with Representation

use of org.restlet.representation.Representation in project qi4j-sdk by Qi4j.

the class EntitiesResource method representHtml.

private Representation representHtml() throws ResourceException {
    try {
        final Iterable<EntityReference> query = entityFinder.findEntities(EntityComposite.class, null, null, null, null, Collections.<String, Object>emptyMap());
        Representation representation = new WriterRepresentation(MediaType.TEXT_HTML) {

            @Override
            public void write(Writer buf) throws IOException {
                PrintWriter out = new PrintWriter(buf);
                out.println("<html><head><title>All entities</title></head><body><h1>All entities</h1><ul>");
                for (EntityReference entity : query) {
                    out.println("<li><a href=\"" + getRequest().getResourceRef().clone().addSegment(entity.identity() + ".html") + "\">" + entity.identity() + "</a></li>");
                }
                out.println("</ul></body></html>");
            }
        };
        representation.setCharacterSet(CharacterSet.UTF_8);
        return representation;
    } catch (EntityFinderException e) {
        throw new ResourceException(e);
    }
}

Example 99 with Representation

use of org.restlet.representation.Representation in project qi4j-sdk by Qi4j.

the class ContextRestlet method handle.

@Override
public void handle(Request request, Response response) {
    super.handle(request, response);
    MDC.put("url", request.getResourceRef().toString());
    try {
        int tries = 0;
        // TODO Make this number configurable
        while (tries < 10) {
            tries++;
            // Root of the call
            Reference ref = request.getResourceRef();
            List<String> segments = ref.getScheme().equals("riap") ? ref.getRelativeRef(new Reference("riap://application/")).getSegments() : ref.getRelativeRef().getSegments();
            // Handle conversion of verbs into standard interactions
            if (segments.get(segments.size() - 1).equals("")) {
                if (request.getMethod().equals(Method.DELETE)) {
                    // Translate DELETE into command "delete"
                    segments.set(segments.size() - 1, "delete");
                } else if (request.getMethod().equals(Method.PUT)) {
                    // Translate PUT into command "update"
                    segments.set(segments.size() - 1, "update");
                }
            }
            request.getAttributes().put("segments", segments);
            request.getAttributes().put("template", new StringBuilder("/rest/"));
            Usecase usecase = UsecaseBuilder.buildUsecase(getUsecaseName(request)).withMetaInfo(request.getMethod().isSafe() ? CacheOptions.ALWAYS : CacheOptions.NEVER).newUsecase();
            UnitOfWork uow = module.newUnitOfWork(usecase);
            ObjectSelection.newSelection();
            try {
                // Start handling the build-up for the context
                Uniform resource = createRoot(request, response);
                resource.handle(request, response);
                if (response.getEntity() != null) {
                    if (response.getEntity().getModificationDate() == null) {
                        ResourceValidity validity = (ResourceValidity) Request.getCurrent().getAttributes().get(ContextResource.RESOURCE_VALIDITY);
                        if (validity != null) {
                            validity.updateResponse(response);
                        }
                    }
                    // Check if characterset is set
                    if (response.getEntity().getCharacterSet() == null) {
                        response.getEntity().setCharacterSet(CharacterSet.UTF_8);
                    }
                    // Check if language is set
                    if (response.getEntity().getLanguages().isEmpty()) {
                        response.getEntity().getLanguages().add(Language.ENGLISH);
                    }
                    uow.discard();
                } else {
                    // Check if last modified and tag is set
                    ResourceValidity validity = null;
                    try {
                        validity = ObjectSelection.type(ResourceValidity.class);
                    } catch (IllegalArgumentException e) {
                    // Ignore
                    }
                    uow.complete();
                    Object result = commandResult.getResult();
                    if (result != null) {
                        if (result instanceof Representation) {
                            response.setEntity((Representation) result);
                        } else {
                            if (!responseWriter.writeResponse(result, response)) {
                                throw new ResourceException(Status.SERVER_ERROR_INTERNAL, "Could not write result of type " + result.getClass().getName());
                            }
                        }
                        if (response.getEntity() != null) {
                            // Check if characterset is set
                            if (response.getEntity().getCharacterSet() == null) {
                                response.getEntity().setCharacterSet(CharacterSet.UTF_8);
                            }
                            // Check if language is set
                            if (response.getEntity().getLanguages().isEmpty()) {
                                response.getEntity().getLanguages().add(Language.ENGLISH);
                            }
                            // Check if last modified and tag should be set
                            if (validity != null) {
                                UnitOfWork lastModifiedUoW = module.newUnitOfWork();
                                try {
                                    validity.updateEntity(lastModifiedUoW);
                                    validity.updateResponse(response);
                                } finally {
                                    lastModifiedUoW.discard();
                                }
                            }
                        }
                    }
                    return;
                }
                return;
            } catch (ConcurrentEntityModificationException ex) {
                uow.discard();
                // Try again
                ObjectSelection.newSelection();
            } catch (Throwable e) {
                uow.discard();
                handleException(response, e);
                return;
            }
        }
    // Try again
    } finally {
        MDC.clear();
    }
}

Example 100 with Representation

use of org.restlet.representation.Representation in project qi4j-sdk by Qi4j.

the class FormResponseWriter method writeResponse.

@Override
public boolean writeResponse(final Object result, final Response response) throws ResourceException {
    if (result instanceof Form) {
        MediaType type = getVariant(response.getRequest(), ENGLISH, supportedMediaTypes).getMediaType();
        if (MediaType.APPLICATION_JSON.equals(type)) {
            JSONObject json = new JSONObject();
            Form form = (Form) result;
            try {
                for (Parameter parameter : form) {
                    String value = parameter.getValue();
                    if (value == null) {
                        json.put(parameter.getName(), JSONObject.NULL);
                    } else {
                        json.put(parameter.getName(), value);
                    }
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
            StringRepresentation representation = new StringRepresentation(json.toString(), MediaType.APPLICATION_JSON);
            response.setEntity(representation);
            return true;
        } else if (MediaType.TEXT_HTML.equals(type)) {
            Representation rep = new WriterRepresentation(MediaType.TEXT_HTML) {

                @Override
                public void write(Writer writer) throws IOException {
                    Map<String, Object> root = new HashMap<String, Object>();
                    root.put("request", response.getRequest());
                    root.put("response", response);
                    root.put("result", result);
                    try {
                        Template formHtmlTemplate = cfg.getTemplate("form.htm");
                        formHtmlTemplate.process(root, writer);
                    } catch (TemplateException e) {
                        throw new IOException(e);
                    }
                }
            };
            response.setEntity(rep);
            return true;
        }
    }
    return false;
}