Examples with Reference org.restlet.data.Reference used on opensource projects

Example 41 with Reference

use of org.restlet.data.Reference in project qi4j-sdk by Qi4j.

the class DomainEventSourceResource method handle.

@Override
public void handle(Request request, Response response) {
    long eventCount = source.count();
    long pageSize = 10;
    long startEvent = -1;
    long endEvent = -1;
    long limit = pageSize;
    final List<UnitOfWorkDomainEventsValue> eventsValues = new ArrayList<UnitOfWorkDomainEventsValue>();
    final Feed feed = new Feed();
    feed.setBaseReference(request.getResourceRef().getParentRef());
    List<Link> links = feed.getLinks();
    String remainingPart = request.getResourceRef().getRemainingPart();
    if (remainingPart.equals("/")) {
        // Current set - always contains the last "pageSize" events
        startEvent = Math.max(0, eventCount - pageSize - 1);
        feed.setTitle(new Text("Current set"));
        if (startEvent > 0) {
            long previousStart = Math.max(0, startEvent - pageSize);
            long previousEnd = startEvent - 1;
            Link link = new Link(new Reference(previousStart + "," + previousEnd), new Relation("previous"), MediaType.APPLICATION_ATOM);
            link.setTitle("Previous page");
            links.add(link);
        }
    } else {
        // Archive
        String[] indices = remainingPart.substring(1).split(",");
        if (indices.length == 1) {
            // Working set
            startEvent = Long.parseLong(indices[0]);
            endEvent = startEvent + pageSize - 1;
            limit = pageSize;
            feed.setTitle(new Text("Working set"));
        } else if (indices.length == 2) {
            feed.setTitle(new Text("Archive page"));
            startEvent = Long.parseLong(indices[0]);
            endEvent = Long.parseLong(indices[1]);
            limit = 1 + endEvent - startEvent;
        } else
            throw new ResourceException(Status.CLIENT_ERROR_NOT_FOUND);
        if (startEvent > 0) {
            long previousStart = Math.max(0, startEvent - pageSize);
            long previousEnd = startEvent - 1;
            Link link = new Link(new Reference(previousStart + "," + previousEnd), new Relation("previous"), MediaType.APPLICATION_ATOM);
            link.setTitle("Previous page");
            links.add(link);
        }
        long nextStart = endEvent + 1;
        long nextEnd = nextStart + pageSize - 1;
        if (nextStart < eventCount)
            if (nextEnd >= eventCount) {
                Link next = new Link(new Reference(nextStart + ""), new Relation("next"), MediaType.APPLICATION_ATOM);
                next.setTitle("Working set");
                links.add(next);
            } else {
                Link next = new Link(new Reference(nextStart + "," + nextEnd), new Relation("next"), MediaType.APPLICATION_ATOM);
                next.setTitle("Next page");
                links.add(next);
            }
    }
    try {
        source.events(startEvent, limit).transferTo(Outputs.collection(eventsValues));
    } catch (Throwable throwable) {
        throw new ResourceException(Status.SERVER_ERROR_INTERNAL, throwable);
    }
    Link last = new Link(new Reference("0," + (pageSize - 1)), new Relation("last"), MediaType.APPLICATION_ATOM);
    last.setTitle("Last archive page");
    links.add(last);
    Link first = new Link(new Reference("."), new Relation("first"), MediaType.APPLICATION_ATOM);
    first.setTitle("Current set");
    links.add(first);
    /*
        if (previousPage != -1)
        {
            Link link = new Link( new Reference( ""+previousPage ), new Relation( "prev-archive" ), MediaType.APPLICATION_ATOM );
            link.setTitle( "Previous archive page" );
            links.add( link );
        }
        if (nextPage != -1)
        {
            Link link = new Link( new Reference( "" + nextPage ), new Relation( "next-archive" ), MediaType.APPLICATION_ATOM );
            link.setTitle( "Next archive page" );
            links.add( link );
        }
        else if (startEvent != workingSetOffset)
        {
            Link next = new Link( new Reference( "" ), new Relation( "next" ), MediaType.APPLICATION_ATOM );
            next.setTitle( "Next page" );
            links.add( next );
        }
*/
    Date lastModified = null;
    for (UnitOfWorkDomainEventsValue eventsValue : eventsValues) {
        Entry entry = new Entry();
        entry.setTitle(new Text(eventsValue.usecase().get() + "(" + eventsValue.user().get() + ")"));
        entry.setPublished(new Date(eventsValue.timestamp().get()));
        entry.setModificationDate(lastModified = new Date(eventsValue.timestamp().get()));
        entry.setId(Long.toString(startEvent + 1));
        startEvent++;
        Content content = new Content();
        content.setInlineContent(new StringRepresentation(eventsValue.toString(), MediaType.APPLICATION_JSON));
        entry.setContent(content);
        feed.getEntries().add(entry);
    }
    feed.setModificationDate(lastModified);
    MediaType mediaType = request.getClientInfo().getPreferredMediaType(Iterables.toList(iterable(MediaType.TEXT_HTML, MediaType.APPLICATION_ATOM)));
    if (MediaType.APPLICATION_ATOM.equals(mediaType)) {
        WriterRepresentation representation = new WriterRepresentation(MediaType.APPLICATION_ATOM) {

            @Override
            public void write(final Writer writer) throws IOException {
                feed.write(writer);
            }
        };
        representation.setCharacterSet(CharacterSet.UTF_8);
        response.setEntity(representation);
    } else {
        WriterRepresentation representation = new WriterRepresentation(MediaType.TEXT_HTML) {

            @Override
            public void write(Writer writer) throws IOException {
                writer.append("<html><head><title>Events</title></head><body>");
                for (Link link : feed.getLinks()) {
                    writer.append("<a href=\"").append(link.getHref().getPath()).append("\">");
                    writer.append(link.getTitle());
                    writer.append("</a><br/>");
                }
                writer.append("<ol>");
                for (Entry entry : feed.getEntries()) {
                    writer.append("<li>").append(entry.getTitle().toString()).append("</li>");
                }
                writer.append("</ol></body>");
            }
        };
        representation.setCharacterSet(CharacterSet.UTF_8);
        response.setEntity(representation);
    }
/*
        } else
        {
            throw new ResourceException( Status.CLIENT_ERROR_UNSUPPORTED_MEDIA_TYPE );
        }
*/
}

Example 42 with Reference

use of org.restlet.data.Reference in project qi4j-sdk by Qi4j.

the class ContextResourceClient method newClient.

public synchronized ContextResourceClient newClient(String relativePath) {
    if (relativePath.startsWith("http://")) {
        return contextResourceFactory.newClient(new Reference(relativePath));
    }
    Reference reference = this.reference.clone();
    if (relativePath.startsWith("/")) {
        reference.setPath(relativePath);
    } else {
        reference.setPath(reference.getPath() + relativePath);
        reference = reference.normalize();
    }
    return contextResourceFactory.newClient(reference);
}

Example 43 with Reference

use of org.restlet.data.Reference in project qi4j-sdk by Qi4j.

the class ContextResourceClient method command.

// Commands
HandlerCommand command(Link link, Object commandRequest, ResponseHandler handler, ResponseHandler processingErrorHandler) {
    if (handler == null)
        handler = commandHandlers.get(link.rel().get());
    if (processingErrorHandler == null)
        processingErrorHandler = processingErrorHandlers.get(link.rel().get());
    // Check if we should do POST or PUT
    Method method;
    if (LinksUtil.withClass("idempotent").satisfiedBy(link)) {
        method = Method.PUT;
    } else {
        method = Method.POST;
    }
    Reference ref = new Reference(reference.toUri().toString() + link.href().get());
    return invokeCommand(ref, method, commandRequest, handler, processingErrorHandler);
}

Example 44 with Reference

use of org.restlet.data.Reference in project qi4j-sdk by Qi4j.

the class ContextResourceClient method delete.

// Delete
public HandlerCommand delete(ResponseHandler responseHandler, ResponseHandler processingErrorHandler) throws ResourceException {
    if (responseHandler == null)
        responseHandler = deleteHandler;
    Request request = new Request(Method.DELETE, new Reference(reference.toUri()).toString());
    contextResourceFactory.updateCommandRequest(request);
    int tries = 3;
    while (true) {
        Response response = new Response(request);
        try {
            contextResourceFactory.getClient().handle(request, response);
            if (!response.getStatus().isSuccess()) {
                return errorHandler.handleResponse(response, this);
            } else {
                // Reset modification date
                contextResourceFactory.updateCache(response);
                return responseHandler.handleResponse(response, this);
            }
        } catch (ResourceException e) {
            if (e.getStatus().equals(Status.CONNECTOR_ERROR_COMMUNICATION) || e.getStatus().equals(Status.CONNECTOR_ERROR_CONNECTION)) {
                if (tries == 0) {
                    // Give up
                    throw e;
                } else {
                    // Try again
                    tries--;
                    continue;
                }
            } else {
                // Abort
                throw e;
            }
        } finally {
            try {
                response.getEntity().exhaust();
            } catch (Throwable e) {
            // Ignore
            }
        }
    }
}

Example 45 with Reference

use of org.restlet.data.Reference in project qi4j-sdk by Qi4j.

the class ContextResource method handleQuery.

private void handleQuery(String segment) {
    Request request = Request.getCurrent();
    Response response = Response.getCurrent();
    // Query
    // Try to locate either the query method or command method that should be used
    Method queryMethod = resourceMethodQueries.get(segment);
    if (queryMethod == null) {
        queryMethod = resourceMethodCommands.get(segment);
    }
    if (queryMethod == null) {
        // Not found as interaction, try SubResource
        Method resourceMethod = subResources.get(segment);
        if (resourceMethod != null && resourceMethod.getAnnotation(SubResource.class) != null) {
            // Found it! Redirect to it
            response.setStatus(Status.REDIRECTION_FOUND);
            response.setLocationRef(new Reference(request.getResourceRef().toString() + "/").toString());
            return;
        } else {
            // 404
            throw new ResourceException(Status.CLIENT_ERROR_NOT_FOUND);
        }
    }
    // Check if this is a request to show the form for this interaction
    if ((request.getMethod().isSafe() && queryMethod.getParameterTypes().length != 0 && request.getResourceRef().getQuery() == null) || (!request.getMethod().isSafe() && queryMethod.getParameterTypes().length != 0 && !(request.getEntity().isAvailable() || request.getResourceRef().getQuery() != null || queryMethod.getParameterTypes()[0].equals(Response.class)))) {
        // Show form
        try {
            // Tell client to try again
            response.setStatus(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY);
            response.getAllowedMethods().add(org.restlet.data.Method.GET);
            response.getAllowedMethods().add(org.restlet.data.Method.POST);
            result(formForMethod(queryMethod));
        } catch (Exception e) {
            handleException(response, e);
        }
    } else {
        // Check timestamps
        ResourceValidity validity = (ResourceValidity) request.getAttributes().get(RESOURCE_VALIDITY);
        if (validity != null) {
            validity.checkRequest();
        }
        // Check method constraints
        if (!constraints.isValid(queryMethod, current(), module)) {
            throw new ResourceException(Status.CLIENT_ERROR_NOT_FOUND);
        }
        try {
            // Create argument
            Object[] arguments;
            if (queryMethod.getParameterTypes().length > 0) {
                try {
                    arguments = requestReader.readRequest(Request.getCurrent(), queryMethod);
                    if (arguments == null) {
                        // Show form
                        result(formForMethod(queryMethod));
                        return;
                    }
                } catch (IllegalArgumentException e) {
                    // Still missing some values - show form
                    result(formForMethod(queryMethod));
                    return;
                }
            } else {
                // No arguments to this query
                arguments = new Object[0];
            }
            // Invoke method
            Request.getCurrent().getAttributes().put(ARGUMENTS, arguments);
            Object result = queryMethod.invoke(this, arguments);
            if (result != null) {
                if (result instanceof Representation) {
                    response.setEntity((Representation) result);
                } else {
                    result(convert(result));
                }
            }
        } catch (Throwable e) {
            handleException(response, e);
        }
    }
}