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

Example 1 with WriterRepresentation

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

the class ValueCompositeRequestWriter method writeRequest.

@Override
public boolean writeRequest(Object requestObject, Request request) throws ResourceException {
    if (requestObject instanceof ValueComposite) {
        // Value as parameter
        final ValueComposite valueObject = (ValueComposite) requestObject;
        if (request.getMethod().equals(Method.GET)) {
            StateHolder holder = spi.stateOf(valueObject);
            final ValueDescriptor descriptor = spi.valueDescriptorFor(valueObject);
            final Reference ref = request.getResourceRef();
            ref.setQuery(null);
            try {
                for (PropertyDescriptor propertyDescriptor : descriptor.state().properties()) {
                    Object value = holder.propertyFor(propertyDescriptor.accessor()).get();
                    String param;
                    if (value == null) {
                        param = null;
                    } else {
                        param = valueSerializer.serialize(value);
                    }
                    ref.addQueryParameter(propertyDescriptor.qualifiedName().name(), param);
                }
            } catch (ValueSerializationException e) {
                throw new ResourceException(e);
            }
        } else {
            request.setEntity(new WriterRepresentation(MediaType.APPLICATION_JSON) {

                @Override
                public void write(Writer writer) throws IOException {
                    setCharacterSet(CharacterSet.UTF_8);
                    valueSerializer.serialize(valueObject, new WriterOutputStream(writer));
                }
            });
        }
        return true;
    }
    return false;
}

Example 2 with WriterRepresentation

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

the class ValueCompositeResponseWriter method writeResponse.

@Override
public boolean writeResponse(final Object result, final Response response) throws ResourceException {
    if (result instanceof ValueComposite) {
        MediaType type = getVariant(response.getRequest(), ENGLISH, supportedMediaTypes).getMediaType();
        if (MediaType.APPLICATION_JSON.equals(type)) {
            StringRepresentation representation = new StringRepresentation(valueSerializer.serialize(result), 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 {
                    // Look for type specific template
                    Template template;
                    try {
                        template = cfg.getTemplate("/rest/template/" + result.getClass().getInterfaces()[0].getSimpleName() + ".htm");
                    } catch (Exception e) {
                        // Use default
                        template = cfg.getTemplate("value.htm");
                    }
                    Map<String, Object> context = new HashMap<String, Object>();
                    context.put("request", response.getRequest());
                    context.put("response", response);
                    context.put("result", result);
                    context.put("util", this);
                    try {
                        template.process(context, writer);
                    } catch (TemplateException e) {
                        throw new IOException(e);
                    }
                }

                public boolean isSequence(Object obj) {
                    return obj instanceof Collection;
                }
            };
            response.setEntity(rep);
            return true;
        }
    }
    return false;
}

Example 3 with WriterRepresentation

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

the class EntityResource method representHtml.

private Representation representHtml(final EntityState entity) {
    return new WriterRepresentation(MediaType.TEXT_HTML) {

        @Override
        public void write(Writer writer) throws IOException {
            PrintWriter out = new PrintWriter(writer);
            out.println("<html><head><title>" + entity.identity() + "</title>" + "<link rel=\"alternate\" type=\"application/rdf+xml\" " + "href=\"" + entity.identity() + ".rdf\"/></head><body>");
            out.println("<h1>" + entity.identity() + "</h1>");
            out.println("<form method=\"post\" action=\"" + getRequest().getResourceRef().getPath() + "\">\n");
            out.println("<fieldset><legend>Properties</legend>\n<table>");
            final EntityDescriptor descriptor = entity.entityDescriptor();
            for (PropertyDescriptor persistentProperty : descriptor.state().properties()) {
                Object value = entity.propertyValueOf(persistentProperty.qualifiedName());
                out.println("<tr><td>" + "<label for=\"" + persistentProperty.qualifiedName() + "\" >" + persistentProperty.qualifiedName().name() + "</label></td>\n" + "<td><input " + "size=\"80\" " + "type=\"text\" " + (persistentProperty.isImmutable() ? "readonly=\"true\" " : "") + "name=\"" + persistentProperty.qualifiedName() + "\" " + "value=\"" + (value == null ? "" : valueSerialization.serialize(value)) + "\"/></td></tr>");
            }
            out.println("</table></fieldset>\n");
            out.println("<fieldset><legend>Associations</legend>\n<table>");
            for (AssociationDescriptor associationType : descriptor.state().associations()) {
                Object value = entity.associationValueOf(associationType.qualifiedName());
                if (value == null) {
                    value = "";
                }
                out.println("<tr><td>" + "<label for=\"" + associationType.qualifiedName() + "\" >" + associationType.qualifiedName().name() + "</label></td>\n" + "<td><input " + "type=\"text\" " + "size=\"80\" " + "name=\"" + associationType.qualifiedName() + "\" " + "value=\"" + value + "\"/></td></tr>");
            }
            out.println("</table></fieldset>\n");
            out.println("<fieldset><legend>ManyAssociations</legend>\n<table>");
            for (AssociationDescriptor associationType : descriptor.state().manyAssociations()) {
                ManyAssociationState identities = entity.manyAssociationValueOf(associationType.qualifiedName());
                String value = "";
                for (EntityReference identity : identities) {
                    value += identity.identity() + "\n";
                }
                out.println("<tr><td>" + "<label for=\"" + associationType.qualifiedName() + "\" >" + associationType.qualifiedName().name() + "</label></td>\n" + "<td><textarea " + "rows=\"10\" " + "cols=\"80\" " + "name=\"" + associationType.qualifiedName() + "\" >" + value + "</textarea></td></tr>");
            }
            out.println("</table></fieldset>\n");
            out.println("<fieldset><legend>NamedAssociations</legend>\n<table>");
            for (AssociationDescriptor associationType : descriptor.state().namedAssociations()) {
                NamedAssociationState identities = entity.namedAssociationValueOf(associationType.qualifiedName());
                String value = "";
                for (String name : identities) {
                    value += name + "\n" + identities.get(name).identity() + "\n";
                }
                out.println("<tr><td>" + "<label for=\"" + associationType.qualifiedName() + "\" >" + associationType.qualifiedName().name() + "</label></td>\n" + "<td><textarea " + "rows=\"10\" " + "cols=\"80\" " + "name=\"" + associationType.qualifiedName() + "\" >" + value + "</textarea></td></tr>");
            }
            out.println("</table></fieldset>\n");
            out.println("<input type=\"submit\" value=\"Update\"/></form>\n");
            out.println("</body></html>\n");
        }
    };
}

Example 4 with WriterRepresentation

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

the class EntityResource method representRdfXml.

private Representation representRdfXml(final EntityState entity) throws ResourceException {
    Representation representation = new WriterRepresentation(MediaType.APPLICATION_RDF_XML) {

        @Override
        public void write(Writer writer) throws IOException {
            try {
                Iterable<Statement> statements = entitySerializer.serialize(entity);
                new RdfXmlSerializer().serialize(statements, writer);
            } catch (RDFHandlerException e) {
                throw new IOException(e);
            }
        }
    };
    representation.setCharacterSet(CharacterSet.UTF_8);
    return representation;
}

Example 5 with WriterRepresentation

use of org.restlet.representation.WriterRepresentation 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 );
        }
*/
}