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

Example 6 with WriterRepresentation

use of org.restlet.representation.WriterRepresentation 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 7 with WriterRepresentation

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

the class ResourceTemplateResponseWriter method writeResponse.

@Override
public boolean writeResponse(final Object result, final Response response) throws ResourceException {
    MediaType type = getVariant(response.getRequest(), ENGLISH, supportedMediaTypes).getMediaType();
    if (type != null) {
        // Try to find template for this specific resource
        StringBuilder templateBuilder = (StringBuilder) response.getRequest().getAttributes().get("template");
        String templateName = templateBuilder.toString();
        if (result instanceof ValueDescriptor) {
            templateName += "_form";
        }
        final String extension = metadataService.getExtension(type);
        templateName += "." + extension;
        // Have we failed on this one before, then don't try again
        if (skip.contains(templateName)) {
            return false;
        }
        try {
            final Template template = cfg.getTemplate(templateName);
            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 {
                        template.process(context, writer);
                    } catch (TemplateException e) {
                        throw new IOException(e);
                    }
                }
            };
            response.setEntity(rep);
            return true;
        } catch (Exception e) {
            skip.add(templateName);
        // Ignore
        }
    }
    return false;
}

Example 8 with WriterRepresentation

use of org.restlet.representation.WriterRepresentation 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 9 with WriterRepresentation

use of org.restlet.representation.WriterRepresentation 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 10 with WriterRepresentation

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

the class EntitiesResource method representRdf.

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

            @Override
            public void write(Writer writer) throws IOException {
                PrintWriter out = new PrintWriter(writer);
                out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" + "<rdf:RDF\n" + "\txmlns=\"urn:qi4j:\"\n" + "\txmlns:qi4j=\"http://www.qi4j.org/rdf/model/1.0/\"\n" + "\txmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n" + "\txmlns:rdfs=\"http://www.w3.org/2000/01/rdf-schema#\">");
                for (EntityReference qualifiedIdentity : query) {
                    out.println("<qi4j:entity rdf:about=\"" + getRequest().getResourceRef().getPath() + "/" + qualifiedIdentity.identity() + ".rdf\"/>");
                }
                out.println("</rdf:RDF>");
            }
        };
        representation.setCharacterSet(CharacterSet.UTF_8);
        return representation;
    } catch (EntityFinderException e) {
        throw new ResourceException(Status.SERVER_ERROR_INTERNAL, e);
    }
}