Examples with ResourceException org.restlet.resource.ResourceException used on opensource projects

Example 31 with ResourceException

use of org.restlet.resource.ResourceException 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);
    }
}

Example 32 with ResourceException

use of org.restlet.resource.ResourceException in project qi4j-sdk by Qi4j.

the class EntityResource method post.

@Override
public Representation post(Representation entityRepresentation, Variant variant) throws ResourceException {
    Usecase usecase = UsecaseBuilder.newUsecase("Update entity");
    EntityStoreUnitOfWork unitOfWork = entityStore.newUnitOfWork(usecase, module, System.currentTimeMillis());
    EntityState entity = getEntityState(unitOfWork);
    Form form = new Form(entityRepresentation);
    try {
        final EntityDescriptor descriptor = entity.entityDescriptor();
        // Parse JSON into properties
        for (PropertyDescriptor persistentProperty : descriptor.state().properties()) {
            if (!persistentProperty.isImmutable()) {
                String formValue = form.getFirstValue(persistentProperty.qualifiedName().name(), null);
                if (formValue == null) {
                    entity.setPropertyValue(persistentProperty.qualifiedName(), null);
                } else {
                    entity.setPropertyValue(persistentProperty.qualifiedName(), valueSerialization.deserialize(persistentProperty.valueType(), formValue));
                }
            }
        }
        for (AssociationDescriptor associationType : descriptor.state().associations()) {
            String newStringAssociation = form.getFirstValue(associationType.qualifiedName().name());
            if (newStringAssociation == null || newStringAssociation.isEmpty()) {
                entity.setAssociationValue(associationType.qualifiedName(), null);
            } else {
                entity.setAssociationValue(associationType.qualifiedName(), EntityReference.parseEntityReference(newStringAssociation));
            }
        }
        for (AssociationDescriptor associationType : descriptor.state().manyAssociations()) {
            String newStringAssociation = form.getFirstValue(associationType.qualifiedName().name());
            ManyAssociationState manyAssociation = entity.manyAssociationValueOf(associationType.qualifiedName());
            if (newStringAssociation == null) {
                // Remove "left-overs"
                for (EntityReference entityReference : manyAssociation) {
                    manyAssociation.remove(entityReference);
                }
                continue;
            }
            BufferedReader bufferedReader = new BufferedReader(new StringReader(newStringAssociation));
            String identity;
            try {
                // Synchronize old and new association
                int index = 0;
                while ((identity = bufferedReader.readLine()) != null) {
                    EntityReference reference = new EntityReference(identity);
                    if (manyAssociation.count() < index && manyAssociation.get(index).equals(reference)) {
                        continue;
                    }
                    try {
                        unitOfWork.entityStateOf(reference);
                        manyAssociation.remove(reference);
                        manyAssociation.add(index++, reference);
                    } catch (EntityNotFoundException e) {
                    // Ignore this entity - doesn't exist
                    }
                }
                // Remove "left-overs"
                while (manyAssociation.count() > index) {
                    manyAssociation.remove(manyAssociation.get(index));
                }
            } catch (IOException e) {
            // Ignore
            }
        }
        for (AssociationDescriptor associationType : descriptor.state().namedAssociations()) {
            String newStringAssociation = form.getFirstValue(associationType.qualifiedName().name());
            NamedAssociationState namedAssociation = entity.namedAssociationValueOf(associationType.qualifiedName());
            if (newStringAssociation == null) {
                // Remove "left-overs"
                for (String name : namedAssociation) {
                    namedAssociation.remove(name);
                }
                continue;
            }
            Set<String> names = new HashSet<>();
            BufferedReader bufferedReader = new BufferedReader(new StringReader(newStringAssociation));
            String line;
            try {
                while ((line = bufferedReader.readLine()) != null) {
                    String name = line;
                    line = bufferedReader.readLine();
                    if (line == null) {
                        break;
                    }
                    String identity = line;
                    EntityReference reference = new EntityReference(identity);
                    try {
                        unitOfWork.entityStateOf(reference);
                        namedAssociation.remove(name);
                        namedAssociation.put(name, reference);
                        names.add(name);
                    } catch (EntityNotFoundException e) {
                    // Ignore this entity - doesn't exist
                    }
                }
                // Remove "left-overs"
                for (String assocName : Iterables.toList(namedAssociation)) {
                    if (!names.contains(assocName)) {
                        namedAssociation.remove(assocName);
                    }
                }
            } catch (IOException e) {
            // Ignore
            }
        }
    } catch (ValueSerializationException | IllegalArgumentException e) {
        throw new ResourceException(Status.SERVER_ERROR_INTERNAL, e);
    }
    try {
        unitOfWork.applyChanges().commit();
    } catch (ConcurrentEntityStateModificationException e) {
        throw new ResourceException(Status.CLIENT_ERROR_CONFLICT);
    } catch (EntityNotFoundException e) {
        throw new ResourceException(Status.CLIENT_ERROR_GONE);
    }
    getResponse().setStatus(Status.SUCCESS_RESET_CONTENT);
    return new EmptyRepresentation();
}

Example 33 with ResourceException

use of org.restlet.resource.ResourceException in project qi4j-sdk by Qi4j.

the class EntityResource method getEntityState.

private EntityState getEntityState(EntityStoreUnitOfWork unitOfWork) throws ResourceException {
    EntityState entityState;
    try {
        EntityReference entityReference = EntityReference.parseEntityReference(identity);
        entityState = unitOfWork.entityStateOf(entityReference);
    } catch (EntityNotFoundException e) {
        throw new ResourceException(Status.CLIENT_ERROR_NOT_FOUND);
    }
    return entityState;
}

Example 34 with ResourceException

use of org.restlet.resource.ResourceException in project qi4j-sdk by Qi4j.

the class ContextResource method handleCommand.

private void handleCommand(String segment) {
    Request request = Request.getCurrent();
    Response response = Response.getCurrent();
    // Check if this is a request to show the form for this command
    Method interactionMethod = resourceMethodCommands.get(segment);
    if (shouldShowCommandForm(interactionMethod)) {
        // Show form
        // TODO This should check if method is idempotent
        response.getAllowedMethods().add(org.restlet.data.Method.POST);
        try {
            // Check if there is a query with this name - if so invoke it
            Method queryMethod = resourceMethodQueries.get(segment);
            if (queryMethod != null) {
                result(queryMethod.invoke(this));
            } else {
                request.setMethod(org.restlet.data.Method.POST);
                response.setStatus(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY);
                result(formForMethod(interactionMethod));
            }
        } 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(interactionMethod, current(), module)) {
            throw new ResourceException(Status.CLIENT_ERROR_NOT_FOUND);
        }
        // Create argument
        Object[] arguments = requestReader.readRequest(Request.getCurrent(), interactionMethod);
        Request.getCurrent().getAttributes().put(ARGUMENTS, arguments);
        // Invoke method
        try {
            Object result = interactionMethod.invoke(this, arguments);
            if (result != null) {
                if (result instanceof Representation) {
                    response.setEntity((Representation) result);
                } else {
                    result(convert(result));
                }
            }
        } catch (Throwable e) {
            handleException(response, e);
        }
    }
}

Example 35 with ResourceException

use of org.restlet.resource.ResourceException in project qi4j-sdk by Qi4j.

the class ContextResource method handleException.

private void handleException(Response response, Throwable ex) {
    while (ex instanceof InvocationTargetException) {
        ex = ex.getCause();
    }
    try {
        throw ex;
    } catch (ResourceException e) {
        // IAE (or subclasses) are considered client faults
        response.setEntity(new StringRepresentation(e.getMessage()));
        response.setStatus(e.getStatus());
    } catch (ConstraintViolationException e) {
        try {
            ConstraintViolationMessages cvm = new ConstraintViolationMessages();
            // CVE are considered client faults
            String messages = "";
            Locale locale = ObjectSelection.type(Locale.class);
            for (ConstraintViolation constraintViolation : e.constraintViolations()) {
                if (!messages.isEmpty()) {
                    messages += "\n";
                }
                messages += cvm.getMessage(constraintViolation, locale);
            }
            response.setEntity(new StringRepresentation(messages));
            response.setStatus(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY);
        } catch (Exception e1) {
            response.setEntity(new StringRepresentation(e.getMessage()));
            response.setStatus(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY);
        }
    } catch (IllegalArgumentException e) {
        // IAE (or subclasses) are considered client faults
        response.setEntity(new StringRepresentation(e.getMessage()));
        response.setStatus(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY);
    } catch (RuntimeException e) {
        // RuntimeExceptions are considered server faults
        LoggerFactory.getLogger(getClass()).warn("Exception thrown during processing", e);
        response.setEntity(new StringRepresentation(e.getMessage()));
        response.setStatus(Status.SERVER_ERROR_INTERNAL);
    } catch (Exception e) {
        // Checked exceptions are considered client faults
        String s = e.getMessage();
        if (s == null) {
            s = e.getClass().getSimpleName();
        }
        response.setEntity(new StringRepresentation(s));
        response.setStatus(Status.CLIENT_ERROR_UNPROCESSABLE_ENTITY);
    } catch (Throwable e) {
        // Anything else are considered server faults
        LoggerFactory.getLogger(getClass()).error("Exception thrown during processing", e);
        response.setEntity(new StringRepresentation(e.getMessage()));
        response.setStatus(Status.SERVER_ERROR_INTERNAL);
    }
}