org.apache.olingo.commons.api.format.ContentType#parse

Source File: ClientEntitySetIteratorTest.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void testGetEntitySetIteratorWithInnerNavArray() throws IOException, URISyntaxException {
    String str = "{\"@odata.context\":\"$metadata#Cubes(Name)\","
        + "\"value\":[{\"@odata.etag\":\"W/\\\"c24af675e00a3f95ef63f223fb9c2cc8d6455459\\\"\","
        + "\"Name\":\"}Capabilities\","
        + "\"NavProp\":[{\"PropertyInt1\":1},{\"PropertyInt2\":2}]},"
        + "{\"@odata.etag\":\"W/\\\"c24af675e00a3f95ef63f223fb9c2cc8d6455459\\\"\",\"Name\":\"ABC()}\","
        + "\"NavProp\":[{\"PropertyInt1\":3}]}]}";
    
    InputStream stream = new ByteArrayInputStream(str.getBytes());
    ODataClient oDataClient = ODataClientFactory.getClient();
    ClientEntitySetIterator<ClientEntitySet, ClientEntity> entitySetIterator = 
        new ClientEntitySetIterator<ClientEntitySet, ClientEntity>(
        oDataClient, stream, ContentType.parse(ContentType.JSON.toString()));

    ArrayList<ClientEntity> entities = new ArrayList<ClientEntity>();
    while (entitySetIterator.hasNext()) {
        ClientEntity next = entitySetIterator.next();
        entities.add(next);
    }

    Assert.assertEquals(2, entities.size());
    Assert.assertNotNull(entities.get(0).getProperty("NavProp"));
    Assert.assertTrue(entities.get(0).getProperty("NavProp").hasCollectionValue());
    Assert.assertEquals("}Capabilities", entities.get(0).getProperty("Name").getPrimitiveValue().toString());
}

Source File: AcceptHeaderAcceptCharsetHeaderITCase.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void validAcceptCharsetHeader() throws Exception {
  URL url = new URL(SERVICE_URI + "ESAllPrim");

  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(HttpMethod.GET.name());
  connection.setRequestProperty(HttpHeader.ACCEPT_CHARSET, "utf-8;q=0.1");
  connection.setRequestProperty(HttpHeader.ACCEPT, ContentType.APPLICATION_JSON.toContentTypeString());
  connection.connect();

  assertEquals(HttpStatusCode.OK.getStatusCode(), connection.getResponseCode());
  assertNotNull(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  ContentType contentType = ContentType.parse(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  assertEquals("application", contentType.getType());
  assertEquals("json", contentType.getSubtype());
  assertEquals(3, contentType.getParameters().size());
  assertEquals("0.1", contentType.getParameter("q"));
  assertEquals("minimal", contentType.getParameter("odata.metadata"));
  assertEquals("utf-8", contentType.getParameter("charset"));

  final String content = IOUtils.toString(connection.getInputStream());
  assertNotNull(content);
}

Source File: AcceptHeaderAcceptCharsetHeaderITCase.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void unsupportedAcceptHeaderWithSupportedAcceptCharsetHeader() throws Exception {
  URL url = new URL(SERVICE_URI + "ESAllPrim");

  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(HttpMethod.GET.name());
  connection.setRequestProperty(HttpHeader.ACCEPT_CHARSET, "utf8;q=0.1");
  connection.setRequestProperty(HttpHeader.ACCEPT, "application/json;charset=iso8859-1");
  connection.connect();

  assertEquals(HttpStatusCode.OK.getStatusCode(), connection.getResponseCode());
  assertNotNull(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  ContentType contentType = ContentType.parse(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  assertEquals("application", contentType.getType());
  assertEquals("json", contentType.getSubtype());
  assertEquals(3, contentType.getParameters().size());
  assertEquals("0.1", contentType.getParameter("q"));
  assertEquals("minimal", contentType.getParameter("odata.metadata"));
  assertEquals("utf8", contentType.getParameter("charset"));

  final String content = IOUtils.toString(connection.getInputStream());
  assertNotNull(content);
}

Source File: AcceptHeaderAcceptCharsetHeaderITCase.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void validFormatWithAcceptCharsetHeader() throws Exception {
  URL url = new URL(SERVICE_URI + "ESAllPrim?$format=json");

  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(HttpMethod.GET.name());
  connection.setRequestProperty(HttpHeader.ACCEPT_CHARSET, "utf-8;q=0.1");
  connection.connect();

  assertEquals(HttpStatusCode.OK.getStatusCode(), connection.getResponseCode());
  assertNotNull(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  ContentType contentType = ContentType.parse(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  assertEquals("application", contentType.getType());
  assertEquals("json", contentType.getSubtype());
  assertEquals(3, contentType.getParameters().size());
  assertEquals("0.1", contentType.getParameter("q"));
  assertEquals("minimal", contentType.getParameter("odata.metadata"));
  assertEquals("utf-8", contentType.getParameter("charset"));

  final String content = IOUtils.toString(connection.getInputStream());
  assertNotNull(content);
}

Source File: AcceptHeaderAcceptCharsetHeaderITCase.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void multipleValuesInAcceptCharsetHeader1() throws Exception {
  URL url = new URL(SERVICE_URI + "ESAllPrim");

  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(HttpMethod.GET.name());
  connection.setRequestProperty(HttpHeader.ACCEPT_CHARSET, "utf-8;q=0.1,iso-8859-1,unicode-1-1");
  connection.setRequestProperty(HttpHeader.ACCEPT, "application/json");
  connection.connect();

  assertEquals(HttpStatusCode.OK.getStatusCode(), connection.getResponseCode());
  assertNotNull(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  ContentType contentType = ContentType.parse(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  assertEquals("application", contentType.getType());
  assertEquals("json", contentType.getSubtype());
  assertEquals(3, contentType.getParameters().size());
  assertEquals("minimal", contentType.getParameter("odata.metadata"));
  assertEquals("utf-8", contentType.getParameter("charset"));
  assertEquals("0.1", contentType.getParameter("q"));

  final String content = IOUtils.toString(connection.getInputStream());
  assertNotNull(content);
}

Source File: AcceptHeaderAcceptCharsetHeaderITCase.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void multipleValuesInAcceptCharsetHeader2() throws Exception {
  URL url = new URL(SERVICE_URI + "ESAllPrim"); 

  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(HttpMethod.GET.name());
  connection.setRequestProperty(HttpHeader.ACCEPT_CHARSET, "utf-8;q=0.1,utf-8;q=0.8,utf8");
  connection.setRequestProperty(HttpHeader.ACCEPT, ContentType.APPLICATION_JSON.toContentTypeString());
  connection.connect();

  assertEquals(HttpStatusCode.OK.getStatusCode(), connection.getResponseCode());
  assertNotNull(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  ContentType contentType = ContentType.parse(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  assertEquals("application", contentType.getType());
  assertEquals("json", contentType.getSubtype());
  assertEquals(2, contentType.getParameters().size());
  assertEquals("utf8", contentType.getParameter("charset"));
  assertEquals("minimal", contentType.getParameter("odata.metadata"));
  
  final String content = IOUtils.toString(connection.getInputStream());
  assertNotNull(content);
}

Source File: ClientEntitySetIteratorTest.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void testEntitySetIteratorNextLink() throws IOException, URISyntaxException {
    String str = "{\"@odata.context\":\"$metadata#Cubes(Name)\","
        + "\"@odata.metadataEtag\": \"W/\\\"582997db-15b9-4a23-a8b0-c91bf45b4194\\\"\","
        + "\"@odata.nextLink\":\"http://localhost:8082/odata-server-tecsvc/odata.svc/"
        + "ESServerSidePaging?%24skiptoken=1%2A10\","
        + "\"value\":[{\"PropertyInt16\": 0,\"PropertyString\": \"\"}]}";
    
    InputStream stream = new ByteArrayInputStream(str.getBytes());
    ODataClient oDataClient = ODataClientFactory.getClient();
    ClientEntitySetIterator<ClientEntitySet, ClientEntity> entitySetIterator = 
        new ClientEntitySetIterator<ClientEntitySet, ClientEntity>(
        oDataClient, stream, ContentType.parse(ContentType.JSON.toString()));
    
    ArrayList<ClientEntity> entities = new ArrayList<ClientEntity>();
    while (entitySetIterator.hasNext()) {
        ClientEntity next = entitySetIterator.next();
        entities.add(next);
    }

    Assert.assertEquals(1, entities.size());
    Assert.assertNotNull(entitySetIterator.getNext());
    Assert.assertEquals("http://localhost:8082/odata-server-tecsvc/"
        + "odata.svc/ESServerSidePaging?%24skiptoken=1%2A10", entitySetIterator.getNext().toString());
}

Source File: AcceptHeaderAcceptCharsetHeaderITCase.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void formatWithAcceptCharset() throws Exception {
  URL url = new URL(SERVICE_URI + "ESAllPrim?$format=application/json;charset=utf-8");

  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.setRequestMethod(HttpMethod.GET.name());
  connection.setRequestProperty(HttpHeader.ACCEPT_CHARSET, "abc");
  connection.connect();

  assertEquals(HttpStatusCode.OK.getStatusCode(), connection.getResponseCode());

  assertNotNull(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  ContentType contentType = ContentType.parse(connection.getHeaderField(HttpHeader.CONTENT_TYPE));
  assertEquals("application", contentType.getType());
  assertEquals("json", contentType.getSubtype());
  assertEquals(2, contentType.getParameters().size());
  assertEquals("minimal", contentType.getParameter("odata.metadata"));
  assertEquals("utf-8", contentType.getParameter("charset"));

  final String content = IOUtils.toString(connection.getInputStream());
  assertNotNull(content);
}

Source File: BatchLineReader.java From olingo-odata4 with Apache License 2.0

6 votes

private void updateCurrentCharset(final String currentLine) {
  if (currentLine != null) {
    if (currentLine.startsWith(HttpHeader.CONTENT_TYPE)) {
      final ContentType contentType = ContentType.parse(
          currentLine.substring(HttpHeader.CONTENT_TYPE.length() + 1, currentLine.length() - 2).trim());
      if (contentType != null) {
        final String charsetString = contentType.getParameter(ContentType.PARAMETER_CHARSET);
        currentCharset = charsetString == null ?
            contentType.isCompatible(ContentType.APPLICATION_JSON) || contentType.getSubtype().contains("xml") ?
                Charset.forName("UTF-8") :
                DEFAULT_CHARSET :
            Charset.forName(charsetString);

        final String boundary = contentType.getParameter(BOUNDARY);
        if (boundary != null) {
          currentBoundary = DOUBLE_DASH + boundary;
        }
      }
    } else if (CRLF.equals(currentLine)) {
      readState.foundLinebreak();
    } else if (isBoundary(currentLine)) {
      readState.foundBoundary();
    }
  }
}

Source File: ClientEntitySetIteratorTest.java From olingo-odata4 with Apache License 2.0

6 votes

@Test
public void testGetEntitySetIteratorWithInnerNav() throws IOException, URISyntaxException {
    String str = "{\"@odata.context\":\"$metadata#Cubes(Name)\","
        + "\"value\":[{\"@odata.etag\":\"W/\\\"c24af675e00a3f95ef63f223fb9c2cc8d6455459\\\"\","
        + "\"Name\":\"}Capabilities\","
        + "\"NavProp\":{\"PropertyInt\":1}}]}";
    
    InputStream stream = new ByteArrayInputStream(str.getBytes());
    ODataClient oDataClient = ODataClientFactory.getClient();
    ClientEntitySetIterator<ClientEntitySet, ClientEntity> entitySetIterator = 
        new ClientEntitySetIterator<ClientEntitySet, ClientEntity>(
        oDataClient, stream, ContentType.parse(ContentType.JSON.toString()));

    ArrayList<ClientEntity> entities = new ArrayList<ClientEntity>();
    while (entitySetIterator.hasNext()) {
        ClientEntity next = entitySetIterator.next();
        entities.add(next);
    }

    Assert.assertEquals(1, entities.size());
    Assert.assertNotNull(entities.get(0).getProperty("NavProp"));
    Assert.assertEquals("}Capabilities", entities.get(0).getProperty("Name").getPrimitiveValue().toString());
}

Source File: ODataValueRequestImpl.java From olingo-odata4 with Apache License 2.0

6 votes

@Override
public ClientPrimitiveValue getBody() {
  if (value == null) {
    final ContentType contentType = ContentType.parse(getContentType());

    try {
      value = odataClient.getObjectFactory().newPrimitiveValueBuilder().
              setType(contentType.isCompatible(ContentType.TEXT_PLAIN)
                      ? EdmPrimitiveTypeKind.String : EdmPrimitiveTypeKind.Stream).
              setValue(IOUtils.toString(getRawResponse())).build();
    } catch (Exception e) {
      throw new HttpClientException(e);
    } finally {
      this.close();
    }
  }
  return value;
}

Source File: ODataValueUpdateRequestImpl.java From olingo-odata4 with Apache License 2.0

6 votes

@Override
public ClientPrimitiveValue getBody() {
  if (resValue == null) {
    final ContentType contentType = ContentType.parse(getAccept());
    
    try {
      resValue = odataClient.getObjectFactory().newPrimitiveValueBuilder().
              setType(contentType.isCompatible(ContentType.TEXT_PLAIN)
                      ? EdmPrimitiveTypeKind.String : EdmPrimitiveTypeKind.Stream).
              setValue(getRawResponse()).
              build();
    } catch (Exception e) {
      throw new HttpClientException(e);
    } finally {
      this.close();
    }
  }
  return resValue;
}

Source File: BatchRequestTransformator.java From olingo-odata4 with Apache License 2.0

5 votes

private Charset getCharset(final BatchQueryOperation operation) {
  final ContentType contentType = ContentType.parse(operation.getHeaders().getHeader(HttpHeader.CONTENT_TYPE));
  if (contentType != null) {
    final String charsetValue = contentType.getParameter(ContentType.PARAMETER_CHARSET);
    if (charsetValue == null) {
      if (contentType.isCompatible(ContentType.APPLICATION_JSON) || contentType.getSubtype().contains("xml")) {
        return Charset.forName("UTF-8");
      }
    } else {
      return Charset.forName(charsetValue);
    }
  }
  return Charset.forName("ISO-8859-1");
}

Source File: ClientEntitySetIteratorTest.java From olingo-odata4 with Apache License 2.0

5 votes

@Test(expected=IllegalStateException.class)
public void testEntitySetIteratorGetNextMethod() throws IOException, URISyntaxException {
    String str = "{\"@odata.context\":\"$metadata#Cubes(Name)\","
        + "\"@odata.metadataEtag\": \"W/\\\"582997db-15b9-4a23-a8b0-c91bf45b4194\\\"\","
        + "\"value\":[{\"PropertyInt16\": 0,\"PropertyString\": \"\"}]}";
    
    InputStream stream = new ByteArrayInputStream(str.getBytes());
    ODataClient oDataClient = ODataClientFactory.getClient();
    ClientEntitySetIterator<ClientEntitySet, ClientEntity> entitySetIterator = 
        new ClientEntitySetIterator<ClientEntitySet, ClientEntity>(
        oDataClient, stream, ContentType.parse(ContentType.JSON.toString()));

    entitySetIterator.getNext();
}

Source File: ODataEntitySetIteratorRequestImpl.java From olingo-odata4 with Apache License 2.0

5 votes

@Override
public ClientEntitySetIterator<ES, E> getBody() {
  if (entitySetIterator == null) {
    entitySetIterator = new ClientEntitySetIterator<>(
            odataClient, getRawResponse(), ContentType.parse(getContentType()));
  }
  return entitySetIterator;
}

Source File: ClientEntitySetIteratorTest.java From olingo-odata4 with Apache License 2.0

5 votes

@Test(expected=UnsupportedOperationException.class)
public void testEntitySetIteratorRemoveMethod() throws IOException, URISyntaxException {
    String str = "{\"@odata.context\":\"$metadata#Cubes(Name)\","
        + "\"@odata.metadataEtag\": \"W/\\\"582997db-15b9-4a23-a8b0-c91bf45b4194\\\"\","
        + "\"value\":[{\"PropertyInt16\": 0,\"PropertyString\": \"\"}]}";
    
    InputStream stream = new ByteArrayInputStream(str.getBytes());
    ODataClient oDataClient = ODataClientFactory.getClient();
    ClientEntitySetIterator<ClientEntitySet, ClientEntity> entitySetIterator = 
        new ClientEntitySetIterator<ClientEntitySet, ClientEntity>(
        oDataClient, stream, ContentType.parse(ContentType.JSON.toString()));

    entitySetIterator.remove();
}

Source File: ODataDispatcher.java From olingo-odata4 with Apache License 2.0

5 votes

private void handleMediaValueDispatching(final ODataRequest request, final ODataResponse response,
    final UriResource resource) throws ContentNegotiatorException, 
   ODataApplicationException, ODataLibraryException,
    ODataHandlerException, PreconditionException {
  final HttpMethod method = request.getMethod();
  validatePreferHeader(request);
  if (method == HttpMethod.GET) {
    // This can be a GET on an EntitySet, Navigation or Function
    final ContentType requestedContentType = ContentNegotiator.
        doContentNegotiation(uriInfo.getFormatOption(),
        request, handler.getCustomContentTypeSupport(), RepresentationType.MEDIA);
    handler.selectProcessor(MediaEntityProcessor.class)
        .readMediaEntity(request, response, uriInfo, requestedContentType);
    // PUT and DELETE can only be called on EntitySets or Navigation properties which are media resources
  } else if (method == HttpMethod.PUT && (isEntityOrNavigationMedia(resource) 
      || isSingletonMedia(resource))) {
    validatePreconditions(request, true);
    final ContentType requestFormat = ContentType.parse(request.getHeader(HttpHeader.CONTENT_TYPE));
    final ContentType responseFormat = ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),
        request, handler.getCustomContentTypeSupport(), RepresentationType.ENTITY);
    handler.selectProcessor(MediaEntityProcessor.class)
        .updateMediaEntity(request, response, uriInfo, requestFormat, responseFormat);
  } else if (method == HttpMethod.DELETE && isEntityOrNavigationMedia(resource)) {
    validatePreconditions(request, true);
    handler.selectProcessor(MediaEntityProcessor.class)
        .deleteMediaEntity(request, response, uriInfo);
  } else {
    throwMethodNotAllowed(method);
  }
}

Source File: ODataUpdateTests.java From syndesis with Apache License 2.0

5 votes

private static void updateProperty(String serviceURI, String resourcePath, String keyPredicate, String property, String value) throws Exception {
    URI httpURI = URI.create(serviceURI + FORWARD_SLASH +
                             resourcePath + OPEN_BRACKET +
                             QUOTE_MARK + keyPredicate + QUOTE_MARK +
                             CLOSE_BRACKET);

    ObjectNode node = OBJECT_MAPPER.createObjectNode();
    node.put(property, value);

    String data = OBJECT_MAPPER.writeValueAsString(node);
    HttpPatch request = new HttpPatch(httpURI);

    StringEntity httpEntity = new StringEntity(data, org.apache.http.entity.ContentType.APPLICATION_JSON);
    httpEntity.setChunked(false);
    request.setEntity(httpEntity);

    Header contentTypeHeader = request.getEntity().getContentType();
    ContentType contentType = ContentType.parse(contentTypeHeader.getValue());

    request.addHeader(HttpHeaders.ACCEPT, "application/json;odata.metadata=full,application/xml,*/*");
    request.addHeader(HttpHeaders.ACCEPT_CHARSET, Constants.UTF8.toLowerCase());
    request.addHeader(HttpHeaders.CONTENT_TYPE, contentType.toString());
    request.addHeader(HttpHeader.ODATA_VERSION, ODataServiceVersion.V40.toString());
    request.addHeader(HttpHeader.ODATA_MAX_VERSION, ODataServiceVersion.V40.toString());

    try (CloseableHttpClient client = HttpClients.createMinimal();
        CloseableHttpResponse response = client.execute(request)) {
        StatusLine statusLine = response.getStatusLine();
        assertEquals(HttpStatus.SC_NO_CONTENT, statusLine.getStatusCode());
    }
}

Source File: ODataDispatcher.java From olingo-odata4 with Apache License 2.0

4 votes

private void handlePrimitiveDispatching(final ODataRequest request, final ODataResponse response,
    final boolean isCollection) throws ODataApplicationException, ODataLibraryException {
  final HttpMethod method = request.getMethod();
  final RepresentationType representationType = isCollection ? RepresentationType.COLLECTION_PRIMITIVE
      : RepresentationType.PRIMITIVE;
  if (method == HttpMethod.GET) {
    validatePreferHeader(request);
    final ContentType requestedContentType = ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),
        request, handler.getCustomContentTypeSupport(), representationType);
    if (isCollection) {
      handler.selectProcessor(PrimitiveCollectionProcessor.class)
          .readPrimitiveCollection(request, response, uriInfo, requestedContentType);
    } else {
      handler.selectProcessor(PrimitiveProcessor.class)
          .readPrimitive(request, response, uriInfo, requestedContentType);
    }
  } else if (method == HttpMethod.PUT || method == HttpMethod.PATCH) {
    validatePreconditions(request, false);
    ContentType requestFormat = null;
    List<UriResource> uriResources = uriInfo.getUriResourceParts();
    UriResource uriResource = uriResources.get(uriResources.size() - 1);
    if (uriResource instanceof UriResourcePrimitiveProperty &&
  		  ((UriResourcePrimitiveProperty)uriResource).getType()
  		  .getFullQualifiedName().getFullQualifiedNameAsString().equalsIgnoreCase(EDMSTREAM)) {
  	 requestFormat = ContentType.parse(request.getHeader(HttpHeader.CONTENT_TYPE));
    } else {
  	  requestFormat = getSupportedContentType(request.getHeader(HttpHeader.CONTENT_TYPE),
  	          representationType, true);
    }
    final ContentType responseFormat = ContentNegotiator.doContentNegotiation(uriInfo.getFormatOption(),
        request, handler.getCustomContentTypeSupport(), representationType);
    if (isCollection) {
      handler.selectProcessor(PrimitiveCollectionProcessor.class)
          .updatePrimitiveCollection(request, response, uriInfo, requestFormat, responseFormat);
    } else {
      handler.selectProcessor(PrimitiveProcessor.class)
          .updatePrimitive(request, response, uriInfo, requestFormat, responseFormat);
    }
  } else if (method == HttpMethod.DELETE) {
    validatePreferHeader(request);
    validatePreconditions(request, false);
    if (isCollection) {
      handler.selectProcessor(PrimitiveCollectionProcessor.class)
          .deletePrimitiveCollection(request, response, uriInfo);
    } else {
      handler.selectProcessor(PrimitiveProcessor.class)
          .deletePrimitive(request, response, uriInfo);
    }
  } else {
    throwMethodNotAllowed(method);
  }
}

Source File: StaticContentController.java From teiid-spring-boot with Apache License 2.0

4 votes

static void writeError(ServletRequest request, String code, String message,
        HttpServletResponse httpResponse, int statusCode) throws IOException {
    httpResponse.setStatus(statusCode);
    String format = request.getParameter("$format"); //$NON-NLS-1$
    if (format == null) {
        //TODO: could also look at the accepts header
        ContentType contentType = ContentType.parse(request.getContentType());
        if (contentType == null || contentType.isCompatible(ContentType.APPLICATION_JSON)) {
            format = "json"; //$NON-NLS-1$
        } else {
            format = "xml"; //$NON-NLS-1$
        }
    }
    PrintWriter writer = httpResponse.getWriter();
    if (code == null) {
        code = "";
    }
    if (message == null) {
        message = "";
    }
    if (format.equalsIgnoreCase("json")) { //$NON-NLS-1$
        httpResponse.setHeader(HttpHeader.CONTENT_TYPE, ContentType.APPLICATION_JSON.toContentTypeString());
        writer.write("{ \"error\": { \"code\": \""); //$NON-NLS-1$
        JSONParser.escape(code, writer);
        writer.write("\", \"message\": \""); //$NON-NLS-1$
        JSONParser.escape(message, writer);
        writer.write("\" } }"); //$NON-NLS-1$
    } else {
        try {
            httpResponse.setHeader(HttpHeader.CONTENT_TYPE, ContentType.APPLICATION_XML.toContentTypeString());
            XMLStreamWriter xmlStreamWriter = XMLOutputFactory.newInstance().createXMLStreamWriter(writer);
            xmlStreamWriter.writeStartElement("m", "error", "http://docs.oasis-open.org/odata/ns/metadata"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
            xmlStreamWriter.writeNamespace("m", "http://docs.oasis-open.org/odata/ns/metadata"); //$NON-NLS-1$ //$NON-NLS-2$
            xmlStreamWriter.writeStartElement("m", "code", "http://docs.oasis-open.org/odata/ns/metadata"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
            xmlStreamWriter.writeCharacters(code);
            xmlStreamWriter.writeEndElement();
            xmlStreamWriter.writeStartElement("m", "message", "http://docs.oasis-open.org/odata/ns/metadata"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
            xmlStreamWriter.writeCharacters(message);
            xmlStreamWriter.writeEndElement();
            xmlStreamWriter.writeEndElement();
            xmlStreamWriter.flush();
        } catch (XMLStreamException x) {
            throw new IOException(x);
        }
    }
    writer.close();
}

Java Code Examples for org.apache.olingo.commons.api.format.ContentType#parse()