private BatchChangeSetPart createBatchChangeSetPart(
Edm edm, Map<String, String> contentIdMap, Olingo2BatchChangeRequest batchRequest)
throws EdmException, URISyntaxException, EntityProviderException, IOException,
ODataApplicationException {
// build body string
String resourcePath = batchRequest.getResourcePath();
// is it a referenced entity?
if (resourcePath.startsWith("$")) {
resourcePath = replaceContentId(edm, resourcePath, contentIdMap);
}
final UriInfoWithType uriInfo = parseUri(edm, resourcePath, null);
// serialize data into ODataResponse object, if set in request and this is not a DELETE request
final Map<String, String> headers = new HashMap<String, String>();
byte[] body = null;
if (batchRequest.getBody() != null && !Operation.DELETE.equals(batchRequest.getOperation())) {
final ODataResponse response = writeContent(edm, uriInfo, batchRequest.getBody());
// copy response headers
for (String header : response.getHeaderNames()) {
headers.put(header, response.getHeader(header));
}
// get (http) entity which is for default Olingo2 implementation an InputStream
body =
response.getEntity() instanceof InputStream
? EntityProvider.readBinary((InputStream) response.getEntity())
: null;
if (body != null) {
headers.put(HttpHeaders.CONTENT_LENGTH, String.valueOf(body.length));
}
}
// Olingo is sensitive to batch part charset case!!
headers.put(HttpHeaders.ACCEPT, getResourceContentType(uriInfo).toString().toLowerCase());
if (!headers.containsKey(HttpHeaders.CONTENT_TYPE)) {
headers.put(HttpHeaders.CONTENT_TYPE, getContentType());
}
// add request headers
headers.putAll(batchRequest.getHeaders());
final String contentId = batchRequest.getContentId();
if (contentId != null) {
contentIdMap.put("$" + contentId, resourcePath);
}
return BatchChangeSetPart.uri(createBatchUri(batchRequest))
.method(batchRequest.getOperation().getHttpMethod())
.contentId(contentId)
.headers(headers)
.body(body == null ? null : new String(body, Consts.UTF_8))
.build();
}
@Override
public ODataResponse deleteEntity(DeleteUriInfo uriInfo, String contentType)
throws ODataException {
LOG.debug("Deleting Entity: " + uriInfo);
if ("Cars".equals(uriInfo.getTargetEntitySet().getName())) {
int key = getKeyValue(uriInfo.getKeyPredicates().get(0));
// if there is no entry with this key available, one should return
// "404 Not Found"
// return ODataResponse.status(HttpStatusCodes.NOT_FOUND).build();
// now one can delete the entry with this particular key in the
// backend...
} else if ("Manufacturers".equals(uriInfo.getTargetEntitySet().getName())) {
int key = getKeyValue(uriInfo.getKeyPredicates().get(0));
// now one can delete the entry with this particular key in the
// backend...
}
// we can return Status Code 204 No Content because the URI Parsing
// already guarantees that
// a) only valid URIs are dispatched (also checked against the metadata)
// b) 404 Not Found is already returned above, when the entry does not
// exist
return ODataResponse.status(HttpStatusCodes.NO_CONTENT).build();
}
@Override
public ODataResponse updateEntity(
PutMergePatchUriInfo uriInfo,
InputStream content,
String requestContentType,
boolean merge,
String contentType)
throws ODataException {
LOG.debug("Updating Entity: " + uriInfo);
EntityProviderReadProperties properties =
EntityProviderReadProperties.init().mergeSemantic(false).build();
ODataEntry entry =
EntityProvider.readEntry(
requestContentType, uriInfo.getTargetEntitySet(), content, properties);
// if something goes wrong in deserialization this is managed via the
// ExceptionMapper,
// no need for an application to do exception handling here an convert
// the exceptions in HTTP exceptions
Map<String, Object> data = entry.getProperties();
if ("Cars".equals(uriInfo.getTargetEntitySet().getName())) {
int key = getKeyValue(uriInfo.getKeyPredicates().get(0));
// if there is no entry with this key available, one should return
// "404 Not Found"
// return ODataResponse.status(HttpStatusCodes.NOT_FOUND).build();
// now one can use the data to create the entry in the backend ...
String model = (String) data.get("Model");
// ...
} else if ("Manufacturers".equals(uriInfo.getTargetEntitySet().getName())) {
int key = getKeyValue(uriInfo.getKeyPredicates().get(0));
// now one can use the data to create the entry in the backend ...
}
// we can return Status Code 204 No Content because the URI Parsing
// already guarantees that
// a) only valid URIs are dispatched (also checked against the metadata)
// b) 404 Not Found is already returned above, when the entry does not
// exist
return ODataResponse.status(HttpStatusCodes.NO_CONTENT).build();
}
private ODataResponse parseBatchRequest(final Edm edm, final List<Olingo2BatchRequest> batchParts)
throws IOException, EntityProviderException, ODataApplicationException, EdmException,
URISyntaxException {
// create Batch request from parts
final ArrayList<BatchPart> parts = new ArrayList<BatchPart>();
final ArrayList<BatchChangeSetPart> changeSetParts = new ArrayList<BatchChangeSetPart>();
final Map<String, String> contentIdMap = new HashMap<String, String>();
for (Olingo2BatchRequest batchPart : batchParts) {
if (batchPart instanceof Olingo2BatchQueryRequest) {
// need to add change set parts collected so far??
if (!changeSetParts.isEmpty()) {
addChangeSetParts(parts, changeSetParts);
changeSetParts.clear();
contentIdMap.clear();
}
// add to request parts
final UriInfoWithType uriInfo = parseUri(edm, batchPart.getResourcePath(), null);
parts.add(createBatchQueryPart(uriInfo, (Olingo2BatchQueryRequest) batchPart));
} else {
// add to change set parts
final BatchChangeSetPart changeSetPart =
createBatchChangeSetPart(edm, contentIdMap, (Olingo2BatchChangeRequest) batchPart);
changeSetParts.add(changeSetPart);
}
}
// add any remaining change set parts
if (!changeSetParts.isEmpty()) {
addChangeSetParts(parts, changeSetParts);
}
final String boundary = BOUNDARY_PREFIX + UUID.randomUUID();
InputStream batchRequest = EntityProvider.writeBatchRequest(parts, boundary);
// two blank lines are already added. No need to add extra blank lines
final String contentHeader = BATCH_CONTENT_TYPE + BOUNDARY_PARAMETER + boundary;
return ODataResponse.entity(batchRequest).contentHeader(contentHeader).build();
}
private ODataResponse writeContent(Edm edm, UriInfoWithType uriInfo, Object content)
throws ODataApplicationException, EdmException, EntityProviderException, URISyntaxException,
IOException {
String responseContentType = getContentType();
ODataResponse response;
switch (uriInfo.getUriType()) {
case URI4:
case URI5:
// simple property
final List<EdmProperty> simplePropertyPath = uriInfo.getPropertyPath();
final EdmProperty simpleProperty = simplePropertyPath.get(simplePropertyPath.size() - 1);
responseContentType = simpleProperty.getMimeType();
if (uriInfo.isValue()) {
response = EntityProvider.writePropertyValue(simpleProperty, content);
responseContentType = TEXT_PLAIN_WITH_CS_UTF_8.toString();
} else {
response = EntityProvider.writeProperty(getContentType(), simpleProperty, content);
}
break;
case URI3:
// complex property
final List<EdmProperty> complexPropertyPath = uriInfo.getPropertyPath();
final EdmProperty complexProperty = complexPropertyPath.get(complexPropertyPath.size() - 1);
response = EntityProvider.writeProperty(responseContentType, complexProperty, content);
break;
case URI7A:
// $links with 0..1 cardinality property
final EdmEntitySet targetLinkEntitySet = uriInfo.getTargetEntitySet();
EntityProviderWriteProperties linkProperties =
EntityProviderWriteProperties.serviceRoot(new URI(serviceUri + SEPARATOR)).build();
@SuppressWarnings("unchecked")
final Map<String, Object> linkMap = (Map<String, Object>) content;
response =
EntityProvider.writeLink(
responseContentType, targetLinkEntitySet, linkMap, linkProperties);
break;
case URI7B:
// $links with * cardinality property
final EdmEntitySet targetLinksEntitySet = uriInfo.getTargetEntitySet();
EntityProviderWriteProperties linksProperties =
EntityProviderWriteProperties.serviceRoot(new URI(serviceUri + SEPARATOR)).build();
@SuppressWarnings("unchecked")
final List<Map<String, Object>> linksMap = (List<Map<String, Object>>) content;
response =
EntityProvider.writeLinks(
responseContentType, targetLinksEntitySet, linksMap, linksProperties);
break;
case URI1:
case URI2:
case URI6A:
case URI6B:
// Entity
final EdmEntitySet targetEntitySet = uriInfo.getTargetEntitySet();
EntityProviderWriteProperties properties =
EntityProviderWriteProperties.serviceRoot(new URI(serviceUri + SEPARATOR)).build();
@SuppressWarnings("unchecked")
final Map<String, Object> objectMap = (Map<String, Object>) content;
response =
EntityProvider.writeEntry(responseContentType, targetEntitySet, objectMap, properties);
break;
case URI9:
// $batch
@SuppressWarnings("unchecked")
final List<Olingo2BatchRequest> batchParts = (List<Olingo2BatchRequest>) content;
response = parseBatchRequest(edm, batchParts);
break;
default:
// notify exception and return!!!
throw new ODataApplicationException(
"Unsupported resource type " + uriInfo.getTargetType(), Locale.ENGLISH);
}
return response.getContentHeader() != null
? response
: ODataResponse.fromResponse(response).contentHeader(responseContentType).build();
}
private <T> void writeContent(
final Edm edm,
HttpEntityEnclosingRequestBase httpEntityRequest,
final UriInfoWithType uriInfo,
final Object content,
final Olingo2ResponseHandler<T> responseHandler) {
try {
// process resource by UriType
final ODataResponse response = writeContent(edm, uriInfo, content);
// copy all response headers
for (String header : response.getHeaderNames()) {
httpEntityRequest.setHeader(header, response.getHeader(header));
}
// get (http) entity which is for default Olingo2 implementation an InputStream
if (response.getEntity() instanceof InputStream) {
httpEntityRequest.setEntity(new InputStreamEntity((InputStream) response.getEntity()));
/*
// avoid sending it without a header field set
if (!httpEntityRequest.containsHeader(HttpHeaders.CONTENT_TYPE)) {
httpEntityRequest.addHeader(HttpHeaders.CONTENT_TYPE, getContentType());
}
*/
}
// execute HTTP request
final Header requestContentTypeHeader =
httpEntityRequest.getFirstHeader(HttpHeaders.CONTENT_TYPE);
final ContentType requestContentType =
requestContentTypeHeader != null
? ContentType.parse(requestContentTypeHeader.getValue())
: contentType;
execute(
httpEntityRequest,
requestContentType,
new AbstractFutureCallback<T>(responseHandler) {
@SuppressWarnings("unchecked")
@Override
public void onCompleted(HttpResponse result)
throws IOException, EntityProviderException, BatchException,
ODataApplicationException {
// if a entity is created (via POST request) the response body contains the new
// created entity
HttpStatusCodes statusCode =
HttpStatusCodes.fromStatusCode(result.getStatusLine().getStatusCode());
// look for no content, or no response body!!!
final boolean noEntity =
result.getEntity() == null || result.getEntity().getContentLength() == 0;
if (statusCode == HttpStatusCodes.NO_CONTENT || noEntity) {
responseHandler.onResponse(
(T) HttpStatusCodes.fromStatusCode(result.getStatusLine().getStatusCode()));
} else {
switch (uriInfo.getUriType()) {
case URI9:
// $batch
final List<BatchSingleResponse> singleResponses =
EntityProvider.parseBatchResponse(
result.getEntity().getContent(),
result.getFirstHeader(HttpHeaders.CONTENT_TYPE).getValue());
// parse batch response bodies
final List<Olingo2BatchResponse> responses =
new ArrayList<Olingo2BatchResponse>();
Map<String, String> contentIdLocationMap = new HashMap<String, String>();
final List<Olingo2BatchRequest> batchRequests =
(List<Olingo2BatchRequest>) content;
final Iterator<Olingo2BatchRequest> iterator = batchRequests.iterator();
for (BatchSingleResponse response : singleResponses) {
final Olingo2BatchRequest request = iterator.next();
if (request instanceof Olingo2BatchChangeRequest
&& ((Olingo2BatchChangeRequest) request).getContentId() != null) {
contentIdLocationMap.put(
"$" + ((Olingo2BatchChangeRequest) request).getContentId(),
response.getHeader(HttpHeaders.LOCATION));
}
try {
responses.add(parseResponse(edm, contentIdLocationMap, request, response));
} catch (Exception e) {
// report any parsing errors as error response
responses.add(
new Olingo2BatchResponse(
Integer.parseInt(response.getStatusCode()),
response.getStatusInfo(),
response.getContentId(),
response.getHeaders(),
new ODataApplicationException(
"Error parsing response for " + request + ": " + e.getMessage(),
Locale.ENGLISH,
e)));
}
}
responseHandler.onResponse((T) responses);
break;
case URI4:
case URI5:
// simple property
// get the response content as Object for $value or Map<String, Object>
// otherwise
final List<EdmProperty> simplePropertyPath = uriInfo.getPropertyPath();
final EdmProperty simpleProperty =
simplePropertyPath.get(simplePropertyPath.size() - 1);
if (uriInfo.isValue()) {
responseHandler.onResponse(
(T)
EntityProvider.readPropertyValue(
simpleProperty, result.getEntity().getContent()));
} else {
responseHandler.onResponse(
(T)
EntityProvider.readProperty(
getContentType(),
simpleProperty,
result.getEntity().getContent(),
EntityProviderReadProperties.init().build()));
}
break;
case URI3:
// complex property
// get the response content as Map<String, Object>
final List<EdmProperty> complexPropertyPath = uriInfo.getPropertyPath();
final EdmProperty complexProperty =
complexPropertyPath.get(complexPropertyPath.size() - 1);
responseHandler.onResponse(
(T)
EntityProvider.readProperty(
getContentType(),
complexProperty,
result.getEntity().getContent(),
EntityProviderReadProperties.init().build()));
break;
case URI7A:
// $links with 0..1 cardinality property
// get the response content as String
final EdmEntitySet targetLinkEntitySet = uriInfo.getTargetEntitySet();
responseHandler.onResponse(
(T)
EntityProvider.readLink(
getContentType(),
targetLinkEntitySet,
result.getEntity().getContent()));
break;
case URI7B:
// $links with * cardinality property
// get the response content as java.util.List<String>
final EdmEntitySet targetLinksEntitySet = uriInfo.getTargetEntitySet();
responseHandler.onResponse(
(T)
EntityProvider.readLinks(
getContentType(),
targetLinksEntitySet,
result.getEntity().getContent()));
break;
case URI1:
case URI2:
case URI6A:
case URI6B:
// Entity
// get the response content as an ODataEntry object
responseHandler.onResponse(
(T)
EntityProvider.readEntry(
response.getContentHeader(),
uriInfo.getTargetEntitySet(),
result.getEntity().getContent(),
EntityProviderReadProperties.init().build()));
break;
default:
throw new ODataApplicationException(
"Unsupported resource type " + uriInfo.getTargetType(), Locale.ENGLISH);
}
}
}
});
} catch (ODataException e) {
responseHandler.onException(e);
} catch (URISyntaxException e) {
responseHandler.onException(e);
} catch (UnsupportedEncodingException e) {
responseHandler.onException(e);
} catch (IOException e) {
responseHandler.onException(e);
}
}