private Entity readEntityInternal(final UriInfoResource uriInfo, final EdmEntitySet entitySet)
throws DataProvider.DataProviderException {
// This method will extract the key values and pass them to the data provider
final UriResourceEntitySet resourceEntitySet =
(UriResourceEntitySet) uriInfo.getUriResourceParts().get(0);
return dataProvider.read(entitySet, resourceEntitySet.getKeyPredicates());
}
@Override
public void readEntityCollection(
final ODataRequest request,
ODataResponse response,
final UriInfo uriInfo,
final ContentType requestedContentType)
throws ODataApplicationException, SerializerException {
// First we have to figure out which entity set to use
final EdmEntitySet edmEntitySet = getEdmEntitySet(uriInfo.asUriInfoResource());
// Second we fetch the data for this specific entity set from the mock database and transform it
// into an EntitySet
// object which is understood by our serialization
EntityCollection entitySet = dataProvider.readAll(edmEntitySet);
// Next we create a serializer based on the requested format. This could also be a custom format
// but we do not
// support them in this example
ODataSerializer serializer = odata.createSerializer(requestedContentType);
// Now the content is serialized using the serializer.
final ExpandOption expand = uriInfo.getExpandOption();
final SelectOption select = uriInfo.getSelectOption();
InputStream serializedContent =
serializer
.entityCollection(
edm,
edmEntitySet.getEntityType(),
entitySet,
EntityCollectionSerializerOptions.with()
.contextURL(
isODataMetadataNone(requestedContentType)
? null
: getContextUrl(edmEntitySet, false, expand, select, null))
.count(uriInfo.getCountOption())
.expand(expand)
.select(select)
.build())
.getContent();
// Finally we set the response data, headers and status code
response.setContent(serializedContent);
response.setStatusCode(HttpStatusCode.OK.getStatusCode());
response.setHeader(HttpHeader.CONTENT_TYPE, requestedContentType.toContentTypeString());
}