Java Code Examples for org.apache.olingo.server.api.serializer.ODataSerializer#entityCollection()

The following examples show how to use org.apache.olingo.server.api.serializer.ODataSerializer#entityCollection() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: GenericEntityCollectionProcessor.java From spring-boot-Olingo-oData with Apache License 2.0

5 votes

public void readEntityCollection(ODataRequest request,
		ODataResponse response, UriInfo uriInfo, ContentType responseFormat)
		throws ODataApplicationException, SerializerException {

	// 1st we have retrieve the requested EntitySet from the uriInfo object
	// (representation of the parsed service URI)
	List<UriResource> resourcePaths = uriInfo.getUriResourceParts();
	UriResourceEntitySet uriResourceEntitySet = (UriResourceEntitySet) resourcePaths
			.get(0); // in our example, the first segment is the EntitySet
	EdmEntitySet edmEntitySet = uriResourceEntitySet.getEntitySet();

	// 2nd: fetch the data from backend for this requested EntitySetName //
	// it has to be delivered as EntitySet object
	EntitySet entitySet = getData(uriInfo);

	// 3rd: create a serializer based on the requested format (json)
	ODataFormat format = ODataFormat.fromContentType(responseFormat);
	ODataSerializer serializer = odata.createSerializer(format);

	// 4th: Now serialize the content: transform from the EntitySet object
	// to InputStream
	EdmEntityType edmEntityType = edmEntitySet.getEntityType();
	ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet)
			.build();

	EntityCollectionSerializerOptions opts = EntityCollectionSerializerOptions
			.with().contextURL(contextUrl).build();
	InputStream serializedContent = serializer.entityCollection(
			edmEntityType, entitySet, opts);

	// Finally: configure the response object: set the body, headers and
	// status code
	response.setContent(serializedContent);
	response.setStatusCode(HttpStatusCode.OK.getStatusCode());
	response.setHeader(HttpHeader.CONTENT_TYPE,
			responseFormat.toContentTypeString());
}

Example 2

Source File: DemoEntityCollectionProcessor.java From cxf with Apache License 2.0

5 votes

public void readEntityCollection(ODataRequest request, ODataResponse response, 
        UriInfo uriInfo, ContentType responseFormat) throws ODataApplicationException, SerializerException {

    // 1st we have retrieve the requested EntitySet from the uriInfo object 
    // (representation of the parsed service URI)
    List<UriResource> resourcePaths = uriInfo.getUriResourceParts();
    // In our example, the first segment is the EntitySet
    UriResourceEntitySet uriResourceEntitySet = (UriResourceEntitySet) resourcePaths.get(0); 
    EdmEntitySet edmEntitySet = uriResourceEntitySet.getEntitySet();

    // 2nd: fetch the data from backend for this requested EntitySetName 
    // it has to be delivered as EntitySet object
    EntityCollection entitySet = getData(edmEntitySet);

    // 3rd: create a serializer based on the requested format (json)
    ODataSerializer serializer = odata.createSerializer(responseFormat);
    
    // 4th: Now serialize the content: transform from the EntitySet object to InputStream
    EdmEntityType edmEntityType = edmEntitySet.getEntityType();
    ContextURL contextUrl = ContextURL.with().entitySet(edmEntitySet).build();

    final String id = request.getRawBaseUri() + "/" + edmEntitySet.getName();
    EntityCollectionSerializerOptions opts =
            EntityCollectionSerializerOptions.with().id(id).contextURL(contextUrl).build();
    SerializerResult serializedContent = serializer.entityCollection(serviceMetadata, 
        edmEntityType, entitySet, opts);

    // Finally: configure the response object: set the body, headers and status code
    response.setContent(serializedContent.getContent());
    response.setStatusCode(HttpStatusCode.OK.getStatusCode());
    response.setHeader(HttpHeader.CONTENT_TYPE, responseFormat.toContentTypeString());
}

Example 3