[OLINGO-662] Attachments support in olingo

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: V2 2.0.3
• Component/s: MISC, odata2-annotation, odata2-core, odata4-server
• Labels: attachments
• Flags: Important
• Assignee: Christian Amend
• Reporter: Prashanth
• Created: 19/May/15 07:21
• Updated: 21/Sep/15 13:33
• Resolved: 08/Jun/15 12:28

Description

This question is about the support for attachments uploading and downloading via Olingo Service ( Olingo V2 2.0.3 ). I have gone the olingo docs but didn't find any clue on how to provide support for uploading and downloading of attachments using olingo .

Does olingo supports this functionality ? If olingo supports , how to implements this ?

Following are some basics which i came to know by debugging the core library :
-> Media type support : We can provide support for custom content types by overriding the method getCustomContentTypes() in processor class.
-> Implementation : we can implement createEntity as following in processor class :

@Override
public ODataResponse createEntity(PostUriInfo uriInfo, InputStream content,
String requestContentType, String contentType) throws ODataException

{ ... }

But here content is giving the requestBody , not actual file/attachment.

Note : Here the support for attachments means - ex : in case of Rest , CXF provides some api which can be seen in following snippet :

@POST
@Consumes(

{MediaType.MULTIPART_FORM_DATA }

)
@Produces(

{MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON}

)
public Response create(@Context HttpHeaders httpHeaders, @Context UriInfo uriInfo,
MultipartBody multipartBody)

Here @Consumes media type provides consumption of multipart formdata and MultipartBody parameter can give us the attachments.

Similar to above , Does Olingo V2 2.0.3 provides any API ?How can we implement the support for attachments in Olingo V2 2.0.3 ? Please share us an example !