Program: 52040
Project: 52040
Buggy source:
/** 
 * Return bitstream properties without file data. It can throws WebApplicationException with three response codes. Response code NOT_FOUND(404) or UNAUTHORIZED(401) or INTERNAL_SERVER_ERROR(500). Bad request is when id of bitstream does not exist. UNAUTHORIZED is if logged user into DSpace context have not permission to access bitstream. Server error when something went wrong.
 * @param bitstreamId Id of bitstream in DSpace.
 * @param expand This string defined, which additional options will be added into bitstream. Single options are separated by commas without space. Options are: "all", "parent".
 * @param headers If you want to access to item under logged user into context. In headers must be set header "rest-dspace-token" with passed token from login method.
 * @return If user is allowed to read bitstream, it returns instance ofbitstream. Otherwise, it throws WebApplicationException with response code UNAUTHORIZED.
 * @throws WebApplicationException It can happen on: Bad request, unauthorized, SQL exception and context exception(could not create context).
 */
@GET @Path("String_Node_Str") @Produces({MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML}) public Bitstream getBitstream(@PathParam("String_Node_Str") Integer bitstreamId,@QueryParam("String_Node_Str") String expand,@QueryParam("String_Node_Str") String user_ip,@QueryParam("String_Node_Str") String user_agent,@QueryParam("String_Node_Str") String xforwarderfor,@Context HttpHeaders headers,@Context HttpServletRequest request) throws WebApplicationException {
  log.info("String_Node_Str" + bitstreamId + "String_Node_Str");
  org.dspace.core.Context context=null;
  Bitstream bitstream=null;
  try {
    context=createContext(getUser(headers));
    org.dspace.content.Bitstream dspaceBitstream=findBitstream(context,bitstreamId,org.dspace.core.Constants.READ);
    writeStats(dspaceBitstream,UsageEvent.Action.VIEW,user_ip,user_agent,xforwarderfor,headers,request);
    bitstream=new Bitstream(dspaceBitstream,expand);
    context.complete();
    log.trace("String_Node_Str" + bitstreamId + "String_Node_Str");
  }
 catch (  SQLException e) {
    processException("String_Node_Str" + bitstreamId + "String_Node_Str"+ e,context);
  }
catch (  ContextException e) {
    processException("String_Node_Str" + bitstreamId + "String_Node_Str"+ e.getMessage(),context);
  }
 finally {
    processFinally(context);
  }
  return bitstream;
}

Fixed version (ground truth):
/** 
 * Return bitstream properties without file data. It can throws WebApplicationException with three response codes. Response code NOT_FOUND(404) or UNAUTHORIZED(401) or INTERNAL_SERVER_ERROR(500). Bad request is when id of bitstream does not exist. UNAUTHORIZED is if logged user into DSpace context have not permission to access bitstream. Server error when something went wrong.
 * @param bitstreamId Id of bitstream in DSpace.
 * @param expand This string defined, which additional options will be added into bitstream. Single options are separated by commas without space. Options are: "all", "parent".
 * @param headers If you want to access to item under logged user into context. In headers must be set header "rest-dspace-token" with passed token from login method.
 * @return If user is allowed to read bitstream, it returns instance ofbitstream. Otherwise, it throws WebApplicationException with response code UNAUTHORIZED.
 * @throws WebApplicationException It can happen on: Bad request, unauthorized, SQL exception and context exception(could not create context).
 */
@GET @Path("String_Node_Str") @Produces({MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML}) public Bitstream getBitstream(@PathParam("String_Node_Str") Integer bitstreamId,@QueryParam("String_Node_Str") String expand,@QueryParam("String_Node_Str") String user_ip,@QueryParam("String_Node_Str") String user_agent,@QueryParam("String_Node_Str") String xforwarderfor,@Context HttpHeaders headers,@Context HttpServletRequest request) throws WebApplicationException {
  log.info("String_Node_Str" + bitstreamId + "String_Node_Str");
  org.dspace.core.Context context=null;
  Bitstream bitstream=null;
  try {
    context=createContext(getUser(headers));
    org.dspace.content.Bitstream dspaceBitstream=findBitstream(context,bitstreamId,org.dspace.core.Constants.READ);
    writeStats(dspaceBitstream,UsageEvent.Action.VIEW,user_ip,user_agent,xforwarderfor,headers,request,context);
    bitstream=new Bitstream(dspaceBitstream,expand);
    context.complete();
    log.trace("String_Node_Str" + bitstreamId + "String_Node_Str");
  }
 catch (  SQLException e) {
    processException("String_Node_Str" + bitstreamId + "String_Node_Str"+ e,context);
  }
catch (  ContextException e) {
    processException("String_Node_Str" + bitstreamId + "String_Node_Str"+ e.getMessage(),context);
  }
 finally {
    processFinally(context);
  }
  return bitstream;
}