Program: 52048
Project: 52048
Buggy source:
/** 
 * Delete item in collection.
 * @param collectionId Id of collection which will be deleted.
 * @param itemId Id of item in colletion.
 * @return It returns status code: OK(200). NOT_FOUND(404) if item orcollection was not found, UNAUTHORIZED(401) if user is not allowed to delete item or permission to write into collection.
 * @throws WebApplicationException It can be thrown by: SQLException, when was problem with database reading or writting. AuthorizeException, when was problem with authorization to item or collection. IOException, when was problem with removing item. ContextException, when was problem with creating context of DSpace.
 */
@DELETE @Path("String_Node_Str") @Consumes({MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML}) public Response deleteCollectionItem(@PathParam("String_Node_Str") Integer collectionId,@PathParam("String_Node_Str") Integer itemId,@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" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str");
  org.dspace.core.Context context=null;
  try {
    context=createContext(getUser(headers));
    org.dspace.content.Collection dspaceCollection=findCollection(context,collectionId,org.dspace.core.Constants.WRITE);
    org.dspace.content.Item item=null;
    org.dspace.content.ItemIterator dspaceItems=dspaceCollection.getItems();
    while (dspaceItems.hasNext()) {
      org.dspace.content.Item dspaceItem=dspaceItems.next();
      if (dspaceItem.getID() == itemId) {
        item=dspaceItem;
      }
    }
    if (item == null) {
      context.abort();
      log.warn("String_Node_Str" + itemId + "String_Node_Str");
      throw new WebApplicationException(Response.Status.NOT_FOUND);
    }
 else     if (!AuthorizeManager.authorizeActionBoolean(context,item,org.dspace.core.Constants.REMOVE)) {
      context.abort();
      if (context.getCurrentUser() != null) {
        log.error("String_Node_Str" + context.getCurrentUser().getEmail() + "String_Node_Str");
      }
 else {
        log.error("String_Node_Str");
      }
      throw new WebApplicationException(Response.Status.UNAUTHORIZED);
    }
    writeStats(dspaceCollection,UsageEvent.Action.UPDATE,user_ip,user_agent,xforwarderfor,headers,request);
    writeStats(item,UsageEvent.Action.REMOVE,user_ip,user_agent,xforwarderfor,headers,request);
    dspaceCollection.removeItem(item);
    context.complete();
  }
 catch (  ContextException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e.getMessage(),context);
  }
catch (  SQLException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e,context);
  }
catch (  AuthorizeException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e,context);
  }
catch (  IOException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e,context);
  }
 finally {
    processFinally(context);
  }
  log.info("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str");
  return Response.ok().build();
}

Fixed version (ground truth):
/** 
 * Delete item in collection.
 * @param collectionId Id of collection which will be deleted.
 * @param itemId Id of item in colletion.
 * @return It returns status code: OK(200). NOT_FOUND(404) if item orcollection was not found, UNAUTHORIZED(401) if user is not allowed to delete item or permission to write into collection.
 * @throws WebApplicationException It can be thrown by: SQLException, when was problem with database reading or writting. AuthorizeException, when was problem with authorization to item or collection. IOException, when was problem with removing item. ContextException, when was problem with creating context of DSpace.
 */
@DELETE @Path("String_Node_Str") @Consumes({MediaType.APPLICATION_JSON,MediaType.APPLICATION_XML}) public Response deleteCollectionItem(@PathParam("String_Node_Str") Integer collectionId,@PathParam("String_Node_Str") Integer itemId,@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" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str");
  org.dspace.core.Context context=null;
  try {
    context=createContext(getUser(headers));
    org.dspace.content.Collection dspaceCollection=findCollection(context,collectionId,org.dspace.core.Constants.WRITE);
    org.dspace.content.Item item=null;
    org.dspace.content.ItemIterator dspaceItems=dspaceCollection.getItems();
    while (dspaceItems.hasNext()) {
      org.dspace.content.Item dspaceItem=dspaceItems.next();
      if (dspaceItem.getID() == itemId) {
        item=dspaceItem;
      }
    }
    if (item == null) {
      context.abort();
      log.warn("String_Node_Str" + itemId + "String_Node_Str");
      throw new WebApplicationException(Response.Status.NOT_FOUND);
    }
 else     if (!AuthorizeManager.authorizeActionBoolean(context,item,org.dspace.core.Constants.REMOVE)) {
      context.abort();
      if (context.getCurrentUser() != null) {
        log.error("String_Node_Str" + context.getCurrentUser().getEmail() + "String_Node_Str");
      }
 else {
        log.error("String_Node_Str");
      }
      throw new WebApplicationException(Response.Status.UNAUTHORIZED);
    }
    writeStats(dspaceCollection,UsageEvent.Action.UPDATE,user_ip,user_agent,xforwarderfor,headers,request,context);
    writeStats(item,UsageEvent.Action.REMOVE,user_ip,user_agent,xforwarderfor,headers,request,context);
    dspaceCollection.removeItem(item);
    context.complete();
  }
 catch (  ContextException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e.getMessage(),context);
  }
catch (  SQLException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e,context);
  }
catch (  AuthorizeException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e,context);
  }
catch (  IOException e) {
    processException("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str"+ e,context);
  }
 finally {
    processFinally(context);
  }
  log.info("String_Node_Str" + itemId + "String_Node_Str"+ collectionId+ "String_Node_Str");
  return Response.ok().build();
}