RESTEasy + Asynchronous + Callback Method + Java -


i want support both synchronous , asynchronous call using resteasy-jaxrs. , asynchronous call should based on callback, async request have callbackuri, request gets processed asynchronously , upon completion makes call callbackuri operation status/result. can point me out correct place? see lot polling model, not callback resteasy.

i new asynchronous stuff...

thanks in advance!

thanks response rmlan.yes have support in jax-rs handle asynchronous using @suspended & asyncresponse. did following code, unable find way make callback client called api upon completion of task request. 

@get @path("/async") public string checkasync(@suspended final asyncresponse response) {     response.settimeouthandler(new timeouthandler() {          @override         public void handletimeout(asyncresponse asyncresponse) {             response.resume(response.status(response.status.service_unavailable)                     .entity("operation time out.").build());         }     });     response.settimeout(2, timeunit.seconds);      new thread(new runnable() {             @override             public void run() {                 string result = veryexpensiveoperation();                 response.resume(result);             }              private string veryexpensiveoperation() {                 try {                     thread.sleep(5000);                 } catch (interruptedexception e) {                     e.printstacktrace();                 }                 logger.debug("task processed fully");                 return "successful";             }         }).start();      return "nothing"; }

every method in class has 1 return ( or maybe void ) . need callbacks method . solution .

public abstract class myclass {      public abstract void mycallbackmethod();      public void mymethod(){          (int = 0; < 5; i++) {             // somthing             mycallbackmethod();// implements in future.         }      } }

when make object myclass , must implement mycallbackmethod abstract method . 

public class newmain {      public static void main(string[] args) {         myclass myclass=new myclass() {             @override            public void mycallbackmethod() {                system.err.println("this call back");            }        };        myclass.mymethod();     }  }

and result

this call back

this call back

this call back

this call back

this call back

it means can 5 call backs void method in class. way when not have idea body content of mycallbackmethod

the real example download file server in app .

you can call mycallbackmethod when bytes received , progress progressbar


Comments

Post a Comment

Popular posts from this blog

authentication - Mongodb revoke acccess to connect test database -

i have ec2 instance mongodb 3.2.0 installed. have user admin access. can connect user , perform operation remotely. 1 can connect database test remote if knows ip mongo 11.11.11.11. although not able make operations, want restrict access user credentials can connect server. first need create users , grant roles users, example: use admin db.createuser( { user: "myuseradmin", pwd: "abc123", roles: [ { role: "useradminanydatabase", db: "admin" } ] } ) then need start server --auth parameter mongod --auth more information here
Read more

r - Update two sets of radiobuttons reactively - shiny -

i have read ( how make choices in radiobuttons reactive in shiny? ) shows me how update radiobutton s in reactive way. however, when try , update 2 sets of buttons same data, 1 set renders. example: server: # create example data wafer <- rep(c(1:3), each=3) length <- c(1,1,2,1,1,1,3,5,1) width <- c(3,1,6,1,1,1,1,1,6) dd <- data.frame(wafer, length, width) shinyserver(function(input, output, session){ # create reactive dataframe store data values <- reactivevalues() values$df <- data.frame() # lengths , widths of wafer user input <- eventreactive(input$do, { subset(dd, wafer %in% input$wafer, select = length:width) }) # update reactive data frame lengths , widths have been selected user input observe({ if(!is.null(a())) { values$df <- rbind(isolate(values$df), a()) } }) output$wl <- renderdatatable({ a() }) # update radio buttons unique length , widths stored in values$df # ever "observe" put first in co...
Read more

ios - Realm over CoreData should I use NSFetchedResultController or a Dictionary? -

i'm working on app using core data , nsfetchedresultcontroller many reasons switch use realm. saw there "realm version" of nsfetchedresultcontroller on github wouldn't compatible current code using core data. the view controller displaying list of people same school, address book. list sublist of people studied in same city. so thinking make 1 unique request database retrieve list of people , filter locally list within 1 dictionary per school [string: anyobject] string section name within tableview , anyobject array of people. first solution, make nsfetchedresultcontroller each school predicate filtering location. delete actions etc.. handled delegates -> not compatible realm create dictionaries , update them each actions... -> works realm it's annoying code. any better solution? edit: i need clarify request: i'd write class inherit uitableviewcontroller. this class has list of people sorted in alphabetical order the tableview has ...
Read more