Databases
StackOverflow2013
Postsdbo
POreturn value from a function running in separate thread
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POreturn value from a function running in separate thread
    primarykey
    data
    text
    <p>I have this code that allows to execute functions in a separate thread if "Asynch" annotation is present on them. Everything works fine, except for the day when I realized I also have to handle return value for some new functions that I've just added. I could use handlers and message-passing for this, but, due to already built project structure(which is huge and working fine), I can't change the existing functions to work with message passing. </p> <p>Here's the code:</p> <pre><code>/** * Defining the Asynch interface */ @Retention(RetentionPolicy.RUNTIME) public @interface Asynch {} /** * Implementation of the Asynch interface. Every method in our controllers * goes through this interceptor. If the Asynch annotation is present, * this implementation invokes a new Thread to execute the method. Simple! */ public class AsynchInterceptor implements MethodInterceptor { public Object invoke(final MethodInvocation invocation) throws Throwable { Method method = invocation.getMethod(); Annotation[] declaredAnnotations = method.getDeclaredAnnotations(); if(declaredAnnotations != null &amp;&amp; declaredAnnotations.length &gt; 0) { for (Annotation annotation : declaredAnnotations) { if(annotation instanceof Asynch) { //start the requested task in a new thread and immediately //return back control to the caller new Thread(invocation.getMethod().getName()) { public void execute() { invocation.proceed(); } }.start(); return null; } } } return invocation.proceed(); } } </code></pre> <p>Now, how can i convert it so that if its something as:</p> <pre><code>@Asynch public MyClass getFeedback(int clientId){ } MyClass mResult = getFeedback(12345); </code></pre> <p>"mResult" gets updated with the returned value?</p> <p>Thanx in advance...</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USDonato Szilagyi
    1. USNitin Bansal
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POreturn value from a function running in separate thread
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. COMaybe if you use Callable? like in http://stackoverflow.com/a/3141235/828193
      singulars
      1. POreturn value from a function running in separate thread
      1. USuser000001
    2. COSure, that's the way. Ill chcek the link. Thnx :)
      singulars
      1. POreturn value from a function running in separate thread
      1. USNitin Bansal
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload