java - Swing Worker Delay -

-

i have button click event fire swing worker thread in return fire thread long calculation including writing file. file read draw graphics. drawing part never happens if don't add delay in between.. (it says file not found although file there..what better way fix without adding delay..

 private void buttonfragmentactionperformed(java.awt.event.actionevent evt) {                                                    try     {         esiplusfragmenterworker epfw = new esiplusfragmenterworker(10, sdffile, cidspectrum);         epfw.execute();          thread.sleep(1000);          holder.moltable1.drawmolviewpanel(currdir+sep+"esifragments"+sep+"esifrag.sdf");     }     catch (exception e)     {         e.printstacktrace();     } }

swing worker

public class esiplusfragmenterworker extends swingworker<void, void>{  int mzppm_; string sdf_; string spectrum_; double mion_; moltable holder_;  esiplusfragmenterworker(int mzppm, string sdf, string spectrum) {     mzppm_ = mzppm;     sdf_ = sdf;     spectrum_ = spectrum; }  @override protected void doinbackground() {     try     {     molecule mol;     molimporter importer = new molimporter(sdf_);     executorservice te = executors.newfixedthreadpool(1);     while ((mol  = importer.read()) != null)      {      runnable epf = new esiplusfragmenter(mol, spectrum_, mzppm_);      thread t = new thread(epf);      te.execute(epf);     }     importer.close();     te.awaittermination(10, timeunit.minutes);     }     catch (exception e)     {       //       }         {         return null;     } }   @override protected void done() {     try {         //     } catch (exception e) {         //e.printstacktrace();     } }

}

never, never, never call thread.sleep(...) on edt put entire gui sleep. , besides, if estimate wrong, , background process takes longer sleep delay time?

one possible solution add propertychangelistener swingworker , listen on "state" property swingworker.statevalue swingworker.statevalue.done, drawing.

e.g.

private void buttonfragmentactionperformed(java.awt.event.actionevent evt) {   try {      esiplusfragmenterworker epfw = new esiplusfragmenterworker(10,            sdffile, cidspectrum);      epfw.addpropertychangelistener(new propertychangelistener() {          @override         public void propertychange(propertychangeevent pcevt) {            if ("state".equals(pcevt.getpropertyname())) {               if (pcevt.getnewvalue().equals(swingworker.statevalue.done)) {                  holder.moltable1.drawmolviewpanel(currdir + sep                        + "esifragments" + sep + "esifrag.sdf");               }            }         }      });      epfw.execute();

so waits until swingworker has completed business before calling code inside of listener.

another option call holder.moltable1.drawmolviewpanel inside of swingworker's done() method, , work too, doing noted above propertychangelistener, swingworker doesn't have have knowledge code called in listener (as opposed using swingworker's done() method), , may allow looser coupling.


Comments

Post a Comment

Popular posts from this blog

django - How can I change user group without delete record -

-
on website user have 1 group. , user can change group. it's made user.groups.clear() and user.groups.add(new_group) but it's not efficient, because there 2 sql query: delete, insert. how can change group update query? user , group related each other using manytomanyfield . means intersection table exists relating both entities, , if don't specify model map (using through attribute) django creates 1 you. looking @ sources django.contrib.auth.models see that's case. fortunatly, can access intermediary model using through attribute of manager (in case, user.groups.through ). can use regular model. example: >>> alice = user.objects.create_user('alice', 'alice@example.com', 'alicepw') >>> employee = group.objects.create(name='employee') >>> manager = group.objects.create(name='manager') >>> alice.groups.add(employee) >>> alice.groups.all() [<group: employee...
Read more

java - Need to add SOAP security token -

-
i need set custom soap header attribute on jax-ws generated webservice client. case webservice calls must go through proxy server requiring specific token (recieved web request header) present in soap request header. e.g.: 1 carserviceservice service = null; 2 service = new carserviceservice(new url(url), new qname(qname); 3 carserviceendpoint port = service.getcarserviceport(); it seems in line 3 wsdl retrieved , call fails due missing security token. 1 point direction on how done? a detailed example has been mentioned here: creating , deploying jax-ws web service on tomcat 6 this article shows how create , use security token .
Read more

java - EclipseLink JPA Object is not a known entity type -

-
i have strange problem eclipselink , object want persist. have 1 object (keypointlistimpl) stores object keypointimpl in list. persisting keypointimpl objects works great if try persist keypointlistimpl object java.lang.illegalargumentexception says object keypointimpl isn't known entity type. here keypointimpl code: @entity @table(name="keypoints") public class keypointimpl implements keypoint { @id @generatedvalue(strategy = generationtype.identity) private int id; @enumerated(enumtype.string) private detectortype keypointtype; private float x; private float y; private float size; private float angle; private float response; private int octave; private int classid; ... } here keypointlistimpl code: @entity @table(name="keypointlists") public class keypointlistimpl implements keypointlist { @id @generatedvalue(strategy = generationtype.identity) private int id; @onetoone(cascade={ca...
Read more