java - GWT environment errors within ScheduledThreadPoolExecutor threads -


i trying write server-side component of gwt application should pull xml file every 3 minutes , keep hashtable date after parsing xml.

after research, set thread using scheduledthreadpoolexecutor

stationparser = new tflstationsparserthread(bikestations); scheduler.schedulewithfixeddelay(stationparser, 2, 180, seconds);

the tflstationsparserthread has minimal constructor, , run() method

public void run() {     system.out.println("tflstationsparserthread run()");     stationparser.refreshstationdata(stations); }

the stationparser gets data following command

httpresponse response = urlfetchservicefactory.geturlfetchservice().fetch(request);

here problem: when .fetch() run within scheduledthreadpoolexecutor following error

com.google.apphosting.api.apiproxy$callnotfoundexception: api package 'urlfetch' or call 'fetch()' not found.     @ com.google.apphosting.api.apiproxy.makesynccall(apiproxy.java:98)     @ com.google.appengine.api.urlfetch.urlfetchserviceimpl.fetch(urlfetchserviceimpl.java:37)     @ couk.mtaylor.bikes.server.tflstationsparser.refreshstationdata(tflstationsparser.java:66)     @ couk.mtaylor.bikes.server.tflstationsparserthread.run(tflstationsparserthread.java:35)     ...

if comment out schedulewithfixeddelay scheduler , call refreshstationdata directly no such issue.

this leads me believe thread missing required gwt libraries, beyond knowledge , cannot find solutions online helping.

why getting these gwt error messages within scheduled thread not when call method directly?

i cannot confirm this, think might gae's way of telling me not how threads in gae. code works fine if remove gae buildpath , stop using .fetch().

for i'm dropping idea of writing gae while more used java.


Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more