may be Richard will help us: https://issues.apache.org/jira/browse/FELIX-2951
-------- Original Message -------- Subject: Re: pivot + osgi : class loading? From: Andrei Pozolotin <[email protected]> To: [email protected] Date: Fri 13 May 2011 10:52:26 PM CDT > having to use this all the time with pivot: > http://stackoverflow.com/questions/2198928/better-handling-of-thread-context-classloader-in-osgi > |ClassLoader tccl = Thread.currentThread().getContextClassLoader(); > try { > Thread.currentThread().setContextClassLoader(getClass().getClassLoader()); > /* > * Start threads, or establish connections, here, now > */ > } finally { > Thread.currentThread().setContextClassLoader(tccl); > }| > would be a bit too much! > > -------- Original Message -------- > Subject: pivot + osgi : class loading? > From: Andrei Pozolotin <[email protected]> > To: [email protected] > Date: Fri 13 May 2011 10:35:37 PM CDT >> >> *Greg, *hello; >> >> >> 1) I am hitting in the following issue while trying to run pivot >> in osgi environment: >> >> this example >> http://pivot.apache.org/tutorials/labels-and-image-views.html >> >> |<||Window| |title||=||"Labels"| |maximized||=||"true"| >> | ||xmlns:bxml||=||"http://pivot.apache.org/bxml";| >> | ||xmlns||=||"org.apache.pivot.wtk"||>| >> | ||<||BoxPane| |styles||=||"{padding:4, >> verticalAlignment:'center'}"||>| >> | ||<||ImageView| |image||=||"/clock.png"||/>| >> | ||<||Label| |text||=||"What time is it?"||/>| >> | ||</||BoxPane||>| >> |</||Window||>| >> >> >> 2) in terms of |ImageView| properties, it is getting translated >> by BXMLSerializer into a call |*setImage(String imageName)*| , >> which fails to locate resource: >> >> |||ImageView :: >> /** >> * Sets the image view's image by {@linkplain >> ClassLoader#getResource(String) >> * resource name}. >> * >> * @param imageName >> * The resource name of the image to set. >> * >> * @see #setImage(URL) >> */ >> * public final void setImage(String imageName) { >> * if (imageName == null) { >> throw new IllegalArgumentException("imageName is null."); >> } >> >> * ClassLoader classLoader = >> Thread.currentThread().getContextClassLoader(); >> setImage(classLoader.getResource(imageName.substring(1))); >> * } >> >> |2) note that in my case the pivot package classes and >> [AWT-EventQueue-0] event queues are instantiated in osgi host >> class loader >> >> >> http://felix.apache.org/site/apache-felix-framework-launching-and-embedding.html >> but the actual call to |setImage(String imageName)| is executed >> in osgi plugin class loader; >> >> just to give you an example, when this snipped gets executed >> inside osgi plugin bundle: >> >> // class loader used by pivot >> ClassLoader loader = >> Thread.currentThread().getContextClassLoader(); >> URL urlPivot = loader.getResource(""); >> * log.info("urlPivot : {} ", urlPivot); >> * >> // class loader used by plugin bundle >> URL urlOSGI = getClass().getResource(""); >> * log.info("urlOSGI : {}", urlOSGI); >> * >> it produces this log: >> >> 22:08:46.876 [AWT-EventQueue-0] INFO >> com.carrotgarden.core.LoginComponent - urlPivot : >> >> file:/home/user1/Workspaces/github/carrot-tester/carrot-test-osgi-ws/carrot-test-osgi-pivot-host/target/test-classes/ >> >> >> 22:08:46.876 [AWT-EventQueue-0] INFO >> com.carrotgarden.core.LoginComponent - urlOSGI : >> bundle://7.0:1/com/carrotgarden/core/ >> >> as you can see, >> * urlPivot : >> >> file:/home/user1/Workspaces/github/carrot-tester/carrot-test-osgi-ws/carrot-test-osgi-pivot-host/target/test-classes/ >> >> *resolves back to osgi host class loader which is not visible by >> the the client plugin >> >> and >> * urlOSGI : bundle://7.0:1/com/carrotgarden/core/ >> *resolves inside calling osgi bundle name space as expected; >> >> >> 3) am I missing something obvious? >> why do you use current class loading approach in pivot? >> are you open to change this? >> what would your recommend instead? >> >> >> Thank you, >> >> Andrei. >> >
