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trouble restarting e4+javafx application [message #1717998]

Fri, 18 December 2015 13:26

Paul Mira

Messages: 8
Registered: December 2015

Junior Member

Hello everyone,

So I'm working on this project and I'm trying to add p2 update functionnality to an e4+javafx application. Everything works fine until the part where I need to restart my application to reflect the changes made to the application model. The application closes, and then simply doesn't restart.

I was able to link this issue to something (no idea what exactly) related to the tycho/maven I used to build my application. See, when I use the eclipse PDE build for the export, everything works fine, I'm able to restart a dummy sample app. I simply add a Main Menu the application model, then a Menu (named File) > then a handled MenuItem (named Restart), handled by some RestartHandler.java class looking like this

import org.eclipse.e4.core.di.annotations.Execute;
import org.eclipse.e4.ui.workbench.IWorkbench;
public class RestartHandler {
	@Execute
	public void execute(IWorkbench workbench) {
	    workbench.restart();
	}
}

but the the same dummy app when generated by the tycho build will simply close and won't restart. I'm I missing something here? Any suggestions?

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Re: trouble restarting e4+javafx application [message #1717999 is a reply to message #1717998]

Fri, 18 December 2015 13:30

Christoph Keimel

Messages: 482
Registered: December 2010
Location: Germany

Senior Member

I am not sure about Tycho, but you can use the efxclipse RestartService to restart the application.

public class RestartHandler {
	@Execute
	public void execute(RestartService restartService) {
		restartService.restart(false);
	}
}

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Re: trouble restarting e4+javafx application [message #1718000 is a reply to message #1717998]

Fri, 18 December 2015 13:40

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

So when you export via tycho, how do you launch it? Via java -jar? Using
the javafx-packager generated .exe?

Tom

On 18.12.15 14:26, Paul Mira wrote:
> Hello everyone,
> So I'm working on this project and I'm trying to add p2 update
> functionnality to an e4+javafx application. Everything works fine until
> the part where I need to restart my application to reflect the changes
> made to the application model. The application closes, and then simply
> doesn't restart.
> I was able to link this issue to something (no idea what exactly)
> related to the tycho/maven I used to build my application. See, when I
> use the eclipse PDE build for the export, everything works fine, I'm
> able to restart a dummy sample app. I simply add a Main Menu the
> application model, then a Menu (named File) > then a handled MenuItem
> (named Restart), handled by some RestartHandler.java class looking like
> this
> import org.eclipse.e4.core.di.annotations.Execute;
> import org.eclipse.e4.ui.workbench.IWorkbench;
> public class RestartHandler {
> @Execute
> public void execute(IWorkbench workbench) {
> workbench.restart();
> }
> }
> but the the same dummy app when generated by the tycho build will simply
> close and won't restart. I'm I missing something here? Any suggestions?

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Re: trouble restarting e4+javafx application [message #1718002 is a reply to message #1717999]

Fri, 18 December 2015 13:46

Paul Mira

Messages: 8
Registered: December 2015

Junior Member

No luck, same result

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Re: trouble restarting e4+javafx application [message #1718003 is a reply to message #1718000]

Fri, 18 December 2015 13:56

Paul Mira

Messages: 8
Registered: December 2015

Junior Member

after generated via tycho I launch it using the generated .exe

The whole thing is really simple to reproduce, just build a sample e4-javafx app structure using the "JavaFX > Osgi > e4 application project" new project wizard. Add a simple main menu > menu > handled menu item to the application model, create a command+handler for it, and use the simple RestartHandler.java class I gave for the handler.

Then build the whole thing with tycho and see if the app restarts when you click on that menu item

I'm working on Eclipse 4.5.1 (Mars) M20150904-0015, with efxclipse -IDE 2.1.0

[Updated on: Fri, 18 December 2015 13:58]

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Re: trouble restarting e4+javafx application [message #1718061 is a reply to message #1718003]

Fri, 18 December 2015 18:50

Paul Mira

Messages: 8
Registered: December 2015

Junior Member

So thanks again everyone, I got a hunch from this Tom's advice
Quote:

If you are targeting Linux & Windows just check the include native
launcher artifacts, fix the p2-repos in your tycho build to include
those natives, fix the platform-section and run tycho.

which he gave here : https://www.eclipse.org/forums/index.php/t/1000801/

so what I did precisely (for anyone interested) is configure my parent pom.xml (in the releng project) and changed the target-platform-configuration related plugin. So I replaced this

<environments>
						<environment>
							<os>noenv</os>
							<ws>noenv</ws>
							<arch>noenv</arch>
						</environment>
					</environments>

with this

<environments>
						<environment>
							<os>win32</os>
							<ws>win32</ws>
							<arch>x86_64</arch>
						</environment>
					</environments>

Then I did the same in the build.xml ant file (also in the releng project) and replaced

/noenv/noenv/noenv

/win32/win32/x86_64

in the values of eclipse-app-dir property and equinox-launcher dir.

Then I checked "The product includes native launcher artifacts" in the product config file.

The tycho built app restarts just fine now.

So now I guess my app uses "native launchers", and can't be used on a different system. Suits me fine at this point, but I think there should be a more multi-system solution to this.

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Re: trouble restarting e4+javafx application [message #1718147 is a reply to message #1718003]

Sun, 20 December 2015 18:36

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

The exe you talk about is generated by the java-packager and it is quite
likely that it does not support the restart!

Tom

On 18.12.15 14:56, Paul Mira wrote:
> after generated via tycho I launch it using the generated .exe
>
> The whole thing is really simple to reproduce, just build a sample
> e4-javafx app structure using the "JavaFX > Osgi > e4 application
> project" new project wizard. Add a simple main menu > menu > handled
> menu item to the application model, create a command+handler for it, and
> use the simple RestartHandler.java class I gave for the handler.
> Then build the whole thing with tycho and see if the app restarts when
> you click on that menu item

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Re: trouble restarting e4+javafx application [message #1718148 is a reply to message #1718061]

Sun, 20 December 2015 18:37

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Right now the exe it the one from Eclipse, which works fine on windows
but fails on OS-X because JavaFX does not get a hand on the event loop.

Tom

On 18.12.15 19:50, Paul Mira wrote:
> So thanks again everyone, I got a hunch from this Tom's advice Quote:
>> If you are targeting Linux & Windows just check the include native
>> launcher artifacts, fix the p2-repos in your tycho build to include
>> those natives, fix the platform-section and run tycho.
>
>
> which he gave here : https://www.eclipse.org/forums/index.php/t/1000801/
>
> so what I did precisely (for anyone interested) is configure my parent
> pom.xml (in the releng project) and changed the
> target-platform-configuration related plugin. So I replaced this
> <environments>
> <environment>
> <os>noenv</os>
> <ws>noenv</ws>
> <arch>noenv</arch>
> </environment>
> </environments>
> with this <environments>
> <environment>
> <os>win32</os>
> <ws>win32</ws>
> <arch>x86_64</arch>
> </environment>
> </environments>
> Then I did the same in the build.xml ant file (also in the releng
> project) and replaced /noenv/noenv/noenv by /win32/win32/x86_64 in the
> values of eclipse-app-dir property and equinox-launcher dir.
>
> Then I checked "The product includes native launcher artifacts" in the
> product config file.
> The tycho built app restarts just fine now.
> So now I guess my app uses "native launchers", and can't be used on a
> different system. Suits me fine at this point, but I think there should
> be a more multi-system solution to this.

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