 Difficulties with tutorial examples [message #1015844] |
Sun, 03 March 2013 12:36  |
 Achim Schmitz
Messages: 5
Registered: February 2013 |
Junior Member |
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Sorry if this all seems a bit basic, but I am definitely not a newcomer to eclipse. I am, however quite new to plugin development and an absolute novice where e4 is concerned.
I decided to do a few tutes to get up to speed with RCP and e4. I've now tried 3 and get the same result each time. I go through the following steps in (various order) but cannot get anything to work.
To date, beyond creating and running the initial app, I get nowhere. I even tried using Tom Schindl's live editor without any effect.
Since these are very basic tutes and I cannot find any other references to these sorts of problems in other forums, I assume I must be doing something really stupid. Or maybe I'm just missing the point of something.
Can anyone give me a hint where I should look to get things moving forward.
Thanks in advance.
Achim
[Updated on: Sun, 03 March 2013 12:42] Report message to a moderator |
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| Re: Difficulties with tutorial examples [message #1016010 is a reply to message #1015885] |
Mon, 04 March 2013 10:24  |
Achim Schmitz
Messages: 5
Registered: February 2013 |
Junior Member |
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Thanks for your reply, Dirk. Your comment is very enlightening and I suspect you're right. However, I'm still uncertain as to how I can track the error down.
As for information about the project, I am not allowed to post the link (less than 5 posts, you see), but if you google "eclipse-4-final-sprint-part-1-the-e4-application-model" you will find it.
From years of Java Web development, I am in the habit of looking for run-time errors on the console. Last time I tried looking at the error log instead and found:
- one error without a message that allegedly comes from org.eclipse.e4.ui.workbench
- three "Unhandled event loop exception" errors arising from org.eclipse.ui
Stack trace from the first error is in the uploaded file 20120304_stack_trace_1.txt
Stack trace from the second error is in the uploaded file 20120304_stack_trace_2.txt:
Session Data:
Quote:
eclipse.buildId=M20120914-1800
java.version=1.6.0_20
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Framework arguments: -product org.eclipse.epp.package.rcp.product
Command-line arguments: -os linux -ws gtk -arch x86 -product org.eclipse.epp.package.rcp.product
I'm not sure how much all that helps. Maybe someone with a bit of time to spare and a better knowledge of e4 than me (not too difficult) could try running through that tutorial. It doesn't take long...
If it works, then a comparison of the e4xmi files might just indicate where I'm going wrong. I cannot post my e4xmi, because it contains links (that 5 posts resrtriction again). I've up loaded it as a file: 20130304_e4xmi.txt
I'm very grateful for any information anybody can give me.
Meanwhile I'm going to continue beating my brains out trying to solve this. I am living proof that, if you bang your head against a wall for long enough, the wall will crumble... as long as you don't bang it so hard that your head caves in! 
Cheers
Achim
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 Re: Difficulties with tutorial examples [message #1016696 is a reply to message #1016022] |
Thu, 07 March 2013 06:34 |
Achim Schmitz
Messages: 5
Registered: February 2013 |
Junior Member |
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Thanks Dirk, that did help.
The first entry contains a link to a tute by Lars Vogel. I read the list of typical launch problems and tried to understand what was happening in my case.
The big hint was the statement "Make sure that your product includes all required dependencies." Yes, that is a bit vague but I can put this into context for others who might be reading this.
Here's what I did:
1. Right click the product in eclipse
2. Select Run as... > Run configurations
3. Select the Plug-ins tab
4. Click the button labeled "Validate Plug-ins" (bottom right)
5. Eclipse lists the plug-ins it still requires in a pop-up
6. Select the missing plug-ins from the list (unfortunately you'll have to close the pop-up first)
7. Click "Add Required Plug-ins"
8. Click "Apply"
9. Repeat steps 4 - 8 until validation returns the message "No problems found"
10. Re-run the app...
This is not going to cure any and every ill, but it did get me to a point where changes to the app were reflected when it was launched. I still have the afforementioned errors in the error log, but they obviously have nothing to do with the main problem I had. I guess from that point of view my problem is solved.
A couple of points:
- Given my experience (above) it is a good idea to check the checkbox "Validate plug-ins prior to launching" in the run config plug-ins tab ... at least until you're sure there are no more plug-ins required.
- With regard to this forum editor, avoid using the list facility. I tried adding a numbered list but hitting the enter key instead of clicking "Add item" causes everything listed up to that point to be deleted. It happened to me twice!
Hope this information helps others.
Achim
P.S. Is there any difference between "run configuration" and "launch configuration"?
P.P.S. Important: See my next reply as well.
[Updated on: Thu, 07 March 2013 09:12] Report message to a moderator |
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