Forum LAMS for Tech-Heads - General Forum: Exporting bug (?)

By: Daniel Schneider

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I can confirm an exporting bug. One of my students reported it. I then tried with 2 random sequences and also got it. The error message we get seems to be different

Important: I applied the patch
http://lamscommunity.org/2.3/stable/patches/lams-tool-laasse10.zip

Can't tell if export worked before that. It definitely did a year ago :)

Some trace attached.

Posted by Daniel Schneider

By: Andrey Balan

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Hi Daniel,

The error you've got looks like weirdos to me o_O
2 possible explanations:

1. One of libraries that Lams uses just got broken (i.e. batik-1.7.jar).

It's almost impossible but just in case can you please check that theory?
Please, unzip the file attached and compare it with the batik-1.7.jar within lams.ear (${Lams_EAR_Directory}\batik-1.7.jar)
they should be identical

2. application.xml got corrupted.

go to ${Lams_EAR_Directory}\META-INF\application.xml
and try to search for batik-1.7.jar in that .xml file.
it should be listed inside

thanks,

Posted by Andrey Balan

By: Daniel Schneider

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Hi Andrey,

Export works again.

your hypothesis were wrong
(1) application.xml is ok
grep batik /usr/local/jboss-4.0.2/server/default/deploy/lams.ear/META-INF/application.xml
_java_ batik-1.7.jar_/java_

(java tag modified "_" to pass your filter here)

(2) batik-1.7.jar is ok
diff /usr/local/jboss-4.0.2/server/default/deploy/lams.ear/batik-1.7.jar ~schneide/tmp/batik-1.7.jar
.... no difference ....

And now MAGIC. I did the Microsoft Windows trick, i.e. Stopping/starting LAMS.

Exporting works now ... sorry for the trouble. I actually thought of restarting the server first, but then I have seen Spyros' message and forgot to do it :(

Nevertheless I hate when it computers just decay. IMHO nothing was changed in the system and the machine doesn't complain about anything I could see... but I'll ask tomorrow.

Posted by Daniel Schneider

By: Ernie Ghiglione

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Hi Spyros,

Andrey is checking into this now. We'll get back to you shortly.

Thanks,

Ernie

Posted by Ernie Ghiglione

By: Spyros Papadakis

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Hi Ernie,

You are able to preview and repeat these errors by yourself.

You will find the details in my e-mail.

Thanks

Spyros

Posted by Spyros Papadakis

By: Andrey Balan

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Hey guys,

It looks like 2 different issues (based on exceptions being thrown: org.springframework.transaction.UnexpectedRollbackException in 1st case and java.lang.NoClassDefFoundError in 2nd one).
But I coudn't replicate any of them.
Can you please describe sequence of actions how to get the errors?

Thank you,

Posted by Andrey Balan

By: Spyros Papadakis

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I received also an error message

java.lang.NullPointerException: Unknown runtime exception!

when I am trying to open an Image Gallery Activity from monitor - learner.

Posted by Spyros Papadakis

By: Ernie Ghiglione

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Hi Spyros,

I think I know where the problem might be, at least with the Pikis-Pika-1 sequence.

It seems that some of the content uploaded to the sequences can't be found in the disk. So when I open the Share Resource activity, I can see that there's an IMS Content Package but when I try to test it, it doesn't seem that LAMS can find the resources/files that were meant to be imported with it.

This is what is affecting the export.

So what I did was open the pikis-pika1 sequence and then saved it as pikas2. Then went to the Share Resources activity and removed the IMS Content Package, save the activity, save the sequence and I was able to export the sequences no problems:

So just add the IMS CP again to the Share resources activity and that should do.

Thanks,

Ernie

Posted by Ernie Ghiglione

By: Spyros Papadakis

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Hi Ernie,

That's true.
If I remeber correct beacause I helped this teacher one year ago we have import an imc-cp (from eXe Editor) packages there.

The questions is why LAMS server looses it and if we are able to recover it.

Please try and the other sequence to see a similar problem there.


Thanks

Spyros

Posted by Spyros Papadakis

By: Ernie Ghiglione

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Hi Spyros,

Can you login as sysadmin in your server, go to the sysadmin menu, Edit configuration settings and in there, can you check the "Content Repository Directory" variable? What does it say?

Thanks,

Ernie

Posted by Ernie Ghiglione

By: Spyros Papadakis

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LAMS 2.3.5 Windows server (updated from 2.1, 2.2. 2.3, 2.3.1, 2.3.2, 2.3.3, 2.3.4)

Mozila Firefox or IE

Author - File - Open

Save - Export

org.springframework.transaction.UnexpectedRollbackException in 1st case and java.lang.NoClassDefFoundError

Posted by Spyros Papadakis