Singleton Error

[ec list]

I am using the current ColdSpring Alpha and occasionally I experience
an error. I am a bit of a newbie, so its probably due to something I
have done with my code, but I wanted to run this past the group to see
if there are any ideas:

Message key [SINGLETON] doesn't exist in struct
(keys:functions,synchronized,persistent,extends,name,path,hint,properties,accessors,type,output,fullname)

Stacktrace The Error Occurred in
C:\RailoExpress\webroot\coldspring\core\reflect\Class.cfc: line 42
40: //have to do this stupid juggling because CF8 'can't find
'setLength() on a Builder'
41: var builder = 0;
42: var reflectionService =
getComponentMetaData("coldspring.core.reflect.ReflectionService").singleton.instance;
43:
44: //builder.setLength(builder.lastIndexOf(".")); << CF8 fails on
this because it can't resolve Java Methods. Grrr.

Thank you

[Mark Mandel]

Which version of Railo see you using?

Mark

Sent from my mobile doohickey.

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[ERON Cohen]

Hi,

I am using railo express 3.3 (jetty version, but it happens with tomcat too)

Thank you for the help.

[Mark Mandel]

I think there was a a patch in the latest Railo that has a regression in regards to storing things in metadata, as I'm seeing this issue locally as well, but not on ACF.

I will have to investigate and see what the bug is.

Mark

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[Chris Blackwell]

I see this too on Railo 4.0.1. I thought it was my application code,  but apparently not.

[Mark Mandel]

I find if you keep refreshing, it ends up going away, but obviously, that's not practical.

Sent from my mobile doohickey.

[ERON Cohen]

Mark,

Thanks again for your help on this.  Do you think the problem might be related to using it as a factory for ORM objects?  

Should I go back to using the older released version of Coldspring?  Any other advice and ideas welcome!

[Mark Mandel]

So I just tried this on  3.3.4.003 , the stable release, and all worked perfectly.

So looks like it's a weird bug in Railo. Talking to the Railo team about it, not sure what is going on there.

https://groups.google.com/forum/?fromgroups=#!topic/railo/MC4cQwZ7vfE

But quick answer - roll back to stable.

Mark

[ERON Cohen]

Mark,

Thanks again for trying to sort this out.  I want to note that for me, reloading does not avert the problem--even reloading multiple times.

Eron

[Mark Mandel]

Which version are you using? 

 3.3.4.003?

Mark

[ERON Cohen]

Yes, that's the correct version I have.

Thanks again,

Eron

[Mark Mandel]

That's weird - works fine for me.

This is even after a server restart / application restart?

Mark

[ERON Cohen]

If I restart Railo, then it works again.  But just refreshing the browser doesn't make any difference.

Eron

[Mark Mandel]

OIC - you get it occasionally.

The issue with Railo later versions is that is happens occasionally.

If you get the error, just re-init your app, it should recreate anything that is missing. You shouldn't have to restart the whole server (unless there are further bugs in Railo, but I've not seen them in my unit tests).

Mark

[Mark Mandel]

That should have read

The issue with Railo later versions is that is happens always.

On Tue, Sep 11, 2012 at 10:01 AM, Mark Mandel <mark....@gmail.com> wrote:

The issue with Railo later versions is that is happens occasionally.

[ERON Cohen]

Yeah, that's correct.  It works for a while then it comes up...I guess I could do "try/catch" on that code and then reinitialize the app, but really its something I have to resolve because the reset causes people to get logged out etc, the way we have it configured right now.  I am going to switch to the stable version of ColdSpring asap.

Eron

[Mark Mandel]

So are you saying that on a production app you are getting the error?

I've only ever seen it very rarely on ACF, and then only in development.

Mark

[ERON Cohen]

Its actually more of a beta, but yeah.  I have only tried this app on Railo so far.  Its kind of unpredictable when its going to occur.  Sometimes the app works for hours without ever seeing that Singleton error, and sometimes it only lasts for a few minutes.  I don't really know what it could be, maybe some sort of issue with concurrent users.

Eron

[Mark Mandel]

You aren't reloading CS on every request are you?

Mark