Re: [Springframework-developer] Strange 'double' singleton bug

[<jue...@we...>]

Mike,
=20
Your approach seems to be perfectly OK. I've just tried to reproduce =
your issue but wasn't able to: I always get a single instance, no matter =
if implementing ApplicationListener or not. Could you double-check the =
effect, and possibly send a minimal test case that reproduces the =
problem?
=20
Juergen
=20

________________________________

Von: spr...@li... im Auftrag =
von Mike Cannon-Brookes
Gesendet: Fr 28.05.2004 08:39
An: Spring Developer
Betreff: [Springframework-developer] Strange 'double' singleton bug



I'm not sure if this is a bug or not, it's certainly strange behaviour.

We had a singleton bean that was operating normally, but when we make
it implement ApplicationListener - we get _two_ instances of it
created. (Tested by simply putting a debug point in the constructor -
two separate beans are created)

Here's the config snippet:

    <bean id=3D"macroManager"
class=3D"com.atlassian.renderer.macro.DefaultMacroManager">
        <constructor-arg>
            <ref local=3D"macroStateStore"/>
        </constructor-arg>
        <constructor-arg>
            <list>
                <ref local=3D"beanMacroLoader"/>
                <ref local=3D"classpathMacroLoader"/>
            </list>
        </constructor-arg>
    </bean>

Is this a known bug, a feature or am I not meant to use
ApplicationListener this way? (if it's a bug it's quite serious I'd
say)

I want to do it this way because another part of Confluence fires an
event to say that all setup has finished - and I want this bean to
listen for that event and further initialize itself.

I just guessed that in Spring I would just need to implement the
ApplicationListener interface and listen for events - if I need to do
anything else, let me know :)

Cheers,
Mike


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