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

[Alef A. <al...@jt...>]

I've inserted an issue in JIRA. I'll see what I can do today.

By the way, could somebody create a component for documentation in JIRA?

Alef


-----Original Message-----
From: spr...@li...
[mailto:spr...@li...] On Behalf
Of Mike Cannon-Brookes
Sent: Friday, May 28, 2004 8:46 AM
To: Spring Developer
Subject: [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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