Dynamic Reference Been via Properties Struct

[Gersting]

Hey gang,
I have a component that is designed to have a "hot-swappable"
subsystem (a caching plugin that can go between Memcached, EHCache,
etc). Ideally, I'd like to be able to configure this without having
to create multiple ColdSpring XML files. However, when I try to pass
in a property, ColdSpring appears to ignore it and process it as a
literal, ie:

<constructor-arg name="oCacheEngine">
<ref bean="${cacheEngine}" />
</constructor-arg>

Results in the exception:

"There is no bean registered with the factory with the id $
{cacheEngine}"

I'm assuming this is WAI?

[Brian Kotek]

I'm not sure what "WAI" means, but ColdSpring won't let you define variables for bean defs like that, just for things like property values (http://www.coldspringframework.org/coldspring/examples/quickstart/index.cfm?page=dynamicproperties). However, I wrote an extension library that allows for these sort of dynamic values: http://coldspringutils.riaforge.org/

Hope that helps,

Brian

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