[Springframework-developer] Reworked Velocity and FreeMarker support

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

Darren, everybody,
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I've significantly reworked out Velocity and FreeMarker support this =
weekend: They are as analogous as possible now, and a bit more powerful. =
For example, the Velocity resource loader respectively FreeMarker =
template loader support is far more sophisticated now, being able to =
resolve classpath resources and resources in WARs that are not expanded.
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One thing that I've removed is the default config location =
"/WEB-INF/velocity.properties". This is not something we do not =
recommend, and the fallback was somewhat awkward (just if none of the =
other properties was set, not even "resourceLoaderPath"). I've recently =
removed such a fallback from LocalSessionFactoryBean too. If anyone =
wants to use a separate config file, a custom "configLocation" value is =
the way to go.
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FreemarkerConfigurationFactory and FreemarkerView are implemented in a =
somewhat different way now. There were a couple of synchronization =
issues before: A FreeMarker Configuration object is *not* synchronized, =
so we must not use the default Configuration instance for multiple =
factories, and we must not modify a Configuration instance in =
FreemarkerView objects. All of the shared setup happens in =
FreemarkerConfigurationFactory now.
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FreemarkerConfigurationFactory has a "templateLoaderPath" property now, =
analogous to VelocityEngineFactory's "resourceLoaderPath". =
FreemarkerView specifies the URL within that path, just like =
VelocityView. In contrast to VelocityView, it does not offer to cache =
the template in the View object, as we always need to render the =
FreeMarker template for the current locale (FreeMarker expressions are =
locale-aware).
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Juergen
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