[Springframework-developer] Re: Import tag for XML bean definitions

[Chris E. <chr...@co...>]

As my message stated, I think the import tag is a good feature and look 
forward to using it.  It should solve your 3 * 300 problem.

The part I take issue with is putting conditionals and other 
meta-programming into an xml file.  Keep in mind, xml and IoC are 
intended to divorce configuration from the program.  Turning a bean 
configuration file into a bean "script" entirely defeats that purpose 
because essentially you are putting the program into the configuration.

What is the perceived advantage of using

<condition test="foo"> <import name="sometimes.xml"> </condition>

instead of the java equivalent:

if (foo) {
	context = new ClassPathXmlApplicationContext(new String[] {"main.xml", 
"sometimes.xml"});
} else {
	context = new ClassPathXmlApplicationContext(new String[] {"main.xml"});
}

All you would be doing is mixing your configuration with your program.

bryan wrote:
> Chris,
> 
> You must really like keeping 3 *  300 line files in sync with each
> other when just
> 60/70 lines are different in each one ..... 
> 
> I'm not talking about adding #ifdef and #define to the top of your java source
> files here !
> 
> --b
> 
> 
> 
> On Thu, 16 Sep 2004 14:46:45 -0400, Chris Eldredge
> <chr...@co...> wrote:
> 
>>bryan wrote:
>>
>>
>>><beans>
>>><if value="test" equals="test">
>>> <import resource="myImport1.xml"/>
>>></if>
>>
>>This looks an awful lot like meta-programming to me.  This becomes a
>>slippery slope.  IMO, xml bean files should be for configuration, not
>>for scripting.
>>
>>The <import>, however, is something that I am looking forward to using
>>on my current project.
>>
>>Chris.
>>
>>
>>
>>
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> 
> 
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