Re: [configuration] Interpolation over several files, commons config 1.4

[David J. M. Karlsen]

Oliver Heger skrev:

David J. M. Karlsen wrote:
 

Hi!
I'm can use interpolation within a property file with success.
But I'd like to be able to spread this over several files.

F.ex:

prop1.properties:
var1=somevalue1
var2=somevalue2


prop2.properties
myvar1=${var1}
myvar2=${var2}

so that the resulting java.util.Properties would contain these values:
var1=somevalue1
var2=somevalue2
myvar1=somevalue1
myvar2=somevalue2


I can't get this to work - even with a CompoundConfiguration.

Any pointers?

TIA,
David

   

It would be helpful if you could provide some code fragments
demonstrating what you are doing and how you are creating a
java.util.Properties object. So I am not sure what is going wrong.
 

See the attached spring-context which uses spring-modules to create a 
org.apache.commons.configuration.CompositeConfiguration consisting of 
two properties files, prop1 and prop2.

Interpolation in CombinedConfiguration should work over multiple
configuration sources. But because I don't know your actual use case I
can't say whether this helps you.

Did you have a look at the include directives for
PropertiesConfiguration [1]? Maybe this is an option?
 

That could be a way to go - but I'd prefer doing this with the 
spring-factory bean combining the files as shown

TIA,
David
<?xml version="1.0" encoding="ISO-8859-1"?>
<beans xmlns="http://www.springframework.org/schema/beans";
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd";>

	<bean id="configFactory" class="org.springmodules.commons.configuration.CommonsConfigurationFactoryBean">
		<property name="configurations">
			<list>
				<bean class="org.apache.commons.configuration.CompositeConfiguration">
					<constructor-arg>
						<list>
							<bean class="org.apache.commons.configuration.PropertiesConfiguration">
								<constructor-arg type="java.lang.String" value="prop1.properties" />
							</bean>
							<bean class="org.apache.commons.configuration.PropertiesConfiguration">
								<constructor-arg type="java.lang.String" value="prop2.properties" />
							</bean>									
						</list>
					</constructor-arg>
				</bean>
			</list>
		</property>
	</bean>
	
	<bean id="properties" factory-bean="&amp;configFactory" factory-method="getConfiguration"/>

</beans>prop2=value2
myalias=${placeholder1}
${myvar}=123
place=${prop2}prop1=value1
placeholder1=placevalue1
place2=${prop2}
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