Change dynamical directory on file:inbound-channel-adapter - spring-integration

Question

I'm new with Spring and I'm using Citrus Framework.
I'll try to change, dynamically, the inbound-channel-adapter destination variable. This variable is located in properties file and change all the time.
Currently I'm using an AtomicReference and I change its value in java code
In context.xml :
<bean id="targetDir" class="java.util.concurrent.atomic.AtomicReference">
<constructor-arg value="${output.path.temp}"/>
</bean>
<file:inbound-channel-adapter id="fileInboundAdapter" auto-create-directory="false"
channel="fileChannel" directory="file:#targetDir.get()" auto-startup="false"
filename-pattern="*.xml">
<si:poller cron="0 * * * * ?"/>
</file:inbound-channel-adapter>
And in java file :
SourcePollingChannelAdapter fileInboundAdapter = (SourcePollingChannelAdapter)context.getApplicationContext().getBean("fileInboundAdapter");
if (fileInboundAdapter.isRunning()) {
fileInboundAdapter.stop();
#SuppressWarnings("unchecked")
AtomicReference<String> targetDir = (AtomicReference<String>)
context.getApplicationContext().getBean("targetDir", AtomicReference.class);
targetDir.set(strOutPath[0]+"/"+strOutPath[1]+"/"+strOutPath[2]+"/"+strOutPath[3]+"/");
fileInboundAdapter.start();
}
This solution don't works ... someone have any solutions ?
Thanks a lot.

Answer 1

That's true. Because your AtomicReference doesn't have affect to the target directory.
You do this directory="file:#targetDir.get()". It isn't correct at all, because this String will try to be converted to the File object. If you want to use here a SpEL it should be like this:
directory="#{targetDir.get()}"
without any file: prefix.
Anyway it doesn't help because that SpEL is evaluated only once at applicationContext strtup.
Since you are going to change the directory at runtime you should use FileReadingMessageSource.setDirectory from your service. Something like this:
SourcePollingChannelAdapter fileInboundAdapter = (SourcePollingChannelAdapter)context.getApplicationContext().getBean("fileInboundAdapter");
if (fileInboundAdapter.isRunning())
fileInboundAdapter.stop();
FileReadingMessageSource source = (FileReadingMessageSource) context.getApplicationContext().getBean("fileInboundAdapter.source");
source.setDirectory(new File(strOutPath[0]+"/"+strOutPath[1]+"/"+strOutPath[2]+"/"+strOutPath[3]+"/"));
fileInboundAdapter.start();
}
And get rid of that AtomicReference.
From the start you can use property-placeholder for the directory attribute directly.