how do you put an osgi config admin property in a service filter?

[jasonnh]

Hi,

I have a service reference declared in a blueprint xml file along the lines of:

.....

<reference id="myname" interface="com.mycompany.MyInterface" filter="(something.xyz=$)" availability="optional"/> This does not work, i.e. it tries to match $ literally.  I have tried using other prefix and suffixes and that does not help.

Does anybody have any ideas on how to do this?

Thanks.

[ffang]

Hi,

No, it isn't allowed. Placholders in blueprint only works as metadata, that said, only element which actually is underlying  org.osgi.service.blueprint.reflect.ValueMetadata could be substituted during runtime. Those metadata elements generally are some thing like value="xxx" in xml.

Please see a related discussion here[1]

http://servicemix.396122.n5.nabble.com/Property-in-OSGi-service-reference-filter-attribute-td5713964.html

Freeman

[jasonnh]

Many thanks Freeman.

The link you provided seems to give a workaround of using a custom NamespaceHandler.

I tried that but need to be able to import the org.osgi.service.blueprint.reflect package.

That is not exported in the preinstalled bundle:

org.apache.aries.blueprint.core-1.0.1.fuse-71-047

It is exported in:

org.apache.aries.blueprint-1.0.1.fuse-71-047

But that causes an exception when installed manually in to my container - they look like similar bundles.

Does anybody know the relationship between those bundles?

If not it suggests that custom NamespaceHandlers are possible in ServiceMix but not fuse.

Thanks again.

[ffang]

Hi,

IIRC, when blueprint upgrade to 1.0, the old org.apache.aries.blueprint split into org.apache.aries.blueprint.core and org.apache.aries.blueprint.api

And  package org.osgi.service.blueprint.reflect exported by org.apache.aries.blueprint.api bundle 1.0.1.fuse-71-047 now, which get installed by default when you start FUSE ESB 7.1

Freeman

[jasonnh]

Thanks again.

[jasonnh]

Actually, I got the wrong package in my previous post.  To do the NamespaceHandler approach I also need:

org/apache/aries/blueprint/reflect/ReferenceMetadataImpl

which is in FUSE by default in org.apache.aries.blueprint.core bundle but is not exported.