Hello,
I am using Blueprint / Managed OpenJPA in a scenario based on the blog
sample. I need a way to fetch a Blueprint service from a point in the
code that starts with no reference to anything Blueprint related. As I
understand it, this should be possible using something that looks a bit
like this:
InitialContext ic = new InitialContext();
Object s = ic.lookup("osgi:service/" +
ThingPersistenceService.class.getName());
Where ThingPersistenceService is the interface my service is implementing.
However when I try this code, I get this unhelpful exception:
javax.naming.NameNotFoundException:
osgi:service/alex.mjpa.api.persistence.ThingPersistenceService
at
org.apache.aries.jndi.url.ServiceRegistryContext.lookup(ServiceRegistryContext.java:110)
at
org.apache.aries.jndi.url.ServiceRegistryContext.lookup(ServiceRegistryContext.java:141)
at org.apache.aries.jndi.DelegateContext.lookup(DelegateContext.java:148)
at javax.naming.InitialContext.lookup(InitialContext.java:455)
at alex.mjpa.ThingCommandProvider.getThingPS(ThingCommandProvider.java:22)
...
I know the service is registered in the OSGi environment because typing
"services" at the OSGi console includes this line:
{alex.mjpa.api.persistence.ThingPersistenceService}={osgi.service.blueprint.compname=persistenceImpl,
service.id=51}
Registered by bundle: alex.mjpa.persistence.jpa_1.0.0.qualifier [35]
No bundles using service.
The service is registered in Blueprint using the following blueprint.xml:
<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns:tx="http://aries.apache.org/xmlns/transactions/v1.0.0";
xmlns:jpa="http://aries.apache.org/xmlns/jpa/v1.0.0";
default-activation="lazy" >
<bean id="persistenceImpl"
class="alex.mjpa.persistence.jpa.ThingPersistenceServiceImpl" >
<tx:transaction method="*" value="Required" />
<jpa:context property="entityManager"
unitname="thingExample" />
</bean>
<service ref="persistenceImpl"
interface="alex.mjpa.api.persistence.ThingPersistenceService" >
</service>
</blueprint>
I feel that I am missing something obvious here, but after an hour of
experimentation I am still not making any progress. Can anyone here help
me solve this? If I have not provided enough information, please let me
know.
thanks in advance,
alex
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