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From Zhemzhitsky Sergey <>
Subject Endpoint and Producer isSingleton behavior in the OSGi
Date Thu, 25 Oct 2012 08:18:59 GMT
Hello camel gurus,

I just need some clarification about how DefaultEndpoint, DefaultProducer behave depends on
whether their isSingleton method returns true or false.

My understanding is the follosing:

1.       If DefaultEndpoint.isSingleton() returns true the same instance of the endpoint will
be reused across all the camel contexts, and in case of OSGi this mean that the same endpoint
instance will be reused across all the bundles that contain some camel functionality.

2.       If DefaultEndpoint.isSingleton() returns false then for each camel context a new
instance of the endpoint is created and in the OSGi the new instance of the endpoint will
be created for each separate bundle that contains a camel context.

3.       If DefaultProducer.isSingleton() returns true then the same instance of the producer,
i.e., will be used every time not depending on the endpoint uri, i.e. for the following producers
<to uri=”comp:producer?param1=val1”/> and <to uri=”comp:producer?param1=val1&param2=val2”/>
will be used the same instance of the producer?

4.       If DefaultProducer.isSingleton() returns false then for the different endpoint URIs
will be returned different instances of producer.

So summarizing all the points above if DefaultEndpoint.isSingleton() is true and DefaultProducer.isSingleton()
in the OSGi environment then the producers will be shared across all the camel contexts located
in all the OSGi bundles, right?

Best Regards,

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