Technically, what you want to do is possible assuming that CompB doesn't
expose CompA v1 to CompC. From the sounds of it, you've packaged your
bundles incorrectly. Don't embed the Person package into your bundles,
package them as separate bundles and them use Import-Package in the
client bundles to access them. You might want to start with some
introductory OSGi tutorials to understand the basics.
-> richard
On 4/14/10 6:53, Yair Ogen wrote:
Hi,
I am a newbie. I've created dummy projects to test this out.
What I am trying to achieve is as follows:
CompA version 1.0.0 defines class Person that has 2 properties: name,
lastName
CompA version 1.0.1 defines class Person that has 2 properties: name,
myLastName
CompB version 1.0.0 calls API on person compiled with CompA version 1.0.0.
CompC version 1.0.0 calls API on person compiled with CompA version 1.0.1.
Additionally calls API on CompB.
So, CompA, both versions, are not dependent on anything.
CompB is dependant on CompA version *1.0.0*.
CompC is dependant on CompB version 1.0.0 and CompA version *1.0.1*.
When I read about OSGi I thought that I should be able to see that the API
used directly between C and A will activate Person from A version 1.0.1, but
the API called from C to B to A will activate the person from A version
1.0.0.
This is not the case. Pure B API activate the "right" person.
Person used from C (regardless of the origin - API in C or API in B)
activates the same Person - 1.0.1.
When investigating I saw that the person class was embedded in B and in C,
so of course they can only work with one class at a time.
My question is - isn't there a non embedded approach, where both A versions
jars are in the classpath and the container will pick up the correct
dependency on the fly?
This must work for me, because this is the heart of what I need from OSGi -
Manage multiple version of the same artifacts in a single jvm...
Regards,
Yair
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