bundle start order

[chandraprabha]

Hi All,

I have have two application and each app has 4 bundles.

model

business

se

bc

and they are dependent on each other e.g business is dependent on model

and also one application is dependent on other business.

Please let me know where  i can specify their order of start ?

Thanks

[ffang]

Hi,

Actually you can't specify start order for bundles, though you can specify start-level(lower value means start it early) for each bundle, start-level could help here but it

can't guarantee that one bundle fully started before another. The only way I know can guarantee one bundle(A) fully started before another one(bundleB) is  that bundle A export an OSGi service and bundle B refer this OSGi service.

And your logic depend on bundle start order isn't a good practice in OSGi world, you should avoid it.

Freeman

[rogelio_sevilla1]

According to mr. Freeman on this thread,

http://fusesource.com/forums/message.jspa?messageID=6820

Requiring a start order of your bundles is bad practice on the OSGi world.

Although with "start order" I don't know if you mean "initialization order" or "resolution order" with your question.

If you meant resolution order, then,  i believe that using the <import-package> or the <required-bundle> tag within the org.apache.felix.maven-bundle-plugin could help you to ensure that the packages you need are resolved  before trying to resolve and start a bundle.

Hope that helps.

[chandraprabha]

Thanks for response .

Can you please tell me how i can set the start-level for the bundle.

[chandraprabha]

I got it thanks

[ffang]

Hi,

Put your bundle in a feature, and you can specify start-level attribute for the feature or a certain  bundle there.

Freeman