Bundle dependency

Question

Hi All,1] What exactly does the term "Bundle dependency" mean?2] How is Bundle dependency resolved.Any thoughts/snippet of code would be helpful.

Runal_Trivedi · Accepted Answer

Bundle Dependency:Bundle dependency are the other bundles that the bundle you are installing depends on.https://helpx.adobe.com/experience-manager/using/developing-aem-osgi-bundles-jackrabbit.htmlBundle Dependency Resolutions:Resolutions of bundle dependencies is taken care by OSGI Installer. Basically as soon as you install a bundle, it checks all the bundle that is depends on (the bundle you are installing) are already present in your OSGI Container or not, if all the required bundles are present then only it will activate the bundle you are installing. Refer to following link for more details: https://sling.apache.org/documentation/bundles/osgi-installer.htmlSome more links:http://blog.christianposta.com/osgi/understanding-how-osgi-bundles-get-resolved-part-i/- Runal

smacdonald2008 · Answer

Assume you have bundleA in AEM. Next assume that this bundle has a dependency on a Java API - for example -- say org.json.simple.JSONObject.

You can place this JSON API in another bundle in AEM - say bundleB. Now bundleA has a dependency on bundleB.

In this use case - you would need to deploy bundleB first and place it into an active state. Then you can deploy bundleA.

To see this in action - read this community article:

https://helpx.adobe.com/experience-manager/using/custom-sling-servlets.html

You deploy 2 bundles in this article.

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