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Java class extends WCMUse compile error (Only a type can be imported com.adobe.sightly.WCMUse resolves to a pakcage)

Forum|Forum|9 years ago
April 11, 2016
15 replies
5584 views

Hi all,

I wrote a Java class which extends WCMUse in AEM6. It compiles fine on AEM6. However, when I move my code to AEM5.6.1, and compile the code, I got the following error message:

"Only a type can be imported com.adobe.cq.sightly.WCMUse resolves to a package"

"WCMUse cannot be resolved to a type"

I thought maybe my local instance of AEM 5.6.1 doesn't have the necessary service pack. So I installed both security pack 1 and service pack 2 on my local instance of AEM 5.6.1. Restart the server, and I still got the same compiler error when I click Tools > Compile within crx/de in AEM 5.6.1.

Please let me know if you know how to resolve this issue.

Thanks,

Kai

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Best answer by edubey

These are sightly APIs which were introduced from 6.x onwards.

Although there is feature pack of sightly available in 5.6.1 but that is just to see sightly preview and wont support sightly apis completely

To get code working you need to use AEM 6+, Check release notes here https://docs.adobe.com/docs/en/aem/6-0/release-notes.html

edubeyAccepted solution

These are sightly APIs which were introduced from 6.x onwards.

Although there is feature pack of sightly available in 5.6.1 but that is just to see sightly preview and wont support sightly apis completely

To get code working you need to use AEM 6+, Check release notes here https://docs.adobe.com/docs/en/aem/6-0/release-notes.html

kai6noviceAuthor

If there is no way to use WCMUse in AEM5.6.1, what is the recommended way to implement custom code in AEM 5.6.1? Do I re-implement my Java code in JSP? Or is there other way to trigger Java code in AEM 5.6.1?

smacdonald2008

You do not need Sightly to invoke a backend Java Service from a component's JSP. WCMUse is only used for Sightly, not for Java services that can be invoked from JSP logic.

Read this article, it will give you the basics:

com.adobe.cq.KeyService keyService = sling.getService(com.adobe.cq.KeyService.class);
keyService.setKey(10) ;

See:

https://helpx.adobe.com/experience-manager/using/first-osgi.html

kai6noviceAuthor

The reason why I create a class that extends WCMUse not only because I want to trigger the Java class via sightly, but also because WCMUse allow me to use getPageManager() and getResourceResolver(), so the Java code can interact with Node in AEM. How do I do that without extending WCMUse in AEM 5.6.1?

Thanks,

Kai

kai6noviceAuthor

edubey wrote...

These are sightly APIs which were introduced from 6.x onwards.

Although there is feature pack of sightly available in 5.6.1 but that is just to see sightly preview and wont support sightly apis completely

To get code working you need to use AEM 6+, Check release notes here https://docs.adobe.com/docs/en/aem/6-0/release-notes.html