topic Re: How to override Java class? in Alfresco Forum

How to override ActivitiesFeed subsystem Java class?

upforsin — Sat, 07 Dec 2019 23:40:54 GMT

Hello,

I want to change a bit the FeedNotifier. To achieve it I have to add a few lines of code to FeedTaskProcessor.java.

How Can I override this file?

I'm using dockerized Alfresco 6.1.2 and I tried to create a "FeedTaskProcessor" class in "org.alfresco.repo.activities.feed" package in the "src/main/java" path in the my-project-platform project. But it does not work.

Re: How to override Java class?

narkuss — Sun, 08 Dec 2019 08:50:29 GMT

There should be a spring bean which declares this class in the jar artifact. You should declare this bean in your project, and subsitute their class implementation with your own modified class.

Re: How to override Java class?

upforsin — Sun, 08 Dec 2019 10:27:26 GMT

Thank you. There is indeed a file called activities-feed-context.xml which includes this bean of my interest. But where should I put modified version of this file?

Originally it is in the "alfresco-repository/src/main/resources/alfresco/subsystems/ActivitiesFeed/default/" path, should I put it in the "my-project-platform/src/main/resources/alfresco/subsystems/ActivitiesFeed/default/" folder or maybe should I use the "extension" directory and put it in the "my-project-platform/src/main/resources/extension/alfresco/subsystems/ActivitiesFeed/default/" or maybe with other Spring beans in the "my-project-platform/src/main/resources/alfresco/module/my-project-platform/context" ?

Sorry for that trivial question but I'm really lost with those paths

EDIT. I tried to put it in the "my-project-platform/src/main/resources/alfresco/extension/subsystems/ActivitiesFeed/default/activities-feed-context.xml" but it does not work...

I created my own LocalFeedTaskProcessor, LocalFeedGenerator and FeedGenerator classes and I replaced their paths in the bean's class attribute inside the activities-feed-context.xml. Why it does not work?

Re: How to override Java class?

narkuss — Sun, 08 Dec 2019 11:34:29 GMT

In first place I thought to override only the affected beans, no the entire context file, in your project's bootstrap-context.xml file.

But being a subsystem's bean, you have to override the route to the original context file (that is, my-project-platform/src/main/resources/alfresco/subsystems/ActivitiesFeed/default/), as extensions directory does not work, although I think it should be the place to override existing subsystem context files. I just checked a project where we override ooo subsystem context files, and we did not use extensions directory.

I don't know exactly which is the best practice for overriding subsystem's beans, the big ones of this forum could help you more than me at this, and I would be interested in understanding that too.

Re: How to override Java class?

upforsin — Sun, 08 Dec 2019 15:29:40 GMT

Thank you, it's working now ❤️

@narkuss wrote:
I don't know exactly which is the best practice for overriding subsystem's beans, the big ones of this forum could help you more than me at this, and I would be interested in understanding that too.

I would also really appreciate a short guide on this subject

Re: How to override Java class?

upforsin — Tue, 26 Oct 2021 09:55:16 GMT

Previous sollution does not seem to be working anymore...

However, when I create a

src/main/resources/alfresco/extension/subsystems/ActivitiesFeed/default/default/custom-activities-feed-context.xml

file, it works (is it a deprecated method?). There I can override only some beans, I do not have to override them all.

@resplin mentioned also 7years ago something about custom-activities-context.xml file but it does not have acess to the subsystem's beans.

I find it really sad that it is documented nowhere.