topic Re: Call external class by javascript in rules of folder in Alfresco Forum

Call external class by javascript in rules of folder

marcog — Tue, 12 Dec 2017 18:54:55 GMT

I need to call an external class when an update is made to the document in the folder. The rule will execute a javascript.I would like to know or read about how to make this class call by javascript.If it is possible?Can someone help me?

Re: Call external class by javascript in rules of folder

jpotts — Tue, 12 Dec 2017 19:41:09 GMT

Folder rules can invoke Java classes that are instances of ActionExecuterAbstractBase. That means you can write your own Java class and make a call to any other class on the classpath.

Folder rules can also execute JavaScript. That's because there is a Java class that extends ActionExecuterAbstractBase that knows how to run JavaScript.

So, your first option is to write a Java class, extend ActionExecuterBase, and call your class from there.

But you said you want to call JavaScript and your JavaScript is going to call a class. That's kind of "the long way around" but it's perfectly fine. In that case, you'll need to write a Java class that is a scope processor extension. Basically it just exposes your Java class to JavaScript. That class can call the other Java class that is on the classpath, and because it is a scope processor extension, it will be exposed as a root variable in Alfresco's server-side JavaScript.

All that's left to do at that point is set up your folder rule, use the "Execute Script" action, and point to your server-side JavaScript that makes the call to your new root variable.

Re: Call external class by javascript in rules of folder

marcog — Wed, 13 Dec 2017 11:43:14 GMT

Many thanks Jeff.

Would you have any examples or reference books for me to take as a basis?
For I am extremely new to this scenario.

Thanks

Re: Call external class by javascript in rules of folder

jpotts — Wed, 13 Dec 2017 19:37:37 GMT

My actions tutorial shows how to write an action, but I do not show how to do the processor extension.

However, the ACL Templates add-on that I maintain on behalf of one of my clients has an example of this. The AclTemplateServiceScopedObject class exposes the Java-based ACL Template Service to JavaScript.

Re: Call external class by javascript in rules of folder

marcog — Thu, 14 Dec 2017 12:32:09 GMT

Thanks Jeff.

Very helpful and helped a lot.