I have some content within an excel file that i also want as Metadata. When a value in the content changes I want the Metadata to update too. I have attempted to do this in a java behavior and it works using the onUpdateProperties policy. The problem with this is that it runs when any property is updated.
To solve this I tried using the onContentUpdated policy but when I try to get a content reader on the node so I can read the value in the content stream null is returned, a content reader isn't returned.
Is there a different policy I should use or is there a better solution to update Metadata based on content data. Thanks