Alfresco provides an extension mechanism that keeps customizations separate from the files that are a part of the Alfresco distribution. It is important to keep your customizations separate from Alfresco's in order to help streamline future upgrades and to simplify troubleshooting.
When you implement Alfresco, you will inevitably identify things you want to tweak and potentially define an entirely new functionality that you would like to add to the platform. The approach you will use to extend Alfresco with your own customizations is the same you use when extending other Spring or JSF-based web applications. You will extend the existing or write new Spring beans, JSF-managed beans, Java classes, JSPs, tag libraries, and other files. The custom files are deployed as a part of the Alfresco web application. The trick is to override or extend Alfresco with your own code, while keeping those extensions and customizations separate from the...