Earlier today, I was investigating a problem where a particular JSP page in an ATG Commerce application failed rendering midway through. In the ATG application log, the following stack trace appeared:
<Jul 12, 2013 1:37:36 PM EDT> <Error> <HTTP> <WL-101020> <[ServletContext@1926834063[app:myApp-unpacked module:app path:/root spec-version:2.5]] Servlet failed with Exception
javax.el.PropertyNotFoundException: The class 'atg.adapter.gsa.GSAItem' does not have the property 'name'.
The problem turned out to be that an upstream JSP that was passing an object parameter into the page I was looking at had had a bug introduced where it started passing an object of type RepositoryItem, instead of the expected type. The error occurred when my JSP code assumed that the parameter object was of a particular type, and attempted to call a method on the object that didn’t exist on the RepositoryItem object.