I am using FME 2013 for comparing geometry and attribute changes between two Shape files, one being more recent than the other. The two Shape files have exactly the same type of geometry and schema (same attributes names and definitions). They also have a lot of attributes (more than 50 I think). I have set up a logic for reporting significant differences in geometry as well as records having at least one attribute value not matching with the corresponding one in the other set. The attribute matching part can be achieved rather easily with a ChangeDetector, Matcher or CRCCalculator. These transformers will report features containing at least one attribute change among those that have been selected in the transformer properties.
Given the great number of attributes I would like to to identify which specific attribute(s) has(have) indeed been modified between the two sets. I don't see an option using the standard transformers mentioned above. I did manage to get something working by using the AttributeExploder followed a bit later by a Matcher and looking for combinations that could not be matched (implying an attribute value change). This generates of course a lot of records and I was wondering if there isn't any easier way, which might work more efficiently on large data files.
Thank you for your suggestions!
Olivier
