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I need to write a jdbc compliant driver wrapper whose purpose is to log all SQL statements that modify data. What is the easiest way to differentiate those statements that modify data from those that only read data? I guess that only way is to parse SQL code on the fly, any libraries that can do that?
You could probably find some full blown sql parsers such as this one, but if your wrapper will intercept only single statements then you might (not enough detail) consider SELECT statements as read only and everything else as statements that modify data.