This is a logging API for Ada. It's not a port of log4j. This library seeks to be ultra-flexible whereas log4j was designed to be efficient. The design is essentially a graph of message stream arcs and message processing nodes.
Ada to GXL is a factextractor translating from Ada Source code to the Graph eXchange Language (http://www.gupro.de/GXL/) to support reengineering. The Ada ASIS library and the GNAT compiler will be used for the translation.