I can't imagine code like that working in this application since the files can be quite large. Here is an outline of how the script works:

• Prepare several DB SELECT statement handles that will be used inside the loop to get useful information.
• Create tied hashes for caching that information so that I don't have to hit the database everytime I need the id of some frequenly used term.
• Create an IO object that will parse the file line by line and hand back information about the line in an OO way.
• Loop using the IO object's next_feature method. Do lots of bookkeeping using the tied hashes. Write output to several (about 10) files that will later be loaded into postgres using COPY FROM STDIN.
• Close open files, destroy DB statement handles, and load data into database.

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