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...I made it in order to extract data from big XML files and gather them in files more easily opened with a spreadsheet because I didn't find anything adapted to my needs over the Internet when I needed to (Java + truly generic + self-contained algorithm + Unix like command line options + efficiency).
It is packaged as an auto executable Jar for convenient command line execution but might as well be interfaced directly by a Java class as part of a broader [yet non commercial] software.
It handles attributes, repeated elements, and so on, and produces results which level up with what spreadsheets generate when they import native XML (at least in its most extensive execution mode).
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The metric project supplies, via the web, educational materials in mathematics and mathematics-based subjects. There are interactive explorations of mathematical ideas, self-test exercises, tools and tutorials.
DOMinator is an XML (de)serialization package for Java objects. The resulting XML files are self-describing and self contained. i.e. no external schemas/definition files required. Extensibility is provided through the use of custom class handlers.