The properties are at http://wurfl.sourceforge.net/help_doc.php, and the hierarchy is the way the WURFL builds its devices on top of one another, like the device apple_iphone_ver1 get's it's brand name 'Apple' from its parent device, generic_apple.
It's not the GPL OpenDDR API that was in question: https://github.com/OpenDDR-org/OpenDDR-Java, but the device database, which was never GPL to begin with: https://github.com/OpenDDR-org/OpenDDR-Resources
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The properties are at http://wurfl.sourceforge.net/help_doc.php, and the hierarchy is the way the WURFL builds its devices on top of one another, like the device apple_iphone_ver1 get's it's brand name 'Apple' from its parent device, generic_apple.
It's not a collection of facts unless you remove all the property names, hierarchy and subjective properties from the data.
It's not the GPL OpenDDR API that was in question: https://github.com/OpenDDR-org/OpenDDR-Java, but the device database, which was never GPL to begin with: https://github.com/OpenDDR-org/OpenDDR-Resources