P5-library-callnumber-lc

Jul 20, 2023

Deal with Library-of-Congress call numbers

LibraryCallNumberLC is mostly designed to do call number normalization, with the following goals

  • The normalized call numbers are comparable with each other, for proper sorting
  • The normalized call number is a short as possible, so left-anchored wildcard searches are possible e.g., searching on “A11*” should give you all the A11 call numbers
  • A range defined by start_of_range and end_of_range should be correct, assuming that the string given for the end of the range is, in fact, a left prefix.


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