sun.com/j2se/1.5.0/docs/api/java/util/Formatter.html#syntax}NOTE: Obviously, all columns have to be strings. Users can use "CAST(a AS INT)" to convert columns to other types. NOTE: This implementation is using String, and javaStringObjectInspector. A more efficient implementation should use UTF-8 encoded Text and writableStringObjectInspector. We should switch to that when we have a UTF-8 based Regex library.
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