Package dev.frostlake.functions.scalar.file

Class FlGetContentType

java.lang.Object
dev.frostlake.functions.BuiltInFunction
dev.frostlake.functions.scalar.file.FlGetContentType
public class FlGetContentType extends BuiltInFunction
FL_GET_CONTENT_TYPE(file) — the file's MIME content type.

Live-verified: this is the field the whole classification side of the family keys off. FL_GET_FILE_TYPE and all five FL_IS_* predicates read CONTENT_TYPE ONLY, by exact case-sensitive match against a closed set (see FileContentTypes) — not the path, not the bytes. NULL in, NULL out.

  • Constructor Details

    • FlGetContentType

      public FlGetContentType()

  • Method Details

    • evaluate

      public Object evaluate(List<Object> args)
      Description copied from class: BuiltInFunction
      Computes the function's result over its already-evaluated argument values. A SQL NULL argument arrives as Java null, and returning null makes the SQL result NULL.
      Specified by:
      evaluate in class BuiltInFunction
      Parameters:
      args - the argument values, in call order
      Returns:
      the function's value for these arguments, or null for SQL NULL

    • getMinArgCount

      public int getMinArgCount()
      Description copied from class: BuiltInFunction
      The fewest arguments a call to this function may pass; fewer is an argument-count error.
      Specified by:
      getMinArgCount in class BuiltInFunction
      Returns:
      the minimum accepted argument count

    • getMaxArgCount

      public int getMaxArgCount()
      Description copied from class: BuiltInFunction
      The most arguments a call to this function may pass; Integer.MAX_VALUE marks a variadic function (see BuiltInFunction.isVariadic()).
      Specified by:
      getMaxArgCount in class BuiltInFunction
      Returns:
      the maximum accepted argument count