Class FileFunction

All Implemented Interfaces:
NamedExpression, HasSQL, Typed

public final class FileFunction extends Function1_2
A FILE_READ or FILE_WRITE function.
  • Field Details

    • FILE_READ

      public static final int FILE_READ
      FILE_READ() (non-standard).
      See Also:
    • FILE_WRITE

      public static final int FILE_WRITE
      FILE_WRITE() (non-standard).
      See Also:
    • NAMES

      private static final String[] NAMES
    • function

      private final int function
  • Constructor Details

  • Method Details

    • getValue

      public Value getValue(SessionLocal session)
      Description copied from class: Expression
      Return the resulting value for the current row.
      Overrides:
      getValue in class Function1_2
      Parameters:
      session - the session
      Returns:
      the result
    • optimize

      public Expression optimize(SessionLocal session)
      Description copied from class: Expression
      Try to optimize the expression.
      Specified by:
      optimize in class Expression
      Parameters:
      session - the session
      Returns:
      the optimized expression
    • isEverything

      public boolean isEverything(ExpressionVisitor visitor)
      Description copied from class: Expression
      Check if this expression and all sub-expressions can fulfill a criteria. If any part returns false, the result is false.
      Overrides:
      isEverything in class Operation1_2
      Parameters:
      visitor - the visitor
      Returns:
      if the criteria can be fulfilled
    • getName

      public String getName()
      Description copied from interface: NamedExpression
      Get the name.
      Returns:
      the name in uppercase