Method Detail

• isNegatable

  boolean isNegatable​(ExpressionVisitor visitor)

  Check whether this specific instance of the expression is negatable

  Returns:

  true if it is

• negate

  Expression negate​()

  Create an expression that returns the negation of this expression

  Returns:

  the negated expression

  Throws:

  IllegalOperationException - if isNegatable() returns false