public long getMaxVal() { if (type instanceof SignedBitFieldType) { BitFieldType bitField = (BitFieldType) type; return (1 << bitField.getLength() - 1) - 1; } if (type instanceof BitFieldType) { BitFieldType bitField = (BitFieldType) type; return (1 << bitField.getLength()) - 1; } if (type instanceof StdIntegerType) { StdIntegerType integerType = (StdIntegerType) type; return integerType.getUpperBound().longValue(); } throw new RuntimeException("type of field '" + param.getName() + "' is not a simple type"); }