public void convertString(UTF8StringPointable stringp, DataOutput dOut) throws SystemException, IOException {
boolean castable = true;
try {
abvsInner.reset();
CastToByteOperation castTo = new CastToByteOperation();
castTo.convertString(stringp, dOutInner);
} catch (Exception e) {
castable = false;
}
dOut.write(ValueTag.XS_BOOLEAN_TAG);
dOut.write((byte) (castable ? 1 : 0));