public boolean isFieldSigned(int fieldOrdinal) {
RelDataType type = getFieldType(fieldOrdinal);
if (SqlTypeUtil.isNumeric(type)) {
return true;
} else {
return false;
}
}
private boolean requiresSpecializedCast() {
if ((rhsType != null)
&& (SqlTypeUtil.isNumeric(rhsType) || (rhsType.getSqlTypeName() == SqlTypeName.BOOLEAN))
&& SqlTypeUtil.inCharOrBinaryFamilies(lhsType)
&& !SqlTypeUtil.isLob(lhsType)) {
// Boolean or Numeric to String.
// sometimes the Integer got slipped by.
return true;
} else {
return false;
}
}