public List<Type> guessTypes() throws SQLException {
final ResultSetMetaData metaData = resultSet.getMetaData();
final int columnCount = metaData.getColumnCount();
assert this.types == null || this.types.size() == columnCount;
List<Type> types = new ArrayList<Type>();
for (int i = 0; i < columnCount; i++) {
final Type suggestedType = this.types == null ? null : this.types.get(i);
types.add(guessType(suggestedType, metaData, i));
}
return types;
}
