How to perform batch update in Spring with a list of maps?

Question

New to Spring, I am trying to insert a List> into a table. Until now I have been using the SqlParameterSource for b

Answer 1

As per Spring NamedParameterJDBCTemplate docs, found here, this method can be used for batch updating with maps.

int[] batchUpdate(String sql, Map[] batchValues)

The real challange was to a get an array of Map from a corresponding List>. I used the following code to get the array and perform the batch update.

public static Map[] getArrayData(List> list){
        @SuppressWarnings("unchecked")
        Map[] maps = new HashMap[list.size()];

        Iterator> iterator = list.iterator();
        int i = 0;
        while (iterator.hasNext()) {
            Map map = (Map) iterator
                    .next();
            maps[i++] = map;
        }

        return maps;
    }