如何从DAO迭代多个数据

Question

My code is like

for (Integer catId: catIds) {
        List<Object[]> objectList = invoiceDAO.periodWiseSalesRepoByRetailOrServices(ids, catId, startDate, endDate);
    }

By using the code above, I get data when catId = 0 from table like:

similarly when catId = 1, I got data like:

What I want is, if date and shopid is the same, I just want to calculate both sums. Sum means for date 20-12-2016 i get 6440 when catId=1 ,similarly in next image sum is 1809 for same shopId i want 8249 as total . like

What is the relevant approach?

Answer 1

I fixed this issue as below:

if (map != null && map.containsKey(objects2[3].toString())) {
    map.put(objects2[3].toString(), map.get(objects2[3].toString()) + Double.parseDouble(objects2[2].toString()));
} else {
    map.put(objects2[3].toString(), Double.parseDouble(objects2[2].toString()));
}