spring mongotemplate query append an array is creating array of array

Question

I need to append my field in mongodb

I am using below mongotemplate query for testing

List<String> dataList = Arrays.asList("Hello", "World!", "How", "Are", "You");

Update update = new Update();
     
update.push("mylist", dataList);
UpdateResult upResult = null;
query = new Query(Criteria.where("myId").is(appenModel.getMyId()));
try {
upResult = mongoTemplate.updateFirst(query, update, AppenModel.class);
logger.info("Updated Successfully");
} catch (Exception e) {
logger.error("Update is failed", e);
}

for testing purpose I am calling above code multiple times but its getting appended in my collection as a extra array .

It is updating as Array of Array

{
_id:5d5d55cde95b5c58740ec2d4
myId:123
   mylist:[["Hello", "World!", "How", "Are", "You","Hello", "World!", "How", "Are", "You","Hello", "World!", "How", "Are", "You"]]
}

my expectation is

{
myId:123
_id:5d5d55cde95b5c58740ec2d4
mylist:["Hello", "World!", "How", "Are", "You","Hello", "World!", "How", "Are", "You","Hello", "World!", "How", "Are", "You"]
}

indra · Accepted Answer · 2019-09-04 08:02:14Z

3

since pushAll is depreciated you have to use push and each together

update.push("mylist").each(dataList)

answered Sep 4, 2019 at 8:02

indra

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Comments

Himanshu Sharma · Accepted Answer · 2019-08-21 18:36:41Z

0

We need to use pushAll() instead of push().

List<String> dataList = Arrays.asList("Hello", "World!", "How", "Are", "You");
Update update = new Update();
update.pushAll("mylist", dataList);

answered Aug 21, 2019 at 18:36

Himanshu Sharma

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2 Comments

scoder Over a year ago

Push all is depreciated.. so can not use it .. but I don't know how to use push with each

t3rmin41 Over a year ago

@kcoder update.push("mylist").each(dataList)

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