MongoDB how update element in array using Spring Query Update - spring

Question

In my project I'm using SpringBoot 1.3.2 and org.springframework.data.mongodb.core.query.*
I'm trying to update element in array, in my main object i have array looking like this:
"sections" : [
{
"sectionId" : "56cc3c908f5e6c56e677bd2e",
"name" : "Wellcome"
},
{
"sectionId" : "56cc3cd28f5e6c56e677bd2f",
"name" : "Hello my friends"
}
]
Using Spring I want to update name of record with sectionId 56cc3c908f5e6c56e677bd2e
I was trying to to this like that but it didn't work
Query query = Query.query(Criteria
.where("sections")
.elemMatch(
Criteria.where("sectionId").is(editedSection.getId())
)
);
Update update = new Update().set("sections", new BasicDBObject("sectionId", "56cc3c908f5e6c56e677bd2e").append("name","Hi there"));
mongoTemplate.updateMulti(query, update, Offer.class);
It create something like:
"sections" : {
"sectionId" : "56cc3c908f5e6c56e677bd2e",
"name" : "Hi there"
}
But this above is object { } I want an array [ ], and I don't want it remove other elements.
Can any body help me how to update name of record with sectionId 56cc3c908f5e6c56e677bd2e using Spring

Answer 1

You essentially want to replicate this mongo shell update operation:
db.collection.update(
{ "sections.sectionId": "56cc3c908f5e6c56e677bd2e" },
{
"$set": { "sections.$.name": "Hi there" }
},
{ "multi": true }
)
The equivalent Spring Data MongoDB code follows:
import static org.springframework.data.mongodb.core.query.Criteria.where;
import static org.springframework.data.mongodb.core.query.Query;
import static org.springframework.data.mongodb.core.query.Update;
...
WriteResult wr = mongoTemplate.updateMulti(
new Query(where("sections.sectionId").is("56cc3c908f5e6c56e677bd2e")),
new Update().set("sections.$.name", "Hi there"),
Collection.class
);

Answer 2

Can use BulkOperations approach to update list or array of document objects
BulkOperations bulkOps = mongoTemplate.bulkOps(BulkMode.UNORDERED, Person.class);
for(Person person : personList) {
Query query = new Query().addCriteria(new Criteria("id").is(person.getId()));
Update update = new Update().set("address", person.setAddress("new Address"));
bulkOps.updateOne(query, update);
}
BulkWriteResult results = bulkOps.execute();

Answer 3

Thats my solution for this problem:
public Mono<ProjectChild> UpdateCritTemplChild(
String id, String idch, String ownername) {
Query query = new Query();
query.addCriteria(Criteria.where("_id")
.is(id)); // find the parent
query.addCriteria(Criteria.where("tasks._id")
.is(idch)); // find the child which will be changed
Update update = new Update();
update.set("tasks.$.ownername", ownername); // change the field inside the child that must be updated
return template
// findAndModify:
// Find/modify/get the "new object" from a single operation.
.findAndModify(
query, update,
new FindAndModifyOptions().returnNew(true), ProjectChild.class
)
;
}