MongoDB Create an Auto-Increment Sequence Field

manpreet Best Answer 2 years ago

I'm using Spring Data Mongo in my POC and look like there is no way to control the auto-incrementfeature through Spring Data Mongo.

I need to write logic something like below, but I suspect its not good for higher org. Can something be achived using Spring Data Mongo ?

> function getStudentSequence(sequenceName) {
 var result = db.studentcounters.findAndModify(
  {
   query: { _id: sequenceName },
   update: { $inc: { seq: 1 } },
   new: true
  }
 );
 return result.seq;
}

insert

> db.students.insert(
{
      _id: getStudentSequence("rollNo"),
      name: "Yashwant Chavan",
  class : "XI"
 }
 )
WriteResult({ "nInserted" : 1 })