Elasticsearch: Create new document if document is not exist

Some times you want to create a document, if it not exist, how to do that.

Approach 1:

First you check whether document is exist or not using HEAD request, if document not exist create new one.

Approach 2

Using query parameter 'op_type'.

PUT xyz/employees/1?op_type=create

Above statement creates document, if it is not exist; else it throws DocumentAlreadyExistsException.

PUT xyz/employees/1?op_type=create
{
  "firstName":"PTR",
  "lastName" : "Nayan"
}

Above snippet throws DocumentAlreadyExistsException, since document with id 1 is already exist.

{

   "error": "DocumentAlreadyExistsException[[xyz][2] [employees][1]: document already exists]",

   "status": 409

}

Approach 3
Use _create end point.

PUT xyz/employees/1/_create

Above statement creates document, if it is not exist; else it throws DocumentAlreadyExistsException.

PUT xyz/employees/1/_create
{
  "firstName":"PTR",
  "lastName" : "Nayan"
}

Above snippet throws DocumentAlreadyExistsException, since document with id 1 is already exist..

{

   "error": "DocumentAlreadyExistsException[[xyz][2] [employees][1]: document already exists]",

   "status": 409

}

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