[[rest-api-add-a-node-to-an-index-unless-a-node-already-exists-for-the-given-mapping]]
=== Add a node to an index unless a node already exists for the given mapping ===

.Final Graph
["dot", "Final-Graph-Add-a-node-to-an-index-unless-a-node-already-exists-for-the-given-mapping.svg", "neoviz"]
----
  N121 [
    label = "{Node\[121\]|}"
  ]
----

_Example request_

* *+POST+*  +http://localhost:7474/db/data/index/node/people?unique+
* *+Accept:+* +application/json+
* *+Content-Type:+* +application/json+
[source,javascript]
----
{"key": "name", "value": "Mattias", "uri":"http://localhost:7474/db/data/node/121"}
----


_Example response_

* *+201:+* +Created+
* *+Content-Type:+* +application/json+
* *+Location:+* +http://localhost:7474/db/data/index/node/people/name/Mattias/121+
[source,javascript]
----
{
  "indexed" : "http://localhost:7474/db/data/index/node/people/name/Mattias/121",
  "outgoing_relationships" : "http://localhost:7474/db/data/node/121/relationships/out",
  "data" : {
  },
  "traverse" : "http://localhost:7474/db/data/node/121/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/121/relationships/all/{-list|&|types}",
  "property" : "http://localhost:7474/db/data/node/121/properties/{key}",
  "self" : "http://localhost:7474/db/data/node/121",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/121/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/121/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/121/relationships/in",
  "extensions" : {
  },
  "create_relationship" : "http://localhost:7474/db/data/node/121/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/121/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/121/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/121/relationships/in/{-list|&|types}"
}
----


