Neo4j REST API - create unique node - rest

Question

I am trying to use the REST API to create a unique node. However, I am getting the error about requiring the key 'uri' (see below). Based on the documented examples, this call creates and indexes the newly created node ... so there should not be a 'uri' paramater. My request and response are below. What am I doing wrong?
REQUEST:
http://www.somemachine.com:7474/db/data/index/node/idxHost?unique=get_or_create
{
"key": "name",
"value": "HOST",
"properties": {
"type": "company",
"name": "HOST",
"sequence": 1
}
}
RESPONSE:
state:400, body:
{
"message" : "Missing required key: \"uri\"",
"exception" : "BadInputException",
"fullname" : "org.neo4j.server.rest.repr.BadInputException",
"stacktrace" : [ "org.neo4j.server.rest.repr.formats.JsonFormat.readMap(JsonFormat.java:92)", "org.neo4j.server.rest.web.RestfulGraphDatabase.addToNodeIndex(RestfulGraphDatabase.java:802)", "java.lang.reflect.Method.invoke(Method.java:601)" ],
"cause" : {
"message" : "Missing required key: \"uri\"",
"exception" : "BadInputException",
"stacktrace" : [ "org.neo4j.server.rest.repr.DefaultFormat.validateKeys(DefaultFormat.java:153)", "org.neo4j.server.rest.repr.formats.JsonFormat.readMap(JsonFormat.java:88)", "org.neo4j.server.rest.web.RestfulGraphDatabase.addToNodeIndex(RestfulGraphDatabase.java:802)", "java.lang.reflect.Method.invoke(Method.java:601)" ],
"fullname" : "org.neo4j.server.rest.repr.BadInputException"
}
}
Using curl
c:\apps\curl\curl-7.28.1-win64-nossl>curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X POST -d '{"key":"name","value":"HOST","propert
ies":{"type":"company","name":"HOST","sequence":1}}' http://www.somemachine.com:7474/db/data/index/node/idxHost?unique=get_or_create
HTTP/1.1 400 Bad Request
Content-Length: 489
Content-Encoding: UTF-8
Content-Type: application/json
Access-Control-Allow-Origin: *
Server: Jetty(6.1.25)
{
"message" : "Unexpected character (''' (code 39)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')\n at [Source: java.io.Str
ingReader#1e70f68; line: 1, column: 2]",
"exception" : "BadInputException",
"stacktrace" : [ "org.neo4j.server.rest.repr.formats.JsonFormat.readMap(JsonFormat.java:92)", "org.neo4j.server.rest.web.RestfulGraphDatabase.addToNodeIndex(R
estfulGraphDatabase.java:776)", "java.lang.reflect.Method.invoke(Unknown Source)" ]
}

Answer 1

According to the doc, in 1.8 the url ends with '?unique' whereas in 1.9 is '?uniqueness=get_or_create'
I think this may cause your error.
see for 1.8: http://docs.neo4j.org/chunked/stable/rest-api-unique-indexes.html#rest-api-add-a-node-to-an-index-unless-a-node-already-exists-for-the-given-mapping
and 1.9: http://docs.neo4j.org/chunked/milestone/rest-api-unique-indexes.html