20.7. Nodes

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20.7.1. Create node
20.7.2. Create node with properties
20.7.3. Get node
20.7.4. Get non-existent node
20.7.5. Delete node
20.7.6. Nodes with relationships cannot be deleted

20.7.1. Create node

Figure 20.13. Final Graph

Example request

POST http://localhost:7474/db/data/node
Accept: application/json; charset=UTF-8

Example response

201: Created
Content-Type: application/json; charset=UTF-8
Location: http://localhost:7474/db/data/node/8

{
  "extensions" : {
  },
  "labels" : "http://localhost:7474/db/data/node/8/labels",
  "outgoing_relationships" : "http://localhost:7474/db/data/node/8/relationships/out",
  "traverse" : "http://localhost:7474/db/data/node/8/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/8/relationships/all/{-list|&|types}",
  "self" : "http://localhost:7474/db/data/node/8",
  "property" : "http://localhost:7474/db/data/node/8/properties/{key}",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/8/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/8/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/8/relationships/in",
  "create_relationship" : "http://localhost:7474/db/data/node/8/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/8/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/8/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/8/relationships/in/{-list|&|types}",
  "data" : {
  }
}

20.7.2. Create node with properties

Figure 20.14. Final Graph

Example request

POST http://localhost:7474/db/data/node
Accept: application/json; charset=UTF-8
Content-Type: application/json

{
  "foo" : "bar"
}

Example response

201: Created
Content-Length: 1156
Content-Type: application/json; charset=UTF-8
Location: http://localhost:7474/db/data/node/4

{
  "extensions" : {
  },
  "labels" : "http://localhost:7474/db/data/node/4/labels",
  "outgoing_relationships" : "http://localhost:7474/db/data/node/4/relationships/out",
  "traverse" : "http://localhost:7474/db/data/node/4/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/4/relationships/all/{-list|&|types}",
  "self" : "http://localhost:7474/db/data/node/4",
  "property" : "http://localhost:7474/db/data/node/4/properties/{key}",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/4/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/4/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/4/relationships/in",
  "create_relationship" : "http://localhost:7474/db/data/node/4/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/4/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/4/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/4/relationships/in/{-list|&|types}",
  "data" : {
    "foo" : "bar"
  }
}

20.7.3. Get node

Note that the response contains URI/templates for the available operations for getting properties and relationships.

Figure 20.15. Final Graph

Example request

GET http://localhost:7474/db/data/node/30
Accept: application/json; charset=UTF-8

Example response

200: OK
Content-Type: application/json; charset=UTF-8

{
  "extensions" : {
  },
  "labels" : "http://localhost:7474/db/data/node/30/labels",
  "outgoing_relationships" : "http://localhost:7474/db/data/node/30/relationships/out",
  "traverse" : "http://localhost:7474/db/data/node/30/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/30/relationships/all/{-list|&|types}",
  "self" : "http://localhost:7474/db/data/node/30",
  "property" : "http://localhost:7474/db/data/node/30/properties/{key}",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/30/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/30/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/30/relationships/in",
  "create_relationship" : "http://localhost:7474/db/data/node/30/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/30/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/30/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/30/relationships/in/{-list|&|types}",
  "data" : {
  }
}

20.7.4. Get non-existent node

Figure 20.16. Final Graph

Example request

GET http://localhost:7474/db/data/node/3400000
Accept: application/json; charset=UTF-8

Example response

404: Not Found
Content-Type: application/json; charset=UTF-8

{
  "message": "Cannot find node with id [3400000] in database.",
  "exception": "NodeNotFoundException",
  "fullname": "org.neo4j.server.rest.web.NodeNotFoundException",
  "stacktrace": [
    "org.neo4j.server.rest.web.DatabaseActions.node(DatabaseActions.java:183)",
    "org.neo4j.server.rest.web.DatabaseActions.getNode(DatabaseActions.java:228)",
    "org.neo4j.server.rest.web.RestfulGraphDatabase.getNode(RestfulGraphDatabase.java:265)",
    "java.lang.reflect.Method.invoke(Method.java:606)",
    "org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)",
    "org.neo4j.server.rest.security.SecurityFilter.doFilter(SecurityFilter.java:112)",
    "java.lang.Thread.run(Thread.java:724)"
  ]
}

20.7.5. Delete node

Figure 20.17. Final Graph

Example request

DELETE http://localhost:7474/db/data/node/5
Accept: application/json; charset=UTF-8

Example response

204: No Content

20.7.6. Nodes with relationships cannot be deleted

The relationships on a node has to be deleted before the node can be deleted.

Figure 20.18. Final Graph

Final-Graph-Nodes-with-relationships-cannot-be-deleted.svg

Example request

DELETE http://localhost:7474/db/data/node/12
Accept: application/json; charset=UTF-8

Example response

409: Conflict
Content-Type: application/json; charset=UTF-8

{
  "message": "The node with id 12 cannot be deleted. Check that the node is orphaned before deletion.",
  "exception": "OperationFailureException",
  "fullname": "org.neo4j.server.rest.web.OperationFailureException",
  "stacktrace": [
    "org.neo4j.server.rest.web.DatabaseActions.deleteNode(DatabaseActions.java:237)",
    "org.neo4j.server.rest.web.RestfulGraphDatabase.deleteNode(RestfulGraphDatabase.java:279)",
    "java.lang.reflect.Method.invoke(Method.java:606)",
    "org.neo4j.server.rest.transactional.TransactionalRequestDispatcher.dispatch(TransactionalRequestDispatcher.java:139)",
    "org.neo4j.server.rest.security.SecurityFilter.doFilter(SecurityFilter.java:112)",
    "java.lang.Thread.run(Thread.java:724)"
  ]
}