18.2. Nodes

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18.2.1. Create Node
18.2.2. Create Node with properties
18.2.3. Get node
18.2.4. Get non-existent node
18.2.5. Delete node
18.2.6. Nodes with relationships can not be deleted

18.2.1. Create Node

Figure 18.2. Final Graph

Example request

POST http://localhost:7474/db/data/node
Accept: application/json

Example response

201: Created
Content-Type: application/json
Location: http://localhost:7474/db/data/node/43

{
  "outgoing_relationships" : "http://localhost:7474/db/data/node/43/relationships/out",
  "data" : {
  },
  "traverse" : "http://localhost:7474/db/data/node/43/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/43/relationships/all/{-list|&|types}",
  "property" : "http://localhost:7474/db/data/node/43/properties/{key}",
  "self" : "http://localhost:7474/db/data/node/43",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/43/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/43/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/43/relationships/in",
  "extensions" : {
  },
  "create_relationship" : "http://localhost:7474/db/data/node/43/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/43/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/43/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/43/relationships/in/{-list|&|types}"
}

18.2.2. Create Node with properties

Figure 18.3. Final Graph

Example request

POST http://localhost:7474/db/data/node
Accept: application/json
Content-Type: application/json

{"foo" : "bar"}

Example response

201: Created
Content-Length: 1108
Content-Type: application/json
Location: http://localhost:7474/db/data/node/44

{
  "outgoing_relationships" : "http://localhost:7474/db/data/node/44/relationships/out",
  "data" : {
    "foo" : "bar"
  },
  "traverse" : "http://localhost:7474/db/data/node/44/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/44/relationships/all/{-list|&|types}",
  "property" : "http://localhost:7474/db/data/node/44/properties/{key}",
  "self" : "http://localhost:7474/db/data/node/44",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/44/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/44/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/44/relationships/in",
  "extensions" : {
  },
  "create_relationship" : "http://localhost:7474/db/data/node/44/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/44/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/44/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/44/relationships/in/{-list|&|types}"
}

18.2.3. Get node

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

Figure 18.4. Final Graph

Example request

GET http://localhost:7474/db/data/node/3
Accept: application/json

Example response

200: OK
Content-Type: application/json

{
  "outgoing_relationships" : "http://localhost:7474/db/data/node/3/relationships/out",
  "data" : {
  },
  "traverse" : "http://localhost:7474/db/data/node/3/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/3/relationships/all/{-list|&|types}",
  "property" : "http://localhost:7474/db/data/node/3/properties/{key}",
  "self" : "http://localhost:7474/db/data/node/3",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/3/relationships/out/{-list|&|types}",
  "properties" : "http://localhost:7474/db/data/node/3/properties",
  "incoming_relationships" : "http://localhost:7474/db/data/node/3/relationships/in",
  "extensions" : {
  },
  "create_relationship" : "http://localhost:7474/db/data/node/3/relationships",
  "paged_traverse" : "http://localhost:7474/db/data/node/3/paged/traverse/{returnType}{?pageSize,leaseTime}",
  "all_relationships" : "http://localhost:7474/db/data/node/3/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/3/relationships/in/{-list|&|types}"
}

18.2.4. Get non-existent node

Figure 18.5. Final Graph

Example request

GET http://localhost:7474/db/data/node/800000
Accept: application/json

Example response

404: Not Found
Content-Type: application/json

{
  "message" : "Cannot find node with id [800000] in database.",
  "exception" : "org.neo4j.server.rest.web.NodeNotFoundException: Cannot find node with id [800000] in database.",
  "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.node(DatabaseActions.java:116)", "org.neo4j.server.rest.web.DatabaseActions.getNode(DatabaseActions.java:227)", "org.neo4j.server.rest.web.RestfulGraphDatabase.getNode(RestfulGraphDatabase.java:216)", "sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)", "sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)", "sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)", "java.lang.reflect.Method.invoke(Method.java:597)", "com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)", "com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)", "com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)", "com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)", "com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)", "com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)", "com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)", "com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)", "com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)", "com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)", "com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)", "com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)", "com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)", "com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)", "com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)", "javax.servlet.http.HttpServlet.service(HttpServlet.java:820)", "org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)", "org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)", "org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)", "org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)", "org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)", "org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)", "org.mortbay.jetty.Server.handle(Server.java:326)", "org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)", "org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)", "org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)", "org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)", "org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)", "org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)", "org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)" ]
}

18.2.5. Delete node

Figure 18.6. Final Graph

Example request

DELETE http://localhost:7474/db/data/node/51
Accept: application/json

Example response

204: No Content

18.2.6. Nodes with relationships can not be deleted

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

Figure 18.7. Final Graph

Final-Graph-Nodes-with-relationships-can-not-be-deleted.svg

Example request

DELETE http://localhost:7474/db/data/node/52
Accept: application/json

Example response

409: Conflict
Content-Type: application/json

{
  "message" : "The node with id 52 cannot be deleted. Check that the node is orphaned before deletion.",
  "exception" : "org.neo4j.server.rest.web.OperationFailureException: The node with id 52 cannot be deleted. Check that the node is orphaned before deletion.",
  "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.deleteNode(DatabaseActions.java:248)", "org.neo4j.server.rest.web.RestfulGraphDatabase.deleteNode(RestfulGraphDatabase.java:230)", "sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)", "sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)", "sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)", "java.lang.reflect.Method.invoke(Method.java:597)", "com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)", "com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)", "com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)", "com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)", "com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)", "com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)", "com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)", "com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)", "com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)", "com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)", "com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)", "com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)", "com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)", "com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)", "com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)", "javax.servlet.http.HttpServlet.service(HttpServlet.java:820)", "org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)", "org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)", "org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)", "org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)", "org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)", "org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)", "org.mortbay.jetty.Server.handle(Server.java:326)", "org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)", "org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:926)", "org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)", "org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)", "org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)", "org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)", "org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)" ]
}