Hi Josh,
I'm just wiring up a bunch of code that implements REST paging, and then I'll
codify these tests and sort it out.
Jim
On 18 Jun 2011, at 01:17, Josh Adell wrote:
> Jim,
> The best I can do as far as a failing test is this series of curl
> calls. I create 2 nodes, then connect them with a relationship that
> has a property called "distance". When I ask for paths without
> specifying the algorithm, I get back the path with the relationship.
> When I specify the algorithm as "dijkstra" with a cost property of
> "distance", I get back a 400 Bad Request with a stack trace.
>
> Now interestingly, if I create the relationship with a distance of
> 2.0, it works. Unfortunately, PHP's json_encode method turns a double
> 2.0 into an integer 2.
>
> My original thought was to make the DoubleEvaluator class cast the
> Integer cost property value to a basic double before wrapping it in a
> Double object.
>
> Here is the series of commands:
>
> ===== SHELL
>
> $ curl -i -HAccept:application/json -HContent-Type:application/json -X
> POST -d '{"name":"A"}' http://localhost:7474/db/data/node
> HTTP/1.1 201 Created
> Content-Length: 996
> Location: http://localhost:7474/db/data/node/73
> Content-Encoding: UTF-8
> Content-Type: application/json
> Access-Control-Allow-Origin: *
> Server: Jetty(6.1.25)
>
> {
> "outgoing_relationships" :
> "http://localhost:7474/db/data/node/73/relationships/out";,
> "data" : {
> "name" : "A"
> },
> "traverse" : "http://localhost:7474/db/data/node/73/traverse/{returnType}";,
> "all_typed_relationships" :
> "http://localhost:7474/db/data/node/73/relationships/all/{-list|&|types}",
> "property" : "http://localhost:7474/db/data/node/73/properties/{key}";,
> "self" : "http://localhost:7474/db/data/node/73";,
> "properties" : "http://localhost:7474/db/data/node/73/properties";,
> "outgoing_typed_relationships" :
> "http://localhost:7474/db/data/node/73/relationships/out/{-list|&|types}",
> "incoming_relationships" :
> "http://localhost:7474/db/data/node/73/relationships/in";,
> "extensions" : {
> },
> "create_relationship" :
> "http://localhost:7474/db/data/node/73/relationships";,
> "all_relationships" :
> "http://localhost:7474/db/data/node/73/relationships/all";,
> "incoming_typed_relationships" :
> "http://localhost:7474/db/data/node/73/relationships/in/{-list|&|types}"
> }
>
> $ curl -i -HAccept:application/json -HContent-Type:application/json -X
> POST -d '{"name":"B"}' http://localhost:7474/db/data/node
> HTTP/1.1 201 Created
> Content-Length: 996
> Location: http://localhost:7474/db/data/node/74
> Content-Encoding: UTF-8
> Content-Type: application/json
> Access-Control-Allow-Origin: *
> Server: Jetty(6.1.25)
>
> {
> "outgoing_relationships" :
> "http://localhost:7474/db/data/node/74/relationships/out";,
> "data" : {
> "name" : "B"
> },
> "traverse" : "http://localhost:7474/db/data/node/74/traverse/{returnType}";,
> "all_typed_relationships" :
> "http://localhost:7474/db/data/node/74/relationships/all/{-list|&|types}",
> "property" : "http://localhost:7474/db/data/node/74/properties/{key}";,
> "self" : "http://localhost:7474/db/data/node/74";,
> "properties" : "http://localhost:7474/db/data/node/74/properties";,
> "outgoing_typed_relationships" :
> "http://localhost:7474/db/data/node/74/relationships/out/{-list|&|types}",
> "incoming_relationships" :
> "http://localhost:7474/db/data/node/74/relationships/in";,
> "extensions" : {
> },
> "create_relationship" :
> "http://localhost:7474/db/data/node/74/relationships";,
> "all_relationships" :
> "http://localhost:7474/db/data/node/74/relationships/all";,
> "incoming_typed_relationships" :
> "http://localhost:7474/db/data/node/74/relationships/in/{-list|&|types}"
> }
>
> $ curl -i -HAccept:application/json -HContent-Type:application/json -X
> POST -d
> '{"to":"http://localhost:7474/db/data/node/74","type":"GO","data":{"name":"AB","distance":2}}'
> http://localhost:7474/db/data/node/73/relationships
> HTTP/1.1 201 Created
> Content-Length: 421
> Location: http://localhost:7474/db/data/relationship/64
> Content-Encoding: UTF-8
> Content-Type: application/json
> Access-Control-Allow-Origin: *
> Server: Jetty(6.1.25)
>
> {
> "start" : "http://localhost:7474/db/data/node/73";,
> "data" : {
> "distance" : 2,
> "name" : "AB"
> },
> "self" : "http://localhost:7474/db/data/relationship/64";,
> "property" :
> "http://localhost:7474/db/data/relationship/64/properties/{key}";,
> "properties" : "http://localhost:7474/db/data/relationship/64/properties";,
> "type" : "GO",
> "extensions" : {
> },
> "end" : "http://localhost:7474/db/data/node/74";
> }
>
> ##### This succeeds
> $ curl -i -HAccept:application/json -HContent-Type:application/json -X
> POST -d '{"to":"http://localhost:7474/db/data/node/74","type":"GO"}'
> http://localhost:7474/db/data/node/73/paths
> HTTP/1.1 200 OK
> Content-Length: 297
> Content-Encoding: UTF-8
> Content-Type: application/json
> Access-Control-Allow-Origin: *
> Server: Jetty(6.1.25)
>
> [ {
> "start" : "http://localhost:7474/db/data/node/73";,
> "nodes" : [ "http://localhost:7474/db/data/node/73";,
> "http://localhost:7474/db/data/node/74"; ],
> "length" : 1,
> "relationships" : [ "http://localhost:7474/db/data/relationship/64"; ],
> "end" : "http://localhost:7474/db/data/node/74";
> } ]
>
>
> ##### This fails
> $ curl -i -HAccept:application/json -HContent-Type:application/json -X
> POST -d
> '{"to":"http://localhost:7474/db/data/node/74","type":"GO","algorithm":"dijkstra","cost
> property":"distance"}' http://localhost:7474/db/data/node/73/paths
> HTTP/1.1 400 Bad Request
> Content-Length: 4579
> Content-Encoding: UTF-8
> Content-Type: application/json
> Access-Control-Allow-Origin: *
> Server: Jetty(6.1.25)
>
> {
> "message" : "java.lang.Integer cannot be cast to java.lang.Double",
> "exception" : "java.lang.ClassCastException: java.lang.Integer
> cannot be cast to java.lang.Double",
> "stacktrace" : [
> "org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:38)",
> "org.neo4j.graphalgo.impl.util.DoubleEvaluator.getCost(DoubleEvaluator.java:26)",
> "org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:100)",
> "org.neo4j.graphalgo.impl.path.Dijkstra$SelectorFactory.calculateValue(Dijkstra.java:88)",
> "org.neo4j.graphalgo.impl.util.BestFirstSelectorFactory$BestFirstSelector.next(BestFirstSelectorFactory.java:66)",
> "org.neo4j.kernel.impl.traversal.TraverserImpl$TraverserIterator.fetchNextOrNull(TraverserImpl.java:127)",
> "org.neo4j.kernel.impl.traversal.TraverserImpl$TraverserIterator.fetchNextOrNull(TraverserImpl.java:94)",
> "org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:55)",
> "org.neo4j.graphalgo.impl.util.StopAfterWeightIterator.fetchNextOrNull(StopAfterWeightIterator.java:45)",
> "org.neo4j.graphalgo.impl.util.StopAfterWeightIterator.fetchNextOrNull(StopAfterWeightIterator.java:29)",
> "org.neo4j.helpers.collection.PrefetchingIterator.hasNext(PrefetchingIterator.java:55)",
> "org.neo4j.helpers.collection.IteratorWrapper.hasNext(IteratorWrapper.java:42)",
> "org.neo4j.server.rest.repr.ListRepresentation.serialize(ListRepresentation.java:58)",
> "org.neo4j.server.rest.repr.ListRepresentation.serialize(ListRepresentation.java:51)",
> "org.neo4j.server.rest.repr.OutputFormat.format(OutputFormat.java:118)",
> "org.neo4j.server.rest.repr.OutputFormat.response(OutputFormat.java:95)",
> "org.neo4j.server.rest.repr.OutputFormat.ok(OutputFormat.java:48)",
> "org.neo4j.server.rest.web.RestfulGraphDatabase.allPaths(RestfulGraphDatabase.java:987)",
> "sun.reflect.GeneratedMethodAccessor153.invoke(Unknown Source)",
> "sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)",
> "java.lang.reflect.Method.invoke(Method.java:597)",
> "com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:184)",
> "com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:67)",
> "com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:276)",
> "com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)",
> "com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:83)",
> "com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:133)",
> "com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:71)",
> "com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1171)",
> "com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1103)",
> "com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1053)",
> "com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1043)",
> "com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:406)",
> "com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:477)",
> "com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:662)",
> "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$RequestHandler.content(HttpConnection.java:943)",
> "org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)",
> "org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)",
> "org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)",
> "org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)",
> "org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)"
> ]
> }
>
> ===== END SHELL
>
> Thanks for any help you can provide.
>
> -- Josh
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