mismatch hash value

[nipadadbhawala]

Hi,

Here is test that I wrote and I see it failing due to the fact that if the data order changes,the hash changes and then it thinks that it is new data.

@Test
    void testPodPool()
    {
        def g = new TinkerGraph()
        def mapper = new GraphObjectMapper(g)

        Map<String, Object> vdc = new LinkedHashMap<String, Object>();

        vdc.put("name", "myVDC");


        Vertex vdcV = mapper.toGraph(vdc);

        Map<String, Object> tenant = new LinkedHashMap<String, Object>();
        tenant.put("name", "teannt");

        Map<String, Object> provider = new LinkedHashMap<String, Object>();
        provider.put("name", "provider");
        provider.put("occupant", tenant);
        provider.put("version", 1);

        Vertex occuV = mapper.toGraph(provider);

        Map<String, Object> pool = new LinkedHashMap<String, Object>();
        pool.put("name", "RI-vDC_PODPool");
        pool.put("occupant", mapper.fromGraph(occuV, LinkedHashMap.class));
        pool.put("vdc", mapper.fromGraph(vdcV, LinkedHashMap.class));

        Vertex poolV = mapper.toGraph(pool);

        int num = Iterables.size(g.query().vertices());
        System.out.println("Update is good: " + (Iterables.size(g.query().vertices()) == 4));
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        try {
                GraphSONWriter.outputGraph(g, out);
                System.out.println("Graph: "+ out.toString());
            } catch (IOException e)
            {
                out.close();
                System.out.println(e.detailMessage);
            }
    }

System.out.println("Update is good: " + (Iterables.size(g.query().vertices()) == 4));

this prints false as it creates 5 vertices.

#####received: {name=myVDC}

@@@@@@@@@@@Hashed: {_hash=5099648736912361917, name=myVDC}

#####received: {name=provider, version=1, occupant={name=teannt}}

@@@@@@@@@@@Hashed: {_hash=-7815931700235832755, name=provider, version=1, occupant={name=teannt, _hash=-9217391480162829852}}

#####received: {name=teannt, _hash=-9217391480162829852}

@@@@@@@@@@@Hashed: {name=teannt, _hash=-9217391480162829852}

#####received: {vdc={name=myVDC}, name=RI-vDC_PODPool, occupant={name=provider, occupant={name=teannt}, version=1}}

@@@@@@@@@@@Hashed: {vdc={name=myVDC, _hash=5099648736912361917}, _hash=3462430383314112090, name=RI-vDC_PODPool, occupant={name=provider, occupant={name=teannt, _hash=-9217391480162829852}, version=1, _hash=-1116000336789357522}}

#####received: {name=myVDC, _hash=5099648736912361917}

@@@@@@@@@@@Hashed: {name=myVDC, _hash=5099648736912361917}

#####received: {name=provider, occupant={name=teannt, _hash=-9217391480162829852}, version=1, _hash=-1116000336789357522}

@@@@@@@@@@@Hashed: {name=provider, occupant={name=teannt, _hash=-9217391480162829852}, version=1, _hash=-1116000336789357522}

#####received: {name=teannt, _hash=-9217391480162829852}

@@@@@@@@@@@Hashed: {name=teannt, _hash=-9217391480162829852}
Update is good: false
Graph: {"mode":"NORMAL","vertices":[{"_hash":-9217391480162829852,"name":"teannt","___type":"java.util.LinkedHashMap","_id":"2","_type":"vertex"},{"_hash":-7815931700235832755,"name":"provider","___type":"java.util.LinkedHashMap","version":1,"_id":"1","_type":"vertex"},{"_hash":5099648736912361917,"name":"myVDC","___type":"java.util.LinkedHashMap","_id":"0","_type":"vertex"},{"_hash":-1116000336789357522,"name":"provider","___type":"java.util.LinkedHashMap","version":1,"_id":"6","_type":"vertex"},{"_hash":3462430383314112090,"name":"RI-vDC_PODPool","___type":"java.util.LinkedHashMap","_id":"4","_type":"vertex"}],"edges":[{"_id":"3","_type":"edge","_outV":"1","_inV":"2","_label":"occupant"},{"_id":"7","_type":"edge","_outV":"6","_inV":"2","_label":"occupant"},{"_id":"5","_type":"edge","_outV":"4","_inV":"0","_label":"vdc"},{"_id":"8","_type":"edge","_outV":"4","_inV":"6","_label":"occupant"}]}

From the log you could see that for the provider, since the order changes, the hash changed.

How to fix this issue? Any help is appreciated.

thanks,