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How to insert data as JSON object with Gremlin API in Azure Cosmos DB


By : Moshe Ales
Date : September 17 2020, 08:00 AM
help you fix your problem No such method or api which is similar to your imagination could be found in gremlin api.
According to your description,it seems that you just want to bulk import multiple properties into Vertex.I'd recommand you to loop the property json array or json object(for key in obj....) to execute .property('XXX', 'YYY') in the bulk.
code :


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Gremlin Azure Cosmos graphSON Complex Object


By : Nicolas M
Date : March 29 2020, 07:55 AM
I wish this helpful for you When asking questions about Gremlin it's always best to include a brief Gremlin script that can create some sample data as it makes it incredibly easy for those who answer to give you an exact/tested traversal that can solve your problem (example).
As to your question, you can definitely return data in whatever form you need. It might help to read this recipe in the TinkerPop documentation on Collections. In your case, I think you just need a nested project() type of traversal:
code :
g.V("my-key").
  project('name','address', 'rooms')
    by('name').
    by('address').
    by(out('a-room').
       project('number','size','tenantCount')
         by('number').
         by('size').
         by(out('a-tenant').count()).
       fold())

Rename property with Gremlin in Azure Cosmos DB


By : another_sam
Date : March 29 2020, 07:55 AM
This might help you Some of our codebase has changed, so it now expects the vertices that used to have a property with the name "Sdg" to now have a property with the name "causeType" and with the same value instead.... In short, a renaming of the property. , Maybe there's a better way, but I think this should work for you:
code :
g.V().has('sdg').property('causeType', values('sdg'))

g.V().has('sdg').property('causeType', values('sdg')).properties('sdg').drop()


Azure Cosmos DB indexing for gremlin queries


By : user3270521
Date : March 29 2020, 07:55 AM
wish helps you Azure Cosmos DB is a schema-agnostic database that allows you to iterate on your application without having to deal with schema or index management. By default, Azure Cosmos DB automatically indexes every property for all items in your container without having to define any schema or configure secondary indexes.
For more details, we can see Indexing policies in Azure Cosmos DB.

Exception thrown: 'Microsoft.Azure.Cosmos.CosmosException', Bad Request while bulk importing JSON to Azure Cosmos DB


By : hrajbharat
Date : March 29 2020, 07:55 AM
wish help you to fix your issue According to my test, when we create a new document, we must provide "id" property. For more details, please refer to the document.
For example
code :
 [{
         "SId": "101",
         "SName": "ABC"
     }, {
         "SId": "102",
         "SName": "XYZ"
     }
 ]
        async static Task Main(string[] args)
        {
            string json = File.ReadAllText(@"E:\test.json");
            List<StudentInfo> lists = JsonConvert.DeserializeObject<List<StudentInfo>>(json);            
            CosmosClientOptions options = new CosmosClientOptions() { AllowBulkExecution = true, ConnectionMode = ConnectionMode.Gateway };
            CosmosClient cosmosClient = new CosmosClient(EndpointUrl, AuthorizationKey, options);
            Database database = await cosmosClient.CreateDatabaseIfNotExistsAsync(DatabaseName);
            Console.WriteLine(database.Id);
            Container container = await database.CreateContainerIfNotExistsAsync(ContainerName,"/SId");
            Console.WriteLine(container.Id);
            List<Task> tasks = new List<Task>();
            foreach (StudentInfo item in lists)
            {
                item.Id = Guid.NewGuid().ToString();// add the line in your code
                tasks.Add(container.CreateItemAsync(item, new PartitionKey(item.SId))
                    .ContinueWith((Task<ItemResponse<StudentInfo>> task) =>
                    {
                        Console.WriteLine("Status: " + task.Result.StatusCode + "    Resource: " + task.Result.Resource.SId);
                    }));
            }
            await Task.WhenAll(tasks);
            Console.ReadLine();
        }
        class StudentInfo
        {            
            public string SId { get; set; }
            public string SName { get; set; }
            [JsonProperty(PropertyName = "id")]// add the code in your custom object
            public string Id { get; set; }//add the code in your custom object

        }
    }

how to insert a vertex in between 2 vertices with edge. Azure Cosmos DB [GREMLIN API]


By : user3463628
Date : March 29 2020, 07:55 AM
will help you , This would be a simple helper method to do the job:
code :
modify = { user, product, version ->

  g.V().has("software","name",product).as("s"). /* this would be your formula vertex     */
    valueMap().
      by(unfold()).as("sm").

    addV("software").as("ns").                 /* create a new vertex                    */

    sideEffect(select("sm").unfold().as("kv"). /* copy properties from the old vertex    */
               select("ns").
               property(select("kv").by(keys),
                        select("kv").by(values))).

    property("version",version).               /* set version on the new vertex          */

    select("s").
    sideEffect(                                /* transfer out-edges                     */
      outE().as("e").
      sideEffect(
        select("ns").
        addE(select("e").by(label)).
          to(select("e").inV()).as("ne").
        select("e").properties().as("p").
        select("ne").
          property(select("p").key(),
                   select("p").value())).
      drop()).
    sideEffect(                                /* transfer in-edges                     */
      inE().as("e").
      not(outV().where(eq("s"))).              /* exclude self-referencing edges        */
      sideEffect(
        select("ns").
        addE(select("e").by(label)).
          from(select("e").outV()).as("ne").
        select("e").properties().as("p").
        select("ne").
        property(select("p").key(),
                 select("p").value())).
      drop()).

    select("ns").
    addE("previous_value").to("s").inV().      /* add edges to previous version and user */
    addE("modified").
      from(V().has("person","name",user)).

    iterate()

}
gremlin> g = TinkerFactory.createModern().traversal()
==>graphtraversalsource[tinkergraph[vertices:6 edges:6], standard]
gremlin> 
gremlin> modify = { user, product, version ->
         ...
.....39> }
==>groovysh_evaluate$_run_closure1@7523d5a1
gremlin> 
gremlin> modify("marko","lop","v2")
gremlin> 
gremlin> g.V().has("name","lop").
......1>   inE().outV().
......2>   path().
......3>     by(values("name","version").fold()).
......4>     by(label).
......5>     by(elementMap())
==>[[lop],previous_value,[id:13,label:software,name:lop,lang:java,version:v2]]
==>[[lop],modified,[id:1,label:person,name:marko,age:29]]
==>[[lop,v2],created,[id:1,label:person,name:marko,age:29]]
==>[[lop,v2],created,[id:4,label:person,name:josh,age:32]]
==>[[lop,v2],created,[id:6,label:person,name:peter,age:35]]
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