Creating vertex with many properties

[Homesh Rawat]

Hi ,

I need to create a vertex with different properties and each property may have a different data type. 

I checked tinkerpop's documentation and I could see that to add properties, we can pass only two methods key and value in the property method.

g.addV('person').property('name','stephen')

However, in my use case I want to add multiple properties with different datatype at once. As of now I am looping on the key array and for every key executing the statement. But I don't believe this is the optimum way to do this.

GraphStatement statement;

GraphResultSet grs;
for (int i=0; i<keys.size(); i++) {

    statement = DseGraph.statementFromTraversal(g.V().has("name","homesh").property(keys.get(i), values.get(i)));                                    
         grs = session.executeGraph(statement);

}

Can you please suggest me what is the better way to do this.

--

Homesh

[Kevin Gallardo]

Hi Homesh, 

.property() calls can be chained.

Example:

g.addV("person").property("id", UUID.randomUUID()).property("name", "marko").property("age", 29)

Not sure I understood your example right but in a loop, you can re-assign a traversal and add a property() step for each of the keys you have:

List keys = ...;

List values = ...;

GraphTraversal mutation = DseGraph.traversal().addV("person");

for (int i = ; i < keys.size(); i++) {

    mutation = mutation.property(keys.get(i), values.get(i));

}

dseSession.executeGraph(statementFromTraversal(mutation));

There is no step in TinkerPop as far as I can see in the docs that allows to add more than one property at a time.

Hope that helps.

On Thu, May 10, 2018 at 5:05 AM, Homesh Rawat <homes...@gmail.com> wrote:

Hi ,

I need to create a vertex with different properties and each property may have a different data type. 

I checked tinkerpop's documentation and I could see that to add properties, we can pass only two methods key and value in the property method.

g.addV('person').property('name','stephen')

However, in my use case I want to add multiple properties with different datatype at once. As of now I am looping on the key array and for every key executing the statement. But I don't believe this is the optimum way to do this.

GraphStatement statement;

GraphResultSet grs;
for (int i=; i<keys.size(); i++) {

    statement = DseGraph.statementFromTraversal(g.V().has("name","homesh").property(keys.get(i), values.get(i)));                                    
         grs = session.executeGraph(statement);

}

Can you please suggest me what is the better way to do this.

--

Homesh

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Kévin Gallardo.

kgdo.me

Software Engineer in Developers Tools Team,

DataStax.