create an edge from json

[loadedlux]

Greetings,

Does anyone have any insight on creating an edge from JSON using the graphAPI. When working with a vertex, I can create an empty vertex, retreive the record, and call the fromJSON method.  However, there deosn't appear to be a means for creating an empty edge. Any help would be much appreciated.

Thanks.


[Giulia Brignoli]

Hi loadedlux,

I'm not very clear what you want:

you want to create an edge between two vertex using GraphAPI, right?

Bye

Giulia

[loadedlux]

Yes. But I would like to use JSON to create the edge.

[loadedlux]

Is it not possible to create an edge from JSON using the graph API?

[normanLinux]

I used a javascript function to abstract edge creation from JSON data sent from Angular.  

I was having trouble extracting relevant data from my JSON (needed because of the avstraction) and Alessandro posted this reply - which works perfectly

I hope that it helps you.  This forum is really great for anybody trying to get to grips with Orient!

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try this function with the parameter record {"from_rid": "#12:0","to_rid": "12:1", "edge_type": "friend","edge_properties":{"property1":"value_property", "property2":"value2_property"}}

var obj = JSON.parse(record);

var ridFrom=  obj.from_rid;

var ridTo = obj.to_rid;

var edge_type= obj.edge_type;

var edge_properties= obj.edge_properties;

var property1=edge_properties.property1;

var property2=edge_properties.property2;

var set=" set "+Object.keys(edge_properties)[0] + " = '" + property1 + "', " + 

    Object.keys(edge_properties)[1] + " = '" + property2 + "'"

var query="create edge "+ edge_type + " from " + ridFrom + " to " + ridTo + set ;

var g=orient.getGraph();

g.command('sql',query);

Alessandro

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