Loading and writing data using GraphSON

The Tinkerpop GraphSON Reader can be used to load and write data.

Start the Gremlin console.
Start a graph instance and create the schema.
Use the DSE Graph Loader to load the GraphSON file.

Writing data out of the graph into a GraphSON file while capturing the original data types of the inserted data can be accomplished with a short script:

gremlin> f = new FileOutputStream("/tmp/recipe_lossless.json");
mapper = graph.io(graphson()).mapper().embedTypes(true).create();
graph.io(graphson()).writer().mapper(mapper).create().writeVertex(f,g.V().next(),BOTH)

==>null

A sample of the output shows the class information and data types:

{
  "@class":"java.util.HashMap",
  "id":{
    "@class":"java.util.HashMap",
    "~label":"meal",
    "member_id":["java.lang.Long",25],
    "community_id":1989847424
  },
  "label":"meal",

Loading and writing data using GraphSON

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