Method main

samples/DgraphJavaSample/src/main/java/App.java:41–88

(final String[] args)

  }

  public static void main(final String[] args) {
    DgraphClient dgraphClient = createDgraphClient(false);

    // Initialize
    dgraphClient.alter(Operation.newBuilder().setDropAll(true).build());

    // Set schema
    String schema = "name: string @index(exact) .";
    Operation operation = Operation.newBuilder().setSchema(schema).build();
    dgraphClient.alter(operation);

    Gson gson = new Gson(); // For JSON encode/decode
    Transaction txn = dgraphClient.newTransaction();
    try {
      // Create data
      Person p = new Person();
      p.name = "Alice";

      // Serialize it
      String json = gson.toJson(p);

      // Run mutation
      Mutation mutation =
          Mutation.newBuilder().setSetJson(ByteString.copyFromUtf8(json.toString())).build();
      txn.mutate(mutation);
      txn.commit();

    } finally {
      txn.discard();
    }
    // Query
    String query =
        "query all($a: string){
" + "all(func: eq(name, $a)) {
" + "    name
" + "  }
" + "}";
    Map<String, String> vars = Collections.singletonMap("$a", "Alice");
    Response res = dgraphClient.newTransaction().queryWithVars(query, vars);

    // Deserialize
    People ppl = gson.fromJson(res.getJson().toStringUtf8(), People.class);

    // Print results
    System.out.printf("people found: %d
", ppl.all.size());
    ppl.all.forEach(person -> System.out.println(person.name));
  }

  static class Person {
    String name;