Edit Java modern comment, add simple JS query to test config, add wai…

…ts after Iterate() in Go

gremlin-driver/src/main/java/example/Example.java

@@ -122,11 +122,7 @@ private static void basicGremlinExample() {
     }
 
     private static void modernTraversalExample() {
-        /*
-        This example requires the Modern toy graph to be preloaded upon launching the Gremlin server.
-        For details, see https://tinkerpop.apache.org/docs/current/reference/#gremlin-server-docker-image and use
-        conf/gremlin-server-modern.yaml.
-        */
+        // Performs basic traversals on the Modern toy graph which can be created using TinkerFactory
         Graph modern = TinkerFactory.createModern();
         GraphTraversalSource g = traversal().withEmbedded(modern);
 

gremlin-go/example/example.go

@@ -21,6 +21,7 @@ package main
 
 import (
 	"fmt"
+
 	gremlingo "github.com/apache/tinkerpop/gremlin-go/driver"
 )
 
@@ -83,8 +84,14 @@ func basicGremlinExample() {
 
 	// Be sure to use a terminating step like next() or iterate() so that the traversal "executes"
 	// Iterate() does not return any data and is used to just generate side-effects (i.e. write data to the database)
-	g.V(v1Vertex).AddE("knows").To(v2Vertex).Property("weight", 0.75).Iterate()
-	g.V(v1Vertex).AddE("knows").To(v3Vertex).Property("weight", 0.75).Iterate()
+	promise := g.V(v1Vertex).AddE("knows").To(v2Vertex).Property("weight", 0.75).Iterate()
+	err = <-promise
+	promise = g.V(v1Vertex).AddE("knows").To(v3Vertex).Property("weight", 0.75).Iterate()
+	err = <-promise
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
 
 	// Retrieve the data from the "marko" vertex
 	marko, err := g.V().Has("person", "name", "marko").Values("name").Next()
@@ -95,7 +102,6 @@ func basicGremlinExample() {
 	for _, person := range peopleMarkoKnows {
 		fmt.Println("marko knows", person.GetString())
 	}
-
 }
 
 func modernTraversalExample() {
@@ -112,9 +118,6 @@ func modernTraversalExample() {
 	  For details, see https://tinkerpop.apache.org/docs/current/reference/#gremlin-server-docker-image and use
 	  conf/gremlin-server-modern.yaml.
 	*/
-	//e1, err := g.V().Next() // (1)
-	//fmt.Println(e1)
-
 	e1, err := g.V(1).BothE().ToList()                            // (1)
 	e2, err := g.V().BothE().Where(__.OtherV().HasId(2)).ToList() // (2)
 	v1, err := g.V(1).Next()

gremlin-javascript/example/example.js

@@ -44,27 +44,31 @@ const serializer = gremlin.structure.io.graphserializer;
 const testing = Direction.to;
 
 async function main() {
-    await connectionExample();
+    // await connectionExample();
     await basicGremlinExample();
     await modernTraversalExample();
 }
 
-
-
 async function connectionExample() {
     // Connecting to the server
     let dc = new DriverRemoteConnection('ws://localhost:8182/gremlin');
     let g = traversal().withRemote(dc);
 
     // Connecting and customizing configurations
-    g = traversal().withRemote(new DriverRemoteConnection('ws://localhost:8182/gremlin', {
+    dc = new DriverRemoteConnection('ws://localhost:8182/gremlin', {
         mimeType: 'application/vnd.gremlin-v3.0+json',
         reader: serializer,
         writer: serializer,
         rejectUnauthorized: false,
         traversalSource: 'g',
-    }));
+    })
+    g = traversal().withRemote(dc);
 
+    // Simple query to verify connection
+    const v = await g.addV().iterate();
+    const count = await g.V().count().next();
+    console.log(count.value);
+
     // Cleanup
     await dc.close();
 }
@@ -103,7 +107,6 @@ async function modernTraversalExample() {
     For details, see https://tinkerpop.apache.org/docs/current/reference/#gremlin-server-docker-image and use
     conf/gremlin-server-modern.yaml.
     */
-
     let dc = new DriverRemoteConnection('ws://localhost:8182/gremlin');
     let g = traversal().withRemote(dc);