Create GLV sample applications

gremlin-dotnet/example/.gitignore

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+/Gremlin.Net.3.7.0/

gremlin-dotnet/example/Example.cs

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+/*
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+*/
+
+using Gremlin;
+using Gremlin.Net.Driver;
+using Gremlin.Net.Driver.Remote;
+using Gremlin.Net.Structure.IO.GraphSON;
+using Gremlin.Net.Process.Traversal;
+
+// Common imports
+using static Gremlin.Net.Process.Traversal.AnonymousTraversalSource;
+using static Gremlin.Net.Process.Traversal.__;
+using static Gremlin.Net.Process.Traversal.P;
+using static Gremlin.Net.Process.Traversal.Order;
+using static Gremlin.Net.Process.Traversal.Operator;
+using static Gremlin.Net.Process.Traversal.Pop;
+using static Gremlin.Net.Process.Traversal.Scope;
+using static Gremlin.Net.Process.Traversal.TextP;
+using static Gremlin.Net.Process.Traversal.Column;
+using static Gremlin.Net.Process.Traversal.Direction;
+using static Gremlin.Net.Process.Traversal.Cardinality;
+using static Gremlin.Net.Process.Traversal.CardinalityValue;
+using static Gremlin.Net.Process.Traversal.T;
+
+
+ConnectionExample();
+BasicGremlinExample();
+ModernTraversalExample();
+
+static void ConnectionExample()
+{
+    var server = new GremlinServer("localhost", 8182);
+
+    // Connecting to the server
+    // using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
+
+    // Connecting to the server with customized configurations
+    using var remoteConnection = new DriverRemoteConnection(new GremlinClient(
+        new GremlinServer(hostname:"localhost", port:8182, enableSsl:false, username:"", password:"")), "g");
+
+    // Specifying a serializer
+    var client = new GremlinClient(server, new GraphSON3MessageSerializer());
+
+    // Creating the graph traversal
+    var g = Traversal().WithRemote(remoteConnection);
+}
+
+static void BasicGremlinExample()
+{
+    var server = new GremlinServer("localhost", 8182);
+    using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
+    var g = Traversal().WithRemote(remoteConnection);
+
+    // Basic Gremlin: adding and retrieving data
+    var v1 = g.AddV("person").Property("name", "marko").Next();
+    var v2 = g.AddV("person").Property("name", "stephen").Next();
+    var v3 = g.AddV("person").Property("name", "vadas").Next();
+
+    // 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(v1).AddE("knows").To(v2).Property("weight", 0.75).Iterate();
+    g.V(v1).AddE("knows").To(v3).Property("weight", 0.75).Iterate();
+
+    // Retrieve the data from the "marko" vertex
+    var marko = g.V().Has("person","name","marko").Values<string>("name").Next();
+    Console.WriteLine("name: " + marko);
+    // Find the "marko" vertex and then traverse to the people he "knows" and return their data
+    var peopleMarkoKnows = g.V().Has("person","name","marko").Out("knows").Values<string>("name").ToList();
+    foreach (var person in peopleMarkoKnows)
+    {
+        Console.WriteLine("marko knows " + person);
+    }
+}
+
+static void ModernTraversalExample()
+{
+    var server = new GremlinServer("localhost", 8182);
+    using var remoteConnection = new DriverRemoteConnection(new GremlinClient(server), "g");
+    var g = Traversal().WithRemote(remoteConnection);
+
+    /*
+    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.
+    */
+    var e1 = g.V(1).BothE().ToList(); // (1)
+    var e2 = g.V(1).BothE().Where(OtherV().HasId(2)).ToList(); // (2)
+    var v1 = g.V(1).Next();
+    var v2 = g.V(2).Next();
+    var e3 = g.V(v1).BothE().Where(OtherV().Is(v2)).ToList(); // (3)
+    var e4 = g.V(v1).OutE().Where(InV().Is(v2)).ToList(); // (4)
+    var e5 = g.V(1).OutE().Where(InV().Has(T.Id, Within(2, 3))).ToList(); // (5)
+    var e6 = g.V(1).Out().Where(__.In().HasId(6)).ToList(); // (6)
+
+    Console.WriteLine(string.Join(", ", e1));
+    Console.WriteLine(string.Join(", ", e2));
+    Console.WriteLine(string.Join(", ", e3));
+    Console.WriteLine(string.Join(", ", e4));
+    Console.WriteLine(string.Join(", ", e5));
+    Console.WriteLine(string.Join(", ", e6));
+
+    /*
+    1. There are three edges from the vertex with the identifier of "1".
+    2. Filter those three edges using the Where()-step using the identifier of the vertex returned by OtherV() to
+       ensure it matches on the vertex of concern, which is the one with an identifier of "2".
+    3. Note that the same traversal will work if there are actual Vertex instances rather than just vertex
+       identifiers.
+    4. The vertex with identifier "1" has all outgoing edges, so it would also be acceptable to use the directional
+       steps of OutE() and InV() since the schema allows it.
+    5. There is also no problem with filtering the terminating side of the traversal on multiple vertices, in this
+       case, vertices with identifiers "2" and "3".
+    6. There’s no reason why the same pattern of exclusion used for edges with Where() can’t work for a vertex
+
+       between two vertices.
+    */
+}

gremlin-dotnet/example/example.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Gremlin.Net" Version="3.7.0" />
+  </ItemGroup>
+
+</Project>

gremlin-dotnet/example/example.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 25.0.1706.4
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "example", "example.csproj", "{29ECA4F3-7C69-446D-8D00-4D396DE33C75}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{29ECA4F3-7C69-446D-8D00-4D396DE33C75}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{29ECA4F3-7C69-446D-8D00-4D396DE33C75}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{29ECA4F3-7C69-446D-8D00-4D396DE33C75}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{29ECA4F3-7C69-446D-8D00-4D396DE33C75}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {FDC873E9-BBF5-41B1-BAE2-5AC9EBBC42DA}
+	EndGlobalSection
+EndGlobal

gremlin-driver/pom.xml

@@ -253,6 +253,15 @@ limitations under the License.
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>example/**</exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
         </plugins>
     </build>
 </project>

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

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+/*
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License.  You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied.  See the License for the
+specific language governing permissions and limitations
+under the License.
+*/
+
+package example;
+
+// Common imports
+import org.apache.tinkerpop.gremlin.driver.MessageSerializer;
+import org.apache.tinkerpop.gremlin.driver.ser.GraphBinaryMessageSerializerV1;
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversalSource;
+
+import static org.apache.tinkerpop.gremlin.process.traversal.AnonymousTraversalSource.traversal;
+import static org.apache.tinkerpop.gremlin.process.traversal.P.*;
+import static org.apache.tinkerpop.gremlin.structure.T.*;
+import static org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__.*;
+
+import org.apache.tinkerpop.gremlin.driver.Client;
+import org.apache.tinkerpop.gremlin.driver.Cluster;
+import org.apache.tinkerpop.gremlin.driver.remote.DriverRemoteConnection;
+import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.__;
+import org.apache.tinkerpop.gremlin.structure.Edge;
+import org.apache.tinkerpop.gremlin.structure.Graph;
+import org.apache.tinkerpop.gremlin.structure.Vertex;
+import org.apache.tinkerpop.gremlin.structure.io.AbstractIoRegistry;
+import org.apache.tinkerpop.gremlin.structure.io.IoRegistry;
+import org.apache.tinkerpop.gremlin.structure.io.binary.TypeSerializerRegistry;
+import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerFactory;
+import org.apache.tinkerpop.gremlin.tinkergraph.structure.TinkerGraph;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+public class Example {
+
+    public static void main(String[] args) throws Exception {
+        connectionExample();
+        basicGremlinExample();
+        modernTraversalExample();
+    }
+
+    public static void connectionExample() throws Exception {
+        // Creating an embedded graph
+        Graph graph = TinkerGraph.open();
+        GraphTraversalSource g = traversal().withEmbedded(graph);
+
+        // Connecting to the server
+        g = traversal().withRemote(DriverRemoteConnection.using("localhost", 8182, "g"));
+
+        // Connecting to the server with a configurations file
+        g = traversal().withRemote("gremlin-driver/src/main/java/example/conf/remote-graph.properties");
+
+        // Connecting and customizing configurations with a cluster
+        // See reference/#gremlin-java-configuration for full list of configurations
+        Cluster cluster = Cluster.build().
+            channelizer("org.apache.tinkerpop.gremlin.driver.Channelizer$HttpChannelizer").
+            keepAliveInterval(180000).
+            maxConnectionPoolSize(8).
+            path("/gremlin").
+            port(8182).
+            serializer(new GraphBinaryMessageSerializerV1()).
+            create();
+        g = traversal().withRemote(DriverRemoteConnection.using(cluster, "g"));
+
+        // Connecting and specifying a serializer
+        IoRegistry registry = new FakeIoRegistry(); // an IoRegistry instance exposed by a specific graph provider
+        TypeSerializerRegistry typeSerializerRegistry = TypeSerializerRegistry.build().addRegistry(registry).create();
+        MessageSerializer serializer = new GraphBinaryMessageSerializerV1(typeSerializerRegistry);
+        cluster = Cluster.build().
+            serializer(serializer).
+            create();
+        Client client = cluster.connect();
+        g = traversal().withRemote(DriverRemoteConnection.using(client, "g"));
+
+        // Cleanup
+        g.close();
+    }
+    public static class FakeIoRegistry extends AbstractIoRegistry {
+    }
+
+    private static void basicGremlinExample() {
+        Graph graph = TinkerGraph.open();
+        GraphTraversalSource g = traversal().withEmbedded(graph);
+
+        // Basic Gremlin: adding and retrieving data
+        Vertex v1 = g.addV("person").property("name","marko").next();
+        Vertex v2 = g.addV("person").property("name","stephen").next();
+        Vertex v3 = g.addV("person").property("name","vadas").next();
+
+        // 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(v1).addE("knows").to(v2).property("weight",0.75).iterate();
+        g.V(v1).addE("knows").to(v3).property("weight",0.75).iterate();
+
+        // Retrieve the data from the "marko" vertex
+        Object marko = g.V().has("person","name","marko").values("name").next();
+        System.out.println("name: " + marko);
+
+        // Find the "marko" vertex and then traverse to the people he "knows" and return their data
+        List<Object> peopleMarkoKnows = g.V().has("person","name","marko").out("knows").values("name").toList();
+        for (Object person : peopleMarkoKnows) {
+            System.out.println("marko knows " + person);
+        }
+    }
+
+    private static void modernTraversalExample() {
+        // Performs basic traversals on the Modern toy graph which can be created using TinkerFactory
+        Graph modern = TinkerFactory.createModern();
+        GraphTraversalSource g = traversal().withEmbedded(modern);
+
+        List<Edge> e1 = g.V(1).bothE().toList(); // (1)
+        List<Edge> e2 = g.V(1).bothE().where(otherV().hasId(2)).toList(); // (2)
+        Vertex v1 = g.V(1).next();
+        Vertex v2 = g.V(2).next();
+        List<Edge> e3 = g.V(v1).bothE().where(otherV().is(v2)).toList(); // (3)
+        List<Edge> e4 = g.V(v1).outE().where(inV().is(v2)).toList(); // (4)
+        List<Edge> e5 = g.V(1).outE().where(inV().has(id, within(2,3))).toList(); // (5)
+        List<Vertex> e6 = g.V(1).out().where(in().hasId(6)).toList(); // (6)
+
+        System.out.println("1: " + e1.toString());
+        System.out.println("2: " + e2.toString());
+        System.out.println("3: " + e3.toString());
+        System.out.println("4: " + e4.toString());
+        System.out.println("5: " + e5.toString());
+        System.out.println("6: " + e6.toString());
+
+        /*
+        1. There are three edges from the vertex with the identifier of "1".
+        2. Filter those three edges using the where()-step using the identifier of the vertex returned by otherV() to
+           ensure it matches on the vertex of concern, which is the one with an identifier of "2".
+        3. Note that the same traversal will work if there are actual Vertex instances rather than just vertex
+           identifiers.
+        4. The vertex with identifier "1" has all outgoing edges, so it would also be acceptable to use the directional
+           steps of outE() and inV() since the schema allows it.
+        5. There is also no problem with filtering the terminating side of the traversal on multiple vertices, in this
+           case, vertices with identifiers "2" and "3".
+        6. There’s no reason why the same pattern of exclusion used for edges with where() can’t work for a vertex
+           between two vertices.
+        */
+    }
+}

gremlin-driver/src/main/java/example/conf/remote-graph.properties

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+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+gremlin.remote.remoteConnectionClass=org.apache.tinkerpop.gremlin.driver.remote.DriverRemoteConnection
+gremlin.remote.driver.sourceName=g