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Posted to commits@tinkerpop.apache.org by fl...@apache.org on 2018/03/14 19:12:01 UTC
[50/50] tinkerpop git commit: TINKERPOP-1919 Add Lambda support to
Gremlin.Net
TINKERPOP-1919 Add Lambda support to Gremlin.Net
This adds a Lambda class that can be used to construct Groovy or Python
lambdas. The Lambda class implements all interfaces that mirror Javas
functional interfaces like Function.
Project: http://git-wip-us.apache.org/repos/asf/tinkerpop/repo
Commit: http://git-wip-us.apache.org/repos/asf/tinkerpop/commit/c7a82c6e
Tree: http://git-wip-us.apache.org/repos/asf/tinkerpop/tree/c7a82c6e
Diff: http://git-wip-us.apache.org/repos/asf/tinkerpop/diff/c7a82c6e
Branch: refs/heads/TINKERPOP-1854
Commit: c7a82c6ed02e226b40bc1054439328b558b63e2c
Parents: 5cf1cba
Author: Florian Hockmann <fh...@florian-hockmann.de>
Authored: Wed Mar 14 18:56:47 2018 +0100
Committer: Florian Hockmann <fh...@florian-hockmann.de>
Committed: Wed Mar 14 18:56:47 2018 +0100
----------------------------------------------------------------------
CHANGELOG.asciidoc | 1 +
docs/src/reference/gremlin-variants.asciidoc | 29 ++++++--
.../upgrade/release-3.2.x-incubating.asciidoc | 7 ++
gremlin-dotnet/glv/generate.groovy | 4 +-
.../Process/Traversal/GraphTraversalSource.cs | 52 +++++++++++++-
.../Gremlin.Net/Process/Traversal/ISupplier.cs | 32 +++++++++
.../Process/Traversal/IUnaryOperator.cs | 33 +++++++++
.../src/Gremlin.Net/Process/Traversal/Lambda.cs | 72 ++++++++++++++++++++
.../Structure/IO/GraphSON/GraphSONWriter.cs | 3 +-
.../Structure/IO/GraphSON/LambdaSerializer.cs | 43 ++++++++++++
.../Gherkin/CommonSteps.cs | 2 +-
.../Gherkin/IgnoreException.cs | 4 --
.../TraversalEvaluation/TraversalParser.cs | 2 +-
.../IO/GraphSON/GraphSONWriterTests.cs | 13 ++++
14 files changed, 282 insertions(+), 15 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/CHANGELOG.asciidoc
----------------------------------------------------------------------
diff --git a/CHANGELOG.asciidoc b/CHANGELOG.asciidoc
index 97b90a5..fb9b252 100644
--- a/CHANGELOG.asciidoc
+++ b/CHANGELOG.asciidoc
@@ -23,6 +23,7 @@ image::https://raw.githubusercontent.com/apache/tinkerpop/master/docs/static/ima
[[release-3-2-8]]
=== TinkerPop 3.2.8 (Release Date: NOT OFFICIALLY RELEASED YET)
+* Added a `Lambda` class to Gremlin.Net that makes it possible to use Groovy and Python lambdas with Gremlin.Net.
* Enums are now represented as classes in Gremlin.Net which allows to use them as arguments in more steps.
* Bumped to Groovy 2.4.14.
* Added `checkAdjacentVertices` option to `SubgraphStrategy`.
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/docs/src/reference/gremlin-variants.asciidoc
----------------------------------------------------------------------
diff --git a/docs/src/reference/gremlin-variants.asciidoc b/docs/src/reference/gremlin-variants.asciidoc
index ace8119..bf8c8b1 100644
--- a/docs/src/reference/gremlin-variants.asciidoc
+++ b/docs/src/reference/gremlin-variants.asciidoc
@@ -46,7 +46,7 @@ implementation of Gremlin and serves as the foundation by which all other Gremli
=== The Lambda Solution
Supporting link:https://en.wikipedia.org/wiki/Anonymous_function[anonymous functions] across languages is difficult as
-most language do not support lambda introspection and thus, code analysis. In Gremlin-Java, Java8 lambdas can be leveraged.
+most languages do not support lambda introspection and thus, code analysis. In Gremlin-Java, Java8 lambdas can be leveraged.
[source,java]
g.V().out("knows").map(t -> t.get().value("name") + " is the friend name") <1>
@@ -281,7 +281,7 @@ re-construction machine-side.
=== The Lambda Solution
Supporting link:https://en.wikipedia.org/wiki/Anonymous_function[anonymous functions] across languages is difficult as
-most language do not support lambda introspection and thus, code analysis. In Gremlin-Python,
+most languages do not support lambda introspection and thus, code analysis. In Gremlin-Python,
a link:https://docs.python.org/2/reference/expressions.html#lambda[Python lambda] should be represented as a zero-arg callable
that returns a string representation of a lambda. The default lambda language is `gremlin-python` and can be changed via
`gremlin_python.statics.default_lambda_language`. When the lambda is represented in `Bytecode` its language is encoded
@@ -343,8 +343,10 @@ var g = graph.Traversal().WithRemote(new DriverRemoteConnection(new GremlinClien
When a traversal from the `GraphTraversalSource` is iterated, the traversal’s `Bytecode` is sent over the wire via the registered
`IRemoteConnection`. The bytecode is used to construct the equivalent traversal at the remote traversal source.
-Since Gremlin.Net currently doesn't support lambda expressions, all traversals can be translated to Gremlin-Java on the remote
-location (e.g. Gremlin Server).
+Moreover, typically the bytecode is analyzed to determine which language the bytecode should be translated to. If the traversal
+does not contain lambdas, the remote location (e.g. Gremlin Server) will typically
+use Gremlin-Java. If it has lambdas written in Groovy, it will use Gremlin-Groovy (e.g. `GremlinGroovyScriptEngine`).
+Likewise, if it has lambdas represented in Python, it will use Gremlin-Python (e.g. `GremlinJythonScriptEngine`).
IMPORTANT: Gremlin.Net’s `ITraversal` interface supports the standard Gremlin methods such as `Next()`, `NextTraverser()`, `ToSet()`,
`ToList()`, etc. Such "terminal" methods trigger the evaluation of the traversal.
@@ -433,6 +435,25 @@ NOTE: Many of the TraversalStrategy classes in Gremlin.Net are proxies to the re
JVM-based Gremlin traversal machine. As such, their `Apply(ITraversal)` method does nothing. However, the strategy is
encoded in the Gremlin.Net bytecode and transmitted to the Gremlin traversal machine for re-construction machine-side.
+=== The Lambda Solution
+
+Supporting link:https://en.wikipedia.org/wiki/Anonymous_function[anonymous functions] across languages is difficult as
+most languages do not support lambda introspection and thus, code analysis. While Gremlin.Net doesn't support C# lambdas, it
+is still able to represent lambdas in other languages. When the lambda is represented in `Bytecode` its language is encoded
+such that the remote connection host can infer which translator and ultimate execution engine to use.
+
+[source,csharp]
+----
+g.V().Out().Map<int>(Lambda.Groovy("it.get().value('name').length()")).Sum<int>().ToList(); <1>
+g.V().Out().Map<int>(Lambda.Python("lambda x: len(x.get().value('name'))")).Sum<int>().ToList(); <2>
+----
+
+<1> `Lambda.Groovy()` can be used to create a Groovy lambda.
+<2> `Lambda.Python()` can be used to create a Python lambda.
+
+The `Lambda` class implements interfaces like `IFunction` and `IPredicate` that mirror their Java counterparts which makes it possible
+to use lambdas with Gremlin.Net for the same steps as in Gremlin-Java.
+
[[gremlin-javascript]]
== Gremlin-JavaScript
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/docs/src/upgrade/release-3.2.x-incubating.asciidoc
----------------------------------------------------------------------
diff --git a/docs/src/upgrade/release-3.2.x-incubating.asciidoc b/docs/src/upgrade/release-3.2.x-incubating.asciidoc
index 0848843..edc7f79 100644
--- a/docs/src/upgrade/release-3.2.x-incubating.asciidoc
+++ b/docs/src/upgrade/release-3.2.x-incubating.asciidoc
@@ -42,6 +42,13 @@ by clients that might mysteriously disappear without properly closing their conn
See: link:https://issues.apache.org/jira/browse/TINKERPOP-1726[TINKERPOP-1726]
+==== Gremlin.Net Lambdas
+
+Gremlin.Net now has a `Lambda` class that can be used to construct Groovy or Java lambdas which will be evaluated on the
+server.
+
+See: link:https://issues.apache.org/jira/browse/TINKERPOP-1854[TINKERPOP-1854], link:http://tinkerpop.apache.org/docs/3.2.8/reference/#_the_lambda_solution_3[Reference Documentation - Gremlin.Net - The Lambda Solution].
+
==== Gremlin.Net Tokens Improved
The various Gremlin tokens (e.g. `T`, `Order`, `Operator`, etc.) that were implemented as Enums before in Gremlin.Net
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/glv/generate.groovy
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/glv/generate.groovy b/gremlin-dotnet/glv/generate.groovy
index 5057ff8..10b1008 100644
--- a/gremlin-dotnet/glv/generate.groovy
+++ b/gremlin-dotnet/glv/generate.groovy
@@ -54,10 +54,10 @@ def toCSharpTypeMap = ["Long": "long",
"TraversalStrategy[]": "ITraversalStrategy[]",
"Function": "IFunction",
"BiFunction": "IBiFunction",
- "UnaryOperator": "object",
+ "UnaryOperator": "IUnaryOperator",
"BinaryOperator": "IBinaryOperator",
"Consumer": "IConsumer",
- "Supplier": "object",
+ "Supplier": "ISupplier",
"Comparator": "IComparator",
"VertexProgram": "object"]
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs
index 9c32559..7115016 100644
--- a/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs
+++ b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/GraphTraversalSource.cs
@@ -104,7 +104,7 @@ namespace Gremlin.Net.Process.Traversal
return source;
}
- public GraphTraversalSource WithSack(object initialValue, object splitOperator)
+ public GraphTraversalSource WithSack(object initialValue, IUnaryOperator splitOperator)
{
var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
new Bytecode(Bytecode));
@@ -112,7 +112,39 @@ namespace Gremlin.Net.Process.Traversal
return source;
}
- public GraphTraversalSource WithSack(object initialValue, object splitOperator, IBinaryOperator mergeOperator)
+ public GraphTraversalSource WithSack(object initialValue, IUnaryOperator splitOperator, IBinaryOperator mergeOperator)
+ {
+ var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
+ new Bytecode(Bytecode));
+ source.Bytecode.AddSource("withSack", initialValue, splitOperator, mergeOperator);
+ return source;
+ }
+
+ public GraphTraversalSource WithSack(ISupplier initialValue)
+ {
+ var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
+ new Bytecode(Bytecode));
+ source.Bytecode.AddSource("withSack", initialValue);
+ return source;
+ }
+
+ public GraphTraversalSource WithSack(ISupplier initialValue, IBinaryOperator mergeOperator)
+ {
+ var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
+ new Bytecode(Bytecode));
+ source.Bytecode.AddSource("withSack", initialValue, mergeOperator);
+ return source;
+ }
+
+ public GraphTraversalSource WithSack(ISupplier initialValue, IUnaryOperator splitOperator)
+ {
+ var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
+ new Bytecode(Bytecode));
+ source.Bytecode.AddSource("withSack", initialValue, splitOperator);
+ return source;
+ }
+
+ public GraphTraversalSource WithSack(ISupplier initialValue, IUnaryOperator splitOperator, IBinaryOperator mergeOperator)
{
var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
new Bytecode(Bytecode));
@@ -136,6 +168,22 @@ namespace Gremlin.Net.Process.Traversal
return source;
}
+ public GraphTraversalSource WithSideEffect(string key, ISupplier initialValue)
+ {
+ var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
+ new Bytecode(Bytecode));
+ source.Bytecode.AddSource("withSideEffect", key, initialValue);
+ return source;
+ }
+
+ public GraphTraversalSource WithSideEffect(string key, ISupplier initialValue, IBinaryOperator reducer)
+ {
+ var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
+ new Bytecode(Bytecode));
+ source.Bytecode.AddSource("withSideEffect", key, initialValue, reducer);
+ return source;
+ }
+
public GraphTraversalSource WithStrategies(params ITraversalStrategy[] traversalStrategies)
{
var source = new GraphTraversalSource(new List<ITraversalStrategy>(TraversalStrategies),
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/ISupplier.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/ISupplier.cs b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/ISupplier.cs
new file mode 100644
index 0000000..b1dda13
--- /dev/null
+++ b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/ISupplier.cs
@@ -0,0 +1,32 @@
+#region License
+
+/*
+ * 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.
+ */
+
+#endregion
+
+namespace Gremlin.Net.Process.Traversal
+{
+ /// <summary>
+ /// Represents a supplier of results
+ /// </summary>
+ public interface ISupplier
+ {
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/IUnaryOperator.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/IUnaryOperator.cs b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/IUnaryOperator.cs
new file mode 100644
index 0000000..b57be02
--- /dev/null
+++ b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/IUnaryOperator.cs
@@ -0,0 +1,33 @@
+#region License
+
+/*
+ * 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.
+ */
+
+#endregion
+
+namespace Gremlin.Net.Process.Traversal
+{
+ /// <summary>
+ /// Represents an operation on a single operand that produces a result of the same type as its operand. This is a
+ /// specialization of Function for the case where the operand and result are of the same type.
+ /// </summary>
+ public interface IUnaryOperator : IFunction
+ {
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Lambda.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Lambda.cs b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Lambda.cs
new file mode 100644
index 0000000..21849ef
--- /dev/null
+++ b/gremlin-dotnet/src/Gremlin.Net/Process/Traversal/Lambda.cs
@@ -0,0 +1,72 @@
+#region License
+
+/*
+ * 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.
+ */
+
+#endregion
+
+namespace Gremlin.Net.Process.Traversal
+{
+ /// <summary>
+ /// Represents a lambda.
+ /// </summary>
+ public class Lambda : IFunction, IBiFunction, IPredicate, IUnaryOperator, IBinaryOperator, IComparator, IConsumer,
+ ISupplier
+ {
+ private const int DefaultArgument = -1;
+
+ private Lambda(string expression, string language)
+ {
+ LambdaExpression = expression;
+ Language = language;
+ }
+
+ /// <summary>
+ /// Gets the lambda expression.
+ /// </summary>
+ public string LambdaExpression { get; }
+
+ /// <summary>
+ /// Gets the language of this lambda.
+ /// </summary>
+ public string Language { get; }
+
+ internal object Arguments => DefaultArgument;
+
+ /// <summary>
+ /// Creates a new Groovy <see cref="Lambda"/>.
+ /// </summary>
+ /// <param name="expression">The lambda expression.</param>
+ /// <returns>The created <see cref="Lambda"/>.</returns>
+ public static Lambda Groovy(string expression)
+ {
+ return new Lambda(expression, "gremlin-groovy");
+ }
+
+ /// <summary>
+ /// Creates a new Python <see cref="Lambda"/>.
+ /// </summary>
+ /// <param name="expression">The lambda expression.</param>
+ /// <returns>The created <see cref="Lambda"/>.</returns>
+ public static Lambda Python(string expression)
+ {
+ return new Lambda(expression, "gremlin-python");
+ }
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/GraphSONWriter.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/GraphSONWriter.cs b/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/GraphSONWriter.cs
index f23d80d..826d608 100644
--- a/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/GraphSONWriter.cs
+++ b/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/GraphSONWriter.cs
@@ -59,7 +59,8 @@ namespace Gremlin.Net.Structure.IO.GraphSON
{typeof(Edge), new EdgeSerializer()},
{typeof(Property), new PropertySerializer()},
{typeof(VertexProperty), new VertexPropertySerializer()},
- {typeof(AbstractTraversalStrategy), new TraversalStrategySerializer()}
+ {typeof(AbstractTraversalStrategy), new TraversalStrategySerializer()},
+ {typeof(Lambda), new LambdaSerializer()}
};
/// <summary>
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/LambdaSerializer.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/LambdaSerializer.cs b/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/LambdaSerializer.cs
new file mode 100644
index 0000000..fa739fd
--- /dev/null
+++ b/gremlin-dotnet/src/Gremlin.Net/Structure/IO/GraphSON/LambdaSerializer.cs
@@ -0,0 +1,43 @@
+#region License
+
+/*
+ * 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.
+ */
+
+#endregion
+
+using System.Collections.Generic;
+using Gremlin.Net.Process.Traversal;
+
+namespace Gremlin.Net.Structure.IO.GraphSON
+{
+ internal class LambdaSerializer : IGraphSONSerializer
+ {
+ public Dictionary<string, dynamic> Dictify(dynamic objectData, GraphSONWriter writer)
+ {
+ Lambda lambda = objectData;
+ var valueDict = new Dictionary<string, dynamic>
+ {
+ {"script", lambda.LambdaExpression},
+ {"language", lambda.Language},
+ {"arguments", lambda.Arguments}
+ };
+ return GraphSONUtil.ToTypedValue(nameof(Lambda), valueDict);
+ }
+ }
+}
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs b/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs
index 0abc247..dd96474 100644
--- a/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs
+++ b/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/CommonSteps.cs
@@ -233,7 +233,7 @@ namespace Gremlin.Net.IntegrationTest.Gherkin
private static object ToLambda(string stringLambda, string graphName)
{
- throw new IgnoreException(IgnoreReason.LambdaNotSupported);
+ return Lambda.Groovy(stringLambda);
}
private static object ToNumber(string stringNumber, string graphName)
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/IgnoreException.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/IgnoreException.cs b/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/IgnoreException.cs
index fd226bf..9aa5213 100644
--- a/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/IgnoreException.cs
+++ b/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/IgnoreException.cs
@@ -40,9 +40,6 @@ namespace Gremlin.Net.IntegrationTest.Gherkin
string reasonSuffix = null;
switch (reason)
{
- case IgnoreReason.LambdaNotSupported:
- reasonSuffix = " because lambdas are not supported in Gremlin.NET (TINKERPOP-1854)";
- break;
case IgnoreReason.PWithinWrapsArgumentsInArray:
reasonSuffix = " because P.Within() arguments are incorrectly wrapped in an array (TINKERPOP-1920)";
break;
@@ -56,7 +53,6 @@ namespace Gremlin.Net.IntegrationTest.Gherkin
public enum IgnoreReason
{
- LambdaNotSupported,
PWithinWrapsArgumentsInArray,
PNotDeserializationProblem
}
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs b/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs
index 11145da..7e1486c 100644
--- a/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs
+++ b/gremlin-dotnet/test/Gremlin.Net.IntegrationTest/Gherkin/TraversalEvaluation/TraversalParser.cs
@@ -398,7 +398,7 @@ namespace Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation
{
return ParseNumber(text, ref i);
}
- if (text.Substring(i, 3).StartsWith("__."))
+ if (text.Length >= i + 3 && text.Substring(i, 3).StartsWith("__."))
{
var startIndex = i;
var tokens = ParseTokens(text, ref i);
http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/c7a82c6e/gremlin-dotnet/test/Gremlin.Net.UnitTest/Structure/IO/GraphSON/GraphSONWriterTests.cs
----------------------------------------------------------------------
diff --git a/gremlin-dotnet/test/Gremlin.Net.UnitTest/Structure/IO/GraphSON/GraphSONWriterTests.cs b/gremlin-dotnet/test/Gremlin.Net.UnitTest/Structure/IO/GraphSON/GraphSONWriterTests.cs
index 3e2d307..54dc8f3 100644
--- a/gremlin-dotnet/test/Gremlin.Net.UnitTest/Structure/IO/GraphSON/GraphSONWriterTests.cs
+++ b/gremlin-dotnet/test/Gremlin.Net.UnitTest/Structure/IO/GraphSON/GraphSONWriterTests.cs
@@ -333,6 +333,19 @@ namespace Gremlin.Net.UnitTest.Structure.IO.GraphSON
const string expected = "{\"@type\":\"g:SubgraphStrategy\",\"@value\":{}}";
Assert.Equal(expected, graphSon);
}
+
+ [Fact]
+ public void ShouldSerializeLambda()
+ {
+ var writer = CreateStandardGraphSONWriter();
+ var lambda = Lambda.Groovy("{ it.get() }");
+
+ var graphSon = writer.WriteObject(lambda);
+
+ const string expected =
+ "{\"@type\":\"g:Lambda\",\"@value\":{\"script\":\"{ it.get() }\",\"language\":\"gremlin-groovy\",\"arguments\":-1}}";
+ Assert.Equal(expected, graphSon);
+ }
}
internal class TestGraphSONSerializer : IGraphSONSerializer