| #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 System.IO; |
| using System.Threading; |
| using System.Threading.Tasks; |
| |
| namespace Gremlin.Net.Structure.IO.GraphBinary.Types |
| { |
| /// <summary> |
| /// A <see cref="Path"/> serializer. |
| /// </summary> |
| public class PathSerializer : SimpleTypeSerializer<Path> |
| { |
| /// <summary> |
| /// Initializes a new instance of the <see cref="PathSerializer" /> class. |
| /// </summary> |
| public PathSerializer() : base(DataType.Path) |
| { |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task WriteValueAsync(Path value, Stream stream, GraphBinaryWriter writer, |
| CancellationToken cancellationToken = default) |
| { |
| await writer.WriteAsync(value.Labels, stream, cancellationToken).ConfigureAwait(false); |
| await writer.WriteAsync(value.Objects, stream, cancellationToken).ConfigureAwait(false); |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task<Path> ReadValueAsync(Stream stream, GraphBinaryReader reader, |
| CancellationToken cancellationToken = default) |
| { |
| var readLabelObjects = |
| (List<object>?)await reader.ReadAsync(stream, cancellationToken).ConfigureAwait(false); |
| if (readLabelObjects == null) throw new IOException("Read null, but expected a list of labels"); |
| var labels = new List<ISet<string>>(); |
| foreach (var labelObjectList in readLabelObjects) |
| { |
| var labelSet = new HashSet<string>(); |
| foreach (var labelObj in (HashSet<object>) labelObjectList) |
| { |
| labelSet.Add((string) labelObj); |
| } |
| labels.Add(labelSet); |
| } |
| |
| var objects = (List<object?>?) await reader.ReadAsync(stream, cancellationToken).ConfigureAwait(false); |
| if (objects == null) throw new IOException("Read null, but expected a list of objects"); |
| return new Path(labels, objects); |
| } |
| } |
| } |