| #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 generic dictionary serializer. |
| /// </summary> |
| /// <typeparam name="TKey">The type of keys in the dictionary.</typeparam> |
| /// <typeparam name="TValue">The type of values in the dictionary.</typeparam> |
| public class MapSerializer<TKey, TValue> : SimpleTypeSerializer<IDictionary<TKey, TValue>> |
| { |
| /// <summary> |
| /// Initializes a new instance of the <see cref="MapSerializer{TKey, TValue}" /> class. |
| /// </summary> |
| public MapSerializer() : base(DataType.Map) |
| { |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task WriteValueAsync(IDictionary<TKey, TValue> value, Stream stream, |
| GraphBinaryWriter writer, CancellationToken cancellationToken = default) |
| { |
| await writer.WriteValueAsync(value.Count, stream, false, cancellationToken).ConfigureAwait(false); |
| |
| foreach (var key in value.Keys) |
| { |
| await writer.WriteAsync(key, stream, cancellationToken).ConfigureAwait(false); |
| await writer.WriteAsync(value[key], stream, cancellationToken).ConfigureAwait(false); |
| } |
| } |
| |
| /// <inheritdoc /> |
| protected override async Task<IDictionary<TKey, TValue>> ReadValueAsync(Stream stream, GraphBinaryReader reader, |
| CancellationToken cancellationToken = default) |
| { |
| var length = await stream.ReadIntAsync(cancellationToken).ConfigureAwait(false); |
| var result = new Dictionary<TKey, TValue>(length); |
| |
| for (var i = 0; i < length; i++) |
| { |
| var key = (TKey) await reader.ReadAsync(stream, cancellationToken).ConfigureAwait(false); |
| var value = (TValue) await reader.ReadAsync(stream, cancellationToken).ConfigureAwait(false); |
| result.Add(key, value); |
| } |
| |
| return result; |
| } |
| } |
| } |