GFramework/GFramework.Cqrs/Cqrs/Command/AbstractCommandHandler.cs
GeWuYou e36c80229a feat(cqrs): 添加CQRS处理器基类和测试运行时支持
- 引入AbstractCommandHandler、AbstractQueryHandler等各类处理器基类
- 实现CqrsContextAwareHandlerBase提供上下文感知功能
- 添加CqrsTestRuntime为测试项目提供CQRS运行时访问入口
- 创建AbstractCqrsHandlerContextTests验证上下文注入行为
- 支持命令、查询、通知及流式处理的各种抽象基类实现
2026-04-15 20:34:08 +08:00

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// Copyright (c) 2026 GeWuYou
// Licensed 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 GFramework.Cqrs.Abstractions.Cqrs;
using GFramework.Cqrs.Abstractions.Cqrs.Command;
namespace GFramework.Cqrs.Cqrs.Command;
/// <summary>
/// 抽象命令处理器基类
/// 继承自轻量 CQRS 上下文基类并实现 IRequestHandler 接口,为具体的命令处理器提供基础功能。
/// 框架会在每次分发前注入当前架构上下文,因此派生类可以通过 Context 访问架构级服务。
/// </summary>
/// <typeparam name="TCommand">命令类型</typeparam>
public abstract class AbstractCommandHandler<TCommand> : CqrsContextAwareHandlerBase, IRequestHandler<TCommand, Unit>
where TCommand : ICommand<Unit>
{
/// <summary>
/// 处理指定的命令
/// 由具体的命令处理器子类实现命令处理逻辑
/// </summary>
/// <param name="command">要处理的命令对象</param>
/// <param name="cancellationToken">取消令牌,用于取消操作</param>
/// <returns>表示异步操作完成的ValueTask返回Unit类型表示无返回值</returns>
public abstract ValueTask<Unit> Handle(TCommand command, CancellationToken cancellationToken);
}
/// <summary>
/// 抽象命令处理器基类(带返回值版本)
/// 继承自轻量 CQRS 上下文基类并实现 IRequestHandler 接口,为具体的命令处理器提供基础功能。
/// 支持泛型命令和结果类型,框架会在每次分发前注入当前架构上下文。
/// </summary>
/// <typeparam name="TCommand">命令类型必须实现ICommand接口</typeparam>
/// <typeparam name="TResult">命令执行结果类型</typeparam>
public abstract class AbstractCommandHandler<TCommand, TResult> : CqrsContextAwareHandlerBase,
IRequestHandler<TCommand, TResult>
where TCommand : ICommand<TResult>
{
/// <summary>
/// 处理指定的命令并返回结果
/// 由具体的命令处理器子类实现命令处理逻辑
/// </summary>
/// <param name="command">要处理的命令对象</param>
/// <param name="cancellationToken">取消令牌,用于取消操作</param>
/// <returns>表示异步操作完成的ValueTask包含命令执行结果</returns>
public abstract ValueTask<TResult> Handle(TCommand command, CancellationToken cancellationToken);
}