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d7293aa475
- 重构 Core 兼容命令查询入口，使 legacy SendCommand/SendQuery 通过内部 bridge request 复用统一 CQRS runtime - 新增 legacy bridge handler 与真实启动路径回归测试，验证默认架构初始化会自动接入统一 pipeline - 更新 Core 与 CQRS 文档及 cqrs-rewrite 跟踪，记录 Mediator 尚未吸收的能力差距与后续收口方向
80 lines
2.8 KiB
C#
80 lines
2.8 KiB
C#
// Copyright (c) 2025-2026 GeWuYou
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// SPDX-License-Identifier: Apache-2.0
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using GFramework.Core.Abstractions.Query;
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using GFramework.Core.Abstractions.Rule;
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using GFramework.Core.Cqrs;
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using GFramework.Cqrs.Abstractions.Cqrs;
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namespace GFramework.Core.Query;
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/// <summary>
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/// QueryExecutor 类负责执行查询操作，实现 IQueryExecutor 接口。
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/// 该类是密封的，防止被继承。
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/// </summary>
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public sealed class QueryExecutor(ICqrsRuntime? runtime = null) : IQueryExecutor
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{
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private readonly ICqrsRuntime? _runtime = runtime;
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/// <summary>
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/// 获取当前执行器是否已接入统一 CQRS runtime。
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/// </summary>
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public bool UsesCqrsRuntime => _runtime is not null;
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/// <summary>
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/// 执行指定的查询并返回结果。
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/// 当查询对象携带可用的架构上下文且执行器已接入统一 runtime 时，
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/// 该方法会先把 legacy 查询包装成内部 request 并交给 <see cref="ICqrsRuntime" />，
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/// 以复用统一的 dispatch / pipeline 入口；否则回退到 legacy 直接执行。
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/// </summary>
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/// <typeparam name="TResult">查询结果的类型。</typeparam>
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/// <param name="query">要执行的查询对象，必须实现 IQuery<TResult> 接口。</param>
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/// <returns>查询执行的结果，类型为 TResult。</returns>
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public TResult Send<TResult>(IQuery<TResult> query)
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{
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ArgumentNullException.ThrowIfNull(query);
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if (TryResolveDispatchContext(query, out var context) && _runtime is not null)
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{
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var boxedResult = _runtime.SendAsync(
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context,
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new LegacyQueryDispatchRequest(
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query,
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() => query.Do()))
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.AsTask()
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.GetAwaiter()
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.GetResult();
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return (TResult)boxedResult!;
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}
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return query.Do();
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}
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/// <summary>
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/// 解析当前 legacy 查询应该绑定到哪个架构上下文。
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/// </summary>
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/// <param name="query">即将执行的 legacy 查询对象。</param>
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/// <param name="context">命中时返回可用于 CQRS runtime 的架构上下文。</param>
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/// <returns>如果既接入了 runtime 且查询对象提供了上下文，则返回 <see langword="true" />。</returns>
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private bool TryResolveDispatchContext(object query, out GFramework.Core.Abstractions.Architectures.IArchitectureContext context)
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{
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context = null!;
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if (_runtime is null || query is not IContextAware contextAware)
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{
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return false;
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}
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try
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{
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context = contextAware.GetContext();
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return true;
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}
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catch (InvalidOperationException)
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{
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return false;
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}
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}
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}
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