/// <summary>
/// 解析类型参数映射集合（默认以定义参数类型名称为键名）。
/// </summary>
/// <param name="accessorTypeImplementation">给定的访问器类型实现。</param>
/// <returns>返回 <see cref="TypeParameterMappingCollection"/>。</returns>
public static TypeParameterMappingCollection ParseCollection(Type accessorTypeImplementation)
{
var accessorTypeDefinition = typeof(IContentAccessor <, , , , , , , , ,>);
// 因访问器默认服务类型为 IAccessor，所以不强制实现访问器泛型类型定义
if (!accessorTypeImplementation.IsImplementedInterfaceType(accessorTypeDefinition, out var resultType))
{
return(null);
}
return(TypeParameterMappingHelper.ParseCollection(accessorTypeDefinition, resultType));
}
/// <summary>
/// 解析类型参数映射集合（默认以定义参数类型名称为键名）。
/// </summary>
/// <param name="accessorTypeImplementation">给定的访问器类型实现。</param>
/// <param name="accessorMapping">输出访问器 <see cref="TypeParameterMapping"/>。</param>
/// <returns>返回 <see cref="TypeParameterMappingCollection"/>。</returns>
public static TypeParameterMappingCollection ParseCollection(Type accessorTypeImplementation,
out TypeParameterMapping accessorMapping)
{
var accessorTypeDefinition = typeof(IDataAccessor <, , , ,>);
// 因访问器默认服务类型为 IAccessor，所以不强制实现访问器泛型类型定义
if (!accessorTypeImplementation.IsImplementedInterfaceType(accessorTypeDefinition, out var resultType))
{
accessorMapping = null;
return(null);
}
accessorMapping = new TypeParameterMapping(accessorTypeDefinition, accessorTypeImplementation);
var mappings = TypeParameterMappingHelper.ParseCollection(accessorTypeDefinition, resultType);
mappings.TryFindTypeDefinitionFromValuesAndAddMapping(typeof(IGenerativeIdentifier <>));
mappings.TryFindTypeDefinitionFromValuesAndAddMapping(typeof(IIncrementalIdentifier <>));
mappings.TryFindTypeDefinitionFromValuesAndAddMapping(typeof(ICreation <,>));
return(mappings);
}
public void ParseAsDictionaryTest()
{
var baseType = typeof(INotificationHandler <>);
var implType = typeof(INotificationHandler <PingNotification>);
var parameters = TypeParameterMappingHelper.ParseCollection(baseType, implType);
Assert.Single(parameters);
Assert.Equal("TNotification", parameters.Keys.First());
Assert.Equal(nameof(PingNotification), parameters.Values.First().ArgumentName);
baseType = typeof(IRequestHandler <,>);
implType = typeof(IRequestHandler <PingRequest, Pong>);
parameters = TypeParameterMappingHelper.ParseCollection(baseType, implType);
Assert.Equal(2, parameters.Count);
Assert.Equal("TRequest", parameters.Keys.First());
Assert.Equal("TResponse", parameters.Keys.Last());
Assert.Equal(nameof(PingRequest), parameters.Values.First().ArgumentName);
Assert.Equal(nameof(Pong), parameters.Values.Last().ArgumentName);
}