serein-flow/NodeFlow/Model/CompositeConditionNode.cs

using Serein.Library;
using Serein.Library.Api;


namespace Serein.NodeFlow.Model
{
    /// <summary>
    /// 组合条件节点（用于条件区域）
    /// </summary>
    public class CompositeConditionNode : NodeModelBase
    {
        public CompositeConditionNode(IFlowEnvironment environment):base(environment) 
        {
            
        }
        public List<SingleConditionNode> ConditionNodes { get; } = [];


        public void AddNode(SingleConditionNode node)
        {
            ConditionNodes.Add(node);
            MethodDetails ??= node.MethodDetails;
        }

        /// <summary>
        /// 条件节点重写执行方法
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        public override async Task<object?> ExecutingAsync(IDynamicContext context)
        {
            // 条件区域中遍历每个条件节点
            foreach (SingleConditionNode? node in ConditionNodes)
            {
                var state = await JudgeAsync(context, node);
                NextOrientation = state; // 每次判读完成后，设置区域后继方向为判断结果
                if (state != ConnectionType.IsSucceed)
                {
                    // 如果条件不通过，立刻推出循环
                    break;
                }
            }
            return Task.FromResult( PreviousNode?.GetFlowData()); // 条件区域透传上一节点的数据
        }

        
        private async Task<ConnectionType> JudgeAsync(IDynamicContext context, SingleConditionNode node)
        {
            try
            {
                await node.ExecutingAsync(context);
                return node.NextOrientation;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                NextOrientation = ConnectionType.IsError;
                RuningException = ex;
                return ConnectionType.IsError;
            }
        }

        public override Parameterdata[] GetParameterdatas()
        {
            return [];
        }

        public override NodeInfo ToInfo()
        {
            //if (MethodDetails == null) return null;

            //var trueNodes = SucceedBranch.Select(item => item.Guid); // 真分支
            //var falseNodes = FailBranch.Select(item => item.Guid);// 假分支
            //var upstreamNodes = UpstreamBranch.Select(item => item.Guid);// 上游分支
            //var errorNodes = ErrorBranch.Select(item => item.Guid);// 异常分支
            var trueNodes = SuccessorNodes[ConnectionType.IsSucceed].Select(item => item.Guid); // 真分支
            var falseNodes = SuccessorNodes[ConnectionType.IsFail].Select(item => item.Guid);// 假分支
            var errorNodes = SuccessorNodes[ConnectionType.IsError].Select(item => item.Guid);// 异常分支
            var upstreamNodes = SuccessorNodes[ConnectionType.Upstream].Select(item => item.Guid);// 上游分支

            // 生成参数列表
            Parameterdata[] parameterData = GetParameterdatas();

            return new NodeInfo
            {
                Guid = Guid,
                MethodName = MethodDetails?.MethodName,
                Label = DisplayName ?? "",
                Type = this.GetType().ToString(),
                TrueNodes = trueNodes.ToArray(),
                FalseNodes = falseNodes.ToArray(),
                UpstreamNodes = upstreamNodes.ToArray(),
                ParameterData = parameterData.ToArray(),
                ErrorNodes = errorNodes.ToArray(),
                ChildNodeGuids = ConditionNodes.Select(node => node.Guid).ToArray(),
            };
        }

    }

}