package com.smtaiserver.smtaiserver.javaai.jsonflow.core;

import java.util.ArrayList;
import java.util.List;

import com.smtaiserver.smtaiserver.javaai.SMTJavaAIError;
import com.smtservlet.util.Json;

public abstract class SMTJsonFlowNodeOnlyOutput extends SMTJsonFlowNode 
{
	protected List<SMTJsonFlowNode>		_listDownFlowNodes = new ArrayList<>();
	
	@Override
	public void initEdge(SMTJsonFlowNode tagNode, Json jsonEdge)
	{
		super.initEdge(tagNode, jsonEdge);
		_listDownFlowNodes.add(tagNode);
	}
	
	@Override
	public void afterInstance() throws Exception
	{
		if(_listDownFlowNodes.size() == 0)
			throw new Exception("can't find down node from workflow : " + this.getId());
	}
	

	@Override
	public SMTJavaAIError executeFlowNode(SMTJsonFlowExecArg execArg) throws Exception
	{
		// 将所有子节点添加作为下一轮节点
		for(SMTJsonFlowNode flowNode : _listDownFlowNodes)
		{
			execArg._stackNodeExec.addLast(flowNode.createFlowNodeExec());
		}
		return null;
	}
}