lj_plc/Actions/ChemicalWeighing/Mesnac.Action.ChemicalWeighing/Cache/CacheHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.IO;
using System.Reflection;
using System.Xml.Serialization;
using ICSharpCode.Core;
using Mesnac.Basic;
using Mesnac.Codd.Session;

namespace Mesnac.Action.ChemicalWeighing.Cache
{
    /// <summary>
    /// 数据缓存辅助类
    /// </summary>
    public class CacheHelper
    {
        #region 字段定义

        private static List<Entity.AlarmInfo> _alarmInfoList;           //用于按数据块、起始字、长度进行读取
        private static List<Entity.SimpleAlarmInfo> _alarmBlockWordList;   //数据块、地址字列表
        private static List<Entity.PmtAlarmInfo> _pmtAlarmInfoList;     //基础数据

        #endregion
        
        #region 报警参数

        #region 缓存报警参数信息

        /// <summary>
        /// 缓存报警参数信息
        /// </summary>
        /// <param name="alarmInfoList">报警参数列表</param>
        public static void CacheAlarmInfo()
        {
            _alarmInfoList = Alarm.AlarmHelper.GetBlockStartLengthList();
            _pmtAlarmInfoList = Alarm.AlarmHelper.GetPmtAlarmInfoList();

            _alarmBlockWordList = new List<Entity.SimpleAlarmInfo>();
            foreach (Entity.PmtAlarmInfo entity in _pmtAlarmInfoList)
            {
                bool flag = false;
                foreach (Entity.SimpleAlarmInfo info in _alarmBlockWordList)
                {
                    if (entity.AlarmPLC == info.AlramPLC && entity.AlarmBlock == info.AlarmBlock && entity.AlarmAddress == info.AlarmAddress)
                    {
                        flag = true;
                        break;
                    }
                }
                if (!flag)
                {
                    Entity.SimpleAlarmInfo newEntity = new Entity.SimpleAlarmInfo();
                    newEntity.AlramPLC = entity.AlarmPLC;
                    newEntity.AlarmBlock = entity.AlarmBlock;
                    newEntity.AlarmAddress = entity.AlarmAddress;
                    newEntity.AlarmBit = entity.AlarmBit.ToString();
                    _alarmBlockWordList.Add(newEntity);
                }
            }
        }

        #endregion

        #region 清空缓存的报警参数信息

        /// <summary>
        /// 清空缓存的报警参数信息
        /// </summary>
        public static void ClearAlarmInfo()
        {
            _alarmInfoList = null;
            _pmtAlarmInfoList = null;
            _alarmBlockWordList = null;
        }

        #endregion

        #region 从缓存获取所有报警参数扩展实体列表

        /// <summary>
        /// 从缓存获取所有报警参数扩展实体列表
        /// </summary>
        /// <returns></returns>
        public static List<Entity.AlarmInfo> AlarmInfoList
        {
            get
            {
                if (_alarmInfoList == null)
                {
                    CacheAlarmInfo();
                }
                return _alarmInfoList;
            }
        }

        #endregion

        #region 从缓存获取数据块和报警地址字列表

        /// <summary>
        /// 从缓存获取数据块和报警地址字列表
        /// </summary>
        /// <returns></returns>
        public static List<Entity.SimpleAlarmInfo> BlockWordList
        {
            get
            {
                if (_pmtAlarmInfoList == null)
                {
                    CacheAlarmInfo();
                }
                return _alarmBlockWordList;
            }
        }

        #endregion

        #region 从缓存获取报警参数实体信息

        /// <summary>
        /// 从缓存获取报警参数实体信息
        /// </summary>
        /// <param name="alarmPLC">报警参数PLC</param>
        /// <param name="alarmBlock">报警参数数据块</param>
        /// <param name="alarmAddress">报警参数地址字</param>
        /// <param name="alarmBit">报警参数数据位</param>
        /// <returns>返回对应的报警参数实体对象</returns>
        public static Entity.PmtAlarmInfo GetPmtAlarmInfoFromCache(string alarmPLC, string alarmBlock, int alarmAddress, int alarmBit)
        {
            if (_pmtAlarmInfoList == null)
            {
                CacheAlarmInfo();
            }
            foreach(Entity.PmtAlarmInfo entity in _pmtAlarmInfoList)
            {
                if (entity.AlarmPLC == alarmPLC && entity.AlarmBlock == alarmBlock && entity.AlarmAddress == alarmAddress && entity.AlarmBit == alarmBit)
                {
                    return entity;
                }
            }
            return null;
        }

        #endregion

        #endregion
    }
}