810 lines
31 KiB
C#
810 lines
31 KiB
C#
using System;
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using System.Collections.Concurrent;
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using System.ComponentModel.DataAnnotations;
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using System.Reflection;
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using System.Reflection.Metadata.Ecma335;
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using System.Text;
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using System.Threading.Tasks;
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using Apache.IoTDB;
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using Apache.IoTDB.DataStructure;
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using JiShe.CollectBus.Common.Enums;
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using JiShe.CollectBus.Common.Extensions;
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using JiShe.CollectBus.Common.Helpers;
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using JiShe.CollectBus.Common.Models;
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using JiShe.CollectBus.IoTDB.Attribute;
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using JiShe.CollectBus.IoTDB.Context;
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using JiShe.CollectBus.IoTDB.Interface;
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using JiShe.CollectBus.IoTDB.Model;
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using JiShe.CollectBus.IoTDB.Options;
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using Microsoft.Extensions.Logging;
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using Volo.Abp.DependencyInjection;
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using Volo.Abp.Domain.Entities;
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namespace JiShe.CollectBus.IoTDB.Provider
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{
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/// <summary>
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/// IoTDB数据源
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/// </summary>
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public class IoTDbProvider : IIoTDbProvider, ITransientDependency
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{
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private static readonly ConcurrentDictionary<Type, DeviceMetadata> MetadataCache = new();
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private readonly ILogger<IoTDbProvider> _logger;
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private readonly IIoTDbSessionFactory _sessionFactory;
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private readonly IoTDBRuntimeContext _runtimeContext;
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private IIoTDbSessionPool CurrentSession =>
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_sessionFactory.GetSessionPool(_runtimeContext.UseTableSessionPool);
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/// <summary>
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/// IoTDbProvider
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/// </summary>
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/// <param name="logger"></param>
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/// <param name="sessionFactory"></param>
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/// <param name="runtimeContext"></param>
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public IoTDbProvider(
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ILogger<IoTDbProvider> logger,
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IIoTDbSessionFactory sessionFactory,
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IoTDBRuntimeContext runtimeContext)
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{
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_logger = logger;
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_sessionFactory = sessionFactory;
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_runtimeContext = runtimeContext;
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}
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/// <summary>
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/// 插入数据
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="entity"></param>
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/// <returns></returns>
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public async Task InsertAsync<T>(T entity) where T : IoTEntity
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{
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try
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{
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var metadata = await GetMetadata<T>();
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var tablet = BuildTablet(new[] { entity }, metadata);
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await CurrentSession.InsertAsync(tablet);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, $"{nameof(InsertAsync)} 插入数据时发生异常");
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throw;
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}
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}
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/// <summary>
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/// 批量插入数据
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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public async Task BatchInsertAsync<T>(IEnumerable<T> entities) where T : IoTEntity
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{
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try
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{
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var metadata = await GetMetadata<T>();
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var batchSize = 1000;
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var batches = entities.Chunk(batchSize);
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foreach (var batch in batches)
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{
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var tablet = BuildTablet(batch, metadata);
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await CurrentSession.InsertAsync(tablet);
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}
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, $"{nameof(BatchInsertAsync)} 批量插入数据时发生异常");
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throw;
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}
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}
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/// <summary>
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/// 批量插入数据
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="deviceMetadata">设备元数据</param>
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/// <param name="entities"></param>
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/// <returns></returns>
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public async Task BatchInsertAsync<T>(DeviceMetadata deviceMetadata, IEnumerable<T> entities) where T : IoTEntity
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{
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try
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{
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var batchSize = 1000;
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var batches = entities.Chunk(batchSize);
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foreach (var batch in batches)
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{
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var tablet = BuildTablet(batch, deviceMetadata);
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await CurrentSession.InsertAsync(tablet);
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}
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, $"{nameof(BatchInsertAsync)} 批量插入数据时发生异常");
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throw;
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}
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}
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/// <summary>
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/// 删除数据
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="options"></param>
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/// <returns></returns>
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public async Task<object> DeleteAsync<T>(IoTDBQueryOptions options) where T : IoTEntity
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{
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try
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{
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var query = await BuildDeleteSQL<T>(options);
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var sessionDataSet = await CurrentSession.ExecuteQueryStatementAsync(query);
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if (!sessionDataSet.HasNext())
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{
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_logger.LogWarning($"{typeof(T).Name} 删除数据时，没有返回受影响记录数量。");
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return 0;
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}
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//获取唯一结果行
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var row = sessionDataSet.Next();
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return row.Values[0];
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, $"{nameof(DeleteAsync)} 删除数据时发生异常");
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throw;
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}
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}
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/// <summary>
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/// 获取设备元数据
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns></returns>
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public async Task<DeviceMetadata> GetMetadata<T>() where T : IoTEntity
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{
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var columns = CollectColumnMetadata(typeof(T));
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var metadata = BuildDeviceMetadata<T>(columns);
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var metaData = MetadataCache.AddOrUpdate(
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typeof(T),
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addValueFactory: t => metadata, // 如果键不存在，用此值添加
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updateValueFactory: (t, existingValue) =>
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{
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var columns = CollectColumnMetadata(t);
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var metadata = BuildDeviceMetadata<T>(columns);
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//对现有值 existingValue 进行修改，返回新值
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existingValue.ColumnNames = metadata.ColumnNames;
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return existingValue;
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}
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);
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return await Task.FromResult(metaData);
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}
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/// <summary>
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/// 查询数据
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="options"></param>
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/// <returns></returns>
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public async Task<BusPagedResult<T>> QueryAsync<T>(IoTDBQueryOptions options) where T : IoTEntity, new()
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{
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try
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{
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var query = await BuildQuerySQL<T>(options);
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var sessionDataSet = await CurrentSession.ExecuteQueryStatementAsync(query);
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var result = new BusPagedResult<T>
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{
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TotalCount = await GetTotalCount<T>(options),
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Items = await ParseResults<T>(sessionDataSet, options.PageSize),
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PageIndex = options.PageIndex,
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PageSize = options.PageSize,
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};
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result.HasNext = result.TotalCount > 0 ? result.TotalCount < result.PageSize : false;
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return result;
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}
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catch (Exception ex)
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{
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CurrentSession.Dispose();
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_logger.LogError(ex, $"{nameof(QueryAsync)} IoTDB查询数据时发生异常");
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throw;
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}
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}
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/// <summary>
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/// 构建Tablet
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="entities">表实体</param>
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/// <param name="metadata">设备元数据</param></param>
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/// <returns></returns>
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private Tablet BuildTablet<T>(IEnumerable<T> entities, DeviceMetadata metadata) where T : IoTEntity
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{
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var timestamps = new List<long>();
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var values = new List<List<object>>();
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var devicePaths = new HashSet<string>();
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List<string> tempColumnNames = new List<string>();
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tempColumnNames.AddRange(metadata.ColumnNames);
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var entityTypeAttribute = typeof(T).GetCustomAttribute<EntityTypeAttribute>();
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if (entityTypeAttribute == null)
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{
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throw new ArgumentException($"{nameof(BuildTablet)} 构建存储结构{nameof(Tablet)}时 {nameof(T)}的EntityType 没有指定，属于异常情况，-101");
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}
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if (metadata.EntityType != entityTypeAttribute.EntityType)
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{
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throw new ArgumentException($"{nameof(BuildTablet)} 构建存储结构{nameof(Tablet)}时 {nameof(T)}的EntityType 和{nameof(DeviceMetadata)}的 EntityType 不一致，属于异常情况，-102");
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}
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if (metadata.EntityType == Enums.EntityTypeEnum.TreeModel && _runtimeContext.UseTableSessionPool == true)
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{
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throw new ArgumentException($"{nameof(BuildTablet)} 构建存储结构{nameof(Tablet)}时 tree模型不能使用table模型Session连接，属于异常情况，-103");
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}
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else if (metadata.EntityType == Enums.EntityTypeEnum.TableModel && _runtimeContext.UseTableSessionPool == false)
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{
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throw new ArgumentException($"{nameof(BuildTablet)} 构建存储结构{nameof(Tablet)}时 table模型不能使用tree模型Session连接，属于异常情况，-104");
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}
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string tableNameOrTreePath = string.Empty;
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var tableNameOrTreePathAttribute = typeof(T).GetCustomAttribute<TableNameOrTreePathAttribute>();
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if (tableNameOrTreePathAttribute != null)
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{
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tableNameOrTreePath = tableNameOrTreePathAttribute.TableNameOrTreePath;
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}
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foreach (var entity in entities)
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{
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timestamps.Add(entity.Timestamps);
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var rowValues = new List<object>();
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foreach (var measurement in tempColumnNames)
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{
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PropertyInfo propertyInfo = typeof(T).GetProperty(measurement);
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if (propertyInfo == null)
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{
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throw new Exception($"{nameof(BuildTablet)} 构建表模型{typeof(T).Name}时，没有找到{measurement}属性，属于异常情况，-101。");
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}
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var value = propertyInfo.GetValue(entity);
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if (propertyInfo.IsDefined(typeof(SingleMeasuringAttribute), false) && metadata.IsSingleMeasuring == true)//表示当前对象是单测点模式
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{
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if (value != null)
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{
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Type tupleType = value.GetType();
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Type[] tupleArgs = tupleType.GetGenericArguments();
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Type item2Type = tupleArgs[1]; // T 的实际类型
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var item1 = tupleType.GetProperty("Item1")!.GetValue(value);
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var item2 = tupleType.GetProperty("Item2")!.GetValue(value);
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if (item1 == null || item2 == null)
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{
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throw new Exception($"{nameof(BuildTablet)} 构建表模型{typeof(T).Name}时，单测点模式构建失败，没有获取测点名称或者测点值，-102。");
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}
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var indexOf = metadata.ColumnNames.IndexOf(measurement);
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metadata.ColumnNames[indexOf] = (string)item1!;
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rowValues.Add(item2);
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}
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else
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{
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rowValues.Add(null);
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}
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//同时如果是单测点模式，且是table模型存储，路径只能通过DevicePathBuilder.GetDeviceTableName(entity)获取
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if (_runtimeContext.UseTableSessionPool)
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{
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tableNameOrTreePath = DevicePathBuilder.GetDeviceTableName(entity);
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}
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}
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else
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{
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//需要根据value的类型，进行相应的值映射转换，例如datetime转换为long的时间戳值
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if (value != null)
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{
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Type tupleType = value.GetType();
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var tempValue = tupleType.Name.ToUpper() switch
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{
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"DATETIME" => Convert.ToDateTime(value).GetDateTimeOffset().ToUnixTimeNanoseconds(),
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_ => value
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};
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rowValues.Add(tempValue);
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}
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else
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{
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rowValues.Add(value);
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}
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}
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}
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values.Add(rowValues);
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//如果指定了路径
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if (!string.IsNullOrWhiteSpace(tableNameOrTreePath))
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{
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devicePaths.Add(tableNameOrTreePath);
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}
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else
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{
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if (!_runtimeContext.UseTableSessionPool)//树模型
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{
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devicePaths.Add(DevicePathBuilder.GetDevicePath(entity));
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}
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else
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{
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devicePaths.Add(DevicePathBuilder.GetTableName<T>());
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}
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}
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}
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if (devicePaths.Count > 1)
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{
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throw new Exception($"{nameof(BuildTablet)} 构建Tablet《{typeof(T).Name}》时，批量插入的设备路径不一致。");
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}
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return _runtimeContext.UseTableSessionPool
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? BuildTableSessionTablet(metadata, devicePaths.First(), values, timestamps)
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: BuildSessionTablet(metadata, devicePaths.First(), values, timestamps);
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}
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/// <summary>
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/// 构建tree模型的Tablet
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/// </summary>
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/// <param name="metadata">已解析的设备数据元数据</param>
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/// <param name="devicePath">设备路径</param>
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/// <param name="values">数据集合</param>
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/// <param name="timestamps">时间戳集合</param>
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/// <returns></returns>
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private Tablet BuildSessionTablet(DeviceMetadata metadata, string devicePath, List<List<object>> values, List<long> timestamps)
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{
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//todo 树模型需要去掉TAG类型和ATTRIBUTE类型的字段，只需要保留FIELD类型字段即可
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return new Tablet(
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devicePath,
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metadata.ColumnNames,
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metadata.DataTypes,
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values,
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timestamps
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);
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}
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/// <summary>
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/// 构建表模型的Tablet
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/// </summary>
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/// <param name="metadata">已解析的设备数据元数据</param>
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/// <param name="tableName">表名称</param>
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/// <param name="values">数据集合</param>
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/// <param name="timestamps">时间戳集合</param>
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/// <returns></returns>
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private Tablet BuildTableSessionTablet(DeviceMetadata metadata, string tableName, List<List<object>> values, List<long> timestamps)
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{
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var tablet = new Tablet(
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tableName,
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metadata.ColumnNames,
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metadata.ColumnCategories,
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metadata.DataTypes,
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values,
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timestamps
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);
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return tablet;
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}
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/// <summary>
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/// 构建查询语句
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="options"></param>
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/// <returns></returns>
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private async Task<string> BuildQuerySQL<T>(IoTDBQueryOptions options) where T : IoTEntity
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{
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var metadata = await GetMetadata<T>();
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var sb = new StringBuilder("SELECT TIME as Timestamps,");
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sb.AppendJoin(", ", metadata.ColumnNames);
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sb.Append($" FROM {options.TableNameOrTreePath}");
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if (options.Conditions.Any())
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{
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sb.Append(" WHERE ");
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sb.AppendJoin(" AND ", options.Conditions.Select(TranslateCondition));
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}
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sb.Append($" LIMIT {options.PageSize} OFFSET {options.PageIndex * options.PageSize}");
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return sb.ToString();
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}
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/// <summary>
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/// 构建删除语句
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="options"></param>
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/// <returns></returns>
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private async Task<string> BuildDeleteSQL<T>(IoTDBQueryOptions options) where T : IoTEntity
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{
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var metadata = await GetMetadata<T>();
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var sb = new StringBuilder();
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if (!_runtimeContext.UseTableSessionPool)
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{
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sb.Append("DELETE ");
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}
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else
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{
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sb.Append("DROP ");
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}
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sb.Append($" FROM {options.TableNameOrTreePath}");
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sb.AppendJoin(", ", metadata.ColumnNames);
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if (options.Conditions.Any())
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{
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sb.Append(" WHERE ");
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sb.AppendJoin(" AND ", options.Conditions.Select(TranslateCondition));
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}
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return sb.ToString();
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}
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/// <summary>
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/// 将查询条件转换为SQL语句
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/// </summary>
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/// <param name="condition"></param>
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/// <returns></returns>
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/// <exception cref="NotSupportedException"></exception>
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private string TranslateCondition(QueryCondition condition)
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{
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return condition.Operator switch
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{
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">" => condition.IsNumber ? $"{condition.Field} > {condition.Value}" : $"{condition.Field} > '{condition.Value}'",
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"<" => condition.IsNumber ? $"{condition.Field} < {condition.Value}" : $"{condition.Field} < '{condition.Value}'",
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"=" => condition.IsNumber ? $"{condition.Field} = {condition.Value}" : $"{condition.Field} = '{condition.Value}'",
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_ => throw new NotSupportedException($"{nameof(TranslateCondition)} 将查询条件转换为SQL语句时操作符 {condition.Operator} 属于异常情况")
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};
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}
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/// <summary>
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/// 获取查询条件的总数量
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="options"></param>
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/// <returns></returns>
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private async Task<int> GetTotalCount<T>(IoTDBQueryOptions options) where T : IoTEntity
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{
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var countQuery = $"SELECT COUNT(*) FROM {options.TableNameOrTreePath}";
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if (options.Conditions.Any())
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{
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countQuery += " WHERE " + string.Join(" AND ", options.Conditions.Select(TranslateCondition));
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}
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var result = await CurrentSession.ExecuteQueryStatementAsync(countQuery);
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if (result.HasNext())
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{
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await result.Close();
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return 0;
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}
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var count = Convert.ToInt32(result.Next().Values[0]);
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await result.Close();
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return count;
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}
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/// <summary>
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/// 解析查询结果
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="dataSet"></param>
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/// <param name="pageSize"></param>
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/// <returns></returns>
|
||
private async Task<IEnumerable<T>> ParseResults<T>(SessionDataSet dataSet, int pageSize) where T : IoTEntity, new()
|
||
{
|
||
var results = new List<T>();
|
||
var metadata = await GetMetadata<T>();
|
||
|
||
var properties = typeof(T).GetProperties();
|
||
|
||
var columns = new List<string>() { "Timestamps" };
|
||
var dataTypes = new List<TSDataType>() { TSDataType.TIMESTAMP };
|
||
columns.AddRange(metadata.ColumnNames);
|
||
dataTypes.AddRange(metadata.DataTypes);
|
||
//metadata.ColumnNames.Insert(0, "Timestamps");
|
||
//metadata.DataTypes.Insert(0, TSDataType.TIMESTAMP);
|
||
|
||
while (dataSet.HasNext() && results.Count < pageSize)
|
||
{
|
||
var record = dataSet.Next();
|
||
var entity = new T
|
||
{
|
||
Timestamps = record.Timestamps
|
||
};
|
||
|
||
foreach (var measurement in columns)
|
||
{
|
||
int indexOf = columns.IndexOf(measurement);
|
||
var value = record.Values[indexOf];
|
||
TSDataType tSDataType = dataTypes[indexOf];
|
||
|
||
var prop = properties.FirstOrDefault(p =>
|
||
p.Name.Equals(measurement, StringComparison.OrdinalIgnoreCase));
|
||
if (prop != null && !(value is System.DBNull))
|
||
{
|
||
dynamic tempValue = GetTSDataValue(tSDataType, value);
|
||
|
||
if (measurement.ToLower().EndsWith("time"))
|
||
{
|
||
typeof(T).GetProperty(measurement)?.SetValue(entity, TimestampHelper.ConvertToDateTime(tempValue, TimestampUnit.Nanoseconds));
|
||
}
|
||
else
|
||
{
|
||
typeof(T).GetProperty(measurement)?.SetValue(entity, tempValue);
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
results.Add(entity);
|
||
|
||
}
|
||
await dataSet.Close();
|
||
return results;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取设备元数据的列
|
||
/// </summary>
|
||
/// <param name="type"></param>
|
||
/// <returns></returns>
|
||
private List<ColumnInfo> CollectColumnMetadata(Type type)
|
||
{
|
||
var columns = new List<ColumnInfo>();
|
||
|
||
foreach (var prop in type.GetProperties())
|
||
{
|
||
|
||
string typeName = string.Empty;
|
||
|
||
Type declaredType = prop.PropertyType;
|
||
// 处理可空类型
|
||
if (declaredType.IsGenericType && declaredType.GetGenericTypeDefinition() == typeof(Nullable<>))
|
||
{
|
||
Type underlyingType = Nullable.GetUnderlyingType(declaredType);
|
||
typeName = underlyingType.Name;
|
||
}
|
||
else
|
||
{
|
||
typeName = declaredType.Name;
|
||
}
|
||
|
||
//先获取Tag标签和属性标签
|
||
ColumnInfo? column = prop.GetCustomAttribute<TAGColumnAttribute>() is not null ? new ColumnInfo(
|
||
name: prop.Name,
|
||
category: ColumnCategory.TAG,
|
||
dataType: GetDataTypeFromTypeName(typeName),
|
||
false
|
||
) : prop.GetCustomAttribute<ATTRIBUTEColumnAttribute>() is not null ? new ColumnInfo(
|
||
prop.Name,
|
||
ColumnCategory.ATTRIBUTE,
|
||
GetDataTypeFromTypeName(typeName),
|
||
false
|
||
) : prop.GetCustomAttribute<FIELDColumnAttribute>() is not null ? new ColumnInfo(
|
||
prop.Name,
|
||
ColumnCategory.FIELD,
|
||
GetDataTypeFromTypeName(typeName),
|
||
false)
|
||
: null;
|
||
|
||
//最先检查是不是单侧点模式
|
||
SingleMeasuringAttribute singleMeasuringAttribute = prop.GetCustomAttribute<SingleMeasuringAttribute>();
|
||
|
||
if (singleMeasuringAttribute != null && column == null)
|
||
{
|
||
//warning: 单侧点模式注意事项
|
||
//Entity实体 字段类型是 Tuple<string,T>,Item1=>测点名称，Item2=>测点值,泛型
|
||
//只有一个Filed字段。
|
||
//MeasuringName 默认为 SingleMeasuringAttribute.FieldName，以便于在获取对应的Value的时候重置为 Item1 的值。
|
||
|
||
Type tupleType = prop.PropertyType;
|
||
Type[] tupleArgs = tupleType.GetGenericArguments();
|
||
|
||
column = new ColumnInfo(
|
||
singleMeasuringAttribute.FieldName,
|
||
ColumnCategory.FIELD,
|
||
GetDataTypeFromTypeName(tupleArgs[1].Name),
|
||
true
|
||
);
|
||
}
|
||
|
||
if (column.HasValue)
|
||
{
|
||
columns.Add(column.Value);
|
||
}
|
||
}
|
||
return columns;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 构建设备元数据
|
||
/// </summary>
|
||
/// <param name="typeInfo">待解析的类</param>
|
||
/// <param name="columns">已处理好的数据列</param>
|
||
/// <returns></returns>
|
||
private DeviceMetadata BuildDeviceMetadata<T>(List<ColumnInfo> columns) where T : IoTEntity
|
||
{
|
||
var metadata = new DeviceMetadata();
|
||
|
||
//先检查是不是单侧点模型
|
||
if (columns.Any(c => c.IsSingleMeasuring))
|
||
{
|
||
metadata.IsSingleMeasuring = true;
|
||
}
|
||
|
||
//按业务逻辑顺序处理（TAG -> ATTRIBUTE -> FIELD）
|
||
var groupedColumns = columns
|
||
.GroupBy(c => c.Category)
|
||
.ToDictionary(g => g.Key, g => g.ToList());
|
||
|
||
ProcessCategory(groupedColumns, ColumnCategory.TAG, metadata);
|
||
ProcessCategory(groupedColumns, ColumnCategory.ATTRIBUTE, metadata);
|
||
ProcessCategory(groupedColumns, ColumnCategory.FIELD, metadata);
|
||
|
||
var entityTypeAttribute = typeof(T).GetCustomAttribute<EntityTypeAttribute>();
|
||
|
||
if (entityTypeAttribute == null)
|
||
{
|
||
throw new ArgumentException($"{nameof(BuildDeviceMetadata)} 构建设备元数据时 {nameof(IoTEntity)} 的EntityType 没有指定，属于异常情况，-101");
|
||
}
|
||
|
||
metadata.EntityType = entityTypeAttribute.EntityType;
|
||
|
||
return metadata;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 处理不同列类型的逻辑
|
||
/// </summary>
|
||
/// <param name="groupedColumns"></param>
|
||
/// <param name="category"></param>
|
||
/// <param name="metadata"></param>
|
||
private void ProcessCategory(IReadOnlyDictionary<ColumnCategory, List<ColumnInfo>> groupedColumns, ColumnCategory category, DeviceMetadata metadata)
|
||
{
|
||
if (groupedColumns.TryGetValue(category, out var cols))
|
||
{
|
||
metadata.ColumnNames.AddRange(cols.Select(c => c.Name));
|
||
metadata.ColumnCategories.AddRange(cols.Select(c => c.Category));
|
||
metadata.DataTypes.AddRange(cols.Select(c => c.DataType));
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 数据列结构
|
||
/// </summary>
|
||
private readonly struct ColumnInfo
|
||
{
|
||
/// <summary>
|
||
/// 列名
|
||
/// </summary>
|
||
public string Name { get; }
|
||
|
||
/// <summary>
|
||
/// 是否是单测点
|
||
/// </summary>
|
||
public bool IsSingleMeasuring { get; }
|
||
|
||
/// <summary>
|
||
/// 列类型
|
||
/// </summary>
|
||
public ColumnCategory Category { get; }
|
||
|
||
/// <summary>
|
||
/// 数据类型
|
||
/// </summary>
|
||
public TSDataType DataType { get; }
|
||
|
||
public ColumnInfo(string name, ColumnCategory category, TSDataType dataType, bool isSingleMeasuring)
|
||
{
|
||
Name = name;
|
||
Category = category;
|
||
DataType = dataType;
|
||
IsSingleMeasuring = isSingleMeasuring;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 根据类型名称获取对应的 IoTDB 数据类型
|
||
/// </summary>
|
||
/// <param name="typeName">类型名称（不区分大小写）</param>
|
||
/// <returns>对应的 TSDataType，默认返回 TSDataType.STRING</returns>
|
||
private TSDataType GetDataTypeFromTypeName(string typeName)
|
||
{
|
||
if (string.IsNullOrWhiteSpace(typeName))
|
||
return TSDataType.STRING;
|
||
|
||
return DataTypeMap.TryGetValue(typeName.Trim(), out var dataType)
|
||
? dataType
|
||
: TSDataType.STRING;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 根据类型名称获取 IoTDB 数据类型
|
||
/// </summary>
|
||
private readonly IReadOnlyDictionary<string, TSDataType> DataTypeMap =
|
||
new Dictionary<string, TSDataType>(StringComparer.OrdinalIgnoreCase)
|
||
{
|
||
["BOOLEAN"] = TSDataType.BOOLEAN,
|
||
["INT32"] = TSDataType.INT32,
|
||
["INT64"] = TSDataType.INT64,
|
||
["FLOAT"] = TSDataType.FLOAT,
|
||
["DOUBLE"] = TSDataType.DOUBLE,
|
||
["TEXT"] = TSDataType.TEXT,
|
||
["NULLTYPE"] = TSDataType.NONE,
|
||
["DATETIME"] = TSDataType.TIMESTAMP,
|
||
["DATE"] = TSDataType.DATE,
|
||
["BLOB"] = TSDataType.BLOB,
|
||
["DECIMAL"] = TSDataType.STRING,
|
||
["STRING"] = TSDataType.STRING
|
||
};
|
||
|
||
/// <summary>
|
||
/// 根据类型名称获取 IoTDB 数据默认值
|
||
/// </summary>
|
||
private readonly IReadOnlyDictionary<string, object> DataTypeDefaultValueMap =
|
||
new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase)
|
||
{
|
||
["BOOLEAN"] = false,
|
||
["INT32"] = 0,
|
||
["INT64"] = 0,
|
||
["FLOAT"] = 0.0f,
|
||
["DOUBLE"] = 0.0d,
|
||
["TEXT"] = string.Empty,
|
||
["NULLTYPE"] = null,
|
||
["DATETIME"] = null,
|
||
["DATE"] = null,
|
||
["BLOB"] = null,
|
||
["DECIMAL"] = "0.0",
|
||
["STRING"] = string.Empty
|
||
};
|
||
|
||
/// <summary>
|
||
/// IoTDB 数据类型与.net类型映射
|
||
/// </summary>
|
||
/// <param name="tSDataType"></param>
|
||
/// <param name="value"></param>
|
||
/// <returns></returns>
|
||
private dynamic GetTSDataValue(TSDataType tSDataType, object value) =>
|
||
tSDataType switch
|
||
{
|
||
TSDataType.BOOLEAN => Convert.ToBoolean(value),
|
||
TSDataType.INT32 => Convert.ToInt32(value),
|
||
TSDataType.INT64 => Convert.ToInt64(value),
|
||
TSDataType.FLOAT => Convert.ToDouble(value),
|
||
TSDataType.DOUBLE => Convert.ToDouble(value),
|
||
TSDataType.TEXT => Convert.ToString(value),
|
||
TSDataType.NONE => null,
|
||
TSDataType.TIMESTAMP => Convert.ToInt64(value),
|
||
TSDataType.DATE => Convert.ToDateTime(value),
|
||
TSDataType.BLOB => Convert.ToByte(value),
|
||
TSDataType.STRING => Convert.ToString(value),
|
||
_ => Convert.ToString(value)
|
||
};
|
||
}
|
||
}
|