/// <summary>
/// 更新数据到缓存（Add）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="entity"></param>
internal void AddCache <TEntity>(TEntity entity)
{
var tableName = TableAttribute.GetName(typeof(TEntity));
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(GetTableCacheKey(tableName), out List <TEntity> entities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
entities.Add(entity);
//如果过期时间为0，则取上下文的过期时间
CacheStorageManager.Put(GetTableCacheKey(tableName), entities, tableCacheTimeSpan == TimeSpan.Zero ? CacheOptions.TableCacheExpiredTimeSpan : tableCacheTimeSpan);
}
}
}
/// <summary>
/// 更新数据到缓存（Add）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="values"></param>
internal static void AddCache <TEntity>(DbContext dbContext, IEnumerable <TEntity> values)
{
if (dbContext.OpenTableCache)
{
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(dbContext, GetTableCacheKey(dbContext), out List <TEntity> entities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//如果过期时间为0，则取上下文的过期时间
TimeSpan timeSpan = tableCacheTimeSpan == TimeSpan.Zero ? dbContext.TableCacheExpiredTimeSpan : tableCacheTimeSpan;
entities.AddRange(values);
CacheStorageManager.Put(dbContext, GetTableCacheKey(dbContext), entities, tableCacheTimeSpan);
}
}
}
}
/// <summary>
/// 从缓存中获取数据，如果没有，则后台执行扫描表任务
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="filter"></param>
/// <returns></returns>
internal List <TEntity> GetEntitiesFromCache <TEntity>(Expression <Func <TEntity, bool> > filter) where TEntity : class
{
Ensure.ArgumentNotNullOrEmpty(filter, nameof(filter));
//1.如果TableCache里面有该缓存键，则直接获取
if (CacheStorageManager.IsExist(GetTableCacheKey(TableAttribute.GetName(typeof(TEntity))), out List <TEntity> entities))
{
DbContext.IsFromCache = true;
return(entities.Where(filter.Compile()).ToList());
}
//2.则判断是否需要对该表进行扫描（含有TableCachingAttribute的标记的类才可以有扫描全表的权限）
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//执行扫描全表数据任务
ScanTableBackground <TEntity>(tableCacheTimeSpan);
}
return(null);
}
/// <summary>
/// 更新数据到缓存（Delete）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="entity"></param>
internal void DeleteCache <TEntity>(TEntity entity)
{
var tableName = TableAttribute.GetName(typeof(TEntity));
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(GetTableCacheKey(tableName), out List <TEntity> entities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//如果过期时间为0，则取上下文的过期时间
TimeSpan timeSpan = tableCacheTimeSpan == TimeSpan.Zero ? CacheOptions.TableCacheExpiredTimeSpan : tableCacheTimeSpan;
//从缓存集合中寻找该记录，如果找到，则更新该记录
var val = entities.Find(t => t.Equals(entity));
if (val != null)
{
entities.Remove(val);
CacheStorageManager.Put(GetTableCacheKey(tableName), entities, tableCacheTimeSpan);
}
}
}
}
/// <summary>
/// 更新数据到缓存（Delete）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="filter"></param>
internal void DeleteCache <TEntity>(Expression <Func <TEntity, bool> > filter)
{
if (DbContext.OpenTableCache)
{
var tableName = TableAttribute.GetName(typeof(TEntity));
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(GetTableCacheKey(tableName), out List <TEntity> entities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//从缓存集合中寻找该记录，如果找到，则更新该记录
var list = entities.Where(filter.Compile()).ToList();
if (list != null && list.Any())
{
entities.RemoveAll(t => list.Contains(t));
//如果过期时间为0，则取上下文的过期时间
CacheStorageManager.Put(GetTableCacheKey(tableName), entities, tableCacheTimeSpan == TimeSpan.Zero ? DbContext.TableCacheExpiredTimeSpan : tableCacheTimeSpan);
}
}
}
}
}
/// <summary>
/// 更新数据到缓存（Delete）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="filter"></param>
internal static void DeleteCache <TEntity>(DbContext dbContext, Expression <Func <TEntity, bool> > filter)
{
if (dbContext.OpenTableCache)
{
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(dbContext, GetTableCacheKey(dbContext), out List <TEntity> entities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//如果过期时间为0，则取上下文的过期时间
TimeSpan timeSpan = tableCacheTimeSpan == TimeSpan.Zero ? dbContext.TableCacheExpiredTimeSpan : tableCacheTimeSpan;
//从缓存集合中寻找该记录，如果找到，则更新该记录
var val = entities.Where(filter.Compile()).FirstOrDefault();
if (val != null)
{
entities.Remove(val);
CacheStorageManager.Put(dbContext, GetTableCacheKey(dbContext), entities, tableCacheTimeSpan);
}
}
}
}
}
/// <summary>
/// 更新数据到缓存（Update）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="entity"></param>
/// <param name="filter"></param>
internal void UpdateCache <TEntity>(TEntity entity, Expression <Func <TEntity, bool> > filter, IEnumerable <string> updateCloumns = null)
{
if (DbContext.OpenTableCache)
{
var tableName = TableAttribute.GetName(typeof(TEntity));
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(GetTableCacheKey(tableName), out List <TEntity> oldEntities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//如果过期时间为0，则取上下文的过期时间
TimeSpan timeSpan = tableCacheTimeSpan == TimeSpan.Zero ? DbContext.TableCacheExpiredTimeSpan : tableCacheTimeSpan;
//从缓存集合中寻找该记录，如果找到，则更新该记录
var list = oldEntities.Where(filter.Compile()).ToList();
if (list != null && list.Any())
{
List <TEntity> newEntities;
oldEntities.RemoveAll(t => list.Contains(t));
if (null == updateCloumns)
{
//改变了多条，更新对应字段
newEntities = UpdateEntitiesField(oldEntities, entity, updateCloumns);
}
else
{
//只改变了传入的唯一一条
newEntities = oldEntities;
newEntities.Add(entity);
}
CacheStorageManager.Put(GetTableCacheKey(tableName), newEntities, timeSpan);
}
}
}
}
}
/// <summary>
/// 更新数据到缓存（Update）
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="entity"></param>
/// <param name="filter"></param>
internal void UpdateCache <TEntity>(TEntity entity, Expression <Func <TEntity, bool> > filter)
{
if (DbContext.OpenTableCache)
{
var tableName = TableAttribute.GetName(typeof(TEntity));
//如果存在表级别缓存，则更新数据到缓存
if (CacheStorageManager.IsExist(GetTableCacheKey(tableName), out List <TEntity> entities))
{
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//如果过期时间为0，则取上下文的过期时间
TimeSpan timeSpan = tableCacheTimeSpan == TimeSpan.Zero ? DbContext.TableCacheExpiredTimeSpan : tableCacheTimeSpan;
//从缓存集合中寻找该记录，如果找到，则更新该记录
var val = entities.Where(filter.Compile()).FirstOrDefault();
if (val != null)
{
val = entity;
CacheStorageManager.Put(GetTableCacheKey(tableName), entities, timeSpan);
}
}
}
}
}
/// <summary>
/// 从缓存中获取数据，如果没有，则后台执行扫描表任务
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="dbContext"></param>
/// <param name="filter"></param>
/// <returns></returns>
internal static List <TEntity> GetEntitiesFromCache <TEntity>(DbContext dbContext, Expression <Func <TEntity, bool> > filter) where TEntity : class
{
//1.检查是否开启了Table缓存
if (!dbContext.OpenTableCache)
{
return(null);
}
//2.如果TableCache里面有该缓存键，则直接获取
if (CacheStorageManager.IsExist(dbContext, GetTableCacheKey(dbContext), out List <TEntity> entities))
{
dbContext.IsFromCache = true;
return(entities.Where(filter.Compile()).ToList());
}
//3.则判断是否需要对该表进行扫描（含有TableCachingAttribute的标记的类才可以有扫描全表的权限）
if (TableCachingAttribute.IsExistTaleCaching(typeof(TEntity), out TimeSpan tableCacheTimeSpan))
{
//执行扫描全表数据任务
ScanTableBackground <TEntity>(dbContext, tableCacheTimeSpan);
}
return(null);
}
