/// <summary>
/// Called before a remove database command execute
/// </summary>
/// <typeparam name="T">Data type</typeparam>
/// <param name="removeByQueryContext">Remove by query context</param>
/// <returns>Return policy result</returns>
public virtual StartingResult OnRemoveByQueryStarting <T>(RemoveByQueryContext <T> removeByQueryContext) where T : BaseEntity <T>, new()
{
if (removeByQueryContext == null)
{
return(StartingResult.Success($"Parameter:{nameof(removeByQueryContext)} is null"));
}
try
{
RemoveCacheData(removeByQueryContext.Datas);
}
catch (Exception ex)
{
return(DataCacheBehavior.GetStartingResult(DataCacheOperation.RemoveData, ex));
}
return(StartingResult.Success());
}
/// <summary>
/// Called before a update database command execute
/// </summary>
/// <typeparam name="T">Data type</typeparam>
/// <param name="updateAllContext">Update all context</param>
/// <returns>Return policy result</returns>
public virtual StartingResult OnUpdateAllStarting <T>(UpdateAllContext <T> updateAllContext) where T : BaseEntity <T>, new()
{
if (updateAllContext == null)
{
return(StartingResult.Success($"Parameter:{nameof(updateAllContext)} is null"));
}
var entityType = typeof(T);
try
{
RemoveCacheDataByType(entityType);
}
catch (Exception ex)
{
return(DataCacheBehavior.GetStartingResult(DataCacheOperation.RemoveData, ex));
}
return(StartingResult.Success());
}
/// <summary>
/// Called before a database command execute
/// </summary>
/// <param name="addDataContext">Add data context</param>
/// <returns>Return the policy result</returns>
public virtual StartingResult OnAddStarting <T>(AddDataContext <T> addDataContext) where T : BaseEntity <T>, new()
{
if (addDataContext == null)
{
return(StartingResult.Success($"Parameter:{nameof(addDataContext)} is null"));
}
try
{
AddCacheData(new QueryDataCallbackContext <T>()
{
Datas = addDataContext.Datas,
Query = addDataContext.DatabaseCommand?.Query
});
}
catch (Exception ex)
{
return(DataCacheBehavior.GetStartingResult(DataCacheOperation.AddData, ex));
}
return(StartingResult.Success());
}
/// <summary>
/// Called before a update database command execute
/// </summary>
/// <typeparam name="T">Data type</typeparam>
/// <param name="updateByQueryContext">Update by query context</param>
/// <returns>Return policy result</returns>
public virtual StartingResult OnUpdateByQueryStarting <T>(UpdateByQueryContext <T> updateByQueryContext) where T : BaseEntity <T>, new()
{
if (updateByQueryContext == null)
{
return(StartingResult.Success($"Parameter:{nameof(updateByQueryContext)} is null"));
}
if (updateByQueryContext.GetDatasProxy == null)
{
return(StartingResult.Success($"Parameter:{nameof(UpdateByQueryContext<T>.GetDatasProxy)} is null"));
}
var datas = updateByQueryContext.GetDatasProxy(updateByQueryContext.Query);
try
{
RemoveCacheData(datas);
}
catch (Exception ex)
{
return(DataCacheBehavior.GetStartingResult(DataCacheOperation.RemoveData, ex));
}
return(StartingResult.Success());
}
/// <summary>
/// Command starting event handler
/// </summary>
/// <typeparam name="T">Data type</typeparam>
/// <param name="parameter">Command starting event parameter</param>
/// <returns>Return command starting event execute result</returns>
CommandStartingEventExecuteResult CommandStartingEventHandler <T>(CommandStartingEventParameter parameter) where T : BaseEntity <T>, new()
{
if (parameter == null || parameter.Command == null)
{
return(CommandStartingEventExecuteResult.DefaultSuccess);
}
StartingResult startingResult = null;
switch (parameter.CommandBehavior)
{
case CommandBehavior.Add:
startingResult = dataCachePolicy.OnAddStarting(new AddDataContext <T>()
{
Datas = new List <T>(1)
{
parameter.Data as T
}, DatabaseCommand = parameter.Command
});
break;
case CommandBehavior.RemoveByQuery:
Tuple <IEnumerable <T>, IQuery> removeOption = parameter.Data as Tuple <IEnumerable <T>, IQuery>;
startingResult = dataCachePolicy.OnRemoveByQueryStarting(new RemoveByQueryContext <T>()
{
DatabaseCommand = parameter.Command,
Datas = removeOption?.Item1,
Query = removeOption?.Item2
});
break;
case CommandBehavior.UpdateByQuery:
Tuple <Func <IQuery, List <T> >, IQuery> updateOption = parameter.Data as Tuple <Func <IQuery, List <T> >, IQuery>;
startingResult = dataCachePolicy.OnUpdateByQueryStarting(new UpdateByQueryContext <T>()
{
DatabaseCommand = parameter.Command,
GetDatasProxy = updateOption?.Item1,
Query = updateOption?.Item2
});
break;
case CommandBehavior.RemoveObjectType:
Tuple <Func <IQuery, List <T> >, IQuery> removeAllOption = parameter.Data as Tuple <Func <IQuery, List <T> >, IQuery>;
startingResult = dataCachePolicy.OnRemoveAllStarting(new RemoveAllContext <T>()
{
DatabaseCommand = parameter.Command,
Query = removeAllOption?.Item2,
GetDatasProxy = removeAllOption?.Item1
});
break;
case CommandBehavior.UpdateObjectType:
Tuple <Func <IQuery, List <T> >, IQuery> updateAllOption = parameter.Data as Tuple <Func <IQuery, List <T> >, IQuery>;
startingResult = dataCachePolicy.OnUpdateAllStarting(new UpdateAllContext <T>()
{
DatabaseCommand = parameter.Command,
Query = updateAllOption?.Item2,
GetDatasProxy = updateAllOption?.Item1
});
break;
case CommandBehavior.RemoveData:
startingResult = dataCachePolicy.OnRemoveStarting(new RemoveDataContext <T>()
{
DatabaseCommand = parameter.Command,
Datas = new List <T>(1)
{
parameter.Data as T
}
});
break;
case CommandBehavior.Update:
startingResult = dataCachePolicy.OnUpdateStarting(new UpdateDataContext <T>()
{
DatabaseCommand = parameter.Command,
Datas = new List <T>(1)
{
parameter.Data as T
}
});
break;
default:
break;
}
CommandStartingEventExecuteResult result = new CommandStartingEventExecuteResult
{
BreakCommand = startingResult?.BreakDatabaseCommand ?? false,
Message = startingResult?.Message ?? string.Empty
};
return(result);
}
