protected override async Task <TResult> InterceptAsync <TResult>(IInvocation invocation,
IInvocationProceedInfo proceedInfo, Func <IInvocation, IInvocationProceedInfo, Task <TResult> > proceed)
{
MethodInfo methodInfo = invocation.MethodInvocationTarget;
TransactionAttribute transactionAttribute = TransactionUtils.FindTransactionAttribute(methodInfo);
bool bindingRequired = transactionAttribute != null;
if (bindingRequired)
{
using (SessionWrapper sessionWrapper = sessionService.GetCurrentSession(transactionAttribute.ReadOnly))
{
using (TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction(
transactionAttribute.ReadOnly, transactionAttribute.IsolationLevel))
{
TResult retObject = await proceed(invocation, proceedInfo).ConfigureAwait(false);
await transactionWrapper.Commit().ConfigureAwait(false);
return(retObject);
}
}
}
{
TResult retObject = await proceed(invocation, proceedInfo).ConfigureAwait(false);
return(retObject);
}
}
public async Task <QuestionInfo> RandomSelect(QuestionCategory questionCategory, int minDifficult)
{
if (minDifficult < QuestionConstants.QuestionMinDifficult ||
minDifficult > QuestionConstants.QuestionMaxDifficult)
{
throw new ArgumentOutOfRangeException(nameof(minDifficult));
}
int questionCount = await questionInfoStatisticService.GetQuestionCount(questionCategory, minDifficult);
if (questionCount <= 0)
{
throw new ApplicationException($"Can't find any question with {questionCategory} and {minDifficult}.");
}
int skipNum = random.Next(0, questionCount);
int maxDifficult = minDifficult + QuestionConstants.QuestionSelectDifficultRange;
using SessionWrapper sessionWrapper = questionInfoRepository.GetSessionWrapper(true);
using TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction(true);
IQueryable <QuestionInfo> questionInfoQuery = questionInfoRepository.GetQueryable(sessionWrapper);
questionInfoQuery = questionInfoQuery.Where(m => m.QuestionCategory == questionCategory);
questionInfoQuery =
questionInfoQuery.Where(m => m.Difficult >= minDifficult && m.Difficult < maxDifficult);
return(await questionInfoQuery.Skip(skipNum).Take(1).FirstOrDefaultAsync());
}
public virtual async Task Delete(long id)
{
using (SessionWrapper sessionWrapper = entityRepository.GetSessionWrapper())
{
using (TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction())
{
await entityRepository.Delete(id);
await transactionWrapper.Commit();
}
}
}
public virtual async Task <TEntity> Update(TEntity entity)
{
using (SessionWrapper sessionWrapper = entityRepository.GetSessionWrapper())
{
using (TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction())
{
TEntity updatedEntity = await entityRepository.Update(entity);
await transactionWrapper.Commit();
return(updatedEntity);
}
}
}
public virtual async Task <TEntity> Get(long id, bool updateLater = false)
{
using (SessionWrapper sessionWrapper = entityRepository.GetSessionWrapper(true))
{
using (TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction(true))
{
TEntity entity = await entityRepository.Get(id, updateLater);
await transactionWrapper.Commit();
return(entity);
}
}
}
public virtual async Task <IList <TEntity> > LoadAll()
{
using (SessionWrapper sessionWrapper = entityRepository.GetSessionWrapper(true))
{
using (TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction(true))
{
IQueryable <TEntity> entityQuery = entityRepository.GetQueryable(sessionWrapper);
List <TEntity> entities = await entityQuery.ToListAsync();
await transactionWrapper.Commit();
return(entities);
}
}
}
public async Task <int> GetQuestionCount(QuestionCategory questionCategory, int minDifficult)
{
if (minDifficult < QuestionConstants.QuestionMinDifficult ||
minDifficult > QuestionConstants.QuestionMaxDifficult)
{
throw new ArgumentOutOfRangeException(nameof(minDifficult));
}
string cacheName = GetCacheName(questionCategory, minDifficult);
try
{
var cachedData = await cacheService.Get <CachedData>(cacheName);
if (cachedData != null)
{
return(cachedData.Count);
}
}
catch (Exception e)
{
logger.LogError(e, $"Error on get cache by key {cacheName}");
}
using SessionWrapper sessionWrapper = questionInfoStatisticRepository.GetSessionWrapper(true);
using TransactionWrapper transactionWrapper = sessionWrapper.BuildTransaction(true);
IQueryable <QuestionInfoStatistic> questionInfoStatisticQuery =
questionInfoStatisticRepository.GetQueryable(sessionWrapper);
questionInfoStatisticQuery = questionInfoStatisticQuery.Where(m => m.QuestionCategory == questionCategory);
questionInfoStatisticQuery =
questionInfoStatisticQuery.Where(m => m.Difficult == minDifficult);
int questionCount = await questionInfoStatisticQuery.Select(m => m.QuestionCount).SumAsync();
try
{
await cacheService.Set(cacheName, new CachedData { Count = questionCount });
}
catch (Exception e)
{
logger.LogError(e, $"Error on set cache by key {cacheName}");
}
return(questionCount);
}