public virtual async Task <PromotionSearchResult> SearchPromotionsAsync(PromotionSearchCriteria criteria)
{
var cacheKey = CacheKey.With(GetType(), nameof(SearchPromotionsAsync), criteria.GetCacheKey());
return(await _platformMemoryCache.GetOrCreateExclusiveAsync(cacheKey, async (cacheEntry) =>
{
cacheEntry.AddExpirationToken(PromotionSearchCacheRegion.CreateChangeToken());
var result = AbstractTypeFactory <PromotionSearchResult> .TryCreateInstance();
using (var repository = _repositoryFactory())
{
var sortInfos = BuildSortExpression(criteria);
var query = BuildQuery(repository, criteria);
//https://github.com/zzzprojects/EntityFramework-Plus/issues/293
//Workaround ArgumentException with CountAsync have no predicate when query has a Cast or OfType expression
result.TotalCount = await query.CountAsync(x => true);
if (criteria.Take > 0)
{
var ids = await query.OrderBySortInfos(sortInfos).ThenBy(x => x.Id)
.Select(x => x.Id)
.Skip(criteria.Skip).Take(criteria.Take)
.ToArrayAsync();
result.Results = (await _promotionService.GetPromotionsByIdsAsync(ids))
.OrderBy(x => Array.IndexOf(ids, x.Id)).ToList();
}
}
return result;
}));
}
private void ClearCache(string[] promotionIds = null)
{
CouponCacheRegion.ExpireRegion();
PromotionSearchCacheRegion.ExpireRegion();
if (promotionIds != null)
{
PromotionCacheRegion.ExpirePromotions(promotionIds);
}
}
public virtual async Task <PromotionResult> EvaluatePromotionAsync(IEvaluationContext context)
{
var promoContext = GetPromotionEvaluationContext(context);
var cacheKey = CacheKey.With(GetType(), nameof(EvaluatePromotionAsync), string.Join("-", promoContext.GetCacheKey()));
var result = await _platformMemoryCache.GetOrCreateExclusiveAsync(cacheKey, async (cacheEntry) =>
{
cacheEntry.SlidingExpiration = TimeSpan.FromMinutes(1);
cacheEntry.AddExpirationToken(PromotionSearchCacheRegion.CreateChangeToken());
return(await EvaluatePromotionWithoutCache(promoContext));
});
return(result);
}
protected virtual void ClearCache(string[] promotionIds)
{
PromotionSearchCacheRegion.ExpireRegion();
PromotionCacheRegion.ExpirePromotions(promotionIds);
}
private static void ClearCache(string[] promotionIds)
{
PromotionSearchCacheRegion.ExpireRegion();
PromotionCacheRegion.ExpirePromotions(promotionIds);
}
