public async Task <bool> EditTopicAsync(Topic topic)
{
var result = true;
topic.EnsureNotNull(() => new AngleExceptions());
var isExists = !topic.Id.IsNullOrEmpty() && !TopicsDb.GetById(topic.Id).IsNull();
if (isExists)
{
// upadate
result = await TopicsDb.AsUpdateable(topic).ExecuteCommandAsync() > 0;
}
else
{
topic.Id = Guid.NewGuid().ToString();
topic.CreateTime = DateTime.UtcNow;
if (TopicsDb.Count(t => t.Name == topic.Name) > 0)
{
result = false;
}
// add
result = await TopicsDb.AsInsertable(topic).ExecuteCommandAsync() > 0;
}
return(result);
}
public IEnumerable <Topic> Search(Expression <Func <Topic, bool> > whereExpressions, int?pageIndex, int?pageSize, out int pageCount)
{
pageCount = 0;
var query = whereExpressions.IsNull() ? TopicsDb.AsQueryable() : TopicsDb.AsQueryable().Where(whereExpressions);
if (pageSize.HasValue && pageIndex.HasValue)
{
return(query.ToPageList(pageIndex.Value, pageSize.Value, ref pageCount));
}
else
{
return(query.ToList());
}
}
public Task <Topic> GetTopicAsync(string topicId)
{
var topic = TopicsDb.GetById(topicId);
return(Task.FromResult(topic));
}
public Task <Topic> GetTopicAsync(string topic, string serviceId)
{
var topicObj = TopicsDb.GetSingle(t => topic == t.Name && t.ServiceId == serviceId);
return(Task.FromResult(topicObj));
}
