public void OnRequest <T>(PagedEntityListRequest <T> request, MessageReceivedInfo info) where T : EntityBase
{
PagedEntityListRequestTask <T> task = new PagedEntityListRequestTask <T>(_busManager, request);
_executionManager.AddTask(task);
_logger.Log(LogLevel.Info, "Added paged list request to executor queue: Id " + request.Id.ToString());
}
public Guid GetPagedEntities <T>(Action <PagedEntityListResponse <T> > onResponse, int page, int itemsPerPage, Expression <Func <T, bool> > filter, params Expression <Func <T, object> >[] navigationProperties) where T : EntityBase
{
//Create request
PagedEntityListRequest <T> request = new PagedEntityListRequest <T>(Guid.NewGuid());
request.Page = page;
request.ItemsPerPage = itemsPerPage;
request.NavigationProperties = new NavigationPropertiesHandle <T>(navigationProperties);
request.Filter = new FilterHandle <T>(filter);
request.User = _user;
//Add to pending requests
_pendingRequests.Add(request.Id, request);
//Setup and subscribe to result queue
IQueue resultQueue = _busManager.CreateQueue(_busManager.TopicExchange, request.PrivateResponseQueue);
_busManager.Subscribe <PagedEntityListResponse <T> >(_busManager.TopicExchange, request.PrivateResponseQueue, (response, info) => OnGetPagedEntitesResponse(response, info, onResponse));
_ownedTemporaryQueues.Add(request.PrivateResponseQueue);
//Send request
_busManager.Publish(_busManager.TopicExchange, TopicQueues.ProductEntitiesList, request);
//Return request guid
return(request.Id);
}
public void GetPagedEntities(PagedEntityListRequest <T> request)
{
var responseQueue = request.PrivateResponseQueue;
var filter = request.Filter.GetFilter();
var navigationProperties = request.NavigationProperties.GetNavigationProperties();
var page = request.Page;
var itemsPerPage = request.ItemsPerPage;
var user = request.User;
var requestId = request.Id;
PagedEntityListResponse <T> response = null;
CollectionPage <T> collectionPage = null;
var result = false;
//Use generic data accessor
using (var dataAccessor = new DataAccessor <T>(user))
{
try
{
collectionPage = dataAccessor.GetPagedEntities(page, itemsPerPage, filter, navigationProperties);
result = true;
}
catch (Exception ex)
{
//Cast as our own exception to get base message
var exception = new BaseDbException(ex);
_logger.Log(LogLevel.Error, ex);
result = false;
response = new PagedEntityListResponse <T> {
Errors = new string[] { exception.Message }.ToList(), Id = requestId, NavigationProperties = request.NavigationProperties, Status = ResponseStatus.Failure
};
}
}
if (result)
{
_logger.Log(LogLevel.Info, string.Format("GetPagedEntities request Id {0} completed successfully.", requestId));
response = new PagedEntityListResponse <T> {
CollectionPage = collectionPage, Id = requestId, NavigationProperties = request.NavigationProperties, Status = ResponseStatus.Success
};
}
PagedEntitiesGot(response);
}