public async Task QueryShipsByName(CoreDddSampleNhibernateConfigurator nhibernateConfigurator)
{
using (var unitOfWork = new NhibernateUnitOfWork(nhibernateConfigurator))
{
unitOfWork.BeginTransaction();
var shipRepository = new NhibernateRepository <Ship>(unitOfWork);
try
{
var ship = new Ship("lady starlight", tonnage: 10m);
await shipRepository.SaveAsync(ship);
unitOfWork.Flush();
var getShipByNameQuery = new GetShipsByNameQuery {
ShipName = "lady"
};
var getShipByNameQueryHandler = new GetShipsByNameQueryHandler(unitOfWork);
var shipDtos = await getShipByNameQueryHandler.ExecuteAsync <ShipDto>(getShipByNameQuery);
Console.WriteLine($"Ship by name query was executed. Number of ships queried: {shipDtos.Count()}");
await unitOfWork.CommitAsync();
}
catch
{
await unitOfWork.RollbackAsync();
throw;
}
}
}
public async Task <IEnumerable <ShipDto> > GetShipsByNameAsync(string shipName)
{
var getShipByNameQuery = new GetShipsByNameQuery {
ShipName = shipName
};
return(await _queryExecutor.ExecuteAsync <GetShipsByNameQuery, ShipDto>(getShipByNameQuery));
}
public async Task QueryShipsByName()
{
var ioCContainer = new WindsorContainer();
_RegisterComponents(ioCContainer);
var unitOfWork = ioCContainer.Resolve <NhibernateUnitOfWork>();
var shipRepository = new NhibernateRepository <Ship>(unitOfWork);
try
{
unitOfWork.BeginTransaction();
try
{
var ship = new Ship("lady starlight", tonnage: 10m);
await shipRepository.SaveAsync(ship);
unitOfWork.Flush();
var queryExecutor = ioCContainer.Resolve <IQueryExecutor>();
var getShipByNameQuery = new GetShipsByNameQuery {
ShipName = "lady"
};
var shipDtos = await queryExecutor.ExecuteAsync <GetShipsByNameQuery, ShipDto>(getShipByNameQuery);
Console.WriteLine($"Ship by name query was executed by query executor resolved from IoC container. Number of ships queried: {shipDtos.Count()}");
await unitOfWork.CommitAsync();
}
catch
{
await unitOfWork.RollbackAsync();
throw;
}
}
finally
{
ioCContainer.Release(unitOfWork);
}
ioCContainer.Dispose();
}
public async Task <IEnumerable <ShipDto> > GetShipsByMultipleNames(
string shipNameOne,
string shipNameTwo
)
{
var getShipByNameOneQuery = new GetShipsByNameQuery {
ShipName = shipNameOne
};
var shipsByNameOne = _queryExecutor.Execute <GetShipsByNameQuery, ShipDto>(getShipByNameOneQuery);
// At this point, getShipByNameOneQuery have not been sent to the DB.
// The query would be sent to the DB only when the result (shipsByNameOne) is enumerated.
var getShipByNameTwoQuery = new GetShipsByNameQuery {
ShipName = shipNameTwo
};
var shipsByNameTwo = await _queryExecutor.ExecuteAsync <GetShipsByNameQuery, ShipDto>(getShipByNameTwoQuery);
// getShipByNameTwoQuery async execution was awaited, which sent both queries to the DB in the single round trip.
return(shipsByNameOne.Union(shipsByNameTwo));
}
