/// <summary>
/// Deletes a collection of T's from the database and sets the baskets AscentPayload to the number of records affected
/// </summary>
/// <param name="basket">A basket</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public async Task AddResultAsync(IDeleteCollectionBasket <T, int> basket, IVisit visit)
{
if (basket == null)
{
throw new ArgumentNullException(nameof(basket));
}
var statement = GetDeleteDbStatement(basket.DescentPayload);
visit.Log(statement.ToString());
basket.AscentPayload = await DbInterface.ExecuteNonQueryAsync(statement).ConfigureAwait(false);
}
/// <summary>
/// Inserts the requested T into the database and sets the baskets AscentPayload to new records identity
/// </summary>
/// <param name="basket">A basket</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public async Task AddResultAsync(IPostBasket <T, TId> basket, IVisit visit)
{
if (basket == null)
{
throw new ArgumentNullException(nameof(basket));
}
var statement = GetInsertDbStatement(basket.DescentPayload);
visit.Log(statement.ToString());
var id = await DbInterface.ExecuteScalarAsync(statement).ConfigureAwait(false);
basket.AscentPayload = Descriptor.ProjectColumnValue <TId>(id);
}
/// <summary>
/// Retreives the requested T from the database and adds it to the baskets AscendPayload
/// </summary>
/// <param name="basket">A basket</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public async Task AddResultAsync(IGetBasket <TId, T> basket, IVisit visit)
{
if (basket == null)
{
throw new ArgumentNullException(nameof(basket));
}
var statement = GetSelectDbStatement(basket.DescentPayload);
visit.Log(statement.ToString());
using (var rdr = await DbInterface.GetReaderAsync(statement).ConfigureAwait(false))
{
if (!await rdr.ReadAsync().ConfigureAwait(false))
{
throw new InvalidOperationException($"No '{typeof(T)}' record found");
}
basket.AscentPayload = Mapper.MapObject(rdr);
}
}
/// <summary>
/// Retrieves the requested collection of T's from the database and adds them to the baskets AscendPayload
/// </summary>
/// <param name="basket">A basket</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public async Task AddResultAsync(IGetCollectionBasket <T> basket, IVisit visit)
{
if (basket == null)
{
throw new ArgumentNullException(nameof(basket));
}
var statement = GetSelectDbStatement(basket.DescentPayload);
visit.Log(statement.ToString());
using (var rdr = await DbInterface.GetReaderAsync(statement).ConfigureAwait(false))
{
var objs = new List <T>();
while (await rdr.ReadAsync().ConfigureAwait(false))
{
var obj = Mapper.MapObject(rdr);
objs.Add(obj);
}
basket.AscentPayload = objs.ToArray();
}
}
