public PaginatedResult <TSelect> LimitedSearch <TGroup, TSelect>(
IDataFilter <TDataModel> filter,
IDataLimiter <TDataModel> limiter,
IDataProjection <TDataModel, TGroup, TSelect> projection)
{
Checker.NotNullArgument(filter, nameof(filter));
Checker.NotNullArgument(limiter, nameof(limiter));
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Group,
$"{nameof(projection)}.{nameof(projection.Group)}");
Checker.NotNullObject(projection.Select,
$"{nameof(projection)}.{nameof(projection.Select)}");
var query = QuerySearch(_query, filter, projection);
// A projeção já foi aplicada em QuerySearch(),
// por isso não precisa ser repassada aqui
var(offset, limit, total, result) = QueryPreLimitResult(query, limiter, null);
return(new PaginatedResult <TSelect>(
result.GroupBy(projection.Group).Select(projection.Select).ToList(),
offset,
limit,
total
));
}
public IEnumerable <TSelect> GetAll <TSelect>(IDataProjection <TDataModel, TSelect> projection)
{
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Select, () => projection.Select);
return(TryApplyIncludes(Query, projection).Select(projection.Select).ToList());
}
public TSelect GetFirst <TSelect>(IDataFilter <TDataModel> filter,
IDataProjection <TDataModel, TSelect> projection)
{
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Select, () => projection.Select);
return(QuerySearch(_query, filter, projection).Select(projection.Select).FirstOrDefault());
}
public IEnumerable <TSelect> Search <TSelect>(IDataFilter <TDataModel> filter,
IDataProjection <TDataModel, TSelect> projection)
{
Checker.NotNullArgument(filter, nameof(filter));
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Select,
$"{nameof(projection)}.{nameof(projection.Select)}");
return(QuerySearch(Query, filter, projection)
.Select(projection.Select).ToList());
}
public IEnumerable <TSelect> GetAll <TGroup, TSelect>(
IDataProjection <TDataModel, TGroup, TSelect> projection)
{
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Group,
$"{nameof(projection)}.{nameof(projection.Group)}");
Checker.NotNullObject(projection.Select,
$"{nameof(projection)}.{nameof(projection.Select)}");
return(TryApplyIncludes(_query, projection)
.GroupBy(projection.Group)
.Select(projection.Select)
.ToList());
}
public TSelect Find <TSelect>(object[] identifiers,
IDataProjection <TDataModel, TSelect> projection)
{
Checker.NotNullArgument(identifiers, nameof(identifiers));
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Select,
$"{nameof(projection)}.{nameof(projection.Select)}");
var entityType = Context.Model.FindEntityType(typeof(TDataModel));
return(QueryFind(entityType, Query, identifiers, projection)
.Select(projection.Select)
.FirstOrDefault());
}
public PaginatedResult <TSelect> LimitedGet <TSelect>(IDataLimiter <TDataModel> limiter,
IDataProjection <TDataModel, TSelect> projection)
{
Checker.NotNullArgument(limiter, nameof(limiter));
Checker.NotNullArgument(projection, nameof(projection));
Checker.NotNullObject(projection.Select,
$"{nameof(projection)}.{nameof(projection.Select)}");
var(offset, limit, total, result) = QueryPreLimitResult(_query, limiter, projection);
return(new PaginatedResult <TSelect>(
result.Select(projection.Select).ToList(),
offset,
limit,
total
));
}
public TSelect Find <TSelect>(TDataModel data,
IDataProjection <TDataModel, TSelect> projection)
{
throw new DataLayerException(
$"{this.GetType().Name} not implement {nameof(Find)}(data)!");
}
public TSelect Find <TSelect>(object[] identifiers,
IDataProjection <TDataModel, TSelect> projection)
{
throw new DataLayerException(
$"{this.GetType().Name} not implement {nameof(Find)}(identifiers)!");
}
/// <summary>
/// Find an item stored by identifier
/// </summary>
/// <param name="storage">Storage object</param>
/// <param name="identifier">Item identifier</param>
/// <param name="projection">Data projection</param>
/// <returns>Instance of <typeparamref name="TSelect"/>, or null when not found</returns>
public static TSelect Find <TDataModel, TSelect>(this IFindableStorageWithSelector <TDataModel> storage, object identifier, IDataProjection <TDataModel, TSelect> projection)
where TDataModel : IIdentifiable
{
Checker.NotNullArgument(storage, nameof(storage));
Checker.NotNullArgument(identifier, nameof(identifier));
Checker.NotNullArgument(projection, nameof(projection));
return(storage.Find(new object[] { identifier }, projection));
}
/// <summary>
/// Find an item stored by a data instance
/// </summary>
/// <param name="storage">Storage object</param>
/// <param name="data">Data item</param>
/// <param name="projection">Data projection</param>
/// <returns>Instance of <typeparamref name="TSelect"/>, or null when not found</returns>
public static TSelect Find <TDataModel, TSelect>(this IFindableStorageWithSelector <TDataModel> storage, TDataModel data, IDataProjection <TDataModel, TSelect> projection)
where TDataModel : IIdentifiable
{
Checker.NotNullArgument(storage, nameof(storage));
Checker.NotNullArgument(data, nameof(data));
Checker.NotNullArgument(projection, nameof(projection));
return(storage.Find(data.Identifiers, projection));
}
