| Пример компонента для фиксации правила/условия. | | InMemory condition | public interface IInMemoryCondition<TData, TParameters>
{
/// <summary>
/// Проверить условие.
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
bool Check(TData source, TParameters parameters);
/// <summary>
/// Фильтрация для InMemory.
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
IEnumerable<TData> ApplayEnumerable(IEnumerable<TData> source, TParameters parameters);
} | public class DelegateInMemoryCondition<TData, TParameters>
: IInMemoryCondition<TData, TParameters>
{
private readonly Func<TData, TParameters, bool> _checkFunc;
private readonly Func<IEnumerable<TData>, TParameters, IEnumerable<TData>> _applayEnumerableFunc;
public DelegateInMemoryCondition(
Func<TData, TParameters, bool> checkFunc,
Func<IEnumerable<TData>, TParameters, IEnumerable<TData>>? applayEnumerableFunc = null)
{
_checkFunc = checkFunc;
_applayEnumerableFunc = applayEnumerableFunc
?? ((source, parameter) => source.Where(e => Check(e, parameter)));
}
public bool Check(TData source, TParameters parameters)
{
return _checkFunc(source, parameters);
}
public IEnumerable<TData> ApplayEnumerable(IEnumerable<TData> source, TParameters parameters)
{
return _applayEnumerableFunc(source, parameters);
}
} | | IQueryable condition | public interface IQueryableCondition<TData, TParameters>
{
/// <summary>
/// Фильтрация для БД.
/// Может использовать специфичные для БД функции.
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
IQueryable<TData> ApplayQueryable(IQueryable<TData> source, TParameters parameters);
} | public class DelegateIQueryableCondition<TData, TParameters>
: IQueryableCondition<TData, TParameters>
{
private readonly Func<IQueryable<TData>, TParameters, IQueryable<TData>> _applayQueryableFunc;
public DelegateIQueryableCondition(Func<IQueryable<TData>, TParameters, IQueryable<TData>> applayQueryableFunc)
{
_applayQueryableFunc = applayQueryableFunc;
}
public IQueryable<TData> ApplayQueryable(IQueryable<TData> source, TParameters parameters)
{
return _applayQueryableFunc(source, parameters);
}
} | | Контейнер для агрегата. | // *) Можно использовать в виде композиции, статичного класса, или создания/внедрения отельных компонентов.
public interface TEntityConditions
{
public (
IInMemoryCondition<TEntity, long> Memory,
IQueryableCondition<TEntity, long> Query
) ById { get; }
public (
IInMemoryCondition<TEntity, string> Memory,
IQueryableCondition<TEntity, string> Query
) ByName { get; }
public (
IInMemoryCondition<TEntity, object?> Memory,
IQueryableCondition<TEntity, object?> Query
) IsRule1 { get; }
} | |
|
| Вспомогательный Extension | public static class IConditionExtension
{
public static IQueryable<TEntity> ApplayFilterCondition<TEntity, TParameter>(
this IQueryable<TEntity> source,
IQueryableCondition<TEntity, TParameter> condition,
TParameter parameter)
{
return condition.ApplayQueryable(
source,
parameter);
}
public static IEnumerable<TEntity> ApplayFilterCondition<TEntity, TParameter>(
this IEnumerable<TEntity> source,
IInMemoryCondition<TEntity, TParameter> condition,
TParameter parameter)
{
return condition.ApplayEnumerable(
source,
parameter);
}
} | | | | |
|
