public static IQueryable <TEntity> GetQuery(IQueryable <TEntity> inputQuery,
ISpecificaation <TEntity> spec)
{
var query = inputQuery;
if (spec.Criteria != null)
{
query = query.Where(spec.Criteria);
}
query = spec.Includes.Aggregate(query, (current, include) => current.Include(include));
return(query);
}
private IQueryable <T> ApplySpecification(ISpecificaation <T> spec)
{
return(SpecificationEvaluator <T> .GetQuery(_context.Set <T>().AsQueryable(), spec));
}
public async Task <IReadOnlyList <T> > ListAsync(ISpecificaation <T> spec)
{
return(await ApplySpecification(spec).ToListAsync());
}
public async Task <T> GetEntityWithSpecification(ISpecificaation <T> spec)
{
return(await ApplySpecification(spec).FirstOrDefaultAsync());
}