/// <summary>
/// Gets the subset of <typeparamref name="TEntity"/> entities corresponding to the predicate <paramref name="predicate"/>.
/// </summary>
/// <param name="predicate">Filter which entities are returned.</param>
/// <param name="eager">Indicates whether or not to eagerly load navigation properties.</param>
/// <returns></returns>
public async Task <IEnumerable <TEntity> > GetByConditionAsync(Expression <Func <TEntity, bool> > predicate, bool eager = false)
{
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
var query = _context.Set <TEntity>().AsQueryable();
query = query.Where(predicate);
if (eager)
{
var navigations = _context.Model.FindEntityType(typeof(TEntity))
.GetDerivedTypesInclusive()
.SelectMany(type => type.GetNavigations())
.Distinct();
foreach (var property in navigations)
{
query = query.Include(property.Name);
}
}
var results = await query.ToListAsync();
return(results ?? new List <TEntity>());
}
protected Repository(PatientContext context)
{
Context = context;
DbSet = Context.Set <TEntity>();
}
public async Task <int> AddAsync(Patient entity)
{
await DbContext.Set <Patient>().AddAsync(entity);
return(await DbContext.SaveChangesAsync());
}
