public T ObtainById(int id)
{
using (var db = new DatabaseDbEntities())
{
return(db.Set <T>().FirstOrDefault(x => x.Id == id));
}
}
public int Count(Expression <Func <T, bool> > where)
{
using (var db = new DatabaseDbEntities())
{
return(db.Set <T>().Where(where).Count());
}
}
public IEnumerable <T> FindBy(QueryParameters <T> queryParameters)
{
var orderByClass = ObtenerOrderBy(queryParameters);
Expression <Func <T, bool> > whereTrue = x => true;
var where = (queryParameters.Where == null) ? whereTrue : queryParameters.Where;
using (DatabaseDbEntities db = new DatabaseDbEntities())
{
if (orderByClass.IsAscending)
{
return(db.Set <T>().Where(where).OrderBy(orderByClass.OrderBy)
.Skip((queryParameters.Page - 1) * queryParameters.Top)
.Take(queryParameters.Top).ToList());
}
else
{
return(db.Set <T>().Where(where).OrderByDescending(orderByClass.OrderBy)
.Skip((queryParameters.Page - 1) * queryParameters.Top)
.Take(queryParameters.Top).ToList());
}
}
}