public IQueryable Aloha([FromBody] QueryInfo input)
{
QueryInfo info = new QueryInfo();
var result = _context.KorisceniUredjaji.AsQueryable();
var ruleInputs = input.Filter.Rules;
Expression <Func <KoriscenjeUredjaja, bool> > whereLaqmbdaExpression = null;
BinaryExpression binWhereExp = null;
//var filterCondition = input.Filter.Condition;
ParameterExpression parExp = Expression.Parameter(typeof(KoriscenjeUredjaja), "x");
Expression findExp = null;
foreach (var ruleInput in ruleInputs)
{
if (input.Filter.Condition == "and")
{
findExp = Expression.Constant(true);
binWhereExp =
info.GetWhereExp <KoriscenjeUredjaja>(parExp, ruleInput.Operator, ruleInput.Property, ruleInput.Value);
findExp = Expression.AndAlso(findExp, binWhereExp);
}
else if (input.Filter.Condition == "or")
{
findExp = Expression.Constant(false);
binWhereExp =
info.GetWhereExp <KoriscenjeUredjaja>(parExp, ruleInput.Operator, ruleInput.Property, ruleInput.Value);
findExp = Expression.OrElse(findExp, binWhereExp);
}
}
whereLaqmbdaExpression = info.GetWhereLambda <KoriscenjeUredjaja>(findExp, parExp);
Expression <Func <KoriscenjeUredjaja, object> > order = null;
result = result.Where(whereLaqmbdaExpression);
var sorters = input.Sorters;
bool condition = false;
foreach (var sorter in sorters)
{
order = info.OrderThings <KoriscenjeUredjaja>(sorter.Property, sorter.SortDirection);
if (sorter.SortDirection.ToLower().Equals("asc"))
{
if (!condition)
{
result = result.OrderBy(order);
condition = true;
}
else
{
result = ((IOrderedQueryable <KoriscenjeUredjaja>)result).ThenBy(order);
}
}
if (sorter.SortDirection.ToLower().Equals("desc"))
{
if (!condition)
{
result = result.OrderByDescending(order);
condition = true;
}
else
{
result = ((IOrderedQueryable <KoriscenjeUredjaja>)result).ThenByDescending(order);
}
}
}
result = result.Skip(input.Skip).Take(input.Take);
return(result);
}
