public virtual void AddSortParam(SortParam param)
{
throw new NotSupportedException();
}
public static IQueryable <T> ApplyFilters <T>(this IQueryable <T> elementCollection, FilterParam[] filters, SortParam sortParam)
{
var result = elementCollection;
if (filters != null)
{
foreach (var filterParam in filters)
{
var prop = typeof(T).GetProperty(filterParam.Property);
FilterParam param = filterParam;
if (prop != null)
{
switch (filterParam.Expression)
{
//TODO: implement correct way of Contains/StartWith/EndWith
case DaoExpression.Contains:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.Contains,
param.Value);
break;
case DaoExpression.EndsWith:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.EndsWith,
param.Value);
break;
case DaoExpression.StartsWith:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.StartsWith,
param.Value);
break;
case DaoExpression.Eq:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.Equal,
param.Value);
break;
case DaoExpression.Gt:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.GreaterThan,
param.Value);
break;
case DaoExpression.GtEq:
result = ApplyFilter(result, param.Property,
ExtendedLinqExpressionType.GreaterThanOrEqual, param.Value);
break;
case DaoExpression.Lt:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.LessThan,
param.Value);
break;
case DaoExpression.LtEq:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.LessThanOrEqual,
param.Value);
break;
case DaoExpression.NotEq:
result = ApplyFilter(result, param.Property, ExtendedLinqExpressionType.NotEqual,
param.Value);
break;
}
}
}
}
if (sortParam != null)
{
result = sortParam.Ascending
? result.OrderBy(sortParam.Property)
: result.OrderByDescending(sortParam.Property);
}
else
{
result = result.OrderBy("Id");
}
return(result);
}