private static SimplePredicate FilterCategory(ItemCategoryFilterDto filter)
{
if (filter.CategoryID == 0)
{
return(null);
}
return(new SimplePredicate(nameof(ItemCategory.CategoryID), ValueComparingOperator.Equal,
filter.CategoryID));
}
protected override IQuery <ItemCategory> ApplyWhereClause(IQuery <ItemCategory> query, ItemCategoryFilterDto filter)
{
var definedPredicates = new List <IPredicate>();
AddIfDefined(FilterUser(filter), definedPredicates);
AddIfDefined(FilterCategory(filter), definedPredicates);
if (definedPredicates.Count == 0)
{
return(query);
}
if (definedPredicates.Count == 1)
{
return(query.Where(definedPredicates.First()));
}
var wherePredicate = new CompositePredicate(definedPredicates);
return(query.Where(wherePredicate));
}
