private object ParseFilterValue(string propertyTypeName, ListFilterValue filterValue, Type propertyType)
{
if (propertyTypeName == "DateTime")
{
return(DateTime.Parse(filterValue.Term));
}
else if (propertyTypeName == "DateTimeOffset")
{
return(DateTimeOffset.Parse(filterValue.Term));
}
else if (propertyTypeName == "Int32")
{
return(Convert.ToInt32(filterValue.Term));
}
else if (propertyTypeName == "Decimal")
{
return(Convert.ToDecimal(filterValue.Term));
}
else if (propertyTypeName == "Double")
{
return(Convert.ToDouble(filterValue.Term));
}
else if (propertyTypeName == "Boolean")
{
return(Convert.ToBoolean(filterValue.Term));
}
else if (propertyType.IsEnum)
{
return((int)Enum.Parse(propertyType, filterValue?.Term).To(propertyType));
}
// strings not converted
return(filterValue.Term);
}
// used in ModelBinder
public static ListFilter Parse(string name, string expression)
{
var result = new ListFilter {
Name = name
};
var value = new ListFilterValue();
var escape = false;
var negate = false;
foreach (var c in expression)
{
if (escape)
{
value.Term += c.ToString();
escape = false;
}
else if (c == '\\')
{
escape = true;
}
else if (c == '!' && value.Term == "")
{
value.Operator = ListFilterOperator.NotEqual;
negate = true;
}
else if (c == '>' && value.Term == "")
{
value.Operator = negate ? ListFilterOperator.LessThanOrEqual : ListFilterOperator.GreaterThan;
}
else if (c == '<' && value.Term == "")
{
value.Operator = negate ? ListFilterOperator.GreaterThanOrEqual : ListFilterOperator.LessThan;
}
else if (c == '=' && value.Operator == ListFilterOperator.GreaterThan && value.Term == "")
{
value.Operator = ListFilterOperator.GreaterThanOrEqual;
}
else if (c == '=' && value.Operator == ListFilterOperator.LessThan && value.Term == "")
{
value.Operator = ListFilterOperator.LessThanOrEqual;
}
else if (c == '=' && value.Term == "")
{
value.Operator = ListFilterOperator.Equal;
}
else if (c == '*')
{
value.WildcardPositions.Add(value.Term.Length);
}
else if (c == '|')
{
result.Values.Add(value);
value = new ListFilterValue();
negate = false;
}
else
{
value.Term += c.ToString();
}
}
result.QueryParams.Add(new Tuple <string, string>(name, expression));
result.Values.Add(value);
return(result);
}
