Question

I have a property in my index (using the Advanced Database Crawler) for an archive date.

I want to find all items where the date is null or in the future….Date range search will accomplish the second part, but what about the first?

Answer 1

In the DateFieldCrawler class, we modified the following code:

public override string GetValue()
{
 if (String.IsNullOrEmpty(_field.Value))
 {
     return DateTools.DateToString(DateTime.MinValue, DateTools.Resolution.DAY);
 }

 if (FieldTypeManager.GetField(_field) is DateField)
 {
    var dateField = new DateField(_field);

    if(dateField.DateTime > DateTime.MinValue)
    {
       return DateTools.DateToString(dateField.DateTime, DateTools.Resolution.DAY);
    }
 }

 return String.Empty;
}

By storing this value, we were able to perform the following queries to include null value dates:

DateRangeSearchParam.DateRange toFirstDate =
                    new DateRangeSearchParam.DateRange(EVENT_FIRST_DATE,     
                    DateTime.MinValue, toDate.Value);
toFirstDate.InclusiveEnd = false;
eventDates.Add(toFirstDate);