DateMath from DateTime.MinValue

die_seltsame · May 17, 2018, 1:43pm

I'm trying to search for a date that is greater than DateTime.MinValue, but elastic throws search_phase_execution_exception. When I create var d = DateMath.Anchored(DateTime.MinValue) , d.Self = null and d.ToString() returns String.Empty. I do not observe this behavior with other dates, f.e. with DateTime.MaxValue.

 "range": {
                  "eventDateUtc": {
                    "gte": "0001-01-01T00:00:00"
                  }
                }

How can I make this filter using Nest? Elasticsearch can search dates that are greater than DateTime.MinValue.

I am using Nest 6.0.0 and Elastic 6.2.0

Why isValid is defined in this way?

github.com

elastic/elasticsearch-net/blob/master/src/Nest/CommonOptions/DateMath/DateMath.cs#L84


			{
				var rounding = match.Groups["rounding"].Value.Substring(1).ToEnum<DateMathTimeUnit>(StringComparison.Ordinal);
				if (rounding.HasValue)
					return math.RoundTo(rounding.Value);
			}
			return math;
		}


		public override string ToString()
		{
			var isValid = Self.Anchor.Match(d => d != default(DateTime), s => !s.IsNullOrEmpty());
			if (!isValid) return string.Empty;


			var separator = Self.Round.HasValue || Self.Ranges.HasAny() ? "||" : string.Empty;


			var sb = new StringBuilder();
			var anchor = Self.Anchor.Match(
				d => d.ToJsonNetString() + separator,
				s => s == "now" || s.EndsWith("||", StringComparison.Ordinal) ? s : s + separator
			);
			sb.Append(anchor);

system · June 14, 2018, 1:43pm

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