Format to use for indexing DateRangeField and proper model field type to use?

[SirMrDexter]

I have been going through the docs to try and understand the right way to index DateRangeFields in Solr using SolrNet. So far I only found samples about how to query them. But none of them explain how to index them. Like what's the correct format I should send them in JSON.

I tried sending below JSON values for testing and they all are accepted with a ok response code and I can see those values when I query them as well.

"date_ranges_test":["2021-02-21T00:00:00Z", "2021-02-22T00:00:00Z"],

"date_ranges_test":[["2021-02-21T00:00:00Z", "2021-02-22T00:00:00Z"]],

"date_ranges_test":["[2021-02-21T00:00:00Z TO 2021-02-22T00:00:00Z]"],

So not sure what's correct. One thing to note is the stored values are exactly what I send, except, 2D arrays are flattened to 1D.

Also what's the model format I should use in C#. Is it a 1D array or a 2D array of DateTime objects or I am expected to create string values in a specific format.

Any help is much appreciated.

Thanks

[mausch]

SolrNet doesn't support DateRangeFields at the moment.
The easiest way for you to do this in your code would be a .NET DateRangeField class with a TypeConverter for serialization.

[SirMrDexter]

@mausch Thanks for the suggestion. Any plans for including this in the near future. Happy to create a branch with the suggested solution to speed things up if needed.

Also I am guessing the format I should go with should be

"date_ranges_test":["[2021-02-21T00:00:00Z TO 2021-02-22T00:00:00Z]"],

Am I right?

[mausch]

The TypeConverter solution I mentioned is good for easily extending SolrNet externally.
If you're planning on sending a PR implementing this the way to do it would be:

1. Write a plain DateRange class modelling the actual date range, similar to what we have with SolrNet.Location or SolrNet.Money
2. Implement an AbstractFieldSerializer<DateRange>
3. Register the new field serializer in https://github.com/SolrNet/SolrNet/blob/master/SolrNet/Impl/FieldSerializers/DefaultFieldSerializer.cs
4. Implement an ISolrFieldParser
5. Register the new field parser in https://github.com/SolrNet/SolrNet/blob/master/SolrNet/Impl/FieldParsers/DefaultFieldParser.cs
6. Write some tests

the format I should go with should be

No idea, I've not used this Solr feature 🙂