what is the use of StringField.TYPE_NOT_STORED

Question

I am trying to understand different Field options provided by Lucene, As per my knowledge Lucene will provide the following field options

TextField.TYPE_STORED - Analyzed & stored
TextField.TYPE_NOT_STORED - Analyzed & Not stored
StringField.TYPE_STORED - Not Analyzed & stored
StringField.TYPE_NOT_STORED - NOT Analyzed & NOT stored

StringField.TYPE_NOT_STORED -- fields will not be able to do a search also retrieve the content. What is the use of adding these type of fields to my Lucene documents?

score 4 · Accepted Answer · answered Sep 12 '17 at 07:32

4

Not Analyzed doesn't mean it won't be searchable, it means it will be just searched as is. So, for example if your string token is John, than if you will search for john you won't be able to find it. You also won't apply any analyzer/filter to these field.

Basically, this type is using for something where you do not want to have analyzers and you do not want to retrieve it, like id lookups or something similar.

answered Sep 12 '17 at 07:32

Mysterion

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ok, so we can do a search on top of these fields as well but we need an exact match. Generally used for match – N.Dinesh.Reddy Sep 12 '17 at 07:52
yes, i would say it's rather for lookup, but of course you could figure out your use-case by yourself – Mysterion Sep 12 '17 at 07:54

what is the use of StringField.TYPE_NOT_STORED

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