CODEWITHSUNDEEP
elasticsearch
Menelaos
Menelaos

Reputation: 25725

What is the purpose of FieldType in Elastic Search

Intro

I had a strange issue with elastic search when I had used the following annotation:

@Field(type = FieldType.Date, index = not_analyzed)

And attempted to insert dates with years such as 1000 using the spring elastic search JPA repository.

See: What are elastic searches max and min dates by default?

By changing the FieldType to String, it solved my problem and I did not get a weird error for extreme years.

My question

What is the purpose of the FieldType enum and what do we use it for?

public enum FieldType {
    String,
    Integer,
    Long,
    Date,
    Float,
    Double,
    Boolean,
    Object,
    Auto,
    Nested,
    Ip,
    Attachment;

    private FieldType() {
    }
}

I read the documentation for elastic search and I don't really understand the use.

Upvotes: 1

Views: 397

Answers (1)

Yogi
Yogi

Reputation: 1895

Elastic search supports multiple data-types, Spring FieldType holds enum for allowed ElasticSearch datatypes. It specify in which datatype should elastic search maps the value while storing.

For e.g.

@Field(type = FieldType.String, index = not_analyzed)
private String name;

Above code means ElasticSearch should store name field as 'text'

ElasticSearch data-types

Upvotes: 1

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