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You're reading from  Elasticsearch Indexing

Product typeBook
Published inDec 2015
Publisher
ISBN-139781783987023
Edition1st Edition
Tools
Elasticsearch
Concepts
Enterprise Search
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Author (1)
Huseyin Akdogan
Huseyin Akdogan
author image
Huseyin Akdogan

Hüseyin Akdoğan began his software adventure with the GwBasic programming language. He started learning the Visual Basic language after QuickBasic and developed many applications until 2000, after which he stepped into the world of Web with PHP. After this, he came across Java! In addition to counseling and training activities since 2005, he developed enterprise applications with JavaEE technologies. His areas of expertise are JavaServer Faces, Spring Frameworks, and big data technologies such as NoSQL and Elasticsearch. Along with these, he is also trying to specialize in other big data technologies. Hüseyin also writes articles on Java and big data technologies and works as a technical reviewer of big data books. He was a reviewer of one of the bestselling books, Mastering Elasticsearch – Second Edition.
Read more about Huseyin Akdogan

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Basic concepts and definitions

As stated in the previous chapter, mapping is the process of defining how a document should be mapped to Elasticsearch (if you don't recall, please refer to the Mapping section in the previous chapter). How a field is tokenized, analyzed, and searchable can be found using the mapping mechanism. Keep in mind that mapping is actually a schema definition (we will examine it in detail at the end of this chapter).

Now let's review the basic concepts and definitions.

Metadata fields

All the fields are not returned to us when a document is requested but each document has auto-generated metadata fields with each mapping which have information about the document that allows us to control how the metadata document is indexed. For example, which fields will return with the query results, how long the document will live, and so on.

We will now examine some of those fields.

_source

We have already talked at length about the _source field in Chapter 1, Introduction to Efficient...

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Elasticsearch Indexing
Published in: Dec 2015Publisher: ISBN-13: 9781783987023
© 2015 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Huseyin Akdogan

Hüseyin Akdoğan began his software adventure with the GwBasic programming language. He started learning the Visual Basic language after QuickBasic and developed many applications until 2000, after which he stepped into the world of Web with PHP. After this, he came across Java! In addition to counseling and training activities since 2005, he developed enterprise applications with JavaEE technologies. His areas of expertise are JavaServer Faces, Spring Frameworks, and big data technologies such as NoSQL and Elasticsearch. Along with these, he is also trying to specialize in other big data technologies. Hüseyin also writes articles on Java and big data technologies and works as a technical reviewer of big data books. He was a reviewer of one of the bestselling books, Mastering Elasticsearch – Second Edition.
Read more about Huseyin Akdogan

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