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You're reading from  Advanced Elasticsearch 7.0

Product typeBook
Published inAug 2019
Reading LevelBeginner
PublisherPackt
ISBN-139781789957754
Edition1st Edition
Languages
Java
Tools
Elasticsearch
Concepts
Enterprise Search
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Author (1)
Wai Tak Wong
Wai Tak Wong
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Wai Tak Wong

Wai Tak Wong is a faculty member in the Department of Computer Science at Kean University, NJ, USA. He has more than 15 years professional experience in cloud software design and development. His PhD in computer science was obtained at NJIT, NJ, USA. Wai Tak has served as an associate professor in the Information Management Department of Chung Hua University, Taiwan. A co-founder of Shanghai Shellshellfish Information Technology, Wai Tak acted as the Chief Scientist of the R&D team, and he has published more than a dozen algorithms in prestigious journals and conferences. Wai Tak began his search and analytics technology career with Elasticsearch in the real estate market and later applied this to data management and FinTech data services.
Read more about Wai Tak Wong

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Dynamic mapping

The official definition of dynamic mapping is to detect the data types of new fields of the documents immediately during indexing, instead of first creating an index, defining the fields, and establishing its datatype mapping. Therefore, document indexing operations can be executed the fly without predefining the field mapping. Newly added fields can be picked up during indexing at any time. We'll first check with the mapping rules and then practice with a sample document to see the indexing result.

Mapping rules

The Elasticsearch document is in JavaScript Object Notation (JSON) format. In JSON, the valid datatypes are string, number, JSON object, array, Boolean, and null. The JSON data value and the mapping...

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Advanced Elasticsearch 7.0
Published in: Aug 2019Publisher: PacktISBN-13: 9781789957754
© 2019 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Wai Tak Wong

Wai Tak Wong is a faculty member in the Department of Computer Science at Kean University, NJ, USA. He has more than 15 years professional experience in cloud software design and development. His PhD in computer science was obtained at NJIT, NJ, USA. Wai Tak has served as an associate professor in the Information Management Department of Chung Hua University, Taiwan. A co-founder of Shanghai Shellshellfish Information Technology, Wai Tak acted as the Chief Scientist of the R&D team, and he has published more than a dozen algorithms in prestigious journals and conferences. Wai Tak began his search and analytics technology career with Elasticsearch in the real estate market and later applied this to data management and FinTech data services.
Read more about Wai Tak Wong

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