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

Author (1)

Wai Tak Wong

Field datatypes

In addition to the mapped types we learned in the previous mapping rules sections, there are still many other datatypes to map for the fields in the document. Field datatypes are defined in the static mapping. In the Dynamic mapping section, we have shown the data structure from the response of the GET mapping request of default_mappings_index. The syntax to set the datatype of a field in static mapping is as follows:

"properties": {
    "field_1": {"type": "field_type_1"},
    "field_2": {"type": "field_type_2", "mapping_parameter2a":"parameter2a_value",..}
}

Let us examine the description and the example usage for each mapping datatype in the following table:

Mapping datatype	Description	Example
Text	Full text value analyzed...

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Advanced Elasticsearch 7.0

Published in: Aug 2019Publisher: PacktISBN-13: 9781789957754

Author (1)

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.
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