index_options
The index_options
parameter controls what information is added to the inverted index for search and highlighting purposes.
The index_options
parameter is intended for use with text
fields only. Avoid using index_options
with other field data types.
It accepts the following values:
docs
Only the doc number is indexed. Can answer the question Does this term exist in this field?
freqs
Doc number and term frequencies are indexed. Term frequencies are used to score repeated terms higher than single terms.
positions
(default)
Doc number, term frequencies, and term positions (or order) are indexed. Positions can be used for proximity or phrase queries.
offsets
Doc number, term frequencies, positions, and start and end character offsets (which map the term back to the original string) are indexed. Offsets are used by the unified highlighter to speed up highlighting.
PUT my-index-000001
{
"mappings": {
"properties": {
"text": {
"type": "text",
"index_options": "offsets"
}
}
}
}
PUT my-index-000001/_doc/1
{
"text": "Quick brown fox"
}
GET my-index-000001/_search
{
"query": {
"match": {
"text": "brown fox"
}
},
"highlight": {
"fields": {
"text": {}
}
}
}
The |