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b7e3a1e14b
* delete asciidoc files
* add migrated files
* fix errors
* Disable docs tests
* Clarify release notes page titles
* Revert "Clarify release notes page titles"
This reverts commit 8be688648d.
* Comment out edternal URI images
* Clean up query languages landing pages, link to conceptual docs
* Add .md to url
* Fixes inference processor nesting.
---------
Co-authored-by: Liam Thompson <32779855+leemthompo@users.noreply.github.com>
Co-authored-by: Liam Thompson <leemthompo@gmail.com>
Co-authored-by: Martijn Laarman <Mpdreamz@gmail.com>
Co-authored-by: István Zoltán Szabó <szabosteve@gmail.com>
48 lines
1.8 KiB
Markdown
48 lines
1.8 KiB
Markdown
---
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mapped_pages:
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- https://www.elastic.co/guide/en/elasticsearch/plugins/current/mapper-annotated-text-highlighter.html
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---
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# Using the annotated highlighter [mapper-annotated-text-highlighter]
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The `annotated-text` plugin includes a custom highlighter designed to mark up search hits in a way which is respectful of the original markup:
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```console
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# Example documents
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PUT my-index-000001/_doc/1
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{
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"my_field": "The cat sat on the [mat](sku3578)"
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}
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GET my-index-000001/_search
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{
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"query": {
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"query_string": {
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"query": "cats"
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}
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},
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"highlight": {
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"fields": {
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"my_field": {
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"type": "annotated", <1>
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"require_field_match": false
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}
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}
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}
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}
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```
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1. The `annotated` highlighter type is designed for use with annotated_text fields
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The annotated highlighter is based on the `unified` highlighter and supports the same settings but does not use the `pre_tags` or `post_tags` parameters. Rather than using html-like markup such as `<em>cat</em>` the annotated highlighter uses the same markdown-like syntax used for annotations and injects a key=value annotation where `_hit_term` is the key and the matched search term is the value e.g.
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```
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The [cat](_hit_term=cat) sat on the [mat](sku3578)
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```
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The annotated highlighter tries to be respectful of any existing markup in the original text:
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* If the search term matches exactly the location of an existing annotation then the `_hit_term` key is merged into the url-like syntax used in the `(...)` part of the existing annotation.
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* However, if the search term overlaps the span of an existing annotation it would break the markup formatting so the original annotation is removed in favour of a new annotation with just the search hit information in the results.
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* Any non-overlapping annotations in the original text are preserved in highlighter selections
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