How do I create a default mapping for a field on my documents, that will not be made redundant in the next major version of Elasticsearch? - elasticsearch

Question

I'm on Elasticsearch 7.14.0 where mapping types have been removed.
Following from this question I have learned that the generic URI to PUT documents is /[index]/_doc/[id].
I want to create a default mapping for my documents on the name field:
curl -X PUT "localhost:9200/products?pretty" -H 'Content-Type: application/json' -d'
{
"mappings":{
"properties":{
"name":{
"analyzer":"edge_ngram_analyzer",
"search_analyzer":"standard",
"type":"text"
}
}
},
"settings":{
"analysis":{
"filter":{
"edge_ngram":{
"type":"edge_ngram",
"min_gram":"2",
"max_gram":"25",
"token_chars":[
"letter",
"digit"
]
}
},
"analyzer":{
"edge_ngram_analyzer":{
"filter":[
"lowercase",
"edge_ngram"
],
"tokenizer":"standard"
}
}
}
}
}
'
However creating a new document doesn't apply the analyzer:
curl -X PUT "localhost:9200/products/_doc/1?pretty" -H 'Content-Type: application/json' -d'
{
"name": "Toast"
}
'
curl -X GET "localhost:9200/products/_search?pretty"
{
"took" : 1026,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "products",
"_type" : "_doc",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"name" : "Toast"
}
}
]
}
}
I've tried creating the mapping under the _doc type, but am getting the following error:
curl -X PUT "localhost:9200/products?pretty" -H 'Content-Type: application/json' -d'
{
"mappings":{
"_doc":{
"properties":{
"name":{
"analyzer":"edge_ngram_analyzer",
"search_analyzer":"standard",
"type":"text"
}
}
}
},
"settings":{
"analysis":{
"filter":{
"edge_ngram":{
"type":"edge_ngram",
"min_gram":"2",
"max_gram":"25",
"token_chars":[
"letter",
"digit"
]
}
},
"analyzer":{
"edge_ngram_analyzer":{
"filter":[
"lowercase",
"edge_ngram"
],
"tokenizer":"standard"
}
}
}
}
}
'
{
"error" : {
"root_cause" : [
{
"type" : "illegal_argument_exception",
"reason" : "The mapping definition cannot be nested under a type [_doc] unless include_type_name is set to true."
}
],
"type" : "illegal_argument_exception",
"reason" : "The mapping definition cannot be nested under a type [_doc] unless include_type_name is set to true."
},
"status" : 400
}
However, I've read that:
Elasticsearch 8.x: Specifying types in requests is no longer supported. The include_type_name parameter is removed.
How do I create a default mapping for a field on my documents, that will not be made redundant in the next major version of Elasticsearch?

Answer 1

This question was due to a misunderstanding on my part (new to ES). I thought the returned result from a search would include the underlying analysis of any fields. When I perform a partially matching search, the document is correctly returned, so the above mapping works as intended:
curl -X GET "localhost:9200/products/_search?pretty" -H 'Content-Type: application/json' -d'
{
"query": {
"match": {
"name": "To"
}
}
}
'
{
"took" : 7,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 0.41501677,
"hits" : [
{
"_index" : "products",
"_type" : "_doc",
"_id" : "1",
"_score" : 0.41501677,
"_source" : {
"name" : "Toast"
}
}
]
}
}