Elasticsearch use custom analyzer on filter - search

Question

I was asking on elasticsearch nested filter return empty result about some error I have in the query and wont getting any results, but in the answer I was pointed out that the expression I use for the filter wasn't analyzed as I expect.
I have a custom analyzer to do the work how can I specify in the next query to the filter to use this custom analyzer:
GET /develop/_search?search_type=dfs_query_then_fetch
{
"query": {
"filtered" : {
"query": {
"bool": {
"must": [
{ "match": { "title": "post" }}
]
}
},
"filter": {
"bool": {
"must": [
{"term": {
"featured": 0
}},
{
"nested": {
"path": "seller",
"filter": {
"bool": {
"must": [
{ "term": { "seller.firstName": "Test 3" } }
]
}
},
"_cache" : true
}}
]
}
}
}
},
"sort": [
{
"_score":{
"order": "desc"
}
},{
"created": {
"order": "desc"
}
}
],
"track_scores": true
}

Answer 1

Here is a setup that seems to do what you want. I used the same basic code as the last answer, but used index_analyzer and search_analyzer in the index definition as follows:
curl -XDELETE "http://localhost:9200/my_index"
curl -XPUT "http://localhost:9200/my_index" -d'
{
"settings": {
"number_of_shards": 1,
"number_of_replicas": 0,
"analysis": {
"filter": {
"snowball": { "type": "snowball", "language": "English" },
"english_stemmer": { "type": "stemmer", "language": "english" },
"english_possessive_stemmer": { "type": "stemmer", "language": "possessive_english" },
"stopwords": { "type": "stop", "stopwords": [ "_english_" ] },
"worddelimiter": { "type": "word_delimiter" }
},
"tokenizer": {
"nGram": { "type": "nGram", "min_gram": 3, "max_gram": 20 }
},
"analyzer": {
"custom_analyzer": {
"type": "custom",
"tokenizer": "nGram",
"filter": [
"stopwords",
"asciifolding",
"lowercase",
"snowball",
"english_stemmer",
"english_possessive_stemmer",
"worddelimiter"
]
},
"custom_search_analyzer": {
"type": "custom",
"tokenizer": "standard",
"filter": [
"stopwords",
"asciifolding",
"lowercase",
"snowball",
"english_stemmer",
"english_possessive_stemmer",
"worddelimiter"
]
}
}
}
},
"mappings": {
"posts": {
"properties": {
"title": {
"type": "string",
"analyzer": "custom_analyzer",
"boost": 5
},
"seller": {
"type": "nested",
"properties": {
"firstName": {
"type": "string",
"index_analyzer": "custom_analyzer",
"search_analyzer": "custom_search_analyzer",
"boost": 3
}
}
}
}
}
}
}'
Then added the test docs
curl -XPUT "http://localhost:9200/my_index/posts/1" -d'
{"title": "post", "seller": {"firstName":"Test 1"}}'
curl -XPUT "http://localhost:9200/my_index/posts/2" -d'
{"title": "post", "seller": {"firstName":"Test 2"}}'
curl -XPUT "http://localhost:9200/my_index/posts/3" -d'
{"title": "post", "seller": {"firstName":"Test 3"}}'
And then a couple of match queries in a bool, where one is a multiword query, seems to accomplish what you are wanting:
curl -XPOST "http://localhost:9200/my_index/_search" -d'
{
"query": {
"bool": {
"must": [
{
"match": {
"title": "post"
}
},
{
"nested": {
"path": "seller",
"query": {
"match": {
"seller.firstName": {
"query": "Test 3",
"operator": "and"
}
}
}
}
}
]
}
}
}'
...
{
"took": 5,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 6.8380365,
"hits": [
{
"_index": "my_index",
"_type": "posts",
"_id": "3",
"_score": 6.8380365,
"_source": {
"title": "post",
"seller": {
"firstName": "Test 3"
}
}
}
]
}
}
Here is the code I used:
http://sense.qbox.io/gist/8cd954aa60be8c44f64e4282e15e6b565c945ecb
Does that solve your problem?