This is how I set up the mappings:
curl -s -XPUT 'localhost:9200/test' -d '{
"mappings": {
"properties": {
"name": {
"street": {
"type": "string",
"index_analyzer": "index_ngram",
"search_analyzer": "search_ngram"
}
}
}
},
"settings": {
"analysis": {
"filter": {
"desc_ngram": {
"type": "edgeNGram",
"min_gram": 3,
"max_gram": 20
}
},
"analyzer": {
"index_ngram": {
"type": "custom",
"tokenizer": "keyword",
"filter": [ "desc_ngram", "lowercase" ]
},
"search_ngram": {
"type": "custom",
"tokenizer": "keyword",
"filter": "lowercase"
}
}
}
}
}'
This is how I built the index:
curl -s -XPUT 'localhost:9200/test/name/1' -d '{ "street": "Lakeshore Dr" }'
curl -s -XPUT 'localhost:9200/test/name/2' -d '{ "street": "Sunnyshore Dr"
}'
curl -s -XPUT 'localhost:9200/test/name/3' -d '{ "street": "Lake View Dr" }'
curl -s -XPUT 'localhost:9200/test/name/4' -d '{ "street": "Shore Dr" }'
If a user attempts to search for "Lake Shore Dr", I want to only match to
document 1/"Lakeshore Dr"
If a user attempts to search for "Lakeview Dr", I want to only match to
document 3/"Lake View Dr"
Here is an example of the query that is not working correctly:
curl -s -XGET 'localhost:9200/test/_search?pretty=true' -d '{
"query":{
"bool":{
"must":[
{
"match":{
"street":{
"query":"lake shore dr",
"type":"boolean"
}
}
}
]
}
}
}';
So is the issue with how I am setting up the mappings (tokenizer?, edgegram
vs ngrams?, size of ngrams?) or the query (I have tried things like setting
the minimum_should_match, and the analyzer to use), but I have not been
able to get the desired results.
Thanks all.
On Thursday, February 6, 2014 10:16:40 AM UTC-5, Binh Ly wrote:
>
> Thale, you are correct - ngrams are usually used at index-time only, but
> in your case and requirements, you might want to experiment both index and
> seach time. I'd probably just increase the edge min ngram size to something
> reasonable like maybe 4(?) and see if that works or not.
>
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