Hello - I am attempting to run a ngram test using elastics 0.90.9. I was
able to replicate the problem I am having in our production system by
following the example from here:
http://blog.rnf.me/2013/exact-substring-search-in-elasticsearch.html
The Mappings looks like this:
{
"mappings": {
"homes": {
"properties": {
"desc": {
"type": "string",
"index_analyzer": "index_ngram",
"search_analyzer": "search_ngram"
}
}
}
},
"settings": {
"analysis": {
"filter": {
"desc_ngram": {
"type": "ngram",
"min_gram": 3,
"max_gram": 8
}
},
"analyzer": {
"index_ngram": {
"type": "custom",
"tokenizer": "keyword",
"filter": [ "desc_ngram", "lowercase" ]
},
"search_ngram": {
"type": "custom",
"tokenizer": "keyword",
"filter": "lowercase"
}
}
}
}
}
The mapping is set up as follows:
curl -s -XPUT 'localhost:9200/listings' -d @settings.json
Three records are inserted into the index as follows:
curl -s -XPUT 'localhost:9200/listings/homes/1' -d '{ "desc": "This is a
lovely home with a large yard." }'
curl -s -XPUT 'localhost:9200/listings/homes/2' -d '{ "desc": "This large
fixer-upper has a gravelly yard." }'
curl -s -XPUT 'localhost:9200/listings/homes/3' -d '{ "desc": "A colonial
mansion with a large yard and a pool." }'
The Search looks like this:
curl -s -XGET 'localhost:9200/listings/homes/_search?pretty=true' -d '{
"query" : { "bool" : { "must" : [ { "match" : { "desc" : { "query" : "large
ya", "type" : "phrase" } } }, { "match" : { "desc" : { "query" : "arge
yar", "type" : "phrase" } } }, { "match" : { "desc" : { "query" : "rge
yard", "type" : "phrase" } } } ] } } }';
The problem is no results are returned. Any input that can be given for a
solution would be appreciated.
Thank you!
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