Your issue is casing. You are only applying the synonym filter, which by
default does not lowercase terms. You can either set ignore_case to true
for the synonym filter or apply a lower case filter before the synonym. I
prefer to use the latter approach since I prefer to have all my analyzed
tokens lowercased.

Also, you should only apply the synonym filter at index time. You would
need to create two similar analyzers, one with the synonym filter and one
without. You can set the different ones via index_analyzer and
search_analyzer.

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/mapping-core-types.html#string

Cheers,

Ivan


On Tue, Jul 22, 2014 at 9:33 AM, Daniel Yim <[email protected]> wrote:

> Hi everyone,
>
> I am relatively new to elasticsearch and am having issues with getting my
> synonym filter to work. Can you take a look at the settings and tell me
> where I am going wrong?
>
> I am expecting the search for "aids" to match the search results if I were
> to search for "retrovirology", but this is not happening.
>
> Thanks!
>
> curl -XDELETE "http://localhost:9200/personsearch";
>
> curl -XPUT "http://localhost:9200/personsearch"; -d'
> {
>   "settings": {
>     "index": {
>       "analysis": {
>         "analyzer": {
>           "XYZSynAnalyzer": {
>             "tokenizer": "standard",
>             "filter": [
>               "XYZSynFilter"
>             ]
>           }
>         },
>         "filter": {
>           "XYZSynFilter": {
>             "type": "synonym",
>             "synonyms": [
>               "aids, retrovirology"
>             ]
>           }
>         }
>       }
>     }
>   },
>   "mappings": {
>     "xyzemployee": {
>       "_all": {
>         "analyzer": "XYZSynAnalyzer"
>       },
>       "properties": {
>         "firstName": {
>           "type": "string"
>         },
>         "lastName": {
>           "type": "string"
>         },
>         "middleName": {
>           "type": "string",
>           "include_in_all": false,
>           "index": "not_analyzed"
>         },
>         "specialty": {
>           "type": "string",
>           "analyzer": "XYZSynAnalyzer"
>         }
>       }
>     }
>   }
> }'
>
> curl -XPUT "http://localhost:9200/personsearch/xyzemployee/1"; -d'
> {
>   "firstName": "Don",
>   "middleName": "W.",
>   "lastName": "White",
>   "specialty": "Adult Retrovirology"
> }'
>
> curl -XPUT "http://localhost:9200/personsearch/xyzemployee/2"; -d'
> {
>   "firstName": "Terrance",
>   "middleName": "G.",
>   "lastName": "Gartner",
>   "specialty": "Retrovirology"
> }'
>
> curl -XPUT "http://localhost:9200/personsearch/xyzemployee/3"; -d'
> {
>   "firstName": "Carter",
>   "middleName": "L.",
>   "lastName": "Taylor",
>   "specialty": "Pediatric Retrovirology"
> }'
>
> curl -XGET "
> http://localhost:9200/personsearch/xyzemployee/_search?pretty=true"; -d'
> {
>   "query": {
>     "match": {
>       "specialty": "retrovirology"
>     }
>   }
> }'
>
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