nori_readingform token filter

The nori_readingform token filter rewrites tokens written in Hanja to their Hangul form.

PUT nori_sample
{
    "settings": {
        "index":{
            "analysis":{
                "analyzer" : {
                    "my_analyzer" : {
                        "tokenizer" : "nori_tokenizer",
                        "filter" : ["nori_readingform"]
                    }
                }
            }
        }
    }
}

GET nori_sample/_analyze
{
  "analyzer": "my_analyzer",
  "text": "鄕歌"      
}

A token written in Hanja: Hyangga

Which responds with:

{
  "tokens" : [ {
    "token" : "향가",     
    "start_offset" : 0,
    "end_offset" : 2,
    "type" : "word",
    "position" : 0
  }]
}

The Hanja form is replaced by the Hangul translation.