elasticsearch normalizer and analyzers

normalizervsanalyzer.json

PUT index-test
{
  "settings": {
    "analysis": {
      "normalizer": {
        "my_normalizer": {
          "type": "custom",
          "char_filter": [],
          "filter": ["lowercase", "asciifolding"]
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "foo": {
        "type": "keyword",
        "normalizer": "my_normalizer"
      }
    }
  }
}

PUT /test_index
{
  "settings": {
    "index": {
      "analysis": {
        "filter": {
          "my_graph_synonyms": {
            "type": "synonym_graph",
            "synonyms": [
              "baaar, bar"
            ]
          }
        },
        "analyzer": {
          "custom_index_time_analyzer": {
            "tokenizer": "keyword",
            "filter": [
              "lowercase",
              "stemmer",
              "asciifolding"
            ]
          },
          "search_index_time_analyzer": {
            "tokenizer": "keyword",
            "filter": [
              "lowercase",
              "stemmer",
              "asciifolding",
              "my_graph_synonyms"
            ]
          }
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "foo": {
        "type": "text",
        "analyzer": "custom_index_time_analyzer",
        "search_analyzer": "search_index_time_analyzer"
      }
    }
  }
}

POST test_index/_bulk
{"index":{"_id":"1"}}
{"foo":"bar"}
{"index":{"_id":"2"}}
{"foo":"Bar"}
{"index":{"_id":"3"}}
{"foo":"zas"}
{"index":{"_id":"4"}}
{"foo":"pas"}
{"index":{"_id":"5"}}
{"foo":"tas"}
{"index":{"_id":"6"}}
{"foo":"barry"}
{"index":{"_id":"7"}}
{"foo":"bãr"}

POST test_index/_refresh

# outputs 2 results
GET test_index/_search
{
  "query": {
    "term": {
      "foo": "bar"
    }
  }
}

#outputs 2 results using synonym graph
GET test_index/_search
{
  "query": {
    "match": {
      "foo": "baaar"
    }
  }
}

#outputs 2 results
GET test_index/_search
{
  "query": {
    "match_phrase": {
      "foo": {
        "query": "bar"
      }
    }
  }
}