{
  "settings": {
    "index": {
      "analysis": {
        "normalizer": {
          "default": {
            "type": "custom",
            "char_filter": [],
            "filter": [
              "lowercase"
            ]
          },
          "caseSensitive": {
            "type": "custom",
            "char_filter": [],
            "filter": []
          }
        }
      }
    }
  },
  "mappings": {
    "properties": {
      "update_ts": {
        "type": "date"
      },
      "source_release_ident": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "source_work_ident": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "source_wikipedia_article": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "source_release_stage": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "source_release_year": {
        "type": "integer"
      },
      "ref_index": {
        "type": "integer"
      },
      "ref_key": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "ref_locator": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "target_release_ident": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "target_work_ident": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "target_openlibrary_work": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "target_url_surt": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "match_provenance": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "match_status": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "match_reason": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "target_unstructured": {
        "type": "keyword",
        "normalizer": "default",
        "doc_values": false
      },
      "target_csl": {
        "type": "flattened"
      }
    }
  }
}