es_mapping.yml

---
# CREATE DTABASE/TABLE equivalent for elasticsearch, in yaml
# fo inline comments.
settings:
  analysis:
    analyzer:
      my_search_analyzer:
        type: custom
        tokenizer: standard
        char_filter:
          - my_char_filter
        filter:
          - standard
          - lowercase
      my_index_analyzer:
        type: custom
        tokenizer: standard
        char_filter:
          - my_char_filter
        filter:
          - resolution
          - lowercase
          - word_delimit
          - my_ngram
          - trim_zero
          - unique
      # For exact matching - separate each character for substring matching + lowercase
      exact_analyzer:
        tokenizer: exact_tokenizer
        filter:
          - lowercase
      # For matching full words longer than the ngram limit (15 chars)
      my_fullword_index_analyzer:
        type: custom
        tokenizer: standard
        char_filter:
          - my_char_filter
        filter:
          - lowercase
          - word_delimit
          # Skip tokens shorter than N characters,
          # since they're already indexed in the main field
          - fullword_min
          - unique

    tokenizer:
      # Splits input into characters, for exact substring matching
      exact_tokenizer:
        type: pattern
        pattern: "(.)"
        group: 1

    filter:
      my_ngram:
        type: edgeNGram
        min_gram: 1
        max_gram: 15
      fullword_min:
        type: length
        # Remember to change this if you change the max_gram below!
        min: 16
      resolution:
        type: pattern_capture
        patterns: ["(\\d+)[xX](\\d+)"]
      trim_zero:
        type: pattern_capture
        patterns: ["0*([0-9]*)"]
      word_delimit:
        type: word_delimiter
        preserve_original: true
        split_on_numerics: false
    char_filter:
      my_char_filter:
        type: mapping
        mappings: ["-=>_", "!=>_", "_=>\\u0020"]
  index:
    # we're running a single es node, so no sharding necessary,
    # plus replicas don't really help either.
    number_of_shards: 1
    number_of_replicas : 0
    mapper:
      # disable elasticsearch's "helpful" autoschema
      dynamic: false
    # since we disabled the _all field, default query the
    # name of the torrent.
    query:
      default_field: display_name
mappings:
  torrent:
    # don't want everything concatenated
    _all:
      enabled: false
    properties:
      id:
        type: long
      display_name:
        # TODO could do a fancier tokenizer here to parse out the
        # the scene convention of stuff in brackets, plus stuff like k-on
        type: text
        analyzer: my_index_analyzer
        fielddata: true # Is this required?
        fields:
          # Multi-field for full-word matching (when going over ngram limits)
          # Note: will have to be queried for, not automatic
          fullword:
            type: text
            analyzer: my_fullword_index_analyzer
          # Stored for exact phrase matching
          exact:
            type: text
            analyzer: exact_analyzer
      created_time:
        type: date
        # Only in the ES index for generating magnet links
      info_hash:
        enabled: false
      filesize:
        type: long
      anonymous:
        type: boolean
      trusted:
        type: boolean
      remake:
        type: boolean
      complete:
        type: boolean
      hidden:
        type: boolean
      deleted:
        type: boolean
      has_torrent:
        type: boolean
      download_count:
        type: long
      leech_count:
        type: long
      seed_count:
        type: long
      comment_count:
        type: long
      # these ids are really only for filtering, thus keyword
      uploader_id:
        type: keyword
      main_category_id:
        type: keyword
      sub_category_id:
        type: keyword