Module: Estella::Analysis

Extended by:

ActiveSupport::Concern

Defined in:

lib/estella/analysis.rb

Constant Summary

FRONT_NGRAM_FILTER =

{ type: 'edgeNGram', min_gram: 2, max_gram: 15, side: 'front' }

DEFAULT_ANALYZER =

{ type: 'custom', tokenizer: 'standard_tokenizer', filter: %w[lowercase asciifolding] }

SNOWBALL_ANALYZER =

{ type: 'custom', tokenizer: 'standard_tokenizer', filter: %w[lowercase asciifolding snowball] }

SHINGLE_ANALYZER =

{ type: 'custom', tokenizer: 'standard_tokenizer', filter: %w[shingle lowercase asciifolding] }

NGRAM_ANALYZER =

{ type: 'custom', tokenizer: 'standard_tokenizer', filter: %w[lowercase asciifolding front_ngram_filter] }

DEFAULT_ANALYSIS =

{
  tokenizer: {
    standard_tokenizer: { type: 'standard' }
  },
  filter: {
    front_ngram_filter: FRONT_NGRAM_FILTER
  },
  analyzer: {
    default_analyzer: DEFAULT_ANALYZER,
    snowball_analyzer: SNOWBALL_ANALYZER,
    shingle_analyzer: SHINGLE_ANALYZER,
    ngram_analyzer: NGRAM_ANALYZER,
    search_analyzer: DEFAULT_ANALYZER
  }
}

DEFAULT_FIELDS =

{
  default: { type: 'text', analyzer: 'default_analyzer' },
  snowball: { type: 'text', analyzer: 'snowball_analyzer' },
  shingle: { type: 'text', analyzer: 'shingle_analyzer' },
  ngram: { type: 'text', analyzer: 'ngram_analyzer', search_analyzer: 'search_analyzer' }
}

DEFAULT_FIELD_FACTORS =

{
  default: 10,
  ngram: 10,
  snowball: 3,
  shingle: 2,
  search: 2
}

FULLTEXT_ANALYSIS =

DEFAULT_FIELDS.keys

DEFAULT_SETTINGS =

if defined? Rails && Rails.env == 'test'
  # Ensure no sharding in test env in order to enforce deterministic scores.
  { analysis: DEFAULT_ANALYSIS, index: { number_of_shards: 1, number_of_replicas: 1 } }
else
  { analysis: DEFAULT_ANALYSIS }
end