Class: Queries::Gazetteer::Autocomplete

Inherits:
Query::Autocomplete show all
Includes:
Concerns::AlternateValues
Defined in:
lib/queries/gazetteer/autocomplete.rb

Constant Summary collapse

DEFAULT_LIMIT = 
20

Constants inherited from Query::Autocomplete

Query::Autocomplete::DELEGATED_DEPTH, Query::Autocomplete::DELEGATED_MINIMUM_LENGTH, Query::Autocomplete::LITERAL_RESTRICTION_MAX

Instance Attribute Summary

Attributes inherited from Query::Autocomplete

#delegated_results, #dynamic_limit, #limit, #project_id, #query_string, #restrict_to

Attributes inherited from Query

#query_string, #terms

Instance Method Summary collapse

Methods inherited from Query::Autocomplete

#apply_restriction, #asserted_object_autocomplete, #asserted_object_restriction, #autocomplete_cached, #autocomplete_cached_wildcard_anywhere, #autocomplete_common_name_exact, #autocomplete_common_name_like, #autocomplete_exact_id, #autocomplete_exactly_named, #autocomplete_named, #autocomplete_ordered_wildcard_pieces_in_cached, #cached_facet, #combine_or_clauses, #common_name_name, #common_name_table, #common_name_wild_pieces, #delegated_autocomplete, #exactly_named, #fragments, #integers, #least_levenshtein, #match_wildcard_end_in_cached, #match_wildcard_in_cached, #named, #only_ids, #only_integers?, #order_by_id_rank, #parent, #parent_child_join, #parent_child_where, #pieces, #safe_integers, #scope, #string_fragments, #wildcard_wrapped_integers, #wildcard_wrapped_years, #with_cached, #with_cached_like, #with_id, #with_project_id, #year_letter, #years

Methods inherited from Query

#alphabetic_strings, #alphanumeric_strings, base_name, #base_name, #base_query, #build_terms, #cached_facet, #end_wildcard, #levenshtein_distance, #match_ordered_wildcard_pieces_in_cached, #no_terms?, referenced_klass, #referenced_klass, #referenced_klass_except, #referenced_klass_intersection, #referenced_klass_union, #start_and_end_wildcard, #start_wildcard, #table, #wildcard_pieces

Constructor Details

#initialize(string, **params) ⇒ Autocomplete

Returns a new instance of Autocomplete.



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# File 'lib/queries/gazetteer/autocomplete.rb', line 9

def initialize(string, **params)
  set_alternate_value(params)
  super
end

Instance Method Details

#autocomplete ⇒ Array

Returns:

  • (Array) 


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# File 'lib/queries/gazetteer/autocomplete.rb', line 47

def autocomplete
  queries = updated_queries

  result = []

  queries.each do |q|
    result += q.to_a
    result.uniq!
    break if result.count >= limit
  end

  result.first(limit)
end

#autocomplete_iso_a2 ⇒ Object 



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# File 'lib/queries/gazetteer/autocomplete.rb', line 14

def autocomplete_iso_a2
  return nil if query_string.length != 2
  ::Gazetteer.where('iso_3166_a2 ILIKE ?', query_string)
end

#autocomplete_iso_a3 ⇒ Object 



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# File 'lib/queries/gazetteer/autocomplete.rb', line 19

def autocomplete_iso_a3
  return nil if query_string.length != 3
  ::Gazetteer.where('iso_3166_a3 ILIKE ?', query_string)
end

#updated_queries ⇒ Object 



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# File 'lib/queries/gazetteer/autocomplete.rb', line 24

def updated_queries
  queries = [
    autocomplete_named,
    autocomplete_exact_id,
    matching_alternate_value_on(:name),
    autocomplete_iso_a2,
    autocomplete_iso_a3
  ]

  queries.compact!
  return [] if queries.empty?

  updated_queries = []

  queries.each do |q|
    a = q.where(project_id:) if project_id.present?
    updated_queries << apply_restriction(a) if a
  end

  updated_queries
end