Class: Queries::Source::Autocomplete

Inherits:
Query::Autocomplete show all
Defined in:
lib/queries/source/autocomplete.rb

Instance Attribute Summary collapse

Attributes inherited from Query::Autocomplete

#dynamic_limit, #project_id, #query_string

Attributes inherited from Query

#query_string, #terms

Instance Method Summary collapse

Methods inherited from Query::Autocomplete

#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, #combine_or_clauses, #common_name_name, #common_name_table, #common_name_wild_pieces, #exactly_named, #fragments, #integers, #least_levenshtein, #match_wildcard_end_in_cached, #match_wildcard_in_cached, #named, #only_ids, #only_integers?, #parent, #parent_child_join, #parent_child_where, #pieces, #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, project_id: nil, limit_to_project: false) ⇒ Autocomplete

Returns a new instance of Autocomplete.

Parameters:

  • args (Hash) 


11
12
13
14
 
# File 'lib/queries/source/autocomplete.rb', line 11

def initialize(string, project_id: nil, limit_to_project: false)
  @limit_to_project = limit_to_project
  super
end

Instance Attribute Details

#limit_to_project ⇒ Boolean

Either match against all Sources (default) or just those with ProjectSource

Parameters:

  • limit_to_project (String) —

    `true` or `false`

Returns:

  • (Boolean) 


8
9
10
 
# File 'lib/queries/source/autocomplete.rb', line 8

def limit_to_project
  @limit_to_project
end

Instance Method Details

#author_from_author_year ⇒ String

Returns:

  • (String) 


176
177
178
179
 
# File 'lib/queries/source/autocomplete.rb', line 176

def author_from_author_year
  query_string.match(/[[[:word:]]]+/).to_a.last
  #query_string.match(/^(.+?)\W/).to_a.last
end

#autocomplete ⇒ Array

Returns:

  • (Array) 


199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
 
# File 'lib/queries/source/autocomplete.rb', line 199

def autocomplete

  # [ query, order by use if true- don't if nil ]
  queries = [
    [ autocomplete_exact_id, false],
    [ autocomplete_identifier_identifier_exact, false],
    [ autocomplete_exact_author_year_letter&.limit(20), true],
    [ autocomplete_identifier_cached_exact, false],
    [ autocomplete_exact_author_year&.limit(20), true],
    [ autocomplete_start_author_year&.limit(20), true],
    [ autocomplete_wildcard_author_exact_year&.limit(20), true],
    [ autocomplete_exact_author&.limit(20), true],
    [ autocomplete_start_of_author&.limit(20), true],
    #[ autocomplete_wildcard_anywhere_exact_year&.limit(10), true],
    [ autocomplete_identifier_cached_like, true],
    [ autocomplete_exact_in_cached&.limit(20), true],
    [ autocomplete_ordered_wildcard_pieces_in_cached&.limit(20), true],
    [ autocomplete_cached_wildcard_anywhere&.limit(20), true],
    [ autocomplete_start_of_title&.limit(20), true],
    [ autocomplete_wildcard_of_title_alternate&.limit(20), true]
  ]

  queries.delete_if{|a,b| a.nil?} # Note this pattern differs because [[]] so we don't use compact. /lib/queries/repository/autocomplete.rb follows same pattern

  result = []

  pr_id = project_id.join(',') if project_id
  queries.each do |q, scope|
    a = q

    # Limit autocomplete to ONLY project sources if limit_to_project == true
    if project_id.present? && limit_to_project
      a = a.joins(:project_sources).where(member_of_project_id.to_sql)
    end

    # Order results by number of times used *in this project*
    if project_id.present? && scope && query_string.length > 3
      a = a.left_outer_joins(:citations)
        .left_outer_joins(:project_sources)
        .select("sources.*, COUNT(citations.id) AS use_count, CASE WHEN project_sources.project_id IN (#{pr_id}) THEN project_sources.project_id ELSE NULL END AS in_project")
        .where('citations.project_id IN (?) OR citations.project_id NOT IN (?) OR citations.project_id IS NULL', pr_id, pr_id)
        .group('sources.id, citations.project_id, project_sources.project_id')
        .order('in_project, use_count DESC')
    end
    a ||= q
    result += a.to_a
    result.uniq!
    break if result.count > 19
  end
  result[0..19]
end

#autocomplete_any_author ⇒ ActiveRecord::Relation

Returns author matches any full word exactly

!!  Not used currently.

Returns:

  • (ActiveRecord::Relation) —

    author matches any full word exactly

    !!  Not used currently



26
27
28
29
 
# File 'lib/queries/source/autocomplete.rb', line 26

def autocomplete_any_author
  a = table[:cached_author_string].matches_regexp('\m' + query_string + '\M')
  base_query.where(a.to_sql).limit(20)
end

#autocomplete_exact_author ⇒ ActiveRecord::Relation

Returns if and only iff author string matches.

Returns:

  • (ActiveRecord::Relation) —

    if and only iff author string matches



18
19
20
21
 
# File 'lib/queries/source/autocomplete.rb', line 18

def autocomplete_exact_author
  a = table[:cached_author_string].matches(query_string)
  base_query.where(a.to_sql)
end

#autocomplete_exact_author_year ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


97
98
99
100
101
102
103
104
 
# File 'lib/queries/source/autocomplete.rb', line 97

def autocomplete_exact_author_year
  return nil if query_string.split(' ').count > 2
  a = match_exact_author
  d = match_year
  return nil if a.nil? || d.nil?
  z = a.and(d)
  base_query.where(z.to_sql)
end

#autocomplete_exact_author_year_letter ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


87
88
89
90
91
92
93
94
 
# File 'lib/queries/source/autocomplete.rb', line 87

def autocomplete_exact_author_year_letter
  a = match_exact_author
  d = match_year_suffix
  c = match_year
  return nil if [a,d,c].include?(nil)
  z = a.and(d).and(c)
  base_query.where(z.to_sql)
end

#autocomplete_exact_in_cached ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


127
128
129
130
131
 
# File 'lib/queries/source/autocomplete.rb', line 127

def autocomplete_exact_in_cached
  a = with_cached_like
  return nil if a.nil?
  base_query.where(a.to_sql)
end

#autocomplete_partial_author ⇒ ActiveRecord::Relation

Returns author matches partial string

!! Not used currently.

Returns:

  • (ActiveRecord::Relation) —

    author matches partial string

    !! Not used currently



41
42
43
44
 
# File 'lib/queries/source/autocomplete.rb', line 41

def autocomplete_partial_author
  a = table[:cached_author_string].matches('%' + query_string + '%')
  base_query.where(a.to_sql).limit(5)
end

#autocomplete_start_author_year ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


107
108
109
110
111
112
113
114
 
# File 'lib/queries/source/autocomplete.rb', line 107

def autocomplete_start_author_year
  return nil if query_string.split(' ').count > 2
  a = match_start_author
  d = match_year
  return nil if a.nil? || d.nil?
  z = a.and(d)
  base_query.where(z.to_sql)
end

#autocomplete_start_of_author ⇒ ActiveRecord::Relation

Returns author matches start.

Returns:

  • (ActiveRecord::Relation) —

    author matches start



33
34
35
36
 
# File 'lib/queries/source/autocomplete.rb', line 33

def autocomplete_start_of_author
  a = table[:cached_author_string].matches(query_string + '%')
  base_query.where(a.to_sql)
end

#autocomplete_start_of_title ⇒ ActiveRecord::Relation

Returns title matches start.

Returns:

  • (ActiveRecord::Relation) —

    title matches start



55
56
57
58
 
# File 'lib/queries/source/autocomplete.rb', line 55

def autocomplete_start_of_title
  a = table[:title].matches(query_string + '%')
  base_query.where(a.to_sql)
end

#autocomplete_wildcard_anywhere_exact_year ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


134
135
136
137
138
139
140
 
# File 'lib/queries/source/autocomplete.rb', line 134

def autocomplete_wildcard_anywhere_exact_year
  a = match_year
  b = match_wildcard_in_cached
  return nil if a.nil? || b.nil?
  c = a.and(b)
  base_query.where(c.to_sql)
end

#autocomplete_wildcard_author_exact_year ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


117
118
119
120
121
122
123
124
 
# File 'lib/queries/source/autocomplete.rb', line 117

def autocomplete_wildcard_author_exact_year
  return nil if query_string.split(' ').count > 2
  a = match_year
  d = match_wildcard_author
  return nil if a.nil? || d.nil?
  z = a.and(d)
  base_query.where(z.to_sql)
end

#autocomplete_wildcard_of_title_alternate ⇒ ActiveRecord::Relation

Returns title matches wildcard on alternate.

Returns:

  • (ActiveRecord::Relation) —

    title matches wildcard on alternate



62
63
64
65
 
# File 'lib/queries/source/autocomplete.rb', line 62

def autocomplete_wildcard_of_title_alternate
  base_query.joins(:alternate_values).
    where("alternate_values.alternate_value_object_attribute = 'title' AND alternate_values.value ILIKE ?", '%' + query_string + '%')
end

#autocomplete_wildcard_pieces_and_year ⇒ ActiveRecord::Relation

Returns author matches partial string.

Returns:

  • (ActiveRecord::Relation) —

    author matches partial string



69
70
71
72
73
74
75
 
# File 'lib/queries/source/autocomplete.rb', line 69

def autocomplete_wildcard_pieces_and_year
  a = match_ordered_wildcard_pieces_in_cached
  b = match_year
  return nil if a.nil? || b.nil?
  c = a.and(b)
  base_query.where(c.to_sql).limit(5)
end

#autocomplete_year ⇒ ActiveRecord::Relation

Returns multi-year match? otherwise pointless.

Returns:

  • (ActiveRecord::Relation) —

    multi-year match? otherwise pointless



48
49
50
51
 
# File 'lib/queries/source/autocomplete.rb', line 48

def autocomplete_year
  a = table[:year].eq_any(years)
  base_query.where(a.to_sql).limit(5)
end

#autocomplete_year_letter ⇒ ActiveRecord::Relation?

Returns:

  • (ActiveRecord::Relation, nil) 


78
79
80
81
82
83
84
 
# File 'lib/queries/source/autocomplete.rb', line 78

def autocomplete_year_letter
  a = match_year
  b = match_year_suffix
  return nil if a.nil? || b.nil?
  c = a.and(b)
  base_query.where(c.to_sql).limit(10)
end

#fragment_year_matches ⇒ ActiveRecord::Relation?

Returns if user provides 5 or fewer strings and any number of years look for any string && year.

Returns:

  • (ActiveRecord::Relation, nil) —

    if user provides 5 or fewer strings and any number of years look for any string && year



188
189
190
191
192
193
194
195
196
 
# File 'lib/queries/source/autocomplete.rb', line 188

def fragment_year_matches
  if fragments.any?
    s = table[:cached].matches_any(fragments)
    s = s.and(table[:year].eq_any(years)) if !years.empty?
    s
  else
    nil
  end
end

#match_exact_author ⇒ Arel::Nodes::Equatity

Returns:

  • (Arel::Nodes::Equatity) 


151
152
153
 
# File 'lib/queries/source/autocomplete.rb', line 151

def match_exact_author
  table[:cached_author_string].matches(author_from_author_year)
end

#match_start_author ⇒ Arel::Nodes::Equatity

Returns:

  • (Arel::Nodes::Equatity) 


156
157
158
159
160
 
# File 'lib/queries/source/autocomplete.rb', line 156

def match_start_author
  a = author_from_author_year
  return nil if a.blank?
  table[:cached_author_string].matches(a + '%')
end

#match_wildcard_author ⇒ Arel::Nodes::Matches

match ALL wildcards, but unordered, if 2 - 6 pieces provided

Returns:

  • (Arel::Nodes::Matches) 


144
145
146
147
148
 
# File 'lib/queries/source/autocomplete.rb', line 144

def match_wildcard_author
  b = fragments
  return nil if b.empty?
  a = table[:cached_author_string].matches_all(b)
end

#match_year ⇒ Arel::Nodes::Equatity

Returns:

  • (Arel::Nodes::Equatity) 


169
170
171
172
173
 
# File 'lib/queries/source/autocomplete.rb', line 169

def match_year
  a = years.first
  return nil if a.nil?
  table[:year].eq(a)
end

#match_year_suffix ⇒ Arel::Nodes::Equatity

Returns:

  • (Arel::Nodes::Equatity) 


163
164
165
166
 
# File 'lib/queries/source/autocomplete.rb', line 163

def match_year_suffix
  return nil if year_letter.blank?
  table[:year_suffix].eq(year_letter)
end

#member_of_project_id ⇒ Arel::Nodes::Equatity

Returns:

  • (Arel::Nodes::Equatity) 


182
183
184
 
# File 'lib/queries/source/autocomplete.rb', line 182

def member_of_project_id
  project_sources_table[:project_id].eq_any(project_id)
end

#project_sources_table ⇒ Arel::Table

Returns:

  • (Arel::Table) 


252
253
254
 
# File 'lib/queries/source/autocomplete.rb', line 252

def project_sources_table
  ::ProjectSource.arel_table
end