Class: Arel::Visitors::Oracle

Inherits:
Object
  • Object
show all
Defined in:
lib/arel_extensions/visitors/oracle.rb

Constant Summary collapse

SPECIAL_CHARS = 
{"\t" => 'CHR(9)', "\n" => 'CHR(10)', "\r" => 'CHR(13)'}
DATE_MAPPING = 
{'d' => 'DAY', 'm' => 'MONTH', 'w' => 'IW', 'y' => 'YEAR', 'wd' => 'D', 'h' => 'HOUR', 'mn' => 'MINUTE', 's' => 'SECOND'}
DATE_FORMAT_DIRECTIVES = 
{
  '%Y' => 'YYYY', '%C' => 'CC', '%y' => 'YY', '%m' => 'MM', '%B' => 'Month', '%^B' => 'MONTH', '%b' => 'Mon', '%^b' => 'MON',
  '%V' => 'IW', '%G' => 'IYYY',                                                                       # ISO week number and year of week
  '%d' => 'DD', '%e' => 'FMDD', '%j' => 'DDD', '%w' => '', '%a' => 'Dy', '%A' => 'Day',               # day, weekday
  '%H' => 'HH24', '%k' => '', '%I' => 'HH', '%l' => '', '%P' => 'am', '%p' => 'AM',                   # hours
  '%M' => 'MI', '%S' => 'SS', '%L' => 'MS', '%N' => 'US', '%z' => 'tz'                                # seconds, subseconds
}
NUMBER_COMMA_MAPPING =

seconds, subseconds

{'en_US' => '.,', 'fr_FR' => ',', 'sv_SE' => ', '}

Instance Method Summary collapse

Instance Method Details

#get_time_converted(element) ⇒ Object 



538
539
540
541
542
543
544
545
546
547
548
549
550
551
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 538

def get_time_converted element
  if element.is_a?(Time)
    ArelExtensions::Nodes::Format.new [element, '%H:%M:%S']
  elsif element.is_a?(Arel::Attributes::Attribute)
    col = Arel.column_of(element.relation.table_name, element.name.to_s)
    if col && (col.type == :time)
      ArelExtensions::Nodes::Format.new [element, '%H:%M:%S']
    else
      element
    end
  else
    element
  end
end

#grouping_array_or_grouping_element(o, collector) ⇒ Object

Utilized by GroupingSet, Cube & RollUp visitors to handle grouping aggregation semantics



720
721
722
723
724
725
726
727
728
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 720

def grouping_array_or_grouping_element(o, collector)
  if o.expr.is_a? Array
    collector << "( "
    visit o.expr, collector
    collector << " )"
  else
    visit o.expr, collector
  end
end

#visit_Arel_Attributes_Attribute(o, collector) ⇒ Object 



625
626
627
628
629
630
631
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 625

def visit_Arel_Attributes_Attribute o, collector
  join_name = o.relation.table_alias || o.relation.name
  if join_name.length > 30
    join_name = Arel.shorten(join_name)
  end
  collector << "#{quote_table_name join_name}.#{quote_column_name o.name}"
end

#visit_Arel_Nodes_As(o, collector) ⇒ Object 



605
606
607
608
609
610
611
612
613
614
615
616
617
618
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 605

def visit_Arel_Nodes_As o, collector
  if o.left.is_a?(Arel::Nodes::Binary)
    collector << '('
    collector = visit o.left, collector
    collector << ')'
  else
    collector = visit o.left, collector
  end
  quote = /(\A".*"\z)|\A[a-zA-Z_]*\z/.match?(o.right.to_s) ? '' : '"'
  collector << " AS #{quote}"
  collector = visit o.right, collector
  collector << "#{quote}"
  collector
end

#visit_Arel_Nodes_GreaterThan(o, collector) ⇒ Object 



563
564
565
566
567
568
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 563

def visit_Arel_Nodes_GreaterThan o, collector
  collector = visit get_time_converted(o.left), collector
  collector << ' > '
  collector = visit get_time_converted(o.right), collector
  collector
end

#visit_Arel_Nodes_GreaterThanOrEqual(o, collector) ⇒ Object 



555
556
557
558
559
560
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 555

def visit_Arel_Nodes_GreaterThanOrEqual o, collector
  collector = visit get_time_converted(o.left), collector
  collector << ' >= '
  collector = visit get_time_converted(o.right), collector
  collector
end

#visit_Arel_Nodes_LessThan(o, collector) ⇒ Object 



579
580
581
582
583
584
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 579

def visit_Arel_Nodes_LessThan o, collector
  collector = visit get_time_converted(o.left), collector
  collector << ' < '
  collector = visit get_time_converted(o.right), collector
  collector
end

#visit_Arel_Nodes_LessThanOrEqual(o, collector) ⇒ Object 



571
572
573
574
575
576
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 571

def visit_Arel_Nodes_LessThanOrEqual o, collector
  collector = visit get_time_converted(o.left), collector
  collector << ' <= '
  collector = visit get_time_converted(o.right), collector
  collector
end

#visit_Arel_Nodes_NotRegexp(o, collector) ⇒ Object 



355
356
357
358
359
360
361
362
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 355

def visit_Arel_Nodes_NotRegexp o, collector
  collector << ' NOT REGEXP_LIKE('
  collector = visit o.left, collector
  collector << COMMA
  collector = visit o.right, collector
  collector << ')'
  collector
end

#visit_Arel_Nodes_Regexp(o, collector) ⇒ Object 



346
347
348
349
350
351
352
353
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 346

def visit_Arel_Nodes_Regexp o, collector
  collector << ' REGEXP_LIKE('
  collector = visit o.left, collector
  collector << COMMA
  collector = visit o.right, collector
  collector << ')'
  collector
end

#visit_Arel_Nodes_RollUp(o, collector) ⇒ Object 



129
130
131
132
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 129

def visit_Arel_Nodes_RollUp(o, collector)
  collector << "ROLLUP"
  grouping_array_or_grouping_element o, collector
end

#visit_Arel_Nodes_SelectStatement(o, collector) ⇒ Object 



588
589
590
591
592
593
594
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 588

def visit_Arel_Nodes_SelectStatement o, collector
  if !(collector.value.blank? || (collector.value.is_a?(Array) && collector.value[0].blank?)) && o.limit.blank? && o.offset.blank?
    o = o.dup
    o.orders = []
  end
  old_visit_Arel_Nodes_SelectStatement(o, collector)
end

#visit_Arel_Nodes_TableAlias(o, collector) ⇒ Object 



597
598
599
600
601
602
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 597

def visit_Arel_Nodes_TableAlias o, collector
  if o.name.length > 30
    o = Arel::Table.new(o.table_name).alias(Arel.shorten(o.name))
  end
  old_visit_Arel_Nodes_TableAlias(o, collector)
end

#visit_ArelExtensions_InsertManager_BulkValues(o, collector) ⇒ Object 



492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 492

def visit_ArelExtensions_InsertManager_BulkValues o, collector
  collector << '('
  o.left.each_with_index do |row, idx| # values
    collector << ' UNION ALL ' if idx != 0
    collector << '(SELECT '
    len = row.length - 1
    row.zip(o.cols).each_with_index { |(value, attr), i|
      case value
      when Arel::Nodes::SqlLiteral, Arel::Nodes::BindParam
        collector = visit value, collector
      else
        collector << quote(value, attr && column_for(attr)).to_s
      end
      collector << COMMA unless i == len
    }
    collector << ' FROM DUAL)'
  end
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_AiIMatches(o, collector) ⇒ Object 



72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 72

def visit_ArelExtensions_Nodes_AiIMatches o, collector
  collector = visit o.left.ai_collate, collector
  collector << ' LIKE '
  collector = visit o.right.ai_collate, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_AiMatches(o, collector) ⇒ Object 



60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 60

def visit_ArelExtensions_Nodes_AiMatches o, collector
  collector = visit o.left.ai_collate, collector
  collector << ' LIKE '
  collector = visit o.right.ai_collate, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_As(o, collector) ⇒ Object 



620
621
622
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 620

def visit_ArelExtensions_Nodes_As o, collector
  visit_Arel_Nodes_As o, collector
end

#visit_ArelExtensions_Nodes_Blank(o, collector) ⇒ Object 



436
437
438
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 436

def visit_ArelExtensions_Nodes_Blank o, collector
  visit o.expr.trim.length.coalesce(0).eq(0), collector
end

#visit_ArelExtensions_Nodes_Cast(o, collector) ⇒ Object 



257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 257

def visit_ArelExtensions_Nodes_Cast o, collector
  case o.as_attr
  when :string
    collector << 'TO_CHAR('
    collector = visit o.left, collector
    collector << ')'
    return collector
  when :text
    collector << 'TO_CLOB('
    collector = visit o.left, collector
    collector << ')'
    return collector
  when :ntext
    collector << 'TO_NCLOB('
    collector = visit o.left, collector
    collector << ')'
    return collector
  when :time
    if (o.left.respond_to?(:return_type) && o.left.return_type == :string) || o.left.is_a?(Arel::Nodes::Quoted)
      collector << 'TO_DATE('
      collector = visit o.left, collector
      collector << ",'HH24:MI:SS')"
    else
      collector << 'TO_DATE(TO_CHAR('
      collector = visit o.left, collector
      collector << ",'HH24:MI:SS'),'HH24:MI:SS')"
    end
    return collector
  when :number, :decimal
    collector << 'TO_NUMBER('
    collector = visit o.left, collector
    collector << ')'
    return collector
  when :datetime
    as_attr = Arel::Nodes::SqlLiteral.new('timestamp')
  when :date
    if (o.left.respond_to?(:return_type) && o.left.return_type == :string) || o.left.is_a?(Arel::Nodes::Quoted)
      collector << 'TO_DATE('
      collector = visit o.left, collector
      collector << ",'YYYY-MM-DD')"
    else
      collector << 'TO_DATE(TO_CHAR('
      collector = visit o.left, collector
      collector << ",'YYYY-MM-DD'),'YYYY-MM-DD')"
    end
    return collector
  when :binary
    as_attr = Arel::Nodes::SqlLiteral.new('binary')
  else
    as_attr = Arel::Nodes::SqlLiteral.new(o.as_attr.to_s)
  end
  collector << 'CAST('
  collector = visit o.left, collector
  collector << ' AS '
  collector = visit as_attr, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Coalesce(o, collector) ⇒ Object 



157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 157

def visit_ArelExtensions_Nodes_Coalesce o, collector
  collector << 'COALESCE('
  o.expressions.each_with_index { |arg, i|
    collector << COMMA if i != 0
    if i > 0 && o.left_node_type == :text
      if arg == '' || (arg.is_a?(Arel::Nodes::Quoted) && (arg.expr == ''))
        collector << 'NULL'
      else
        collector << 'TO_CLOB('
        collector = visit arg, collector
        collector << ')'
      end
    else
      collector = visit arg, collector
    end
  }
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Collate(o, collector) ⇒ Object 



110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 110

def visit_ArelExtensions_Nodes_Collate o, collector
  if o.ai
    collector << 'NLSSORT('
    collector = visit o.expressions.first, collector
    collector << COMMA
    collector << "'NLS_SORT = BINARY_AI NLS_COMP = LINGUISTIC'"
    collector << ')'
  elsif o.ci
    collector << 'NLSSORT('
    collector = visit o.expressions.first, collector
    collector << COMMA
    collector << "'NLS_SORT = BINARY_CI NLS_COMP = LINGUISTIC'"
    collector << ')'
  else
    collector = visit o.expressions.first, collector
  end
collector
end

#visit_ArelExtensions_Nodes_Concat(o, collector) ⇒ Object 



36
37
38
39
40
41
42
43
44
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 36

def visit_ArelExtensions_Nodes_Concat o, collector
  collector << '('
  o.expressions.each_with_index { |arg, i|
    collector = visit o.convert_to_string_node(arg), collector
    collector << ' || ' unless i == o.expressions.length - 1
  }
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_DateAdd(o, collector) ⇒ Object 



444
445
446
447
448
449
450
451
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 444

def visit_ArelExtensions_Nodes_DateAdd o, collector
  collector << '('
  collector = visit o.left, collector
  collector << ' + ' # (o.right.value >= 0 ? ' + ' : ' - ')
  collector = visit o.oracle_value(o.right), collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_DateDiff(o, collector) ⇒ Object

:date is not possible in Oracle since this type does not really exist



185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 185

def visit_ArelExtensions_Nodes_DateDiff o, collector
  lc = o.left_node_type == :ruby_date || o.left_node_type == :ruby_time
  rc = o.right_node_type == :ruby_date || o.right_node_type == :ruby_time
  if rc || o.right_node_type == :date || o.right_node_type == :datetime || o.right_node_type == :time
    collector << '('
    collector << 'TO_DATE(' if lc
    collector = visit o.left, collector
    collector << ')' if lc
    collector << ' - '
    collector << 'TO_DATE(' if rc
    collector = visit o.right, collector
    collector << ')' if rc
    collector << ')'
    if (o.left_node_type == :ruby_time || o.left_node_type == :datetime || o.left_node_type == :time)
      collector << ' * (CASE WHEN (TRUNC('
      collector << 'TO_DATE(' if lc
      collector = visit o.left, collector
      collector << ')' if lc
      collector << COMMA
      collector << "'DDD') = "
      collector << 'TO_DATE(' if lc
      collector = visit o.left, collector
      collector << ')' if lc
      collector << ') THEN 1 ELSE 86400 END)' # converts to seconds
    end
  else
    collector << '('
    collector = visit o.left, collector
    collector << ' - ('
    if o.right.is_a?(ArelExtensions::Nodes::Duration)
      o.right.with_interval = true
    end
    collector = visit o.right, collector
    collector << '))'
    collector
  end
  collector
end

#visit_ArelExtensions_Nodes_Duration(o, collector) ⇒ Object 



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
250
251
252
253
254
255
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 224

def visit_ArelExtensions_Nodes_Duration o, collector
  case o.left
  when 'wd', 'w'
    collector << 'TO_CHAR('
    collector = visit o.right, collector
    collector << COMMA
    collector = visit Arel.quoted(DATE_MAPPING[o.left]), collector
  else
    right = case o.left
    when  'd', 'm', 'y'
      interval = 'DAY'
      o.right.cast(:date)
    when 'h', 'mn', 's'
      interval = 'SECOND'
      o.right.cast(:datetime)
    when /i\z/
      interval = DATE_MAPPING[o.left[0..-2]]
      collector << '('
      collector = visit o.right, collector
      collector << ") * (INTERVAL '1' #{interval})"
      return collector
    else
      interval = nil
      o.right
    end
    collector << "EXTRACT(#{DATE_MAPPING[o.left]} FROM "
    collector = visit right, collector
  end
  collector << ')'
  collector << " * (INTERVAL '1' #{interval})" if interval && o.with_interval
  collector
end

#visit_ArelExtensions_Nodes_Format(o, collector) ⇒ Object 



453
454
455
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 453

def visit_ArelExtensions_Nodes_Format o, collector
  visit_ArelExtensions_Nodes_FormattedDate o, collector
end

#visit_ArelExtensions_Nodes_FormattedDate(o, collector) ⇒ Object 



457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 457

def visit_ArelExtensions_Nodes_FormattedDate o, collector
  fmt = ArelExtensions::Visitors::strftime_to_format(o.iso_format, DATE_FORMAT_DIRECTIVES)
  collector << 'TO_CHAR('
  collector << 'CAST(' if o.time_zone
  collector = visit o.left, collector
  case o.time_zone
  when Hash
    src_tz, dst_tz = o.time_zone.first
    collector << ' as timestamp) at time zone '
    collector = visit Arel.quoted(src_tz), collector
    collector < ' at time zone '
    collector = visit Arel.quoted(dst_tz), collector
  when String
    collector << ' as timestamp) at time zone '
    collector = visit Arel.quoted(o.time_zone), collector
  end
  collector << COMMA
  collector = visit Arel.quoted(fmt), collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_FormattedNumber(o, collector) ⇒ Object 



633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 633

def visit_ArelExtensions_Nodes_FormattedNumber o, collector
  col = o.left.coalesce(0)
  comma = NUMBER_COMMA_MAPPING[o.locale] || '.,'
  comma_in_format = o.precision == 0 ? '' : 'D'
  nines_after = (1..o.precision - 1).map{'9'}.join('') + '0'
  if comma.length == 1
    options = Arel.quoted("NLS_NUMERIC_CHARACTERS = '#{comma} '")
    nines_before = ('999' * 4 + '990')
  else
    options = Arel.quoted("NLS_NUMERIC_CHARACTERS = '#{comma}'")
    nines_before = ('999G' * 4 + '990')
  end
  sign = Arel.when(col < 0).
            then('-').
            else(o.flags.include?('+') ? '+' : (o.flags.include?(' ') ? ' ' : ''))
  sign_length = o.flags.include?('+') || o.flags.include?(' ') ?
          Arel.quoted(1) :
          Arel.when(col < 0).then(1).else(0)

  if o.scientific_notation
    number = Arel::Nodes::NamedFunction.new('TO_CHAR', [
          Arel.quoted(col.abs),
          Arel.quoted("FM#{nines_before}#{comma_in_format}#{nines_after}EEEE"),
          options
        ])
    if o.type == 'e'
      number = number.replace('E', 'e')
    end
  else
    number = Arel::Nodes::NamedFunction.new('TO_CHAR', [
          Arel.quoted(col.abs),
          Arel.quoted("FM#{nines_before}#{comma_in_format}#{nines_after}"),
          options
        ])
  end

  repeated_char =
    if o.width == 0
      Arel.quoted('')
    else
      Arel
        .when(Arel.quoted(o.width).abs - (number.length + sign_length) > 0)
        .then(Arel.quoted(
                o.flags.include?('-') ? ' ' : (o.flags.include?('0') ? '0' : ' ')
              ).repeat(Arel.quoted(o.width).abs - (number.length + sign_length))
             )
        .else('')
    end
  before = !o.flags.include?('0') && !o.flags.include?('-') ? repeated_char : ''
  middle = o.flags.include?('0') && !o.flags.include?('-')  ? repeated_char : ''
  after  = o.flags.include?('-') ? repeated_char : ''
  full_number = ArelExtensions::Nodes::Concat.new([
      before,
      sign,
      middle,
      number,
      after
    ])
  collector = visit ArelExtensions::Nodes::Concat.new([Arel.quoted(o.prefix), full_number, Arel.quoted(o.suffix)]), collector
  collector
end

#visit_ArelExtensions_Nodes_GroupConcat(o, collector) ⇒ Object 



134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 134

def visit_ArelExtensions_Nodes_GroupConcat o, collector
  collector << '(LISTAGG('
  collector = visit o.left, collector
  collector << COMMA
  collector =
    if o.separator && o.separator != 'NULL'
      visit o.separator, collector
    else
      visit Arel.quoted(','), collector
    end
  collector << ') WITHIN GROUP (ORDER BY '
  if !o.order.blank?
    o.order.each_with_index do |order, i|
      collector << COMMA if i != 0
      collector = visit order, collector
    end
  else
    collector = visit o.left, collector
  end
  collector << '))'
  collector
end

#visit_ArelExtensions_Nodes_IDoesNotMatch(o, collector) ⇒ Object 



96
97
98
99
100
101
102
103
104
105
106
107
108
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 96

def visit_ArelExtensions_Nodes_IDoesNotMatch o, collector
  collector << 'LOWER('
  collector = visit o.left, collector
  collector << ') NOT LIKE LOWER('
  collector = visit o.right, collector
  collector << ')'
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_IMatches(o, collector) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
56
57
58
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 46

def visit_ArelExtensions_Nodes_IMatches o, collector
  collector << 'LOWER('
  collector = visit o.left, collector
  collector << ') LIKE LOWER('
  collector = visit o.right, collector
  collector << ')'
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_IsNotNull(o, collector) ⇒ Object 



329
330
331
332
333
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 329

def visit_ArelExtensions_Nodes_IsNotNull o, collector
  collector = visit o.expr, collector
  collector << ' IS NOT NULL'
  collector
end

#visit_ArelExtensions_Nodes_IsNull(o, collector) ⇒ Object 



323
324
325
326
327
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 323

def visit_ArelExtensions_Nodes_IsNull o, collector
  collector = visit o.expr, collector
  collector << ' IS NULL'
  collector
end

#visit_ArelExtensions_Nodes_Length(o, collector) ⇒ Object 



316
317
318
319
320
321
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 316

def visit_ArelExtensions_Nodes_Length o, collector
  collector << "LENGTH#{o.bytewise ? 'B' : ''}("
  collector = visit o.expr, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_LevenshteinDistance(o, collector) ⇒ Object 



709
710
711
712
713
714
715
716
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 709

def visit_ArelExtensions_Nodes_LevenshteinDistance o, collector
  collector << 'UTL_MATCH.edit_distance('
  collector = visit o.left, collector
  collector << Arel::Visitors::ToSql::COMMA
  collector = visit o.right, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Locate(o, collector) ⇒ Object 



364
365
366
367
368
369
370
371
372
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 364

def visit_ArelExtensions_Nodes_Locate o, collector
  collector << 'INSTR('
  o.expressions.each_with_index { |arg, i|
    collector << COMMA if i != 0
    collector = visit arg, collector
  }
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Log10(o, collector) ⇒ Object 



16
17
18
19
20
21
22
23
24
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 16

def visit_ArelExtensions_Nodes_Log10 o, collector
  collector << 'LOG('
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::ToSql::COMMA if i != 0
    collector = visit arg, collector
  }
  collector << ',10)'
  collector
end

#visit_ArelExtensions_Nodes_Ltrim(o, collector) ⇒ Object 



410
411
412
413
414
415
416
417
418
419
420
421
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 410

def visit_ArelExtensions_Nodes_Ltrim o, collector
  collector << 'TRIM(LEADING '
  if o.right.expr && SPECIAL_CHARS[o.right.expr]
    collector << SPECIAL_CHARS[o.right.expr]
  else
    collector = visit o.right, collector
  end
  collector << ' FROM '
  collector = visit o.left, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_MD5(o, collector) ⇒ Object 



177
178
179
180
181
182
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 177

def visit_ArelExtensions_Nodes_MD5 o, collector
  collector << 'LOWER (RAWTOHEX (DBMS_OBFUSCATION_TOOLKIT.md5(input => UTL_I18N.STRING_TO_RAW('
  collector = visit o.left, collector
  collector << ", 'AL32UTF8'))))"
  collector
end

#visit_ArelExtensions_Nodes_NotBlank(o, collector) ⇒ Object 



440
441
442
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 440

def visit_ArelExtensions_Nodes_NotBlank o, collector
  visit o.expr.trim.length.coalesce(0).gt(0), collector
end

#visit_ArelExtensions_Nodes_Power(o, collector) ⇒ Object 



26
27
28
29
30
31
32
33
34
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 26

def visit_ArelExtensions_Nodes_Power o, collector
  collector << 'POWER('
  o.expressions.each_with_index { |arg, i|
    collector << Arel::Visitors::ToSql::COMMA if i != 0
    collector = visit arg, collector
  }
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Rand(o, collector) ⇒ Object 



335
336
337
338
339
340
341
342
343
344
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 335

def visit_ArelExtensions_Nodes_Rand o, collector
  collector << 'DBMS_RANDOM.VALUE('
  if o.left && o.right
    collector = visit o.left, collector
    collector << COMMA
    collector = visit o.right, collector
  end
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Repeat(o, collector) ⇒ Object 



479
480
481
482
483
484
485
486
487
488
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 479

def visit_ArelExtensions_Nodes_Repeat o, collector
  collector << 'LPAD('
  collector = visit o.expressions[0], collector # can't put empty string, otherwise it wouldn't work
  collector << Arel::Visitors::ToSql::COMMA
  collector = visit o.expressions[1], collector
  collector << Arel::Visitors::ToSql::COMMA
  collector = visit o.expressions[0], collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Rtrim(o, collector) ⇒ Object 



423
424
425
426
427
428
429
430
431
432
433
434
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 423

def visit_ArelExtensions_Nodes_Rtrim o, collector
  collector << 'TRIM(TRAILING '
  if o.right.expr && SPECIAL_CHARS[o.right.expr]
    collector << SPECIAL_CHARS[o.right.expr]
  else
    collector = visit o.right, collector
  end
  collector << ' FROM '
  collector = visit o.left, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_SMatches(o, collector) ⇒ Object 



84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 84

def visit_ArelExtensions_Nodes_SMatches o, collector
  collector = visit o.left, collector
  collector << ' LIKE '
  collector = visit o.right, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end

#visit_ArelExtensions_Nodes_Std(o, collector) ⇒ Object 



695
696
697
698
699
700
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 695

def visit_ArelExtensions_Nodes_Std o, collector
  collector << (o.unbiased_estimator ? 'STDDEV_SAMP(' : 'STDDEV_POP(')
  visit o.left, collector
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Substring(o, collector) ⇒ Object 



374
375
376
377
378
379
380
381
382
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 374

def visit_ArelExtensions_Nodes_Substring o, collector
  collector << 'SUBSTR('
  o.expressions.each_with_index { |arg, i|
    collector << COMMA if i != 0
    collector = visit arg, collector
  }
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Trim(o, collector) ⇒ Object 



384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 384

def visit_ArelExtensions_Nodes_Trim o, collector
  collector << 'TRIM(' # BOTH
  if o.right.expr && SPECIAL_CHARS[o.right.expr]
    collector << SPECIAL_CHARS[o.right.expr]
  else
    collector = visit o.right, collector
  end
  collector << ' FROM '
  collector << '(' if o.left.is_a? ArelExtensions::Nodes::Trim
  if o.type_of_attribute(o.left) == :text
    collector << 'dbms_lob.SUBSTR('
    collector = visit o.left, collector
    collector << COMMA
    collector << 'COALESCE(dbms_lob.GETLENGTH('
    collector = visit o.left, collector
    collector << '), 0)'
    collector << COMMA
    collector << '1)'
  else
    collector = visit o.left, collector
  end
  collector << ')' if o.left.is_a? ArelExtensions::Nodes::Trim
  collector << ')'
  collector
end

#visit_ArelExtensions_Nodes_Variance(o, collector) ⇒ Object 



702
703
704
705
706
707
 
# File 'lib/arel_extensions/visitors/oracle.rb', line 702

def visit_ArelExtensions_Nodes_Variance o, collector
  collector << (o.unbiased_estimator ? 'VAR_SAMP(' : 'VAR_POP(')
  visit o.left, collector
  collector << ')'
  collector
end