-
Notifications
You must be signed in to change notification settings - Fork 557
/
sqlserver_adapter.rb
408 lines (345 loc) · 14 KB
/
sqlserver_adapter.rb
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
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
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
250
251
252
253
254
255
256
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
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
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
require 'base64'
require 'active_record'
require 'arel_sqlserver'
require 'active_record/connection_adapters/abstract_adapter'
require 'active_record/connection_adapters/sqlserver/core_ext/active_record'
require 'active_record/connection_adapters/sqlserver/core_ext/explain'
require 'active_record/connection_adapters/sqlserver/core_ext/explain_subscriber'
require 'active_record/connection_adapters/sqlserver/core_ext/attribute_methods'
require 'active_record/connection_adapters/sqlserver/version'
require 'active_record/connection_adapters/sqlserver/type'
require 'active_record/connection_adapters/sqlserver/database_limits'
require 'active_record/connection_adapters/sqlserver/database_statements'
require 'active_record/connection_adapters/sqlserver/database_tasks'
require 'active_record/connection_adapters/sqlserver/transaction'
require 'active_record/connection_adapters/sqlserver/errors'
require 'active_record/connection_adapters/sqlserver/schema_creation'
require 'active_record/connection_adapters/sqlserver/schema_statements'
require 'active_record/connection_adapters/sqlserver/sql_type_metadata'
require 'active_record/connection_adapters/sqlserver/showplan'
require 'active_record/connection_adapters/sqlserver/table_definition'
require 'active_record/connection_adapters/sqlserver/quoting'
require 'active_record/connection_adapters/sqlserver/utils'
require 'active_record/sqlserver_base'
require 'active_record/connection_adapters/sqlserver_column'
require 'active_record/tasks/sqlserver_database_tasks'
module ActiveRecord
module ConnectionAdapters
class SQLServerAdapter < AbstractAdapter
include SQLServer::Version,
SQLServer::Quoting,
SQLServer::DatabaseStatements,
SQLServer::Showplan,
SQLServer::SchemaStatements,
SQLServer::DatabaseLimits,
SQLServer::DatabaseTasks
ADAPTER_NAME = 'SQLServer'.freeze
attr_reader :spid
cattr_accessor :cs_equality_operator, instance_accessor: false
cattr_accessor :use_output_inserted, instance_accessor: false
cattr_accessor :showplan_option, instance_accessor: false
cattr_accessor :lowercase_schema_reflection
self.cs_equality_operator = 'COLLATE Latin1_General_CS_AS_WS'
self.use_output_inserted = true
def initialize(connection, logger = nil, config = {})
super(connection, logger, config)
# Our Responsibility
@connection_options = config
connect
initialize_dateformatter
use_database
end
# === Abstract Adapter ========================================== #
def arel_visitor
Arel::Visitors::SQLServer.new self
end
def valid_type?(type)
!native_database_types[type].nil?
end
def schema_creation
SQLServer::SchemaCreation.new self
end
def supports_migrations?
true
end
def supports_primary_key?
true
end
def supports_ddl_transactions?
true
end
def supports_bulk_alter?
false
end
def supports_advisory_locks?
false
end
def supports_index_sort_order?
true
end
def supports_index_sort_order?
false
end
def supports_partial_index?
true
end
def supports_expression_index?
false
end
def supports_explain?
true
end
def supports_transaction_isolation?
true
end
def supports_indexes_in_create?
false
end
def supports_foreign_keys?
true
end
def supports_views?
true
end
def supports_datetime_with_precision?
false
end
def supports_json?
true
end
def supports_comments?
false
end
def supports_comments_in_create?
false
end
def disable_referential_integrity
tables = tables_with_referential_integrity
tables.each { |t| do_execute "ALTER TABLE #{t} NOCHECK CONSTRAINT ALL" }
yield
ensure
tables.each { |t| do_execute "ALTER TABLE #{t} CHECK CONSTRAINT ALL" }
end
# === Abstract Adapter (Connection Management) ================== #
def active?
return false unless @connection
raw_connection_do 'SELECT 1'
true
rescue *connection_errors
false
end
def reconnect!
super
disconnect!
connect
end
def disconnect!
super
@spid = nil
case @connection_options[:mode]
when :dblib
@connection.close rescue nil
end
@connection = nil
end
def reset!
reset_transaction
do_execute 'IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION'
end
# === Abstract Adapter (Misc Support) =========================== #
def tables_with_referential_integrity
schemas_and_tables = select_rows <<-SQL.strip_heredoc
SELECT s.name, o.name
FROM sys.foreign_keys i
INNER JOIN sys.objects o ON i.parent_object_id = o.OBJECT_ID
INNER JOIN sys.schemas s ON o.schema_id = s.schema_id
SQL
schemas_and_tables.map do |schema_table|
schema, table = schema_table
"#{SQLServer::Utils.quoted_raw(schema)}.#{SQLServer::Utils.quoted_raw(table)}"
end
end
def pk_and_sequence_for(table_name)
pk = primary_key(table_name)
pk ? [pk, nil] : nil
end
# === SQLServer Specific (DB Reflection) ======================== #
def sqlserver?
true
end
def sqlserver_azure?
@sqlserver_azure ||= !!(select_value('SELECT @@version', 'SCHEMA') =~ /Azure/i)
end
def database_prefix_remote_server?
return false if database_prefix.blank?
name = SQLServer::Utils.extract_identifiers(database_prefix)
name.fully_qualified? && name.object.blank?
end
def database_prefix
@connection_options[:database_prefix]
end
def version
self.class::VERSION
end
def inspect
"#<#{self.class} version: #{version}, mode: #{@connection_options[:mode]}, azure: #{sqlserver_azure?.inspect}>"
end
def combine_bind_parameters(from_clause: [], join_clause: [], where_clause: [], having_clause: [], limit: nil, offset: nil)
result = from_clause + join_clause + where_clause + having_clause
result << offset if offset
result << limit if limit
result
end
protected
# === Abstract Adapter (Misc Support) =========================== #
def initialize_type_map(m)
m.register_type %r{.*}, SQLServer::Type::UnicodeString.new
# Exact Numerics
register_class_with_limit m, 'bigint(8)', SQLServer::Type::BigInteger
m.alias_type 'bigint', 'bigint(8)'
register_class_with_limit m, 'int(4)', SQLServer::Type::Integer
m.alias_type 'integer', 'int(4)'
m.alias_type 'int', 'int(4)'
register_class_with_limit m, 'smallint(2)', SQLServer::Type::SmallInteger
m.alias_type 'smallint', 'smallint(2)'
register_class_with_limit m, 'tinyint(1)', SQLServer::Type::TinyInteger
m.alias_type 'tinyint', 'tinyint(1)'
m.register_type 'bit', SQLServer::Type::Boolean.new
m.register_type %r{\Adecimal}i do |sql_type|
scale = extract_scale(sql_type)
precision = extract_precision(sql_type)
SQLServer::Type::Decimal.new precision: precision, scale: scale
end
m.alias_type %r{\Anumeric}i, 'decimal'
m.register_type 'money', SQLServer::Type::Money.new
m.register_type 'smallmoney', SQLServer::Type::SmallMoney.new
# Approximate Numerics
m.register_type 'float', SQLServer::Type::Float.new
m.register_type 'real', SQLServer::Type::Real.new
# Date and Time
m.register_type 'date', SQLServer::Type::Date.new
m.register_type 'datetime', SQLServer::Type::DateTime.new
m.register_type %r{\Adatetime2}i do |sql_type|
precision = extract_precision(sql_type)
SQLServer::Type::DateTime2.new precision: precision
end
m.register_type %r{\Adatetimeoffset}i do |sql_type|
precision = extract_precision(sql_type)
SQLServer::Type::DateTimeOffset.new precision: precision
end
m.register_type 'smalldatetime', SQLServer::Type::SmallDateTime.new
m.register_type %r{\Atime}i do |sql_type|
scale = extract_scale(sql_type)
precision = extract_precision(sql_type)
SQLServer::Type::Time.new precision: precision
end
# Character Strings
register_class_with_limit m, %r{\Achar}i, SQLServer::Type::Char
register_class_with_limit m, %r{\Avarchar}i, SQLServer::Type::Varchar
m.register_type 'varchar(max)', SQLServer::Type::VarcharMax.new
m.register_type 'text', SQLServer::Type::Text.new
# Unicode Character Strings
register_class_with_limit m, %r{\Anchar}i, SQLServer::Type::UnicodeChar
register_class_with_limit m, %r{\Anvarchar}i, SQLServer::Type::UnicodeVarchar
m.alias_type 'string', 'nvarchar(4000)'
m.register_type 'nvarchar(max)', SQLServer::Type::UnicodeVarcharMax.new
m.register_type 'ntext', SQLServer::Type::UnicodeText.new
# Binary Strings
register_class_with_limit m, %r{\Abinary}i, SQLServer::Type::Binary
register_class_with_limit m, %r{\Avarbinary}i, SQLServer::Type::Varbinary
m.register_type 'varbinary(max)', SQLServer::Type::VarbinaryMax.new
# Other Data Types
m.register_type 'uniqueidentifier', SQLServer::Type::Uuid.new
m.register_type 'timestamp', SQLServer::Type::Timestamp.new
end
def translate_exception(e, message)
case message
when /(cannot insert duplicate key .* with unique index) | (violation of unique key constraint)/i
RecordNotUnique.new(message)
when /conflicted with the foreign key constraint/i
InvalidForeignKey.new(message)
when /has been chosen as the deadlock victim/i
DeadlockVictim.new(message)
when /database .* does not exist/i
NoDatabaseError.new(message)
else
super
end
end
# === SQLServer Specific (Connection Management) ================ #
def connect
config = @connection_options
@connection = case config[:mode]
when :dblib
dblib_connect(config)
end
@spid = _raw_select('SELECT @@SPID', fetch: :rows).first.first
configure_connection
end
def connection_errors
@connection_errors ||= [].tap do |errors|
errors << TinyTds::Error if defined?(TinyTds::Error)
end
end
def dblib_connect(config)
TinyTds::Client.new(
dataserver: config[:dataserver],
host: config[:host],
port: config[:port],
username: config[:username],
password: config[:password],
database: config[:database],
tds_version: config[:tds_version],
appname: config_appname(config),
login_timeout: config_login_timeout(config),
timeout: config_timeout(config),
encoding: config_encoding(config),
azure: config[:azure]
).tap do |client|
if config[:azure]
client.execute('SET ANSI_NULLS ON').do
client.execute('SET CURSOR_CLOSE_ON_COMMIT OFF').do
client.execute('SET ANSI_NULL_DFLT_ON ON').do
client.execute('SET IMPLICIT_TRANSACTIONS OFF').do
client.execute('SET ANSI_PADDING ON').do
client.execute('SET QUOTED_IDENTIFIER ON').do
client.execute('SET ANSI_WARNINGS ON').do
else
client.execute('SET ANSI_DEFAULTS ON').do
client.execute('SET CURSOR_CLOSE_ON_COMMIT OFF').do
client.execute('SET IMPLICIT_TRANSACTIONS OFF').do
end
client.execute('SET TEXTSIZE 2147483647').do
client.execute('SET CONCAT_NULL_YIELDS_NULL ON').do
end
end
def config_appname(config)
config[:appname] || configure_application_name || Rails.application.class.name.split('::').first rescue nil
end
def config_login_timeout(config)
config[:login_timeout].present? ? config[:login_timeout].to_i : nil
end
def config_timeout(config)
config[:timeout].present? ? config[:timeout].to_i / 1000 : nil
end
def config_encoding(config)
config[:encoding].present? ? config[:encoding] : nil
end
def configure_connection ; end
def configure_application_name ; end
def initialize_dateformatter
@database_dateformat = user_options_dateformat
a, b, c = @database_dateformat.each_char.to_a
[a, b, c].each { |f| f.upcase! if f == 'y' }
dateformat = "%#{a}-%#{b}-%#{c}"
::Date::DATE_FORMATS[:_sqlserver_dateformat] = dateformat
::Time::DATE_FORMATS[:_sqlserver_dateformat] = dateformat
::Time::DATE_FORMATS[:_sqlserver_time] = '%H:%M:%S'
::Time::DATE_FORMATS[:_sqlserver_datetime] = "#{dateformat} %H:%M:%S"
::Time::DATE_FORMATS[:_sqlserver_datetimeoffset] = lambda { |time|
time.strftime "#{dateformat} %H:%M:%S.%9N #{time.formatted_offset}"
}
end
end
end
end