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Dates are able to be natively handled by the mysql2 gem. libmysql (and
the wire protocol) represent each portion of the date as an integer,
which is significantly faster to encode and decode. By passing the Ruby
date objects through directly, we can save a good bit of time and
memory.
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Abstract boolean serialization has been using 't' and 'f', with MySQL
overriding that to use 1 and 0.
This has the advantage that SQLite natively recognizes 1 and 0 as true
and false, but does not natively recognize 't' and 'f'.
This change in serialization requires a migration of stored boolean data
for SQLite databases, so it's implemented behind a configuration flag
whose default false value is deprecated. The flag itself can be
deprecated in a future version of Rails. While loaded models will give
the correct result for boolean columns without migrating old data,
where() clauses will interact incorrectly with old data.
While working in this area, also change the abstract adapter to use
`"TRUE"` and `"FALSE"` as quoted values and `true` and `false` for
unquoted. These are supported by PostreSQL, and MySQL remains
overriden.
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This reverts commit 3420a14590c0e6915d8b6c242887f74adb4120f9, reversing
changes made to afb66a5a598ce4ac74ad84b125a5abf046dcf5aa.
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```
% ARCONN=sqlite3 be ruby -w -Itest test/cases/quoting_test.rb
test/cases/quoting_test.rb:92: warning: ambiguous first argument; put parentheses or a space even after `/' operator
test/cases/quoting_test.rb:96: warning: ambiguous first argument; put parentheses or a space even after `/' operator
Using sqlite3
Run options: --seed 9495
.....................................
Finished in 0.046403s, 797.3622 runs/s, 1120.6172 assertions/s.
37 runs, 52 assertions, 0 failures, 0 errors, 0 skips
```
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In this case, it's the method definition that's more at fault, rather
than the current caller.
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Originally `quoted_id` was used in legacy quoting mechanism. Now we use
type casting mechanism for that. Let's deprecate `quoted_id`.
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Passing `FakeColumn` was removed at #15336 therefore
`test_string_with_crazy_column` is duplicated with
`test_quote_string_no_column`.
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The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.
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If reuse `QUOTED_TRUE` and `QUOTED_FALSE` without frozen, causing the
following issue.
```
Loading development environment (Rails 5.1.0.alpha)
irb(main):001:0> ActiveRecord::Base.connection.quote(true) << ' foo'
=> "1 foo"
irb(main):002:0> ActiveRecord::Base.connection.quote(true) << ' foo'
=> "1 foo foo"
irb(main):003:0> type = ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::MysqlString.new
=> #<ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::MysqlString:0x007fd40c15e018 @precision=nil, @scale=nil, @limit=nil>
irb(main):004:0> type.serialize(true) << ' bar'
=> "1 foo foo bar"
irb(main):005:0> type.cast(true) << ' bar'
=> "1 foo foo bar bar"
```
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Ruby 2.4 unifies Fixnum and Bignum into Integer: https://bugs.ruby-lang.org/issues/12005
* Forward compat with new unified Integer class in Ruby 2.4+.
* Backward compat with separate Fixnum/Bignum in Ruby 2.2 & 2.3.
* Drops needless Fixnum distinction in docs, preferring Integer.
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The various databases don't actually need significantly different
handling for this behavior, and they can achieve it without knowing
about the type of the object.
The old implementation was returning a string, which will cause problems
such as breaking TZ aware attributes, and making it impossible for the
adapters to supply their logic for time objects.
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This behavior exists only to support fixtures, so we should handle it
there. Leaving it in `#quote` can cause very subtle bugs to slip
through, by things appearing to work when they should be blowing up
loudly, such as #18385.
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The only case where we got a column that was not `nil`, but did not
respond to `cast_type` was when type casting the default value during
schema creation. We can look up the cast type, and add that object to
the column definition. Will allow us to consistently rely on the type
objects for type casting in all directions.
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We're never going to be able to use the attribute object here, however,
so let's just accept the ugly demeter violation here for now.
Remove test cases which were either redundant with other tests in the
file, or were actually testing the type objects (which are tested
elsewhere)
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The intention is to eventually remove `column` from the arguments list
both for `quote` and for `type_cast` entirely. This is the first step
to that end.
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This reverts commit 408227d9c5ed7de26310d72a1a99c1ee02311c63, reversing
changes made to dca0b57d03deffc933763482e615c3cf0b9a1d97.
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This patch fixes quoting for ActiveSupport::Duration instances:
# before
>> ActiveRecord::Base.connection.quote 30.minutes
=> "'--- 1800\n...\n'"
# after
>> ActiveRecord::Base.connection.quote 30.minutes
=> "1800"
Also, adds a test for type casting ActiveSupport::Duration instances.
Related to #1119.
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RUNNING_UNIT_TESTS file for details, but essentially you can now configure things in test/config.yml. You can also run tests directly via the command line, e.g. ruby path/to/test.rb (no rake needed, uses default db connection from test/config.yml). This will help us fix the CI by enabling us to isolate the different Rails versions to different databases.
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