- Add connection checkin and checkout callbacks to adapter to allow
  adapter-specific customization of behavior (e.g., JRuby w/ JNDI)

- delegating methods left behind

So far so good, tests still run clean. Next steps: synchronize connection pool access
and modification, and change allow_concurrency to simply switch a real lock for a
null lock.

Patch originally from http://dev.rubyonrails.org/ticket/5470

Signed-off-by: NJoshua Peek <josh@joshpeek.com>

Move the transaction counter to the connection object rather than maintaining it on the current Thread.
Signed-off-by: NMichael Koziarski <michael@koziarski.com>
[#533 state:resolved]

commit e6afd8b2
Author: Xavier Noria <fxn@hashref.com>
Date:   Thu May 8 23:49:36 2008 +0200

    Overall documentation improvement and markup corrections. Zillion changes.

commit 2fead68b
Author: Austin Putman <austin@emmanuel.local>
Date:   Wed May 7 19:35:46 2008 -0700

    Documented class methods on ActionController::Routing.  These are dangerous, and mostly used for testing.

commit f5b84182
Author: Teflon Ted <github@rudiment.net>
Date:   Wed May 7 16:08:49 2008 -0400

    Added explanation about errant inflections not being patched in the future in order to avoid breaking legacy applications.

commit 370f4f51
Author: Sunny Ripert <negatif@gmail.com>
Date:   Wed May 7 14:00:59 2008 +0200

    Applied list conventions in AR::Base

commit 5bd18429
Author: Sunny Ripert <negatif@gmail.com>
Date:   Wed May 7 13:53:35 2008 +0200

    Renamed Options list to Attributes list whenever they weren't option hashes in AR::Base

commit d912bd56
Author: Yaroslav Markin <yaroslav@markin.net>
Date:   Wed May 7 13:50:28 2008 +0400

    Add a filter_parameter_logging usage hint to generated ApplicationController.
    This may help to remind the developer to filter sensitive information from application logs.
    Closes #11578

commit b243de0d
Author: Jack Danger Canty <git@6brand.com>
Date:   Tue May 6 23:39:47 2008 -0700

    doc: disambiguating an example ActiveRecord class

commit f81d771f
Author: Jack Danger Canty <git@6brand.com>
Date:   Tue May 6 23:35:05 2008 -0700

    doc: ActiveRecord::Reflection::AssociationReflection#through_reflection

    Added documentation demonstrating the use of #through_reflection for
    finding intervening reflection objects for HasManyThrough
    and HasOneThrough.

commit ae6b46f0
Author: Cheah Chu Yeow <chuyeow@gmail.com>
Date:   Wed May 7 13:47:41 2008 +0800

    Document AttributeAssignmentError and MultiparameterAssignmentErrors.

commit 8f463550
Author: John Barnette <jbarnette@gmail.com>
Date:   Tue May 6 22:46:44 2008 -0700

    Killing/fixing a bunch of outdated language in the AR README.

commit aca44bcd
Author: Cheah Chu Yeow <chuyeow@gmail.com>
Date:   Wed May 7 13:34:52 2008 +0800

    Make a note about ActiveResource::Timeouterror being raised when ARes calls timeout.

commit 284a930a
Author: Jonathan Dance <jd@wuputah.com>
Date:   Tue May 6 14:58:26 2008 -0400

    improvements to the page caching docs

commit 9482da62
Author: Sunny Ripert <negatif@gmail.com>
Date:   Mon May 5 18:13:40 2008 +0200

    validates_numericality_of() "integer" option really is "only_integer"

commit e9afd679
Author: Sunny Ripert <negatif@gmail.com>
Date:   Mon May 5 12:11:59 2008 +0200

    Harmonized hash notation in AR::Base

commit 67ebf14a
Author: Sunny Ripert <negatif@gmail.com>
Date:   Mon May 5 12:06:19 2008 +0200

    Turned options into rdoc-lists in AR::Base

commit 0ec7c0a4
Author: Marshall Huss <mwhuss@Macbook.local>
Date:   Sun May 4 23:21:33 2008 -0400

    Added information of how to set element_name in the case the user has a name confliction with an existing model
Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

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Replace the elaborate reloading connection checking scheme, just fix the Ruby-based MySQL adapter, ye?

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5656 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Only reload connections in development mode that supports (and requires that) -- in other words, only do it for SQLite (closes #6687, #6700) [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5637 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

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automatically add primary key to #select_limited_ids_list order by clause for databases that require order columns in the distinct statements (postgresql) [Rick]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5292 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

 decimal
 r4705@asus:  jeremy | 2006-06-27 12:20:47 -0700
 current_adapter? checks whether any of its arguments is the name of the current adapter class
 r4834@asus:  jeremy | 2006-07-08 13:08:24 -0700
 Room to float.
 r4835@asus:  jeremy | 2006-07-08 13:09:18 -0700
 Give lock test a few chances.
 r4836@asus:  jeremy | 2006-07-08 13:12:05 -0700
 Numeric and decimal columns map to BigDecimal instead of Float. Those with scale 0 map to Integer. Closes #5454.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4596 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Provide access to the underlying database connection with Adapter#raw_connection, allows the use of db-specific methods such as postgresql's lo_* . Closes #2090


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ActiveRecord::Base.remove_connection explicitly closes database connections and doesn't corrupt the connection cache. Introducing the disconnect! instance method for the PostgreSQL, MySQL, and SQL Server adapters; implementations for the others are welcome. References #3591.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3674 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

* Introduce Unit Tests for pagination
* Allow count to work with :include by using count distinct.

[Kevin Clark & Jeremy Hopple]


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Connection cache to speed up retrieve_connection and get rid of dirty connection marking.  References #428.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3218 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

 Mark connections for verification.  Retrieve connection verifies before returning a connection.  Verification tests whether the connection is marked then reconnects if the connection is inactive.  All active connections are marked for verification after a request is handled.  References #428.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3096 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

 correct prefetch_primary_key? table_name param


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3053 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

 Ticket #1874 - Firebird adapter
 r3107@asus:  jeremy | 2005-11-16 00:06:14 -0800
 quote column aliases
 r3108@asus:  jeremy | 2005-11-16 00:08:12 -0800
 quote columns in construct_conditions_from_arguments.  update sequence_name docs.  introduce prefetched primary keys.
 r3109@asus:  jeremy | 2005-11-16 00:09:08 -0800
 double-quote rather than single-quote sqlite columns
 r3110@asus:  jeremy | 2005-11-16 00:09:56 -0800
 quote column names and use attribute_condition in validates_uniqueness_of
 r3111@asus:  jeremy | 2005-11-16 00:12:24 -0800
 Use QUOTED_TYPE constant in tests
 r3112@asus:  jeremy | 2005-11-16 00:13:28 -0800
 restrict test_inserts_with_pre_and_suffix to those adapters which support migrations
 r3113@asus:  jeremy | 2005-11-16 00:14:09 -0800
 Use QUOTED_TYPE constant in tests
 r3114@asus:  jeremy | 2005-11-16 00:14:30 -0800
 Use QUOTED_TYPE constant in tests


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 AbstractAdapter#reconnect_if_inactive! returns boolean success.  AbstractAdapter#log alters exception message on reconnect failure rather than raising ConnectionFailed.


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 MySQL active? and reconnect!  References #428.
 r3043@asus:  jeremy | 2005-11-13 01:58:28 -0800
 SQLite active? and reconnect!  References #428.
 r3044@asus:  jeremy | 2005-11-13 02:02:27 -0800
 Update CHANGELOG with admonishment regarding avoidance of the log method.


git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3001 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

 Ticket 428 - stale connections
 r3040@asus:  jeremy | 2005-11-13 00:22:29 -0800
 When AbstractAdapter#log rescues an exception, attempt to detect and reconnect to an inactive database connection.  Connection adapter must respond to the active? and reconnect! instance methods.  Initial support for PostgreSQL.  References #428.


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