git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@249 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Fixed that nested transactions now work by letting the outer most transaction have the responsibilty of starting and rolling back the transaction. If any of the inner transactions swallow the exception raised, though, the transaction will not be rolled back. So always let the transaction bubble up even when you've dealt with local issues. Closes #231 and #340.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@242 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Changed the interface on AbstractAdapter to require that adapters return the number of affected rows on delete and update operations. Added that Base.update_all and Base.delete_all return an integer of the number of affected rows #341

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Added Base.validate_uniqueness thatv alidates whether the value of the specified attributes are unique across the system. Useful for making sure that only one user can be named "davidhh".

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Fixed value quoting in all generated SQL statements, so that integers are not surrounded in quotes and that all sanitation are happening through the database's own quoting routine. This should hopefully make it lots easier for new adapters that doesn't accept '1' for integer columns.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@70 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Added proper handling of time fields that are turned into Time objects with the dummy date of 2000/1/1 [HariSeldon]

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symbolize_strings_in_hash shouldnt change receiver -- this should fix the bug with dump_schema in the rakefile

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@17 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Added option to establish_connection where you'll be able to leave out the parameter to have it use the RAILS_ENV environment variable

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4 5ecf4fe2-1ee6-0310-87b1-e25e094e27de