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MySQL: more robust test for nullified result hashes. References #3124.

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git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3246 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
This commit is contained in:
Jeremy Kemper 2005-12-08 05:07:45 +00:00
parent df901ce345
commit cf54a71352
2 changed files with 4 additions and 8 deletions
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2
activerecord/CHANGELOG
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@ -1,5 +1,7 @@
*SVN*
* MySQL: more robust test for nullified result hashes. #3124 [Stefan Kaes]
* SQLite: find database file when RAILS_ROOT is a symlink. #3116 [anna@wota.jp]
* Reloading an instance refreshes its aggregations as well as its associations. #3024 [François Beausolei]

10
activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
View file

@ -8,14 +8,10 @@ module ActiveRecord
unless defined? Mysql
begin
require_library_or_gem 'mysql'
# The C version of mysql returns null fields in each_hash if Mysql::VERSION is defined
ConnectionAdapters::MysqlAdapter.null_values_in_each_hash = Mysql.const_defined?(:VERSION)
rescue LoadError => cannot_require_mysql
# Only use the supplied backup Ruby/MySQL driver if no driver is already in place
begin
require 'active_record/vendor/mysql'
# The ruby version of mysql returns null fields in each_hash
ConnectionAdapters::MysqlAdapter.null_values_in_each_hash = true
rescue LoadError
raise cannot_require_mysql
end
@ -77,9 +73,6 @@ module ActiveRecord
@@emulate_booleans = true
cattr_accessor :emulate_booleans
cattr_accessor :null_values_in_each_hash
@@null_values_in_each_hash = false
LOST_CONNECTION_ERROR_MESSAGES = [
"Server shutdown in progress",
"Broken pipe",
@ -90,6 +83,7 @@ module ActiveRecord
def initialize(connection, logger, connection_options=nil, config={})
super(connection, logger)
@connection_options = connection_options
@null_values_in_each_hash = Mysql.const_defined?(:VERSION)
@config = config
connect
end
@ -332,7 +326,7 @@ module ActiveRecord
@connection.query_with_result = true
result = execute(sql, name)
rows = []
if @@null_values_in_each_hash
if @null_values_in_each_hash
result.each_hash { |row| rows << row }
else
all_fields = result.fetch_fields.inject({}) { |fields, f| fields[f.name] = nil; fields }