diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb')
-rw-r--r-- | activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb | 76 |
1 files changed, 48 insertions, 28 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb index a6013f754a..d19bd80576 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb @@ -1,41 +1,51 @@ require 'active_record/connection_adapters/abstract_mysql_adapter' -gem 'mysql2', '~> 0.3.10' +gem 'mysql2', '~> 0.3.13' require 'mysql2' module ActiveRecord - module ConnectionHandling + module ConnectionHandling # :nodoc: # Establishes a connection to the database that's used by all Active Record objects. def mysql2_connection(config) + config = config.symbolize_keys + config[:username] = 'root' if config[:username].nil? if Mysql2::Client.const_defined? :FOUND_ROWS config[:flags] = Mysql2::Client::FOUND_ROWS end - client = Mysql2::Client.new(config.symbolize_keys) + client = Mysql2::Client.new(config) options = [config[:host], config[:username], config[:password], config[:database], config[:port], config[:socket], 0] ConnectionAdapters::Mysql2Adapter.new(client, logger, options, config) + rescue Mysql2::Error => error + if error.message.include?("Unknown database") + raise ActiveRecord::NoDatabaseError.new(error.message, error) + else + raise + end end end module ConnectionAdapters class Mysql2Adapter < AbstractMysqlAdapter - - class Column < AbstractMysqlAdapter::Column # :nodoc: - def adapter - Mysql2Adapter - end - end - - ADAPTER_NAME = 'Mysql2' + ADAPTER_NAME = 'Mysql2'.freeze def initialize(connection, logger, connection_options, config) super - @visitor = BindSubstitution.new self + @prepared_statements = false configure_connection end + MAX_INDEX_LENGTH_FOR_UTF8MB4 = 191 + def initialize_schema_migrations_table + if @config[:encoding] == 'utf8mb4' + ActiveRecord::SchemaMigration.create_table(MAX_INDEX_LENGTH_FOR_UTF8MB4) + else + ActiveRecord::SchemaMigration.create_table + end + end + def supports_explain? true end @@ -52,21 +62,29 @@ module ActiveRecord end end - def new_column(field, default, type, null, collation) # :nodoc: - Column.new(field, default, type, null, collation, strict_mode?) - end - def error_number(exception) exception.error_number if exception.respond_to?(:error_number) end + #-- # QUOTING ================================================== + #++ def quote_string(string) @connection.escape(string) end + def quoted_date(value) + if value.acts_like?(:time) && value.respond_to?(:usec) + "#{super}.#{sprintf("%06d", value.usec)}" + else + super + end + end + + #-- # CONNECTION MANAGEMENT ==================================== + #++ def active? return false unless @connection @@ -90,7 +108,9 @@ module ActiveRecord end end + #-- # DATABASE STATEMENTS ====================================== + #++ def explain(arel, binds = []) sql = "EXPLAIN #{to_sql(arel, binds.dup)}" @@ -196,15 +216,17 @@ module ActiveRecord # Returns an array of arrays containing the field values. # Order is the same as that returned by +columns+. - def select_rows(sql, name = nil) + def select_rows(sql, name = nil, binds = []) execute(sql, name).to_a end # Executes the SQL statement in the context of this connection. def execute(sql, name = nil) - # make sure we carry over any changes to ActiveRecord::Base.default_timezone that have been - # made since we established the connection - @connection.query_options[:database_timezone] = ActiveRecord::Base.default_timezone + if @connection + # make sure we carry over any changes to ActiveRecord::Base.default_timezone that have been + # made since we established the connection + @connection.query_options[:database_timezone] = ActiveRecord::Base.default_timezone + end super end @@ -216,12 +238,6 @@ module ActiveRecord alias exec_without_stmt exec_query - # Returns an array of record hashes with the column names as keys and - # column values as values. - def select(sql, name = nil, binds = []) - exec_query(sql, name) - end - def insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) super id_value || @connection.last_id @@ -254,8 +270,12 @@ module ActiveRecord super end - def version - @version ||= @connection.info[:version].scan(/^(\d+)\.(\d+)\.(\d+)/).flatten.map { |v| v.to_i } + def full_version + @full_version ||= @connection.info[:version] + end + + def set_field_encoding field_name + field_name end end end |