Diffstat (limited to 'vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb | 496 |
1 files changed, 0 insertions, 496 deletions
diff --git a/vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb b/vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb deleted file mode 100644 index 04869bd..0000000 --- a/vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb +++ b/dev/null @@ -1,496 +0,0 @@ -require 'active_record/connection_adapters/abstract_adapter' -require 'set' - -module MysqlCompat #:nodoc: - # add all_hashes method to standard mysql-c bindings or pure ruby version - def self.define_all_hashes_method! - raise 'Mysql not loaded' unless defined?(::Mysql) - - target = defined?(Mysql::Result) ? Mysql::Result : MysqlRes - return if target.instance_methods.include?('all_hashes') - - # Ruby driver has a version string and returns null values in each_hash - # C driver >= 2.7 returns null values in each_hash - if Mysql.const_defined?(:VERSION) && (Mysql::VERSION.is_a?(String) || Mysql::VERSION >= 20700) - target.class_eval <<-'end_eval' - def all_hashes - rows = [] - each_hash { |row| rows << row } - rows - end - end_eval - - # adapters before 2.7 don't have a version constant - # and don't return null values in each_hash - else - target.class_eval <<-'end_eval' - def all_hashes - rows = [] - all_fields = fetch_fields.inject({}) { |fields, f| fields[f.name] = nil; fields } - each_hash { |row| rows << all_fields.dup.update(row) } - rows - end - end_eval - end - - unless target.instance_methods.include?('all_hashes') || - target.instance_methods.include?(:all_hashes) - raise "Failed to defined #{target.name}#all_hashes method. Mysql::VERSION = #{Mysql::VERSION.inspect}" - end - end -end - -module ActiveRecord - class Base - def self.require_mysql - # Include the MySQL driver if one hasn't already been loaded - unless defined? Mysql - begin - require_library_or_gem 'mysql' - rescue LoadError => cannot_require_mysql - # Use the bundled Ruby/MySQL driver if no driver is already in place - begin - ActiveRecord::Base.logger.info( - "WARNING: You're using the Ruby-based MySQL library that ships with Rails. This library is not suited for production. " + - "Please install the C-based MySQL library instead (gem install mysql)." - ) if ActiveRecord::Base.logger - - require 'active_record/vendor/mysql' - rescue LoadError - raise cannot_require_mysql - end - end - end - - # Define Mysql::Result.all_hashes - MysqlCompat.define_all_hashes_method! - end - - # Establishes a connection to the database that's used by all Active Record objects. - def self.mysql_connection(config) # :nodoc: - config = config.symbolize_keys - host = config[:host] - port = config[:port] - socket = config[:socket] - username = config[:username] ? config[:username].to_s : 'root' - password = config[:password].to_s - - if config.has_key?(:database) - database = config[:database] - else - raise ArgumentError, "No database specified. Missing argument: database." - end - - require_mysql - mysql = Mysql.init - mysql.ssl_set(config[:sslkey], config[:sslcert], config[:sslca], config[:sslcapath], config[:sslcipher]) if config[:sslkey] - - ConnectionAdapters::MysqlAdapter.new(mysql, logger, [host, username, password, database, port, socket], config) - end - end - - module ConnectionAdapters - class MysqlColumn < Column #:nodoc: - def extract_default(default) - if type == :binary || type == :text - if default.blank? - default - else - raise ArgumentError, "#{type} columns cannot have a default value: #{default.inspect}" - end - elsif missing_default_forged_as_empty_string?(default) - nil - else - super - end - end - - private - def simplified_type(field_type) - return :boolean if MysqlAdapter.emulate_booleans && field_type.downcase.index("tinyint(1)") - return :string if field_type =~ /enum/i - super - end - - # MySQL misreports NOT NULL column default when none is given. - # We can't detect this for columns which may have a legitimate '' - # default (string) but we can for others (integer, datetime, boolean, - # and the rest). - # - # Test whether the column has default '', is not null, and is not - # a type allowing default ''. - def missing_default_forged_as_empty_string?(default) - type != :string && !null && default == '' - end - end - - # The MySQL adapter will work with both Ruby/MySQL, which is a Ruby-based MySQL adapter that comes bundled with Active Record, and with - # the faster C-based MySQL/Ruby adapter (available both as a gem and from http://www.tmtm.org/en/mysql/ruby/). - # - # Options: - # - # * <tt>:host</tt> -- Defaults to localhost - # * <tt>:port</tt> -- Defaults to 3306 - # * <tt>:socket</tt> -- Defaults to /tmp/mysql.sock - # * <tt>:username</tt> -- Defaults to root - # * <tt>:password</tt> -- Defaults to nothing - # * <tt>:database</tt> -- The name of the database. No default, must be provided. - # * <tt>:encoding</tt> -- (Optional) Sets the client encoding by executing "SET NAMES <encoding>" after connection - # * <tt>:sslkey</tt> -- Necessary to use MySQL with an SSL connection - # * <tt>:sslcert</tt> -- Necessary to use MySQL with an SSL connection - # * <tt>:sslcapath</tt> -- Necessary to use MySQL with an SSL connection - # * <tt>:sslcipher</tt> -- Necessary to use MySQL with an SSL connection - # - # By default, the MysqlAdapter will consider all columns of type tinyint(1) - # as boolean. If you wish to disable this emulation (which was the default - # behavior in versions 0.13.1 and earlier) you can add the following line - # to your environment.rb file: - # - # ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans = false - class MysqlAdapter < AbstractAdapter - @@emulate_booleans = true - cattr_accessor :emulate_booleans - - LOST_CONNECTION_ERROR_MESSAGES = [ - "Server shutdown in progress", - "Broken pipe", - "Lost connection to MySQL server during query", - "MySQL server has gone away" - ] - - def initialize(connection, logger, connection_options, config) - super(connection, logger) - @connection_options, @config = connection_options, config - - connect - end - - def adapter_name #:nodoc: - 'MySQL' - end - - def supports_migrations? #:nodoc: - true - end - - def native_database_types #:nodoc: - { - :primary_key => "int(11) DEFAULT NULL auto_increment PRIMARY KEY", - :string => { :name => "varchar", :limit => 255 }, - :text => { :name => "text" }, - :integer => { :name => "int", :limit => 11 }, - :float => { :name => "float" }, - :decimal => { :name => "decimal" }, - :datetime => { :name => "datetime" }, - :timestamp => { :name => "datetime" }, - :time => { :name => "time" }, - :date => { :name => "date" }, - :binary => { :name => "blob" }, - :boolean => { :name => "tinyint", :limit => 1 } - } - end - - - # QUOTING ================================================== - - def quote(value, column = nil) - if value.kind_of?(String) && column && column.type == :binary && column.class.respond_to?(:string_to_binary) - s = column.class.string_to_binary(value).unpack("H*")[0] - "x'#{s}'" - elsif value.kind_of?(BigDecimal) - "'#{value.to_s("F")}'" - else - super - end - end - - def quote_column_name(name) #:nodoc: - "`#{name}`" - end - - def quote_table_name(name) #:nodoc: - quote_column_name(name).gsub('.', '`.`') - end - - def quote_string(string) #:nodoc: - @connection.quote(string) - end - - def quoted_true - "1" - end - - def quoted_false - "0" - end - - # REFERENTIAL INTEGRITY ==================================== - - def disable_referential_integrity(&block) #:nodoc: - old = select_value("SELECT @@FOREIGN_KEY_CHECKS") - - begin - update("SET FOREIGN_KEY_CHECKS = 0") - yield - ensure - update("SET FOREIGN_KEY_CHECKS = #{old}") - end - end - - # CONNECTION MANAGEMENT ==================================== - - def active? - if @connection.respond_to?(:stat) - @connection.stat - else - @connection.query 'select 1' - end - - # mysql-ruby doesn't raise an exception when stat fails. - if @connection.respond_to?(:errno) - @connection.errno.zero? - else - true - end - rescue Mysql::Error - false - end - - def reconnect! - disconnect! - connect - end - - def disconnect! - @connection.close rescue nil - end - - - # DATABASE STATEMENTS ====================================== - - def select_rows(sql, name = nil) - @connection.query_with_result = true - result = execute(sql, name) - rows = [] - result.each { |row| rows << row } - result.free - rows - end - - def execute(sql, name = nil) #:nodoc: - log(sql, name) { @connection.query(sql) } - rescue ActiveRecord::StatementInvalid => exception - if exception.message.split(":").first =~ /Packets out of order/ - raise ActiveRecord::StatementInvalid, "'Packets out of order' error was received from the database. Please update your mysql bindings (gem install mysql) and read http://dev.mysql.com/doc/mysql/en/password-hashing.html for more information. If you're on Windows, use the Instant Rails installer to get the updated mysql bindings." - else - raise - end - end - - def insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) #:nodoc: - super sql, name - id_value || @connection.insert_id - end - - def update_sql(sql, name = nil) #:nodoc: - super - @connection.affected_rows - end - - def begin_db_transaction #:nodoc: - execute "BEGIN" - rescue Exception - # Transactions aren't supported - end - - def commit_db_transaction #:nodoc: - execute "COMMIT" - rescue Exception - # Transactions aren't supported - end - - def rollback_db_transaction #:nodoc: - execute "ROLLBACK" - rescue Exception - # Transactions aren't supported - end - - - def add_limit_offset!(sql, options) #:nodoc: - if limit = options[:limit] - unless offset = options[:offset] - sql << " LIMIT #{limit}" - else - sql << " LIMIT #{offset}, #{limit}" - end - end - end - - - # SCHEMA STATEMENTS ======================================== - - def structure_dump #:nodoc: - if supports_views? - sql = "SHOW FULL TABLES WHERE Table_type = 'BASE TABLE'" - else - sql = "SHOW TABLES" - end - - select_all(sql).inject("") do |structure, table| - table.delete('Table_type') - structure += select_one("SHOW CREATE TABLE #{quote_table_name(table.to_a.first.last)}")["Create Table"] + ";\n\n" - end - end - - def recreate_database(name) #:nodoc: - drop_database(name) - create_database(name) - end - - # Create a new MySQL database with optional :charset and :collation. - # Charset defaults to utf8. - # - # Example: - # create_database 'charset_test', :charset => 'latin1', :collation => 'latin1_bin' - # create_database 'matt_development' - # create_database 'matt_development', :charset => :big5 - def create_database(name, options = {}) - if options[:collation] - execute "CREATE DATABASE `#{name}` DEFAULT CHARACTER SET `#{options[:charset] || 'utf8'}` COLLATE `#{options[:collation]}`" - else - execute "CREATE DATABASE `#{name}` DEFAULT CHARACTER SET `#{options[:charset] || 'utf8'}`" - end - end - - def drop_database(name) #:nodoc: - execute "DROP DATABASE IF EXISTS `#{name}`" - end - - def current_database - select_value 'SELECT DATABASE() as db' - end - - # Returns the database character set. - def charset - show_variable 'character_set_database' - end - - # Returns the database collation strategy. - def collation - show_variable 'collation_database' - end - - def tables(name = nil) #:nodoc: - tables = [] - execute("SHOW TABLES", name).each { |field| tables << field[0] } - tables - end - - def drop_table(table_name, options = {}) - super(table_name, options) - end - - def indexes(table_name, name = nil)#:nodoc: - indexes = [] - current_index = nil - execute("SHOW KEYS FROM #{quote_table_name(table_name)}", name).each do |row| - if current_index != row[2] - next if row[2] == "PRIMARY" # skip the primary key - current_index = row[2] - indexes << IndexDefinition.new(row[0], row[2], row[1] == "0", []) - end - - indexes.last.columns << row[4] - end - indexes - end - - def columns(table_name, name = nil)#:nodoc: - sql = "SHOW FIELDS FROM #{quote_table_name(table_name)}" - columns = [] - execute(sql, name).each { |field| columns << MysqlColumn.new(field[0], field[4], field[1], field[2] == "YES") } - columns - end - - def create_table(table_name, options = {}) #:nodoc: - super(table_name, options.reverse_merge(:options => "ENGINE=InnoDB")) - end - - def rename_table(table_name, new_name) - execute "RENAME TABLE #{quote_table_name(table_name)} TO #{quote_table_name(new_name)}" - end - - def change_column_default(table_name, column_name, default) #:nodoc: - current_type = select_one("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE '#{column_name}'")["Type"] - - execute("ALTER TABLE #{quote_table_name(table_name)} CHANGE #{quote_column_name(column_name)} #{quote_column_name(column_name)} #{current_type} DEFAULT #{quote(default)}") - end - - def change_column(table_name, column_name, type, options = {}) #:nodoc: - unless options_include_default?(options) - if column = columns(table_name).find { |c| c.name == column_name.to_s } - options[:default] = column.default - else - raise "No such column: #{table_name}.#{column_name}" - end - end - - change_column_sql = "ALTER TABLE #{quote_table_name(table_name)} CHANGE #{quote_column_name(column_name)} #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}" - add_column_options!(change_column_sql, options) - execute(change_column_sql) - end - - def rename_column(table_name, column_name, new_column_name) #:nodoc: - current_type = select_one("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE '#{column_name}'")["Type"] - execute "ALTER TABLE #{quote_table_name(table_name)} CHANGE #{quote_column_name(column_name)} #{quote_column_name(new_column_name)} #{current_type}" - end - - - # SHOW VARIABLES LIKE 'name' - def show_variable(name) - variables = select_all("SHOW VARIABLES LIKE '#{name}'") - variables.first['Value'] unless variables.empty? - end - - # Returns a table's primary key and belonging sequence. - def pk_and_sequence_for(table) #:nodoc: - keys = [] - execute("describe #{quote_table_name(table)}").each_hash do |h| - keys << h["Field"]if h["Key"] == "PRI" - end - keys.length == 1 ? [keys.first, nil] : nil - end - - private - def connect - encoding = @config[:encoding] - if encoding - @connection.options(Mysql::SET_CHARSET_NAME, encoding) rescue nil - end - @connection.ssl_set(@config[:sslkey], @config[:sslcert], @config[:sslca], @config[:sslcapath], @config[:sslcipher]) if @config[:sslkey] - @connection.real_connect(*@connection_options) - execute("SET NAMES '#{encoding}'") if encoding - - # By default, MySQL 'where id is null' selects the last inserted id. - # Turn this off. http://dev.rubyonrails.org/ticket/6778 - execute("SET SQL_AUTO_IS_NULL=0") - end - - def select(sql, name = nil) - @connection.query_with_result = true - result = execute(sql, name) - rows = result.all_hashes - result.free - rows - end - - def supports_views? - version[0] >= 5 - end - - def version - @version ||= @connection.server_info.scan(/^(\d+)\.(\d+)\.(\d+)/).flatten.map { |v| v.to_i } - end - end - end -end |