X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=ruby%2Flib%2Fruby%2Fgems%2F1.8%2Fgems%2Factiverecord-2.3.5%2Flib%2Factive_record%2Fconnection_adapters%2Fmysql_adapter.rb;fp=ruby%2Flib%2Fruby%2Fgems%2F1.8%2Fgems%2Factiverecord-2.3.5%2Flib%2Factive_record%2Fconnection_adapters%2Fmysql_adapter.rb;h=0000000000000000000000000000000000000000;hb=05ad905dae7df28a0baeee7739c8aab3de34c138;hp=19345d380fbfaeaf5f59fbb5108330ad69edd7f8;hpb=5fcbb31f4376cf38bd1745445a60d75a3758e71c;p=redminele%2Fredminele.git diff --git a/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb b/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb deleted file mode 100644 index 19345d3..0000000 --- a/ruby/lib/ruby/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/mysql_adapter.rb +++ /dev/null @@ -1,630 +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') || - 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 # def all_hashes - rows = [] # rows = [] - each_hash { |row| rows << row } # each_hash { |row| rows << row } - rows # rows - end # 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 # def all_hashes - rows = [] # rows = [] - all_fields = fetch_fields.inject({}) { |fields, f| # all_fields = fetch_fields.inject({}) { |fields, f| - fields[f.name] = nil; fields # fields[f.name] = nil; fields - } # } - each_hash { |row| rows << all_fields.dup.update(row) } # each_hash { |row| rows << all_fields.dup.update(row) } - rows # rows - end # 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 - # 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 - database = config[:database] - - # Require the MySQL driver and define Mysql::Result.all_hashes - unless defined? Mysql - begin - require_library_or_gem('mysql') - rescue LoadError - $stderr.puts '!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql.' - raise - end - end - - MysqlCompat.define_all_hashes_method! - - mysql = Mysql.init - mysql.ssl_set(config[:sslkey], config[:sslcert], config[:sslca], config[:sslcapath], config[:sslcipher]) if config[:sslca] || config[:sslkey] - - default_flags = Mysql.const_defined?(:CLIENT_MULTI_RESULTS) ? Mysql::CLIENT_MULTI_RESULTS : 0 - options = [host, username, password, database, port, socket, default_flags] - ConnectionAdapters::MysqlAdapter.new(mysql, logger, options, config) - end - end - - module ConnectionAdapters - class MysqlColumn < Column #:nodoc: - def extract_default(default) - if sql_type =~ /blob/i || type == :text - if default.blank? - return null ? nil : '' - 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 - - def has_default? - return false if sql_type =~ /blob/i || type == :text #mysql forbids defaults on blob and text columns - super - 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 - - def extract_limit(sql_type) - case sql_type - when /blob|text/i - case sql_type - when /tiny/i - 255 - when /medium/i - 16777215 - when /long/i - 2147483647 # mysql only allows 2^31-1, not 2^32-1, somewhat inconsistently with the tiny/medium/normal cases - else - super # we could return 65535 here, but we leave it undecorated by default - end - when /^bigint/i; 8 - when /^int/i; 4 - when /^mediumint/i; 3 - when /^smallint/i; 2 - when /^tinyint/i; 1 - else - super - end - 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: - # - # * :host - Defaults to "localhost". - # * :port - Defaults to 3306. - # * :socket - Defaults to "/tmp/mysql.sock". - # * :username - Defaults to "root" - # * :password - Defaults to nothing. - # * :database - The name of the database. No default, must be provided. - # * :encoding - (Optional) Sets the client encoding by executing "SET NAMES " after connection. - # * :reconnect - Defaults to false (See MySQL documentation: http://dev.mysql.com/doc/refman/5.0/en/auto-reconnect.html). - # * :sslca - Necessary to use MySQL with an SSL connection. - # * :sslkey - Necessary to use MySQL with an SSL connection. - # * :sslcert - Necessary to use MySQL with an SSL connection. - # * :sslcapath - Necessary to use MySQL with an SSL connection. - # * :sslcipher - Necessary to use MySQL with an SSL connection. - # - class MysqlAdapter < AbstractAdapter - - ## - # :singleton-method: - # 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 - cattr_accessor :emulate_booleans - self.emulate_booleans = true - - ADAPTER_NAME = 'MySQL'.freeze - - LOST_CONNECTION_ERROR_MESSAGES = [ - "Server shutdown in progress", - "Broken pipe", - "Lost connection to MySQL server during query", - "MySQL server has gone away" ] - - QUOTED_TRUE, QUOTED_FALSE = '1'.freeze, '0'.freeze - - NATIVE_DATABASE_TYPES = { - :primary_key => "int(11) DEFAULT NULL auto_increment PRIMARY KEY".freeze, - :string => { :name => "varchar", :limit => 255 }, - :text => { :name => "text" }, - :integer => { :name => "int", :limit => 4 }, - :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 } - } - - def initialize(connection, logger, connection_options, config) - super(connection, logger) - @connection_options, @config = connection_options, config - @quoted_column_names, @quoted_table_names = {}, {} - connect - end - - def adapter_name #:nodoc: - ADAPTER_NAME - end - - def supports_migrations? #:nodoc: - true - end - - def supports_primary_key? #:nodoc: - true - end - - def supports_savepoints? #:nodoc: - true - end - - def native_database_types #:nodoc: - NATIVE_DATABASE_TYPES - 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: - @quoted_column_names[name] ||= "`#{name}`" - end - - def quote_table_name(name) #:nodoc: - @quoted_table_names[name] ||= quote_column_name(name).gsub('.', '`.`') - end - - def quote_string(string) #:nodoc: - @connection.quote(string) - end - - def quoted_true - QUOTED_TRUE - end - - def quoted_false - QUOTED_FALSE - 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 - - def reset! - if @connection.respond_to?(:change_user) - # See http://bugs.mysql.com/bug.php?id=33540 -- the workaround way to - # reset the connection is to change the user to the same user. - @connection.change_user(@config[:username], @config[:password], @config[:database]) - configure_connection - end - 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 - - # Executes a SQL query and returns a MySQL::Result object. Note that you have to free the Result object after you're done using it. - 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 create_savepoint - execute("SAVEPOINT #{current_savepoint_name}") - end - - def rollback_to_savepoint - execute("ROLLBACK TO SAVEPOINT #{current_savepoint_name}") - end - - def release_savepoint - execute("RELEASE SAVEPOINT #{current_savepoint_name}") - end - - def add_limit_offset!(sql, options) #:nodoc: - if limit = options[:limit] - limit = sanitize_limit(limit) - unless offset = options[:offset] - sql << " LIMIT #{limit}" - else - sql << " LIMIT #{offset.to_i}, #{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, options = {}) #:nodoc: - drop_database(name) - create_database(name, options) - 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 = [] - result = execute("SHOW TABLES", name) - result.each { |field| tables << field[0] } - result.free - tables - end - - def drop_table(table_name, options = {}) - super(table_name, options) - end - - def indexes(table_name, name = nil)#:nodoc: - indexes = [] - current_index = nil - result = execute("SHOW KEYS FROM #{quote_table_name(table_name)}", name) - result.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 - result.free - indexes - end - - def columns(table_name, name = nil)#:nodoc: - sql = "SHOW FIELDS FROM #{quote_table_name(table_name)}" - columns = [] - result = execute(sql, name) - result.each { |field| columns << MysqlColumn.new(field[0], field[4], field[1], field[2] == "YES") } - result.free - 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: - column = column_for(table_name, column_name) - change_column table_name, column_name, column.sql_type, :default => default - end - - def change_column_null(table_name, column_name, null, default = nil) - column = column_for(table_name, column_name) - - unless null || default.nil? - execute("UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote(default)} WHERE #{quote_column_name(column_name)} IS NULL") - end - - change_column table_name, column_name, column.sql_type, :null => null - end - - def change_column(table_name, column_name, type, options = {}) #:nodoc: - column = column_for(table_name, column_name) - - unless options_include_default?(options) - options[:default] = column.default - end - - unless options.has_key?(:null) - options[:null] = column.null - 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: - options = {} - if column = columns(table_name).find { |c| c.name == column_name.to_s } - options[:default] = column.default - options[:null] = column.null - else - raise ActiveRecordError, "No such column: #{table_name}.#{column_name}" - end - current_type = select_one("SHOW COLUMNS FROM #{quote_table_name(table_name)} LIKE '#{column_name}'")["Type"] - rename_column_sql = "ALTER TABLE #{quote_table_name(table_name)} CHANGE #{quote_column_name(column_name)} #{quote_column_name(new_column_name)} #{current_type}" - add_column_options!(rename_column_sql, options) - execute(rename_column_sql) - end - - # Maps logical Rails types to MySQL-specific data types. - def type_to_sql(type, limit = nil, precision = nil, scale = nil) - return super unless type.to_s == 'integer' - - case limit - when 1; 'tinyint' - when 2; 'smallint' - when 3; 'mediumint' - when nil, 4, 11; 'int(11)' # compatibility with MySQL default - when 5..8; 'bigint' - else raise(ActiveRecordError, "No integer type has byte size #{limit}") - end - 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 = [] - result = execute("describe #{quote_table_name(table)}") - result.each_hash do |h| - keys << h["Field"]if h["Key"] == "PRI" - end - result.free - keys.length == 1 ? [keys.first, nil] : nil - end - - # Returns just a table's primary key - def primary_key(table) - pk_and_sequence = pk_and_sequence_for(table) - pk_and_sequence && pk_and_sequence.first - end - - def case_sensitive_equality_operator - "= BINARY" - end - - def limited_update_conditions(where_sql, quoted_table_name, quoted_primary_key) - where_sql - end - - private - def connect - encoding = @config[:encoding] - if encoding - @connection.options(Mysql::SET_CHARSET_NAME, encoding) rescue nil - end - - if @config[:sslca] || @config[:sslkey] - @connection.ssl_set(@config[:sslkey], @config[:sslcert], @config[:sslca], @config[:sslcapath], @config[:sslcipher]) - end - - @connection.options(Mysql::OPT_CONNECT_TIMEOUT, @config[:connect_timeout]) if @config[:connect_timeout] - @connection.options(Mysql::OPT_READ_TIMEOUT, @config[:read_timeout]) if @config[:read_timeout] - @connection.options(Mysql::OPT_WRITE_TIMEOUT, @config[:write_timeout]) if @config[:write_timeout] - - @connection.real_connect(*@connection_options) - - # reconnect must be set after real_connect is called, because real_connect sets it to false internally - @connection.reconnect = !!@config[:reconnect] if @connection.respond_to?(:reconnect=) - - configure_connection - end - - def configure_connection - encoding = @config[:encoding] - 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 - - def column_for(table_name, column_name) - unless column = columns(table_name).find { |c| c.name == column_name.to_s } - raise "No such column: #{table_name}.#{column_name}" - end - column - end - end - end -end