Create an AbstractMysqlAdapter to abstract the common code between MysqlAdapter and Mysql2Adapter.
This commit is contained in:
Jon Leighton
parent
cfe7548aef
commit
5766539342
@ -0,0 +1,552 @@
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require 'active_support/core_ext/object/blank'
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module ActiveRecord
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module ConnectionAdapters
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class AbstractMysqlAdapter < AbstractAdapter
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class Column < ConnectionAdapters::Column
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def extract_default(default)
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if sql_type =~ /blob/i || type == :text
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if default.blank?
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return null ? nil : ''
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else
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raise ArgumentError, "#{type} columns cannot have a default value: #{default.inspect}"
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end
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elsif missing_default_forged_as_empty_string?(default)
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nil
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else
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super
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end
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end
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def has_default?
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return false if sql_type =~ /blob/i || type == :text #mysql forbids defaults on blob and text columns
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super
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end
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private
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def extract_limit(sql_type)
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case sql_type
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when /blob|text/i
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case sql_type
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when /tiny/i
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255
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when /medium/i
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16777215
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when /long/i
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2147483647 # mysql only allows 2^31-1, not 2^32-1, somewhat inconsistently with the tiny/medium/normal cases
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else
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super # we could return 65535 here, but we leave it undecorated by default
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end
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when /^bigint/i; 8
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when /^int/i; 4
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when /^mediumint/i; 3
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when /^smallint/i; 2
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when /^tinyint/i; 1
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else
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super
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end
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end
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# MySQL misreports NOT NULL column default when none is given.
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# We can't detect this for columns which may have a legitimate ''
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# default (string) but we can for others (integer, datetime, boolean,
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# and the rest).
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#
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# Test whether the column has default '', is not null, and is not
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# a type allowing default ''.
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def missing_default_forged_as_empty_string?(default)
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type != :string && !null && default == ''
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end
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end
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##
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# :singleton-method:
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# By default, the MysqlAdapter will consider all columns of type <tt>tinyint(1)</tt>
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# as boolean. If you wish to disable this emulation (which was the default
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# behavior in versions 0.13.1 and earlier) you can add the following line
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# to your application.rb file:
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#
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# ActiveRecord::ConnectionAdapters::Mysql[2]Adapter.emulate_booleans = false
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class_attribute :emulate_booleans
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self.emulate_booleans = true
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LOST_CONNECTION_ERROR_MESSAGES = [
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"Server shutdown in progress",
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"Broken pipe",
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"Lost connection to MySQL server during query",
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"MySQL server has gone away" ]
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QUOTED_TRUE, QUOTED_FALSE = '1', '0'
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NATIVE_DATABASE_TYPES = {
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:primary_key => "int(11) DEFAULT NULL auto_increment PRIMARY KEY",
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:string => { :name => "varchar", :limit => 255 },
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:text => { :name => "text" },
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:integer => { :name => "int", :limit => 4 },
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:float => { :name => "float" },
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:decimal => { :name => "decimal" },
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:datetime => { :name => "datetime" },
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:timestamp => { :name => "datetime" },
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:time => { :name => "time" },
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:date => { :name => "date" },
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:binary => { :name => "blob" },
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:boolean => { :name => "tinyint", :limit => 1 }
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}
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# FIXME: Make the first parameter more similar for the two adapters
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def initialize(connection, logger, connection_options, config)
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super(connection, logger)
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@connection_options, @config = connection_options, config
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@quoted_column_names, @quoted_table_names = {}, {}
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end
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def self.visitor_for(pool) # :nodoc:
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Arel::Visitors::MySQL.new(pool)
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end
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def adapter_name #:nodoc:
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self.class::ADAPTER_NAME
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end
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# Returns true, since this connection adapter supports migrations.
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def supports_migrations?
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true
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end
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def supports_primary_key?
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true
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end
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# Returns true, since this connection adapter supports savepoints.
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def supports_savepoints?
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true
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end
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def native_database_types
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NATIVE_DATABASE_TYPES
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end
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# HELPER METHODS ===========================================
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# The two drivers have slightly different ways of yielding hashes of results, so
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# this method must be implemented to provide a uniform interface.
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def each_hash(result) # :nodoc:
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raise NotImplementedError
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end
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# Overridden by the adapters to instantiate their specific Column type.
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def new_column(field, default, type, null) # :nodoc:
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Column.new(field, default, type, null)
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end
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# Must return the Mysql error number from the exception, if the exception has an
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# error number.
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def error_number(exception) # :nodoc:
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raise NotImplementedError
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end
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# QUOTING ==================================================
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def quote(value, column = nil)
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if value.kind_of?(String) && column && column.type == :binary && column.class.respond_to?(:string_to_binary)
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s = column.class.string_to_binary(value).unpack("H*")[0]
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"x'#{s}'"
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elsif value.kind_of?(BigDecimal)
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value.to_s("F")
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else
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super
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end
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end
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def quote_column_name(name) #:nodoc:
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@quoted_column_names[name] ||= "`#{name.to_s.gsub('`', '``')}`"
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end
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def quote_table_name(name) #:nodoc:
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@quoted_table_names[name] ||= quote_column_name(name).gsub('.', '`.`')
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end
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def quoted_true
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QUOTED_TRUE
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end
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def quoted_false
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QUOTED_FALSE
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end
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# REFERENTIAL INTEGRITY ====================================
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def disable_referential_integrity(&block) #:nodoc:
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old = select_value("SELECT @@FOREIGN_KEY_CHECKS")
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begin
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update("SET FOREIGN_KEY_CHECKS = 0")
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yield
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ensure
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update("SET FOREIGN_KEY_CHECKS = #{old}")
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end
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end
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# DATABASE STATEMENTS ======================================
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# Executes the SQL statement in the context of this connection.
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def execute(sql, name = nil)
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if name == :skip_logging
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@connection.query(sql)
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else
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log(sql, name) { @connection.query(sql) }
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end
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rescue ActiveRecord::StatementInvalid => exception
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if exception.message.split(":").first =~ /Packets out of order/
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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."
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else
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raise
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end
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end
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# MysqlAdapter has to free a result after using it, so we use this method to write
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# stuff in a abstract way without concerning ourselves about whether it needs to be
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# explicitly freed or not.
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def execute_and_free(sql, name = nil) #:nodoc:
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yield execute(sql, name)
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end
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def update_sql(sql, name = nil) #:nodoc:
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super
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@connection.affected_rows
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end
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def begin_db_transaction
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execute "BEGIN"
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rescue Exception
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# Transactions aren't supported
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end
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def commit_db_transaction #:nodoc:
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execute "COMMIT"
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rescue Exception
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# Transactions aren't supported
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end
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def rollback_db_transaction #:nodoc:
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execute "ROLLBACK"
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rescue Exception
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# Transactions aren't supported
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end
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def create_savepoint
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execute("SAVEPOINT #{current_savepoint_name}")
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end
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def rollback_to_savepoint
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execute("ROLLBACK TO SAVEPOINT #{current_savepoint_name}")
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end
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def release_savepoint
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execute("RELEASE SAVEPOINT #{current_savepoint_name}")
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end
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# In the simple case, MySQL allows us to place JOINs directly into the UPDATE
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# query. However, this does not allow for LIMIT, OFFSET and ORDER. To support
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# these, we must use a subquery. However, MySQL is too stupid to create a
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# temporary table for this automatically, so we have to give it some prompting
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# in the form of a subsubquery. Ugh!
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def join_to_update(update, select) #:nodoc:
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if select.limit || select.offset || select.orders.any?
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subsubselect = select.clone
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subsubselect.projections = [update.key]
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subselect = Arel::SelectManager.new(select.engine)
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subselect.project Arel.sql(update.key.name)
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subselect.from subsubselect.as('__active_record_temp')
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update.where update.key.in(subselect)
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else
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update.table select.source
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update.wheres = select.constraints
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end
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end
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# SCHEMA STATEMENTS ========================================
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def structure_dump #:nodoc:
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if supports_views?
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sql = "SHOW FULL TABLES WHERE Table_type = 'BASE TABLE'"
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else
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sql = "SHOW TABLES"
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end
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select_all(sql).map do |table|
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table.delete('Table_type')
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sql = "SHOW CREATE TABLE #{quote_table_name(table.to_a.first.last)}"
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exec_without_stmt(sql).first['Create Table'] + ";\n\n"
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end.join("")
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end
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# Drops the database specified on the +name+ attribute
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# and creates it again using the provided +options+.
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def recreate_database(name, options = {})
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drop_database(name)
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create_database(name, options)
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end
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# Create a new MySQL database with optional <tt>:charset</tt> and <tt>:collation</tt>.
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# Charset defaults to utf8.
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#
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# Example:
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# create_database 'charset_test', :charset => 'latin1', :collation => 'latin1_bin'
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# create_database 'matt_development'
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# create_database 'matt_development', :charset => :big5
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def create_database(name, options = {})
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if options[:collation]
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execute "CREATE DATABASE `#{name}` DEFAULT CHARACTER SET `#{options[:charset] || 'utf8'}` COLLATE `#{options[:collation]}`"
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else
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execute "CREATE DATABASE `#{name}` DEFAULT CHARACTER SET `#{options[:charset] || 'utf8'}`"
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end
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end
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# Drops a MySQL database.
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#
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# Example:
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# drop_database('sebastian_development')
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def drop_database(name) #:nodoc:
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execute "DROP DATABASE IF EXISTS `#{name}`"
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end
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def current_database
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select_value 'SELECT DATABASE() as db'
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end
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# Returns the database character set.
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def charset
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show_variable 'character_set_database'
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end
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# Returns the database collation strategy.
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def collation
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show_variable 'collation_database'
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end
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def tables(name = nil, database = nil) #:nodoc:
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sql = ["SHOW TABLES", database].compact.join(' IN ')
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execute_and_free(sql, 'SCHEMA') do |result|
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result.collect { |field| field.first }
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end
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end
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def table_exists?(name)
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return true if super
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name = name.to_s
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schema, table = name.split('.', 2)
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unless table # A table was provided without a schema
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table = schema
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schema = nil
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end
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tables(nil, schema).include? table
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end
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# Returns an array of indexes for the given table.
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def indexes(table_name, name = nil) #:nodoc:
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indexes = []
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current_index = nil
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execute_and_free("SHOW KEYS FROM #{quote_table_name(table_name)}", 'SCHEMA') do |result|
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each_hash(result) do |row|
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if current_index != row[:Key_name]
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next if row[:Key_name] == 'PRIMARY' # skip the primary key
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current_index = row[:Key_name]
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indexes << IndexDefinition.new(row[:Table], row[:Key_name], row[:Non_unique].to_i == 0, [], [])
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end
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indexes.last.columns << row[:Column_name]
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indexes.last.lengths << row[:Sub_part]
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end
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end
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indexes
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end
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# Returns an array of +Column+ objects for the table specified by +table_name+.
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def columns(table_name, name = nil)#:nodoc:
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sql = "SHOW FIELDS FROM #{quote_table_name(table_name)}"
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execute_and_free(sql, 'SCHEMA') do |result|
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each_hash(result).map do |field|
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new_column(field[:Field], field[:Default], field[:Type], field[:Null] == "YES")
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end
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end
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end
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def create_table(table_name, options = {}) #:nodoc:
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super(table_name, options.reverse_merge(:options => "ENGINE=InnoDB"))
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end
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# Renames a table.
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#
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# Example:
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# rename_table('octopuses', 'octopi')
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def rename_table(table_name, new_name)
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execute "RENAME TABLE #{quote_table_name(table_name)} TO #{quote_table_name(new_name)}"
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end
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def add_column(table_name, column_name, type, options = {})
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execute("ALTER TABLE #{quote_table_name(table_name)} #{add_column_sql(table_name, column_name, type, options)}")
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end
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def change_column_default(table_name, column_name, default)
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column = column_for(table_name, column_name)
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change_column table_name, column_name, column.sql_type, :default => default
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end
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def change_column_null(table_name, column_name, null, default = nil)
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column = column_for(table_name, column_name)
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unless null || default.nil?
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execute("UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote(default)} WHERE #{quote_column_name(column_name)} IS NULL")
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end
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change_column table_name, column_name, column.sql_type, :null => null
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end
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def change_column(table_name, column_name, type, options = {}) #:nodoc:
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execute("ALTER TABLE #{quote_table_name(table_name)} #{change_column_sql(table_name, column_name, type, options)}")
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end
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def rename_column(table_name, column_name, new_column_name) #:nodoc:
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execute("ALTER TABLE #{quote_table_name(table_name)} #{rename_column_sql(table_name, column_name, new_column_name)}")
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end
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# Maps logical Rails types to MySQL-specific data types.
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def type_to_sql(type, limit = nil, precision = nil, scale = nil)
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return super unless type.to_s == 'integer'
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case limit
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when 1; 'tinyint'
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when 2; 'smallint'
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when 3; 'mediumint'
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when nil, 4, 11; 'int(11)' # compatibility with MySQL default
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when 5..8; 'bigint'
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else raise(ActiveRecordError, "No integer type has byte size #{limit}")
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end
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end
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def add_column_position!(sql, options)
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if options[:first]
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sql << " FIRST"
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elsif options[:after]
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sql << " AFTER #{quote_column_name(options[:after])}"
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end
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end
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# SHOW VARIABLES LIKE 'name'
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def show_variable(name)
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variables = select_all("SHOW VARIABLES LIKE '#{name}'")
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variables.first['Value'] unless variables.empty?
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end
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# Returns a table's primary key and belonging sequence.
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def pk_and_sequence_for(table)
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execute_and_free("DESCRIBE #{quote_table_name(table)}", 'SCHEMA') do |result|
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keys = each_hash(result).select { |row| row[:Key] == 'PRI' }.map { |row| row[:Field] }
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keys.length == 1 ? [keys.first, nil] : nil
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end
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end
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# Returns just a table's primary key
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def primary_key(table)
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pk_and_sequence = pk_and_sequence_for(table)
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pk_and_sequence && pk_and_sequence.first
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end
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def case_sensitive_modifier(node)
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Arel::Nodes::Bin.new(node)
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end
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def limited_update_conditions(where_sql, quoted_table_name, quoted_primary_key)
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where_sql
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end
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protected
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def quoted_columns_for_index(column_names, options = {})
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length = options[:length] if options.is_a?(Hash)
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case length
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when Hash
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column_names.map {|name| length[name] ? "#{quote_column_name(name)}(#{length[name]})" : quote_column_name(name) }
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when Fixnum
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column_names.map {|name| "#{quote_column_name(name)}(#{length})"}
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else
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column_names.map {|name| quote_column_name(name) }
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end
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end
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def translate_exception(exception, message)
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case error_number(exception)
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when 1062
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||||
RecordNotUnique.new(message, exception)
|
||||
when 1452
|
||||
InvalidForeignKey.new(message, exception)
|
||||
else
|
||||
super
|
||||
end
|
||||
end
|
||||
|
||||
def add_column_sql(table_name, column_name, type, options = {})
|
||||
add_column_sql = "ADD #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
|
||||
add_column_options!(add_column_sql, options)
|
||||
add_column_position!(add_column_sql, options)
|
||||
add_column_sql
|
||||
end
|
||||
|
||||
def change_column_sql(table_name, column_name, type, options = {})
|
||||
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 = "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)
|
||||
add_column_position!(change_column_sql, options)
|
||||
change_column_sql
|
||||
end
|
||||
|
||||
def rename_column_sql(table_name, column_name, new_column_name)
|
||||
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 = "CHANGE #{quote_column_name(column_name)} #{quote_column_name(new_column_name)} #{current_type}"
|
||||
add_column_options!(rename_column_sql, options)
|
||||
rename_column_sql
|
||||
end
|
||||
|
||||
private
|
||||
|
||||
def supports_views?
|
||||
version[0] >= 5
|
||||
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
|
||||
@ -1,4 +1,4 @@
|
||||
# encoding: utf-8
|
||||
require 'active_record/connection_adapters/abstract_mysql_adapter'
|
||||
|
||||
gem 'mysql2', '~> 0.3.6'
|
||||
require 'mysql2'
|
||||
@ -20,31 +20,13 @@ def self.mysql2_connection(config)
|
||||
end
|
||||
|
||||
module ConnectionAdapters
|
||||
class Mysql2IndexDefinition < Struct.new(:table, :name, :unique, :columns, :lengths) #:nodoc:
|
||||
end
|
||||
class Mysql2Adapter < AbstractMysqlAdapter
|
||||
class Column < AbstractMysqlAdapter::Column # :nodoc:
|
||||
BOOL = "tinyint(1)"
|
||||
|
||||
class Mysql2Column < Column
|
||||
BOOL = "tinyint(1)"
|
||||
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
|
||||
private
|
||||
|
||||
def has_default?
|
||||
return false if sql_type =~ /blob/i || type == :text #mysql forbids defaults on blob and text columns
|
||||
super
|
||||
end
|
||||
|
||||
private
|
||||
# FIXME: Combine with the mysql version and move to abstract adapter
|
||||
def simplified_type(field_type)
|
||||
return :boolean if Mysql2Adapter.emulate_booleans && field_type.downcase.index(BOOL)
|
||||
|
||||
@ -56,155 +38,45 @@ def simplified_type(field_type)
|
||||
super
|
||||
end
|
||||
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
|
||||
|
||||
class Mysql2Adapter < AbstractAdapter
|
||||
cattr_accessor :emulate_booleans
|
||||
self.emulate_booleans = true
|
||||
end
|
||||
|
||||
ADAPTER_NAME = 'Mysql2'
|
||||
PRIMARY = "PRIMARY"
|
||||
|
||||
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', '0'
|
||||
|
||||
NATIVE_DATABASE_TYPES = {
|
||||
:primary_key => "int(11) DEFAULT NULL auto_increment PRIMARY KEY",
|
||||
: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 = {}, {}
|
||||
super
|
||||
configure_connection
|
||||
end
|
||||
|
||||
def self.visitor_for(pool) # :nodoc:
|
||||
Arel::Visitors::MySQL.new(pool)
|
||||
end
|
||||
# HELPER METHODS ===========================================
|
||||
|
||||
def adapter_name
|
||||
ADAPTER_NAME
|
||||
end
|
||||
|
||||
# Returns true, since this connection adapter supports migrations.
|
||||
def supports_migrations?
|
||||
true
|
||||
end
|
||||
|
||||
def supports_primary_key?
|
||||
true
|
||||
end
|
||||
|
||||
# Returns true, since this connection adapter supports savepoints.
|
||||
def supports_savepoints?
|
||||
true
|
||||
end
|
||||
|
||||
def native_database_types
|
||||
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")
|
||||
def each_hash(result) # :nodoc:
|
||||
if block_given?
|
||||
result.each(:as => :hash, :symbolize_keys => true) do |row|
|
||||
yield row
|
||||
end
|
||||
else
|
||||
super
|
||||
to_enum(:each_hash, result)
|
||||
end
|
||||
end
|
||||
|
||||
def quote_column_name(name) #:nodoc:
|
||||
@quoted_column_names[name] ||= "`#{name.to_s.gsub('`', '``')}`"
|
||||
def new_column(field, default, type, null) # :nodoc:
|
||||
Column.new(field, default, type, null)
|
||||
end
|
||||
|
||||
def quote_table_name(name) #:nodoc:
|
||||
@quoted_table_names[name] ||= quote_column_name(name).gsub('.', '`.`')
|
||||
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_true
|
||||
QUOTED_TRUE
|
||||
end
|
||||
|
||||
def quoted_false
|
||||
QUOTED_FALSE
|
||||
end
|
||||
|
||||
def substitute_at(column, index)
|
||||
Arel.sql "\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?
|
||||
@ -217,11 +89,6 @@ def reconnect!
|
||||
connect
|
||||
end
|
||||
|
||||
# this is set to true in 2.3, but we don't want it to be
|
||||
def requires_reloading?
|
||||
false
|
||||
end
|
||||
|
||||
# Disconnects from the database if already connected.
|
||||
# Otherwise, this method does nothing.
|
||||
def disconnect!
|
||||
@ -277,17 +144,22 @@ 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 name == :skip_logging
|
||||
@connection.query(sql)
|
||||
else
|
||||
log(sql, name) { @connection.query(sql) }
|
||||
end
|
||||
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
|
||||
|
||||
super
|
||||
end
|
||||
|
||||
def exec_query(sql, name = 'SQL', binds = [])
|
||||
result = execute(sql, name)
|
||||
ActiveRecord::Result.new(result.fields, result.to_a)
|
||||
end
|
||||
|
||||
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 = [])
|
||||
binds = binds.dup
|
||||
exec_query(sql.gsub("\0") { quote(*binds.shift.reverse) }, name).to_a
|
||||
end
|
||||
|
||||
def insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil)
|
||||
@ -316,379 +188,35 @@ def last_inserted_id(result)
|
||||
@connection.last_id
|
||||
end
|
||||
|
||||
def update_sql(sql, name = nil)
|
||||
super
|
||||
@connection.affected_rows
|
||||
end
|
||||
|
||||
def begin_db_transaction
|
||||
execute "BEGIN"
|
||||
rescue Exception
|
||||
# Transactions aren't supported
|
||||
end
|
||||
|
||||
def commit_db_transaction
|
||||
execute "COMMIT"
|
||||
rescue Exception
|
||||
# Transactions aren't supported
|
||||
end
|
||||
|
||||
def rollback_db_transaction
|
||||
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
|
||||
|
||||
# SCHEMA STATEMENTS ========================================
|
||||
|
||||
def structure_dump
|
||||
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
|
||||
|
||||
# Drops the database specified on the +name+ attribute
|
||||
# and creates it again using the provided +options+.
|
||||
def recreate_database(name, options = {})
|
||||
drop_database(name)
|
||||
create_database(name, options)
|
||||
end
|
||||
|
||||
# Create a new MySQL database with optional <tt>:charset</tt> and <tt>:collation</tt>.
|
||||
# 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
|
||||
|
||||
# Drops a MySQL database.
|
||||
#
|
||||
# Example:
|
||||
# drop_database('sebastian_development')
|
||||
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, database = nil) #:nodoc:
|
||||
sql = ["SHOW TABLES", database].compact.join(' IN ')
|
||||
execute(sql, 'SCHEMA').collect do |field|
|
||||
field.first
|
||||
end
|
||||
end
|
||||
|
||||
def table_exists?(name)
|
||||
return true if super
|
||||
|
||||
name = name.to_s
|
||||
schema, table = name.split('.', 2)
|
||||
|
||||
unless table # A table was provided without a schema
|
||||
table = schema
|
||||
schema = nil
|
||||
end
|
||||
|
||||
tables(nil, schema).include? table
|
||||
end
|
||||
|
||||
# Returns an array of indexes for the given table.
|
||||
def indexes(table_name, name = nil)
|
||||
indexes = []
|
||||
current_index = nil
|
||||
result = execute("SHOW KEYS FROM #{quote_table_name(table_name)}", 'SCHEMA')
|
||||
result.each(:symbolize_keys => true, :as => :hash) do |row|
|
||||
if current_index != row[:Key_name]
|
||||
next if row[:Key_name] == PRIMARY # skip the primary key
|
||||
current_index = row[:Key_name]
|
||||
indexes << Mysql2IndexDefinition.new(row[:Table], row[:Key_name], row[:Non_unique] == 0, [], [])
|
||||
end
|
||||
|
||||
indexes.last.columns << row[:Column_name]
|
||||
indexes.last.lengths << row[:Sub_part]
|
||||
end
|
||||
indexes
|
||||
end
|
||||
|
||||
# Returns an array of +Mysql2Column+ objects for the table specified by +table_name+.
|
||||
def columns(table_name, name = nil)
|
||||
sql = "SHOW FIELDS FROM #{quote_table_name(table_name)}"
|
||||
columns = []
|
||||
result = execute(sql, 'SCHEMA')
|
||||
result.each(:symbolize_keys => true, :as => :hash) { |field|
|
||||
columns << Mysql2Column.new(field[:Field], field[:Default], field[:Type], field[:Null] == "YES")
|
||||
}
|
||||
columns
|
||||
end
|
||||
|
||||
def create_table(table_name, options = {})
|
||||
super(table_name, options.reverse_merge(:options => "ENGINE=InnoDB"))
|
||||
end
|
||||
|
||||
# Renames a table.
|
||||
#
|
||||
# Example:
|
||||
# rename_table('octopuses', 'octopi')
|
||||
def rename_table(table_name, new_name)
|
||||
execute "RENAME TABLE #{quote_table_name(table_name)} TO #{quote_table_name(new_name)}"
|
||||
end
|
||||
|
||||
def add_column(table_name, column_name, type, options = {})
|
||||
add_column_sql = "ALTER TABLE #{quote_table_name(table_name)} ADD #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
|
||||
add_column_options!(add_column_sql, options)
|
||||
add_column_position!(add_column_sql, options)
|
||||
execute(add_column_sql)
|
||||
end
|
||||
|
||||
def change_column_default(table_name, column_name, default)
|
||||
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 = {})
|
||||
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)
|
||||
add_column_position!(change_column_sql, options)
|
||||
execute(change_column_sql)
|
||||
end
|
||||
|
||||
def rename_column(table_name, column_name, new_column_name)
|
||||
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
|
||||
|
||||
def add_column_position!(sql, options)
|
||||
if options[:first]
|
||||
sql << " FIRST"
|
||||
elsif options[:after]
|
||||
sql << " AFTER #{quote_column_name(options[:after])}"
|
||||
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)
|
||||
keys = []
|
||||
result = execute("DESCRIBE #{quote_table_name(table)}", 'SCHEMA')
|
||||
result.each(:symbolize_keys => true, :as => :hash) do |row|
|
||||
keys << row[:Field] if row[:Key] == "PRI"
|
||||
end
|
||||
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_modifier(node)
|
||||
Arel::Nodes::Bin.new(node)
|
||||
end
|
||||
|
||||
def limited_update_conditions(where_sql, quoted_table_name, quoted_primary_key)
|
||||
where_sql
|
||||
end
|
||||
|
||||
# In the simple case, MySQL allows us to place JOINs directly into the UPDATE
|
||||
# query. However, this does not allow for LIMIT, OFFSET and ORDER. To support
|
||||
# these, we must use a subquery. However, MySQL is too stupid to create a
|
||||
# temporary table for this automatically, so we have to give it some prompting
|
||||
# in the form of a subsubquery. Ugh!
|
||||
def join_to_update(update, select) #:nodoc:
|
||||
if select.limit || select.offset || select.orders.any?
|
||||
subsubselect = select.clone
|
||||
subsubselect.projections = [update.key]
|
||||
|
||||
subselect = Arel::SelectManager.new(select.engine)
|
||||
subselect.project Arel.sql(update.key.name)
|
||||
subselect.from subsubselect.as('__active_record_temp')
|
||||
|
||||
update.where update.key.in(subselect)
|
||||
else
|
||||
update.table select.source
|
||||
update.wheres = select.constraints
|
||||
end
|
||||
end
|
||||
|
||||
protected
|
||||
def quoted_columns_for_index(column_names, options = {})
|
||||
length = options[:length] if options.is_a?(Hash)
|
||||
|
||||
case length
|
||||
when Hash
|
||||
column_names.map {|name| length[name] ? "#{quote_column_name(name)}(#{length[name]})" : quote_column_name(name) }
|
||||
when Fixnum
|
||||
column_names.map {|name| "#{quote_column_name(name)}(#{length})"}
|
||||
else
|
||||
column_names.map {|name| quote_column_name(name) }
|
||||
end
|
||||
end
|
||||
|
||||
def translate_exception(exception, message)
|
||||
return super unless exception.respond_to?(:error_number)
|
||||
|
||||
case exception.error_number
|
||||
when 1062
|
||||
RecordNotUnique.new(message, exception)
|
||||
when 1452
|
||||
InvalidForeignKey.new(message, exception)
|
||||
else
|
||||
super
|
||||
end
|
||||
end
|
||||
|
||||
private
|
||||
def connect
|
||||
@connection = Mysql2::Client.new(@config)
|
||||
configure_connection
|
||||
end
|
||||
|
||||
def configure_connection
|
||||
@connection.query_options.merge!(:as => :array)
|
||||
def connect
|
||||
@connection = Mysql2::Client.new(@config)
|
||||
configure_connection
|
||||
end
|
||||
|
||||
# By default, MySQL 'where id is null' selects the last inserted id.
|
||||
# Turn this off. http://dev.rubyonrails.org/ticket/6778
|
||||
variable_assignments = ['SQL_AUTO_IS_NULL=0']
|
||||
encoding = @config[:encoding]
|
||||
def configure_connection
|
||||
@connection.query_options.merge!(:as => :array)
|
||||
|
||||
# make sure we set the encoding
|
||||
variable_assignments << "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
|
||||
variable_assignments = ['SQL_AUTO_IS_NULL=0']
|
||||
encoding = @config[:encoding]
|
||||
|
||||
# increase timeout so mysql server doesn't disconnect us
|
||||
wait_timeout = @config[:wait_timeout]
|
||||
wait_timeout = 2592000 unless wait_timeout.is_a?(Fixnum)
|
||||
variable_assignments << "@@wait_timeout = #{wait_timeout}"
|
||||
# make sure we set the encoding
|
||||
variable_assignments << "NAMES '#{encoding}'" if encoding
|
||||
|
||||
execute("SET #{variable_assignments.join(', ')}", :skip_logging)
|
||||
end
|
||||
# increase timeout so mysql server doesn't disconnect us
|
||||
wait_timeout = @config[:wait_timeout]
|
||||
wait_timeout = 2592000 unless wait_timeout.is_a?(Fixnum)
|
||||
variable_assignments << "@@wait_timeout = #{wait_timeout}"
|
||||
|
||||
# Returns an array of record hashes with the column names as keys and
|
||||
# column values as values.
|
||||
def select(sql, name = nil, binds = [])
|
||||
binds = binds.dup
|
||||
exec_query(sql.gsub("\0") { quote(*binds.shift.reverse) }, name).to_a
|
||||
end
|
||||
execute("SET #{variable_assignments.join(', ')}", :skip_logging)
|
||||
end
|
||||
|
||||
def exec_query(sql, name = 'SQL', binds = [])
|
||||
@connection.query_options[:database_timezone] = ActiveRecord::Base.default_timezone
|
||||
|
||||
log(sql, name, binds) do
|
||||
begin
|
||||
result = @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
|
||||
|
||||
ActiveRecord::Result.new(result.fields, result.to_a)
|
||||
end
|
||||
end
|
||||
|
||||
def supports_views?
|
||||
version[0] >= 5
|
||||
end
|
||||
|
||||
def version
|
||||
@version ||= @connection.info[:version].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
|
||||
def version
|
||||
@version ||= @connection.info[:version].scan(/^(\d+)\.(\d+)\.(\d+)/).flatten.map { |v| v.to_i }
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@ -1,6 +1,5 @@
|
||||
require 'active_record/connection_adapters/abstract_adapter'
|
||||
require 'active_support/core_ext/object/blank'
|
||||
require 'set'
|
||||
require 'active_record/connection_adapters/abstract_mysql_adapter'
|
||||
require 'active_support/core_ext/hash/keys'
|
||||
|
||||
gem 'mysql', '~> 2.8.1'
|
||||
require 'mysql'
|
||||
@ -40,92 +39,6 @@ def self.mysql_connection(config) # :nodoc:
|
||||
end
|
||||
|
||||
module ConnectionAdapters
|
||||
class MysqlColumn < Column #:nodoc:
|
||||
class << self
|
||||
def string_to_time(value)
|
||||
return super unless Mysql::Time === value
|
||||
new_time(
|
||||
value.year,
|
||||
value.month,
|
||||
value.day,
|
||||
value.hour,
|
||||
value.minute,
|
||||
value.second,
|
||||
value.second_part)
|
||||
end
|
||||
|
||||
def string_to_dummy_time(v)
|
||||
return super unless Mysql::Time === v
|
||||
new_time(2000, 01, 01, v.hour, v.minute, v.second, v.second_part)
|
||||
end
|
||||
|
||||
def string_to_date(v)
|
||||
return super unless Mysql::Time === v
|
||||
new_date(v.year, v.month, v.day)
|
||||
end
|
||||
end
|
||||
|
||||
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/).
|
||||
#
|
||||
@ -145,61 +58,50 @@ def missing_default_forged_as_empty_string?(default)
|
||||
# * <tt>:sslcapath</tt> - Necessary to use MySQL with an SSL connection.
|
||||
# * <tt>:sslcipher</tt> - Necessary to use MySQL with an SSL connection.
|
||||
#
|
||||
class MysqlAdapter < AbstractAdapter
|
||||
class MysqlAdapter < AbstractMysqlAdapter
|
||||
class Column < AbstractMysqlAdapter::Column #:nodoc:
|
||||
def self.string_to_time(value)
|
||||
return super unless Mysql::Time === value
|
||||
new_time(
|
||||
value.year,
|
||||
value.month,
|
||||
value.day,
|
||||
value.hour,
|
||||
value.minute,
|
||||
value.second,
|
||||
value.second_part)
|
||||
end
|
||||
|
||||
##
|
||||
# :singleton-method:
|
||||
# By default, the MysqlAdapter will consider all columns of type <tt>tinyint(1)</tt>
|
||||
# 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 application.rb file:
|
||||
#
|
||||
# ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans = false
|
||||
cattr_accessor :emulate_booleans
|
||||
self.emulate_booleans = true
|
||||
def self.string_to_dummy_time(v)
|
||||
return super unless Mysql::Time === v
|
||||
new_time(2000, 01, 01, v.hour, v.minute, v.second, v.second_part)
|
||||
end
|
||||
|
||||
def self.string_to_date(v)
|
||||
return super unless Mysql::Time === v
|
||||
new_date(v.year, v.month, v.day)
|
||||
end
|
||||
|
||||
private
|
||||
|
||||
# FIXME: Combine with the mysql2 version and move to abstract adapter
|
||||
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
|
||||
end
|
||||
|
||||
ADAPTER_NAME = 'MySQL'
|
||||
|
||||
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', '0'
|
||||
|
||||
NATIVE_DATABASE_TYPES = {
|
||||
:primary_key => "int(11) DEFAULT NULL auto_increment PRIMARY KEY",
|
||||
: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 = {}, {}
|
||||
super
|
||||
@statements = {}
|
||||
@client_encoding = nil
|
||||
connect
|
||||
end
|
||||
|
||||
def self.visitor_for(pool) # :nodoc:
|
||||
Arel::Visitors::MySQL.new(pool)
|
||||
end
|
||||
|
||||
def adapter_name #:nodoc:
|
||||
ADAPTER_NAME
|
||||
end
|
||||
|
||||
# FIXME: Move to abstract adapter
|
||||
def supports_bulk_alter? #:nodoc:
|
||||
true
|
||||
end
|
||||
@ -210,78 +112,39 @@ def supports_statement_cache?
|
||||
true
|
||||
end
|
||||
|
||||
# Returns true, since this connection adapter supports migrations.
|
||||
def supports_migrations? #:nodoc:
|
||||
true
|
||||
end
|
||||
# HELPER METHODS ===========================================
|
||||
|
||||
# Returns true.
|
||||
def supports_primary_key? #:nodoc:
|
||||
true
|
||||
end
|
||||
|
||||
# Returns true, since this connection adapter supports savepoints.
|
||||
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")
|
||||
def each_hash(result) # :nodoc:
|
||||
if block_given?
|
||||
result.each_hash do |row|
|
||||
row.symbolize_keys!
|
||||
yield row
|
||||
end
|
||||
else
|
||||
super
|
||||
to_enum(:each_hash, result)
|
||||
end
|
||||
end
|
||||
|
||||
def new_column(field, default, type, null) # :nodoc:
|
||||
Column.new(field, default, type, null)
|
||||
end
|
||||
|
||||
def error_number(exception) # :nodoc:
|
||||
exception.errno if exception.respond_to?(:errno)
|
||||
end
|
||||
|
||||
# QUOTING ==================================================
|
||||
|
||||
def type_cast(value, column)
|
||||
return super unless value == true || value == false
|
||||
|
||||
value ? 1 : 0
|
||||
end
|
||||
|
||||
def quote_column_name(name) #:nodoc:
|
||||
@quoted_column_names[name] ||= "`#{name.to_s.gsub('`', '``')}`"
|
||||
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 #: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?
|
||||
@ -425,20 +288,11 @@ def exec_without_stmt(sql, name = 'SQL') # :nodoc:
|
||||
end
|
||||
end
|
||||
|
||||
# Executes an 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:
|
||||
if name == :skip_logging
|
||||
@connection.query(sql)
|
||||
else
|
||||
log(sql, name) { @connection.query(sql) }
|
||||
end
|
||||
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
|
||||
def execute_and_free(sql, name = nil)
|
||||
result = execute(sql, name)
|
||||
ret = yield result
|
||||
result.free
|
||||
ret
|
||||
end
|
||||
|
||||
def insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) #:nodoc:
|
||||
@ -447,11 +301,6 @@ def insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil) #
|
||||
end
|
||||
alias :create :insert_sql
|
||||
|
||||
def update_sql(sql, name = nil) #:nodoc:
|
||||
super
|
||||
@connection.affected_rows
|
||||
end
|
||||
|
||||
def exec_delete(sql, name, binds)
|
||||
log(sql, name, binds) do
|
||||
exec_stmt(sql, name, binds) do |cols, stmt|
|
||||
@ -467,172 +316,8 @@ def begin_db_transaction #:nodoc:
|
||||
# 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
|
||||
|
||||
# In the simple case, MySQL allows us to place JOINs directly into the UPDATE
|
||||
# query. However, this does not allow for LIMIT, OFFSET and ORDER. To support
|
||||
# these, we must use a subquery. However, MySQL is too stupid to create a
|
||||
# temporary table for this automatically, so we have to give it some prompting
|
||||
# in the form of a subsubquery. Ugh!
|
||||
def join_to_update(update, select) #:nodoc:
|
||||
if select.limit || select.offset || select.orders.any?
|
||||
subsubselect = select.clone
|
||||
subsubselect.projections = [update.key]
|
||||
|
||||
subselect = Arel::SelectManager.new(select.engine)
|
||||
subselect.project Arel.sql(update.key.name)
|
||||
subselect.from subsubselect.as('__active_record_temp')
|
||||
|
||||
update.where update.key.in(subselect)
|
||||
else
|
||||
update.table select.source
|
||||
update.wheres = select.constraints
|
||||
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).map do |table|
|
||||
table.delete('Table_type')
|
||||
sql = "SHOW CREATE TABLE #{quote_table_name(table.to_a.first.last)}"
|
||||
exec_without_stmt(sql).first['Create Table'] + ";\n\n"
|
||||
end.join("")
|
||||
end
|
||||
|
||||
# Drops the database specified on the +name+ attribute
|
||||
# and creates it again using the provided +options+.
|
||||
def recreate_database(name, options = {}) #:nodoc:
|
||||
drop_database(name)
|
||||
create_database(name, options)
|
||||
end
|
||||
|
||||
# Create a new MySQL database with optional <tt>:charset</tt> and <tt>:collation</tt>.
|
||||
# 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
|
||||
|
||||
# Drops a MySQL database.
|
||||
#
|
||||
# Example:
|
||||
# drop_database 'sebastian_development'
|
||||
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, database = nil) #:nodoc:
|
||||
result = execute(["SHOW TABLES", database].compact.join(' IN '), 'SCHEMA')
|
||||
tables = result.collect { |field| field[0] }
|
||||
result.free
|
||||
tables
|
||||
end
|
||||
|
||||
def table_exists?(name)
|
||||
return true if super
|
||||
|
||||
name = name.to_s
|
||||
schema, table = name.split('.', 2)
|
||||
|
||||
unless table # A table was provided without a schema
|
||||
table = schema
|
||||
schema = nil
|
||||
end
|
||||
|
||||
tables(nil, schema).include? table
|
||||
end
|
||||
|
||||
# Returns an array of indexes for the given table.
|
||||
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]
|
||||
indexes.last.lengths << row[7]
|
||||
end
|
||||
result.free
|
||||
indexes
|
||||
end
|
||||
|
||||
# Returns an array of +MysqlColumn+ objects for the table specified by +table_name+.
|
||||
def columns(table_name, name = nil)#:nodoc:
|
||||
sql = "SHOW FIELDS FROM #{quote_table_name(table_name)}"
|
||||
result = execute(sql, 'SCHEMA')
|
||||
columns = result.collect { |field| 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
|
||||
|
||||
# Renames a table.
|
||||
#
|
||||
# Example:
|
||||
# rename_table('octopuses', 'octopi')
|
||||
def rename_table(table_name, new_name)
|
||||
execute "RENAME TABLE #{quote_table_name(table_name)} TO #{quote_table_name(new_name)}"
|
||||
end
|
||||
|
||||
def bulk_change_table(table_name, operations) #:nodoc:
|
||||
sqls = operations.map do |command, args|
|
||||
table, arguments = args.shift, args
|
||||
@ -648,177 +333,33 @@ def bulk_change_table(table_name, operations) #:nodoc:
|
||||
execute("ALTER TABLE #{quote_table_name(table_name)} #{sqls}")
|
||||
end
|
||||
|
||||
def add_column(table_name, column_name, type, options = {})
|
||||
execute("ALTER TABLE #{quote_table_name(table_name)} #{add_column_sql(table_name, column_name, type, options)}")
|
||||
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:
|
||||
execute("ALTER TABLE #{quote_table_name(table_name)} #{change_column_sql(table_name, column_name, type, options)}")
|
||||
end
|
||||
|
||||
def rename_column(table_name, column_name, new_column_name) #:nodoc:
|
||||
execute("ALTER TABLE #{quote_table_name(table_name)} #{rename_column_sql(table_name, column_name, new_column_name)}")
|
||||
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
|
||||
|
||||
def add_column_position!(sql, options)
|
||||
if options[:first]
|
||||
sql << " FIRST"
|
||||
elsif options[:after]
|
||||
sql << " AFTER #{quote_column_name(options[:after])}"
|
||||
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)}", 'SCHEMA')
|
||||
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_modifier(node)
|
||||
Arel::Nodes::Bin.new(node)
|
||||
end
|
||||
|
||||
def limited_update_conditions(where_sql, quoted_table_name, quoted_primary_key)
|
||||
where_sql
|
||||
end
|
||||
|
||||
protected
|
||||
def quoted_columns_for_index(column_names, options = {})
|
||||
length = options[:length] if options.is_a?(Hash)
|
||||
|
||||
case length
|
||||
when Hash
|
||||
column_names.map {|name| length[name] ? "#{quote_column_name(name)}(#{length[name]})" : quote_column_name(name) }
|
||||
when Fixnum
|
||||
column_names.map {|name| "#{quote_column_name(name)}(#{length})"}
|
||||
else
|
||||
column_names.map {|name| quote_column_name(name) }
|
||||
end
|
||||
end
|
||||
def remove_column_sql(table_name, *column_names)
|
||||
columns_for_remove(table_name, *column_names).map {|column_name| "DROP #{column_name}" }
|
||||
end
|
||||
alias :remove_columns_sql :remove_column
|
||||
|
||||
def translate_exception(exception, message)
|
||||
return super unless exception.respond_to?(:errno)
|
||||
def add_index_sql(table_name, column_name, options = {})
|
||||
index_name, index_type, index_columns = add_index_options(table_name, column_name, options)
|
||||
"ADD #{index_type} INDEX #{index_name} (#{index_columns})"
|
||||
end
|
||||
|
||||
case exception.errno
|
||||
when 1062
|
||||
RecordNotUnique.new(message, exception)
|
||||
when 1452
|
||||
InvalidForeignKey.new(message, exception)
|
||||
else
|
||||
super
|
||||
end
|
||||
end
|
||||
def remove_index_sql(table_name, options = {})
|
||||
index_name = index_name_for_remove(table_name, options)
|
||||
"DROP INDEX #{index_name}"
|
||||
end
|
||||
|
||||
def add_column_sql(table_name, column_name, type, options = {})
|
||||
add_column_sql = "ADD #{quote_column_name(column_name)} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
|
||||
add_column_options!(add_column_sql, options)
|
||||
add_column_position!(add_column_sql, options)
|
||||
add_column_sql
|
||||
end
|
||||
def add_timestamps_sql(table_name)
|
||||
[add_column_sql(table_name, :created_at, :datetime), add_column_sql(table_name, :updated_at, :datetime)]
|
||||
end
|
||||
|
||||
def remove_column_sql(table_name, *column_names)
|
||||
columns_for_remove(table_name, *column_names).map {|column_name| "DROP #{column_name}" }
|
||||
end
|
||||
alias :remove_columns_sql :remove_column
|
||||
|
||||
def change_column_sql(table_name, column_name, type, options = {})
|
||||
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 = "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)
|
||||
add_column_position!(change_column_sql, options)
|
||||
change_column_sql
|
||||
end
|
||||
|
||||
def rename_column_sql(table_name, column_name, new_column_name)
|
||||
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 = "CHANGE #{quote_column_name(column_name)} #{quote_column_name(new_column_name)} #{current_type}"
|
||||
add_column_options!(rename_column_sql, options)
|
||||
rename_column_sql
|
||||
end
|
||||
|
||||
def add_index_sql(table_name, column_name, options = {})
|
||||
index_name, index_type, index_columns = add_index_options(table_name, column_name, options)
|
||||
"ADD #{index_type} INDEX #{index_name} (#{index_columns})"
|
||||
end
|
||||
|
||||
def remove_index_sql(table_name, options = {})
|
||||
index_name = index_name_for_remove(table_name, options)
|
||||
"DROP INDEX #{index_name}"
|
||||
end
|
||||
|
||||
def add_timestamps_sql(table_name)
|
||||
[add_column_sql(table_name, :created_at, :datetime), add_column_sql(table_name, :updated_at, :datetime)]
|
||||
end
|
||||
|
||||
def remove_timestamps_sql(table_name)
|
||||
[remove_column_sql(table_name, :updated_at), remove_column_sql(table_name, :created_at)]
|
||||
end
|
||||
def remove_timestamps_sql(table_name)
|
||||
[remove_column_sql(table_name, :updated_at), remove_column_sql(table_name, :created_at)]
|
||||
end
|
||||
|
||||
private
|
||||
|
||||
def exec_stmt(sql, name, binds)
|
||||
cache = {}
|
||||
if binds.empty?
|
||||
@ -830,7 +371,6 @@ def exec_stmt(sql, name, binds)
|
||||
stmt = cache[:stmt]
|
||||
end
|
||||
|
||||
|
||||
begin
|
||||
stmt.execute(*binds.map { |col, val| type_cast(val, col) })
|
||||
rescue Mysql::Error => e
|
||||
@ -859,59 +399,48 @@ def exec_stmt(sql, name, binds)
|
||||
result
|
||||
end
|
||||
|
||||
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
|
||||
def connect
|
||||
encoding = @config[:encoding]
|
||||
if encoding
|
||||
@connection.options(Mysql::SET_CHARSET_NAME, encoding) rescue nil
|
||||
end
|
||||
|
||||
def configure_connection
|
||||
encoding = @config[:encoding]
|
||||
execute("SET NAMES '#{encoding}'", :skip_logging) 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", :skip_logging)
|
||||
if @config[:sslca] || @config[:sslkey]
|
||||
@connection.ssl_set(@config[:sslkey], @config[:sslcert], @config[:sslca], @config[:sslcapath], @config[:sslcipher])
|
||||
end
|
||||
|
||||
def select(sql, name = nil, binds = [])
|
||||
@connection.query_with_result = true
|
||||
rows = exec_query(sql, name, binds).to_a
|
||||
@connection.more_results && @connection.next_result # invoking stored procedures with CLIENT_MULTI_RESULTS requires this to tidy up else connection will be dropped
|
||||
rows
|
||||
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]
|
||||
|
||||
def supports_views?
|
||||
version[0] >= 5
|
||||
end
|
||||
@connection.real_connect(*@connection_options)
|
||||
|
||||
# Returns the version of the connected MySQL server.
|
||||
def version
|
||||
@version ||= @connection.server_info.scan(/^(\d+)\.(\d+)\.(\d+)/).flatten.map { |v| v.to_i }
|
||||
end
|
||||
# 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=)
|
||||
|
||||
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
|
||||
configure_connection
|
||||
end
|
||||
|
||||
def configure_connection
|
||||
encoding = @config[:encoding]
|
||||
execute("SET NAMES '#{encoding}'", :skip_logging) 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", :skip_logging)
|
||||
end
|
||||
|
||||
def select(sql, name = nil, binds = [])
|
||||
@connection.query_with_result = true
|
||||
rows = exec_query(sql, name, binds).to_a
|
||||
@connection.more_results && @connection.next_result # invoking stored procedures with CLIENT_MULTI_RESULTS requires this to tidy up else connection will be dropped
|
||||
rows
|
||||
end
|
||||
|
||||
# Returns the version of the connected MySQL server.
|
||||
def version
|
||||
@version ||= @connection.server_info.scan(/^(\d+)\.(\d+)\.(\d+)/).flatten.map { |v| v.to_i }
|
||||
end
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
|
||||
class ActiveSchemaTest < ActiveRecord::TestCase
|
||||
def setup
|
||||
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
|
||||
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter.class_eval do
|
||||
alias_method :execute_without_stub, :execute
|
||||
remove_method :execute
|
||||
def execute(sql, name = nil) return sql end
|
||||
@ -10,7 +10,7 @@ def execute(sql, name = nil) return sql end
|
||||
end
|
||||
|
||||
def teardown
|
||||
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
|
||||
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter.class_eval do
|
||||
remove_method :execute
|
||||
alias_method :execute, :execute_without_stub
|
||||
end
|
||||
@ -99,7 +99,7 @@ def test_remove_timestamps
|
||||
private
|
||||
def with_real_execute
|
||||
#we need to actually modify some data, so we make execute point to the original method
|
||||
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
|
||||
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter.class_eval do
|
||||
alias_method :execute_with_stub, :execute
|
||||
remove_method :execute
|
||||
alias_method :execute, :execute_without_stub
|
||||
@ -107,7 +107,7 @@ def with_real_execute
|
||||
yield
|
||||
ensure
|
||||
#before finishing, we restore the alias to the mock-up method
|
||||
ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do
|
||||
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter.class_eval do
|
||||
remove_method :execute
|
||||
alias_method :execute, :execute_with_stub
|
||||
end
|
||||
|
||||
@ -58,68 +58,68 @@ def test_should_specify_not_null_if_null_option_is_false
|
||||
|
||||
if current_adapter?(:MysqlAdapter)
|
||||
def test_should_set_default_for_mysql_binary_data_types
|
||||
binary_column = MysqlColumn.new("title", "a", "binary(1)")
|
||||
binary_column = MysqlAdapter::Column.new("title", "a", "binary(1)")
|
||||
assert_equal "a", binary_column.default
|
||||
|
||||
varbinary_column = MysqlColumn.new("title", "a", "varbinary(1)")
|
||||
varbinary_column = MysqlAdapter::Column.new("title", "a", "varbinary(1)")
|
||||
assert_equal "a", varbinary_column.default
|
||||
end
|
||||
|
||||
def test_should_not_set_default_for_blob_and_text_data_types
|
||||
assert_raise ArgumentError do
|
||||
MysqlColumn.new("title", "a", "blob")
|
||||
MysqlAdapter::Column.new("title", "a", "blob")
|
||||
end
|
||||
|
||||
assert_raise ArgumentError do
|
||||
MysqlColumn.new("title", "Hello", "text")
|
||||
MysqlAdapter::Column.new("title", "Hello", "text")
|
||||
end
|
||||
|
||||
text_column = MysqlColumn.new("title", nil, "text")
|
||||
text_column = MysqlAdapter::Column.new("title", nil, "text")
|
||||
assert_equal nil, text_column.default
|
||||
|
||||
not_null_text_column = MysqlColumn.new("title", nil, "text", false)
|
||||
not_null_text_column = MysqlAdapter::Column.new("title", nil, "text", false)
|
||||
assert_equal "", not_null_text_column.default
|
||||
end
|
||||
|
||||
def test_has_default_should_return_false_for_blog_and_test_data_types
|
||||
blob_column = MysqlColumn.new("title", nil, "blob")
|
||||
blob_column = MysqlAdapter::Column.new("title", nil, "blob")
|
||||
assert !blob_column.has_default?
|
||||
|
||||
text_column = MysqlColumn.new("title", nil, "text")
|
||||
text_column = MysqlAdapter::Column.new("title", nil, "text")
|
||||
assert !text_column.has_default?
|
||||
end
|
||||
end
|
||||
|
||||
if current_adapter?(:Mysql2Adapter)
|
||||
def test_should_set_default_for_mysql_binary_data_types
|
||||
binary_column = Mysql2Column.new("title", "a", "binary(1)")
|
||||
binary_column = Mysql2Adapter::Column.new("title", "a", "binary(1)")
|
||||
assert_equal "a", binary_column.default
|
||||
|
||||
varbinary_column = Mysql2Column.new("title", "a", "varbinary(1)")
|
||||
varbinary_column = Mysql2Adapter::Column.new("title", "a", "varbinary(1)")
|
||||
assert_equal "a", varbinary_column.default
|
||||
end
|
||||
|
||||
def test_should_not_set_default_for_blob_and_text_data_types
|
||||
assert_raise ArgumentError do
|
||||
Mysql2Column.new("title", "a", "blob")
|
||||
Mysql2Adapter::Column.new("title", "a", "blob")
|
||||
end
|
||||
|
||||
assert_raise ArgumentError do
|
||||
Mysql2Column.new("title", "Hello", "text")
|
||||
Mysql2Adapter::Column.new("title", "Hello", "text")
|
||||
end
|
||||
|
||||
text_column = Mysql2Column.new("title", nil, "text")
|
||||
text_column = Mysql2Adapter::Column.new("title", nil, "text")
|
||||
assert_equal nil, text_column.default
|
||||
|
||||
not_null_text_column = Mysql2Column.new("title", nil, "text", false)
|
||||
not_null_text_column = Mysql2Adapter::Column.new("title", nil, "text", false)
|
||||
assert_equal "", not_null_text_column.default
|
||||
end
|
||||
|
||||
def test_has_default_should_return_false_for_blog_and_test_data_types
|
||||
blob_column = Mysql2Column.new("title", nil, "blob")
|
||||
blob_column = Mysql2Adapter::Column.new("title", nil, "blob")
|
||||
assert !blob_column.has_default?
|
||||
|
||||
text_column = Mysql2Column.new("title", nil, "text")
|
||||
text_column = Mysql2Adapter::Column.new("title", nil, "text")
|
||||
assert !text_column.has_default?
|
||||
end
|
||||
end
|
||||
|
||||
Loading…
Reference in New Issue
Block a user