- s.add_dependency('arel', '~> 2.1.3')

-

-activesupport_path = File.expand_path('../../../activesupport/lib', __FILE__)

-$:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path)

-

-activemodel_path = File.expand_path('../../../activemodel/lib', __FILE__)

-$:.unshift(activemodel_path) if File.directory?(activemodel_path) && !$:.include?(activemodel_path)

-

-

- # associations that depend on multiple tables. Note: When this option is used, +find_in_collection+

- # has_many :subscribers, :class_name => "Person", :finder_sql =>

- # 'SELECT DISTINCT people.* ' +

- # 'FROM people p, post_subscriptions ps ' +

- # 'WHERE ps.post_id = #{id} AND ps.person_id = p.id ' +

- # 'ORDER BY p.first_name'

- table_joins.map { |join|

- # Table names + table aliases

- join.left.downcase.scan(

- /join(?:\s+\w+)?\s+(\S+\s+)?#{quoted_name}\son/

- ).size

- }.sum

- def interpolate(sql, record = nil)

- if sql.respond_to?(:to_proc)

- owner.send(:instance_exec, record, &sql)

- else

- sql

- end

- end

-

- def klass

- type = owner[reflection.foreign_type]

- type.presence && type.constantize

- end

-

- owner.connection.insert stmt.to_sql

- owner.connection.delete stmt.to_sql

- return if row[join_part.aliased_primary_key].nil?

- association = join_part.instantiate(row)

- other.target.push(association)

- klass.connection.select_all(scope.arel.to_sql, 'SQL', scope.bind_values)

- # Returns this record's primary key value wrapped in an Array or nil if

- # the record is not persisted? or has just been destroyed.

- persisted? && key ? [key] : nil

- # <tt>ActiveRecord::RecordNotFound</tt> error if they do not return any records,

- # Specifies how the record is loaded by +Marshal+.

- #

- # +_load+ sets an instance variable for each key in the hash it takes as input.

- # Override this method if you require more complex marshalling.

- def _load(data)

- record = allocate

- record.init_with(Marshal.load(data))

- record

- end

-

-

- # The @ignore_default_scope flag is used to prevent an infinite recursion situation where

- # a default scope references a scope which has a default scope which references a scope...

- return if defined?(@ignore_default_scope) && @ignore_default_scope

- @ignore_default_scope = true

-

- default_scope

- default_scopes.inject(relation) do |default_scope, scope|

- if scope.is_a?(Hash)

- default_scope.apply_finder_options(scope)

- elsif !scope.is_a?(Relation) && scope.respond_to?(:call)

- default_scope.merge(scope.call)

- else

- default_scope.merge(scope)

- ensure

- @ignore_default_scope = false

- viz = Arel::Visitors.for(arel_engine)

- viz.accept b

- # Specifies how the record is dumped by +Marshal+.

- #

- # +_dump+ emits a marshalled hash which has been passed to +encode_with+. Override this

- # method if you require more complex marshalling.

- def _dump(level)

- dump = {}

- encode_with(dump)

- Marshal.dump(dump)

- end

-

- clear_timestamp_attributes

-

- # Clear attributes and changed_attributes

- def clear_timestamp_attributes

- all_timestamp_attributes_in_model.each do |attribute_name|

- self[attribute_name] = nil

- changed_attributes.delete(attribute_name)

- end

- end

- @connections = []

- @checked_out = []

- @tables = {}

- ActiveRecord::Base.send(spec.adapter_method, spec.config)

- def select_all(sql, name = nil, binds = [])

- select(sql, name, binds)

- def select_one(sql, name = nil)

- result = select_all(sql, name)

- def select_value(sql, name = nil)

- if result = select_one(sql, name)

- def select_values(sql, name = nil)

- result = select_rows(sql, name)

- def insert(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil, binds = [])

- sql, binds = sql_for_insert(sql, pk, id_value, sequence_name, binds)

- def update(sql, name = nil, binds = [])

- exec_update(sql, name, binds)

- def delete(sql, name = nil, binds = [])

- exec_delete(sql, name, binds)

- def select_all(sql, name = nil, binds = [])

- cache_sql(sql, binds) { super }

-

-# TODO: Autoload these files

-require 'active_record/connection_adapters/column'

-require 'active_record/connection_adapters/abstract/schema_definitions'

-require 'active_record/connection_adapters/abstract/schema_statements'

-require 'active_record/connection_adapters/abstract/database_statements'

-require 'active_record/connection_adapters/abstract/quoting'

-require 'active_record/connection_adapters/abstract/connection_pool'

-require 'active_record/connection_adapters/abstract/connection_specification'

-require 'active_record/connection_adapters/abstract/query_cache'

-require 'active_record/connection_adapters/abstract/database_limits'

-require 'active_record/result'

-# encoding: utf-8

- class Mysql2IndexDefinition < Struct.new(:table, :name, :unique, :columns, :lengths) #:nodoc:

- end

- 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

- 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 Mysql2Adapter.emulate_booleans && field_type.downcase.index(BOOL)

-

- case field_type

- when /enum/i, /set/i then :string

- when /year/i then :integer

- when /bit/i then :binary

- else

- 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

-

- 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 }

- }

- super(connection, logger)

- @connection_options, @config = connection_options, config

- @quoted_column_names, @quoted_table_names = {}, {}

- 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")

- super

- def quote_column_name(name) #:nodoc:

- @quoted_column_names[name] ||= "`#{name}`"

- def quote_table_name(name) #:nodoc:

- @quoted_table_names[name] ||= quote_column_name(name).gsub('.', '`.`')

- def quoted_true

- QUOTED_TRUE

- end

-

- def quoted_false

- QUOTED_FALSE

- end

-

- # REFERENTIAL INTEGRITY ====================================

-

- def disable_referential_integrity(&block) #:nodoc:

- old = select_value("SELECT @@FOREIGN_KEY_CHECKS")

-

- begin

- update("SET FOREIGN_KEY_CHECKS = 0")

- yield

- ensure

- update("SET FOREIGN_KEY_CHECKS = #{old}")

- end

- end

-

- # this is set to true in 2.3, but we don't want it to be

- def requires_reloading?

- false

- end

-

- 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 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)

- # 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)

- def limited_update_conditions(where_sql, quoted_table_name, quoted_primary_key)

- where_sql

-

- 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)

-

- # 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]

-

- # make sure we set the encoding

- variable_assignments << "NAMES '#{encoding}'" if 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}"

-

- execute("SET #{variable_assignments.join(', ')}", :skip_logging)

- end

-

- # 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 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

-require 'active_record/connection_adapters/abstract_adapter'

-require 'active_support/core_ext/object/blank'

-require 'set'

- class MysqlColumn < Column #:nodoc:

- class << self

- def string_to_time(value)

- def string_to_dummy_time(v)

- def string_to_date(v)

- 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

- def has_default?

- return false if sql_type =~ /blob/i || type == :text #mysql forbids defaults on blob and text columns

- super

- end

-

- private

- def simplified_type(field_type)

- return :boolean if MysqlAdapter.emulate_booleans && field_type.downcase.index("tinyint(1)")

- return :string if field_type =~ /enum/i

- super

- end

-

- def extract_limit(sql_type)

- case sql_type

- when /blob|text/i

- case sql_type

- when /tiny/i

- 255

- when /medium/i

- 16777215

- when /long/i

- 2147483647 # mysql only allows 2^31-1, not 2^32-1, somewhat inconsistently with the tiny/medium/normal cases

- else

- super # we could return 65535 here, but we leave it undecorated by default

- end

- when /^bigint/i; 8

- when /^int/i; 4

- when /^mediumint/i; 3

- when /^smallint/i; 2

- when /^tinyint/i; 1

- else

- super

- end

- end

-

- # MySQL misreports NOT NULL column default when none is given.

- # We can't detect this for columns which may have a legitimate ''

- # default (string) but we can for others (integer, datetime, boolean,

- # and the rest).

- #

- # Test whether the column has default '', is not null, and is not

- # a type allowing default ''.

- def missing_default_forged_as_empty_string?(default)

- type != :string && !null && default == ''

- end

- end

-

- # The MySQL adapter will work with both Ruby/MySQL, which is a Ruby-based MySQL adapter that comes bundled with Active Record, and with

- # the faster C-based MySQL/Ruby adapter (available both as a gem and from http://www.tmtm.org/en/mysql/ruby/).

- #

- # Options:

- #

- # * <tt>:host</tt> - Defaults to "localhost".

- # * <tt>:port</tt> - Defaults to 3306.

- # * <tt>:socket</tt> - Defaults to "/tmp/mysql.sock".

- # * <tt>:username</tt> - Defaults to "root"

- # * <tt>:password</tt> - Defaults to nothing.

- # * <tt>:database</tt> - The name of the database. No default, must be provided.

- # * <tt>:encoding</tt> - (Optional) Sets the client encoding by executing "SET NAMES <encoding>" after connection.

- # * <tt>:reconnect</tt> - Defaults to false (See MySQL documentation: http://dev.mysql.com/doc/refman/5.0/en/auto-reconnect.html).

- # * <tt>:sslca</tt> - Necessary to use MySQL with an SSL connection.

- # * <tt>:sslkey</tt> - Necessary to use MySQL with an SSL connection.

- # * <tt>:sslcert</tt> - Necessary to use MySQL with an SSL connection.

- # * <tt>:sslcapath</tt> - Necessary to use MySQL with an SSL connection.

- # * <tt>:sslcipher</tt> - Necessary to use MySQL with an SSL connection.

- #

- class MysqlAdapter < AbstractAdapter

-

- ##

- # :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

-

- 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 }

- }

-

- super(connection, logger)

- @connection_options, @config = connection_options, config

- @quoted_column_names, @quoted_table_names = {}, {}

- def adapter_name #:nodoc:

- ADAPTER_NAME

- end

-

- def supports_bulk_alter? #:nodoc:

- true

- end

-

- # Returns true, since this connection adapter supports migrations.

- def supports_migrations? #:nodoc:

- true

- end

- # Returns true.

- def supports_primary_key? #:nodoc:

- true

- # Returns true, since this connection adapter supports savepoints.

- def supports_savepoints? #:nodoc:

- true

- def native_database_types #:nodoc:

- NATIVE_DATABASE_TYPES

-

- def quote(value, column = nil)

- if value.kind_of?(String) && column && column.type == :binary && column.class.respond_to?(:string_to_binary)

- s = column.class.string_to_binary(value).unpack("H*")[0]

- "x'#{s}'"

- elsif value.kind_of?(BigDecimal)

- value.to_s("F")

- else

- super

- end

- end

-

- def quote_column_name(name) #:nodoc:

- @quoted_column_names[name] ||= "`#{name}`"

- end

-

- def quote_table_name(name) #:nodoc:

- @quoted_table_names[name] ||= quote_column_name(name).gsub('.', '`.`')

- end

-

- def 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

-

- # 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 update_sql(sql, name = nil) #:nodoc:

- super

- @connection.affected_rows

- 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

-

- # 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

- method = :"#{command}_sql"

-

- if respond_to?(method)

- send(method, table, *arguments)

- else

- raise "Unknown method called : #{method}(#{arguments.inspect})"

- end

- end.flatten.join(", ")

-

- 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 translate_exception(exception, message)

- return super unless exception.respond_to?(:errno)

-

- case exception.errno

- when 1062

- 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 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 connect

- encoding = @config[:encoding]

- if encoding

- @connection.options(Mysql::SET_CHARSET_NAME, encoding) rescue nil

- end

-

- if @config[:sslca] || @config[:sslkey]

- @connection.ssl_set(@config[:sslkey], @config[:sslcert], @config[:sslca], @config[:sslcapath], @config[:sslcipher])

- end

-

- @connection.options(Mysql::OPT_CONNECT_TIMEOUT, @config[:connect_timeout]) if @config[:connect_timeout]

- @connection.options(Mysql::OPT_READ_TIMEOUT, @config[:read_timeout]) if @config[:read_timeout]

- @connection.options(Mysql::OPT_WRITE_TIMEOUT, @config[:write_timeout]) if @config[:write_timeout]

- @connection.real_connect(*@connection_options)

- # reconnect must be set after real_connect is called, because real_connect sets it to false internally

- @connection.reconnect = !!@config[:reconnect] if @connection.respond_to?(:reconnect=)

- configure_connection

- end

- def configure_connection

- encoding = @config[:encoding]

- execute("SET NAMES '#{encoding}'", :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

- def supports_views?

- version[0] >= 5

- 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

- 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 self.extract_schema_and_table(name)

- %Q("#{name}")

- def type_cast(value, column) # :nodoc:

- return super unless BigDecimal === value

- value.to_f

- @connection.transaction

- @connection.commit

- @connection.rollback

- connection.update stmt.to_sql

- # <tt>locking_enabled?</tt> at this point as

- affected_rows = connection.update stmt.to_sql

- Base.connection.select_values(table.project(table['version']).to_sql).map{ |v| v.to_i }.sort

- Base.connection.delete stmt.to_sql

- Base.connection.insert stmt.to_sql

- observer.send(callback, self, &block)

- klass.connection.update stmt.to_sql

- ActiveRecord::Base.connection.create_database(config['database'], creation_options)

- im.to_sql,

- eager_loading? ? find_with_associations : @klass.find_by_sql(arel.to_sql, @bind_values)

- eager_loading? ? find_with_associations : @klass.find_by_sql(arel.to_sql, @bind_values)

- stmt = arel.compile_update(Arel.sql(@klass.send(:sanitize_sql_for_assignment, updates)))

- if limit = arel.limit

- stmt.take limit

- stmt.order(*arel.orders)

- stmt.key = table[primary_key]

- @klass.connection.update stmt.to_sql, 'SQL', bind_values

- affected = @klass.connection.delete(

- statement.to_sql, 'SQL', bind_values)

- @to_sql ||= arel.to_sql

- type_cast_calculated_value(@klass.connection.select_value(query_builder.to_sql), column_for(column_name), operation)

- calculated_data = @klass.connection.select_all(relation.to_sql)

-

- connection.select_value(relation.to_sql, "#{name} Exists") ? true : false

- rows = connection.select_all(relation.to_sql, 'SQL', relation.bind_values)

- value.select_values = [value.klass.arel_table['id']] if value.select_values.empty?

- join_nodes = buckets['join_node'] || []

- join_list = custom_join_ast(manager, string_joins)

- join_nodes.each do |join|

- join_dependency.alias_tracker.aliased_name_for(join.left.name.downcase)

- end

-

- manager.join_sources.concat join_nodes.uniq

-

- ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do

- ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do

- ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do

- ActiveRecord::ConnectionAdapters::MysqlAdapter.class_eval do

- def test_extract_schema_and_table

- {

- %(table_name) => [nil,'table_name'],

- %("table.name") => [nil,'table.name'],

- %(schema.table_name) => %w{schema table_name},

- %("schema".table_name) => %w{schema table_name},

- %(schema."table_name") => %w{schema table_name},

- %("schema"."table_name") => %w{schema table_name},

- %("even spaces".table) => ['even spaces','table'],

- %(schema."table.name") => ['schema', 'table.name']

- }.each do |given, expect|

- assert_equal expect, ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::Utils.extract_schema_and_table(given)

- end

- end

-

- david = Marshal.load(Marshal.dump(david))

- david = Marshal.load(Marshal.dump(david))

- Category.where('comments.id' => comments(:more_greetings).id).order('comments.id'),

- def test_use_table_engine_for_quoting_where

- relation = Topic.where(Topic.arel_table[:id].eq(1))

- engine = relation.table.engine

-

- fakepool = Class.new(Struct.new(:spec)) {

- def with_connection; yield self; end

- def connection_pool; self; end

- def table_exists?(name); false; end

- def quote_table_name(*args); raise "lol quote_table_name"; end

- }

-

- relation.table.engine = fakepool.new(engine.connection_pool.spec)

-

- error = assert_raises(RuntimeError) { relation.to_a }

- assert_match('lol', error.message)

- ensure

- relation.table.engine = engine

- end

-

- actual = Marshal.load(Marshal.dump(expected))

- c = Account.select("MIN(credit_limit) AS min_credit_limit").group(:firm_id).having("min_credit_limit > 50").sum(:credit_limit)

- binary_column = MysqlColumn.new("title", "a", "binary(1)")

- varbinary_column = MysqlColumn.new("title", "a", "varbinary(1)")

- MysqlColumn.new("title", "a", "blob")

- MysqlColumn.new("title", "Hello", "text")

- text_column = MysqlColumn.new("title", nil, "text")

- not_null_text_column = MysqlColumn.new("title", nil, "text", false)

- blob_column = MysqlColumn.new("title", nil, "blob")

- text_column = MysqlColumn.new("title", nil, "text")

- binary_column = Mysql2Column.new("title", "a", "binary(1)")

- varbinary_column = Mysql2Column.new("title", "a", "varbinary(1)")

- Mysql2Column.new("title", "a", "blob")

- Mysql2Column.new("title", "Hello", "text")

- text_column = Mysql2Column.new("title", nil, "text")

- not_null_text_column = Mysql2Column.new("title", nil, "text", false)

- blob_column = Mysql2Column.new("title", nil, "blob")

- text_column = Mysql2Column.new("title", nil, "text")

- assert_match '(just a test...)', Developer.scoped.arel.to_sql

- assert_match '(salary = 80000)', devs.arel.to_sql

- assert_match "(name = 'David') AND (salary = 80000)", devs.arel.to_sql

- assert_match "(salary = 80000) AND (name = 'David')", devs.arel.to_sql

- assert_equal nil, topic.to_key

-end \ No newline at end of file

- assert_match '(salary = 80000)', devs.arel.to_sql