Class ActiveRecord::ConnectionAdapters::Mysql2Adapter < ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 33
def initialize(connection, logger, connection_options, config)
  super
  configure_connection
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 74
def active?
  return false unless @connection
  @connection.ping
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 86
def disconnect!
  unless @connection.nil?
    @connection.close
    @connection = nil
  end
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 58
def error_number(exception)
  exception.error_number if exception.respond_to?(:error_number)
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 244
def exec_delete(sql, name, binds)
  binds = binds.dup

  # Pretend to support bind parameters
  execute sql.gsub("\00"") { quote(*binds.shift.reverse) }, name
  @connection.affected_rows
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 237
def exec_insert(sql, name, binds)
  binds = binds.dup

  # Pretend to support bind parameters
  execute sql.gsub("\00"") { quote(*binds.shift.reverse) }, name
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 217
def exec_query(sql, name = 'SQL', binds = [])
  result = execute(sql, name)
  ActiveRecord::Result.new(result.fields, result.to_a)
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 209
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

  super
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 100
def explain(arel, binds = [])
  sql     = "EXPLAIN #{to_sql(arel)}"
  start   = Time.now
  result  = exec_query(sql, 'EXPLAIN', binds)
  elapsed = Time.now - start

  ExplainPrettyPrinter.new.pp(result, elapsed)
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 231
def insert_sql(sql, name = nil, pk = nil, id_value = nil, sequence_name = nil)
  super
  id_value || @connection.last_id
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 253
def last_inserted_id(result)
  @connection.last_id
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 64
def quote_string(string)
  @connection.escape(string)
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 79
def reconnect!
  disconnect!
  connect
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 93
def reset!
  disconnect!
  connect
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 226
def select(sql, name = nil, binds = [])
  binds = binds.dup
  exec_query(sql.gsub("\00"") { quote(*binds.shift.reverse) }, name).to_a
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 204
def select_rows(sql, name = nil)
  execute(sql, name).to_a
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 68
def substitute_at(column, index)
  Arel.sql "\00""
end

# File activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb, line 38
def supports_explain?
  true
end