class ActiveRecord::ConnectionAdapters::Mysql2Adapter
Constants
- ADAPTER_NAME
- ER_BAD_DB_ERROR
Public Class Methods
database_exists?(config)
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 56 def self.database_exists?(config) !!ActiveRecord::Base.mysql2_connection(config) rescue ActiveRecord::NoDatabaseError false end
new(connection, logger, connection_options, config)
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Calls superclass method
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter::new
# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 50 def initialize(connection, logger, connection_options, config) superclass_config = config.reverse_merge(prepared_statements: false) super(connection, logger, connection_options, superclass_config) configure_connection end
new_client(config)
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 39 def new_client(config) Mysql2::Client.new(config) rescue Mysql2::Error => error if error.error_number == ConnectionAdapters::Mysql2Adapter::ER_BAD_DB_ERROR raise ActiveRecord::NoDatabaseError else raise ActiveRecord::ConnectionNotEstablished, error.message end end
Public Instance Methods
active?()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 112 def active? @connection.ping end
disconnect!()
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Disconnects from the database if already connected. Otherwise, this method does nothing.
Calls superclass method
ActiveRecord::ConnectionAdapters::AbstractAdapter#disconnect!
# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 125 def disconnect! super @connection.close end
error_number(exception)
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 94 def error_number(exception) exception.error_number if exception.respond_to?(:error_number) end
quote_string(string)
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 102 def quote_string(string) @connection.escape(string) rescue Mysql2::Error => error raise translate_exception(error, message: error.message, sql: "<escape>", binds: []) end
reconnect!()
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Calls superclass method
ActiveRecord::ConnectionAdapters::AbstractAdapter#reconnect!
# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 116 def reconnect! super disconnect! connect end
Also aliased as: reset!
supports_comments?()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 66 def supports_comments? true end
supports_comments_in_create?()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 70 def supports_comments_in_create? true end
supports_json?()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 62 def supports_json? !mariadb? && database_version >= "5.7.8" end
supports_lazy_transactions?()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 78 def supports_lazy_transactions? true end
supports_savepoints?()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 74 def supports_savepoints? true end
Private Instance Methods
configure_connection()
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Calls superclass method
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter#configure_connection
# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 142 def configure_connection @connection.query_options[:as] = :array super end
connect()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 137 def connect @connection = self.class.new_client(@config) configure_connection end
full_version()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 147 def full_version schema_cache.database_version.full_version_string end
get_full_version()
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# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 151 def get_full_version @connection.server_info[:version] end
translate_exception(exception, message:, sql:, binds:)
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Calls superclass method
ActiveRecord::ConnectionAdapters::AbstractMysqlAdapter#translate_exception
# File lib/active_record/connection_adapters/mysql2_adapter.rb, line 155 def translate_exception(exception, message:, sql:, binds:) if exception.is_a?(Mysql2::Error::TimeoutError) && !exception.error_number ActiveRecord::AdapterTimeout.new(message, sql: sql, binds: binds) else super end end