Class: Sequel::Mysql2::Database

Inherits:
Database show all
Includes:
Sequel::MySQL::DatabaseMethods, Sequel::MySQL::PreparedStatements::DatabaseMethods
Defined in:
lib/sequel/adapters/mysql2.rb

Overview

Database class for MySQL databases used with Sequel.

Constant Summary collapse

DatasetClass = 
self

Constants included from Sequel::MySQL::PreparedStatements::DatabaseMethods

Sequel::MySQL::PreparedStatements::DatabaseMethods::MYSQL_DATABASE_DISCONNECT_ERRORS

Constants included from Sequel::MySQL::DatabaseMethods

Sequel::MySQL::DatabaseMethods::AUTO_INCREMENT, Sequel::MySQL::DatabaseMethods::CAST_TYPES, Sequel::MySQL::DatabaseMethods::COLUMN_DEFINITION_ORDER, Sequel::MySQL::DatabaseMethods::MYSQL_TIMESTAMP_RE, Sequel::MySQL::DatabaseMethods::PRIMARY

Constants inherited from Database

Database::ADAPTERS, Database::AUTOINCREMENT, Database::COLUMN_DEFINITION_ORDER, Database::COLUMN_SCHEMA_DATETIME_TYPES, Database::COLUMN_SCHEMA_STRING_TYPES, Database::COMBINABLE_ALTER_TABLE_OPS, Database::COMMA_SEPARATOR, Database::CURRENT_TIMESTAMP_RE, Database::DEFAULT_DATABASE_ERROR_REGEXPS, Database::DEFAULT_JOIN_TABLE_COLUMN_OPTIONS, Database::DEFAULT_STRING_COLUMN_SIZE, Database::EXTENSIONS, Database::NOT_NULL, Database::NULL, Database::OPTS, Database::PRIMARY_KEY, Database::SCHEMA_TYPE_CLASSES, Database::SQL_BEGIN, Database::SQL_COMMIT, Database::SQL_RELEASE_SAVEPOINT, Database::SQL_ROLLBACK, Database::SQL_ROLLBACK_TO_SAVEPOINT, Database::SQL_SAVEPOINT, Database::STRING_DEFAULT_RE, Database::TEMPORARY, Database::TRANSACTION_BEGIN, Database::TRANSACTION_COMMIT, Database::TRANSACTION_ISOLATION_LEVELS, Database::TRANSACTION_ROLLBACK, Database::UNDERSCORE, Database::UNIQUE, Database::UNSIGNED

Instance Attribute Summary collapse

Attributes inherited from Database

#cache_schema, #dataset_class, #default_string_column_size, #identifier_input_method, #identifier_output_method, #log_warn_duration, #loggers, #opts, #pool, #prepared_statements, #sql_log_level, #timezone, #transaction_isolation_level

Instance Method Summary collapse

Methods included from Sequel::MySQL::PreparedStatements::DatabaseMethods

#call_sproc, #execute

Methods included from Sequel::MySQL::DatabaseMethods

#cast_type_literal, #commit_prepared_transaction, #database_type, #foreign_key_list, #global_index_namespace?, #indexes, #rollback_prepared_transaction, #supports_create_table_if_not_exists?, #supports_prepared_transactions?, #supports_savepoints?, #supports_savepoints_in_prepared_transactions?, #supports_timestamp_usecs?, #supports_transaction_isolation_levels?, #tables, #use, #views

Methods included from Database::ResetIdentifierMangling

#extended

Methods inherited from Database

#<<, #[], adapter_class, adapter_scheme, #adapter_scheme, #add_column, #add_index, #add_servers, #after_commit, after_initialize, #after_rollback, #alter_table, #alter_table_generator, #call, #cast_type_literal, connect, #create_join_table, #create_join_table!, #create_join_table?, #create_or_replace_view, #create_table, #create_table!, #create_table?, #create_table_generator, #create_view, #database_type, #dataset, #disconnect, #disconnect_connection, #drop_column, #drop_index, #drop_join_table, #drop_table, #drop_table?, #drop_view, #each_server, #execute_ddl, #extend_datasets, extension, #extension, #fetch, #from, #from_application_timestamp, #get, #global_index_namespace?, #in_transaction?, #initialize, #inspect, #literal, #literal_symbol, #literal_symbol_set, load_adapter, #log_exception, #log_info, #log_yield, #logger=, #prepared_statement, #quote_identifier, #quote_identifiers=, #quote_identifiers?, register_extension, #remove_servers, #rename_column, #rename_table, #run, run_after_initialize, #schema, #schema_type_class, #select, #serial_primary_key_options, #servers, #set_column_default, #set_column_type, #set_prepared_statement, #sharded?, #single_threaded?, #supports_create_table_if_not_exists?, #supports_deferrable_constraints?, #supports_deferrable_foreign_key_constraints?, #supports_drop_table_if_exists?, #supports_foreign_key_parsing?, #supports_index_parsing?, #supports_partial_indexes?, #supports_prepared_transactions?, #supports_savepoints?, #supports_savepoints_in_prepared_transactions?, #supports_schema_parsing?, #supports_table_listing?, #supports_transaction_isolation_levels?, #supports_transactional_ddl?, #supports_view_listing?, #supports_views_with_check_option?, #supports_views_with_local_check_option?, #synchronize, #table_exists?, #test_connection, #to_application_timestamp, #transaction, #typecast_value, #uri, #url, #valid_connection?

Methods included from Sequel::Metaprogramming

#meta_def

Constructor Details

This class inherits a constructor from Sequel::Database

Instance Attribute Details

#convert_tinyint_to_bool ⇒ Object

Whether to convert tinyint columns to bool for this database



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# File 'lib/sequel/adapters/mysql2.rb', line 15

def convert_tinyint_to_bool
  @convert_tinyint_to_bool
end

Instance Method Details

#connect(server) ⇒ Object

Connect to the database. In addition to the usual database options, the following options have effect:

:auto_is_null

Set to true to use MySQL default behavior of having a filter for an autoincrement column equals NULL to return the last inserted row.

:charset

Same as :encoding (:encoding takes precendence)

:encoding

Set all the related character sets for this connection (connection, client, database, server, and results).

The options hash is also passed to mysql2, and can include mysql2 options such as :local_infile.



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# File 'lib/sequel/adapters/mysql2.rb', line 29

def connect(server)
  opts = server_opts(server)
  opts[:host] ||= 'localhost'
  opts[:username] ||= opts.delete(:user)
  opts[:flags] ||= 0
  opts[:flags] |= ::Mysql2::Client::FOUND_ROWS if ::Mysql2::Client.const_defined?(:FOUND_ROWS)
  opts[:encoding] ||= opts[:charset]
  conn = ::Mysql2::Client.new(opts)
  conn.query_options.merge!(:symbolize_keys=>true, :cache_rows=>false)

  sqls = mysql_connection_setting_sqls

  # Set encoding a slightly different way after connecting,
  # in case the READ_DEFAULT_GROUP overrode the provided encoding.
  # Doesn't work across implicit reconnects, but Sequel doesn't turn on
  # that feature.
  if encoding = opts[:encoding]
    sqls.unshift("SET NAMES #{conn.escape(encoding.to_s)}")
  end

  sqls.each{|sql| log_yield(sql){conn.query(sql)}}

  add_prepared_statements_cache(conn)
  conn
end

#execute_dui(sql, opts = OPTS) ⇒ Object

Return the number of matched rows when executing a delete/update statement.



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# File 'lib/sequel/adapters/mysql2.rb', line 56

def execute_dui(sql, opts=OPTS)
  execute(sql, opts){|c| return c.affected_rows}
end

#execute_insert(sql, opts = OPTS) ⇒ Object

Return the last inserted id when executing an insert statement.



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# File 'lib/sequel/adapters/mysql2.rb', line 61

def execute_insert(sql, opts=OPTS)
  execute(sql, opts){|c| return c.last_id}
end

#server_version(server = nil) ⇒ Object

Return the version of the MySQL server to which we are connecting.



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# File 'lib/sequel/adapters/mysql2.rb', line 66

def server_version(server=nil)
  @server_version ||= (synchronize(server){|conn| conn.server_info[:id]} || super)
end