Class: Sequel::MySQL::Database

Constants

MYSQL_DATABASE_DISCONNECT_ERRORS = /\A(Commands out of sync; you can't run this command now|Can't connect to local MySQL server through socket|MySQL server has gone away)/ Mysql::Error messages that indicate the current connection should be disconnected

Public Instance methods

call_sproc(name, opts={}, &block)

Support stored procedures on MySQL

[Source]

    # File lib/sequel/adapters/mysql.rb, line 69
69:       def call_sproc(name, opts={}, &block)
70:         args = opts[:args] || [] 
71:         execute("CALL #{name}#{args.empty? ? '()' : literal(args)}", opts.merge(:sproc=>false), &block)
72:       end

connect(server)

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)
:compress - Set to false to not compress results from the server
:config_default_group - The default group to read from the in the MySQL config file.
:config_local_infile - If provided, sets the Mysql::OPT_LOCAL_INFILE option on the connection with the given value.
:encoding - Set all the related character sets for this connection (connection, client, database, server, and results).
:socket - Use a unix socket file instead of connecting via TCP/IP.
:timeout - Set the timeout in seconds before the server will disconnect this connection.

[Source]

     # File lib/sequel/adapters/mysql.rb, line 91
 91:       def connect(server)
 92:         opts = server_opts(server)
 93:         conn = Mysql.init
 94:         conn.options(Mysql::READ_DEFAULT_GROUP, opts[:config_default_group] || "client")
 95:         conn.options(Mysql::OPT_LOCAL_INFILE, opts[:config_local_infile]) if opts.has_key?(:config_local_infile)
 96:         if encoding = opts[:encoding] || opts[:charset]
 97:           # Set encoding before connecting so that the mysql driver knows what
 98:           # encoding we want to use, but this can be overridden by READ_DEFAULT_GROUP.
 99:           conn.options(Mysql::SET_CHARSET_NAME, encoding)
100:         end
101:         conn.real_connect(
102:           opts[:host] || 'localhost',
103:           opts[:user],
104:           opts[:password],
105:           opts[:database],
106:           opts[:port],
107:           opts[:socket],
108:           Mysql::CLIENT_MULTI_RESULTS +
109:           Mysql::CLIENT_MULTI_STATEMENTS +
110:           (opts[:compress] == false ? 0 : Mysql::CLIENT_COMPRESS)
111:         )
112:         sqls = []
113:         # Set encoding a slightly different way after connecting,
114:         # in case the READ_DEFAULT_GROUP overrode the provided encoding.
115:         # Doesn't work across implicit reconnects, but Sequel doesn't turn on
116:         # that feature.
117:         sqls << "SET NAMES #{literal(encoding.to_s)}" if encoding
118: 
119:         # increase timeout so mysql server doesn't disconnect us
120:         sqls << "SET @@wait_timeout = #{opts[:timeout] || 2592000}"
121: 
122:         # By default, MySQL 'where id is null' selects the last inserted id
123:         sqls << "SET SQL_AUTO_IS_NULL=0" unless opts[:auto_is_null]
124: 
125:         sqls.each{|sql| log_yield(sql){conn.query(sql)}}
126: 
127:         class << conn
128:           attr_accessor :prepared_statements
129:         end
130:         conn.prepared_statements = {}
131:         conn
132:       end

dataset(opts = nil)

Returns instance of Sequel::MySQL::Dataset with the given options.

[Source]

     # File lib/sequel/adapters/mysql.rb, line 135
135:       def dataset(opts = nil)
136:         MySQL::Dataset.new(self, opts)
137:       end

execute(sql, opts={}, &block)

Executes the given SQL using an available connection, yielding the connection if the block is given.

[Source]

     # File lib/sequel/adapters/mysql.rb, line 141
141:       def execute(sql, opts={}, &block)
142:         if opts[:sproc]
143:           call_sproc(sql, opts, &block)
144:         elsif sql.is_a?(Symbol)
145:           execute_prepared_statement(sql, opts, &block)
146:         else
147:           synchronize(opts[:server]){|conn| _execute(conn, sql, opts, &block)}
148:         end
149:       end

server_version(server=nil)

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

[Source]

     # File lib/sequel/adapters/mysql.rb, line 152
152:       def server_version(server=nil)
153:         @server_version ||= (synchronize(server){|conn| conn.server_version if conn.respond_to?(:server_version)} || super)
154:       end

Methods

Included Modules

Constants

Public Instance methods