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Class: Mysql2::EM::Client

Relationships & Source Files
Namespace Children
Modules:
Watcher
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::Mysql2::Client
Instance Chain:
self, ::Mysql2::Client
Inherits: Mysql2::Client
Defined in: lib/mysql2/em.rb

Class Method Summary

::Mysql2::Client - Inherited

.default_query_options,
.escape

Escape string so that it may be used in a SQL statement.
.info

Returns a string that represents the client library version.
.new, .local_offset

Instance Attribute Summary

::Mysql2::Client - Inherited

#automatic_close=

Set this to false to leave the connection open after it is garbage collected.
#automatic_close?, #closed?,
#more_results?

Returns true or false if there are more results to process.
#query_options, #read_timeout,
#reconnect=

Enable or disable the automatic reconnect behavior of libmysql.
#charset_name=, #connect_timeout=, #default_auth=, #default_file=, #default_group=, #enable_cleartext_plugin=, #get_server_public_key=, #init_command=, #local_infile=, #read_timeout=, #secure_auth=, #ssl_mode=, #write_timeout=

Instance Method Summary

::Mysql2::Client - Inherited

#abandon_results!

When using MULTI_STATEMENTS support, calling this will throw away any unprocessed results as fast as it can in order to put the connection back into a state where queries can be issued again.
#affected_rows

returns the number of rows changed, deleted, or inserted by the last statement if it was an UPDATE, DELETE, or INSERT.
#async_result

Returns the result for the last async issued query.
#close

Immediately disconnect from the server; normally the garbage collector will disconnect automatically when a connection is no longer needed.
#encoding

Returns the encoding set on the client.
#escape

Escape string so that it may be used in a SQL statement.
#find_default_ca_path

Find any default system CA paths to handle system roots by default if stricter validation is requested and no path is provide.
#info,
#last_id

Returns the value generated for an AUTO_INCREMENT column by the previous INSERT or UPDATE statement.
#next_result

Fetch the next result set from the server.
#parse_connect_attrs

Set default program_name in performance_schema.session_connect_attrs and performance_schema.session_account_connect_attrs.
#parse_flags_array, #parse_ssl_mode,
#ping

Checks whether the connection to the server is working.
#prepare

Create a new prepared statement.
#query, #query_info, #query_info_string,
#select_db

Causes the database specified by name to become the default (current) database on the connection specified by mysql.
#server_info

Returns a string that represents the server version number.
#session_track

Returns information about changes to the session state on the server.
#set_server_option

Enables or disables an option for the connection.
#socket, #ssl_cipher,
#store_result

Return the next result object from a query which yielded multiple result sets.
#thread_id

Returns the thread ID of the current connection.
#warning_count,
#_query

Query the database with sql, with optional options.
#connect, #initialize_ext, #ssl_set

Constructor Details

This class inherits a constructor from Mysql2::Client

Instance Method Details

#close(*args)

[ GitHub ] 

  


# File 'lib/mysql2/em.rb', line 34



def close(*args)
  @watch.detach if @watch && @watch.watching?

  super(*args)
end


  








  

    #query(sql, opts = {})  
  

  [ GitHub ]


  

  


# File 'lib/mysql2/em.rb', line 40



def query(sql, opts = {})
  if ::EM.reactor_running?
    super(sql, opts.merge(async: true))
    deferable = ::EM::DefaultDeferrable.new
    @watch = ::EM.watch(socket, Watcher, self, deferable)
    @watch.notify_readable = true
    deferable
  else
    super(sql, opts)
  end
end