Class Sequel::ADO::Database
In: lib/sequel/adapters/ado.rb
Parent: Sequel::Database

Methods

connect   do   execute   new  

Constants

DISCONNECT_ERROR_RE = /Communication link failure/
CommandTimeout = opts[:command_timeout] if opts[:command_timeout]
Provider = opts[:provider] if opts[:provider]

Public Class methods

new(opts)

[Source]

    # File lib/sequel/adapters/ado.rb, line 11
11:       def initialize(opts)
12:         super
13:         case @opts[:conn_string]
14:         when /Microsoft\.(Jet|ACE)\.OLEDB/io
15:           Sequel.ts_require 'adapters/shared/access'
16:           extend Sequel::Access::DatabaseMethods
17:           extend_datasets(Sequel::Access::DatasetMethods)
18:         else
19:           @opts[:driver] ||= 'SQL Server'
20:           case @opts[:driver]
21:           when 'SQL Server'
22:             Sequel.ts_require 'adapters/ado/mssql'
23:             extend Sequel::ADO::MSSQL::DatabaseMethods
24:             @dataset_class = ADO::MSSQL::Dataset
25:             set_mssql_unicode_strings
26:           end
27:         end
28:       end

Public Instance methods

connect(server)

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

:command_timeout :Sets the time in seconds to wait while attempting to execute a command before cancelling the attempt and generating an error. Specifically, it sets the ADO CommandTimeout property. If this property is not set, the default of 30 seconds is used.
:driver :The driver to use in the ADO connection string. If not provided, a default of "SQL Server" is used.
:conn_string :The full ADO connection string. If this is provided, the usual options are ignored.
:provider :Sets the Provider of this ADO connection (for example, "SQLOLEDB"). If you don‘t specify a provider, the default one used by WIN32OLE has major problems, such as creating a new native database connection for every query, which breaks things such as temporary tables.

Pay special attention to the :provider option, as without specifying a provider, many things will be broken. The SQLNCLI10 provider appears to work well if you are connecting to Microsoft SQL Server, but it is not the default as that would break backwards compatability.

[Source]

    # File lib/sequel/adapters/ado.rb, line 50
50:       def connect(server)
51:         opts = server_opts(server)
52:         s = opts[:conn_string] || "driver=#{opts[:driver]};server=#{opts[:host]};database=#{opts[:database]}#{";uid=#{opts[:user]};pwd=#{opts[:password]}" if opts[:user]}"
53:         handle = WIN32OLE.new('ADODB.Connection')
54:         handle.CommandTimeout = opts[:command_timeout] if opts[:command_timeout]
55:         handle.Provider = opts[:provider] if opts[:provider]
56:         handle.Open(s)
57:         handle
58:       end
do(sql, opts={})

Alias for execute

execute(sql, opts={}) {|r| ...}

[Source]

    # File lib/sequel/adapters/ado.rb, line 60
60:       def execute(sql, opts={})
61:         synchronize(opts[:server]) do |conn|
62:           begin
63:             r = log_yield(sql){conn.Execute(sql)}
64:             yield(r) if block_given?
65:           rescue ::WIN32OLERuntimeError => e
66:             raise_error(e)
67:           end
68:         end
69:         nil
70:       end

[Validate]