diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb')
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb | 100 |
1 files changed, 48 insertions, 52 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb index 7145dc0692..63e4020113 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb @@ -1,5 +1,7 @@ +require 'active_support/core_ext/module/delegation' + module ActiveRecord - class Base + module Core class ConnectionSpecification #:nodoc: attr_reader :config, :adapter_method def initialize (config, adapter_method) @@ -75,12 +77,6 @@ module ActiveRecord end end - ## - # :singleton-method: - # The connection handler - class_attribute :connection_handler, :instance_writer => false - self.connection_handler = ConnectionAdapters::ConnectionHandler.new - # Returns the connection currently associated with the class. This can # also be used to "borrow" the connection to do database work that isn't # easily done without going straight to SQL. @@ -88,53 +84,53 @@ module ActiveRecord self.class.connection end - # Establishes the connection to the database. Accepts a hash as input where - # the <tt>:adapter</tt> key must be specified with the name of a database adapter (in lower-case) - # example for regular databases (MySQL, Postgresql, etc): - # - # ActiveRecord::Base.establish_connection( - # :adapter => "mysql", - # :host => "localhost", - # :username => "myuser", - # :password => "mypass", - # :database => "somedatabase" - # ) - # - # Example for SQLite database: - # - # ActiveRecord::Base.establish_connection( - # :adapter => "sqlite", - # :database => "path/to/dbfile" - # ) - # - # Also accepts keys as strings (for parsing from YAML for example): - # - # ActiveRecord::Base.establish_connection( - # "adapter" => "sqlite", - # "database" => "path/to/dbfile" - # ) - # - # Or a URL: - # - # ActiveRecord::Base.establish_connection( - # "postgres://myuser:mypass@localhost/somedatabase" - # ) - # - # The exceptions AdapterNotSpecified, AdapterNotFound and ArgumentError - # may be returned on an error. - def self.establish_connection(spec = ENV["DATABASE_URL"]) - resolver = ConnectionSpecification::Resolver.new spec, configurations - spec = resolver.spec - - unless respond_to?(spec.adapter_method) - raise AdapterNotFound, "database configuration specifies nonexistent #{spec.config[:adapter]} adapter" - end + module ClassMethods + # Establishes the connection to the database. Accepts a hash as input where + # the <tt>:adapter</tt> key must be specified with the name of a database adapter (in lower-case) + # example for regular databases (MySQL, Postgresql, etc): + # + # ActiveRecord::Base.establish_connection( + # :adapter => "mysql", + # :host => "localhost", + # :username => "myuser", + # :password => "mypass", + # :database => "somedatabase" + # ) + # + # Example for SQLite database: + # + # ActiveRecord::Base.establish_connection( + # :adapter => "sqlite", + # :database => "path/to/dbfile" + # ) + # + # Also accepts keys as strings (for parsing from YAML for example): + # + # ActiveRecord::Base.establish_connection( + # "adapter" => "sqlite", + # "database" => "path/to/dbfile" + # ) + # + # Or a URL: + # + # ActiveRecord::Base.establish_connection( + # "postgres://myuser:mypass@localhost/somedatabase" + # ) + # + # The exceptions AdapterNotSpecified, AdapterNotFound and ArgumentError + # may be returned on an error. + def establish_connection(spec = ENV["DATABASE_URL"]) + resolver = ConnectionSpecification::Resolver.new spec, configurations + spec = resolver.spec + + unless respond_to?(spec.adapter_method) + raise AdapterNotFound, "database configuration specifies nonexistent #{spec.config[:adapter]} adapter" + end - remove_connection - connection_handler.establish_connection name, spec - end + remove_connection + connection_handler.establish_connection name, spec + end - class << self # Returns the connection currently associated with the class. This can # also be used to "borrow" the connection to do database work unrelated # to any of the specific Active Records. |