Files

Needle::Registry

Registry is a specialization of Container, with additional functionality for bootstrapping basic services into a new registry. It also supports a define! method for easily registering new services.

Usage:

require 'needle'

registry = Needle::Registry.new
registry.register( :foo ) { Foo.new }
registry.register( :bar ) { |c| Bar.new( c.foo ) }

bar = registry.bar

Public Class Methods

define( *parms, &block ) click to toggle source

Instantiate a new Registry (via new) and immediately invoke define using the given block.

Usage:

registry = Needle::Registry.define do |b|
  b.add { Adder.new }
  ...
end

adder = registry.add
# File lib/needle/registry.rb, line 74
def self.define( *parms, &block )
  raise NeedleError, "needs a block" if block.nil?
  new( *parms ) { |reg| reg.define( &block ) }
end
define!( *parms, &block ) click to toggle source

Instantiate a new Registry (via new) and immediately invoke define! using the given block.

Usage:

registry = Needle::Registry.define! do
  add { Adder.new }
  ...
end

adder = registry.add
# File lib/needle/registry.rb, line 58
def self.define!( *parms, &block )
  raise NeedleError, "needs a block" if block.nil?
  new( *parms ) { |reg| reg.define!( &block ) }
end
new( opts={} ) click to toggle source

Instantiate a new Registry. The options hash may include the following keys:

:logs

options used to initialize the logger factory. The value to this key should be another hash.

:parent

The parent container of this registry.

:name

The name of this registry.

If a block is given, the constructed registry instance is yielded to it.

Usage:

registry = Needle::Registry.new

or

registry = Needle::Registry.new do |reg|
  reg.register( :add ) { Adder.new }
end

or

registry = Needle::Registry.new(
  :logs => { :filename => "/dev/null" }
)
# File lib/needle/registry.rb, line 104
def initialize( opts={} )
  super( opts[:parent], opts[:name] )
  bootstrap( opts ) if parent.nil?
  yield( self ) if block_given?
end

Public Instance Methods

fullname() click to toggle source

Returns nil, unless the registry has a parent, in which case it acts like Container#fullname. Registries are usually unnamed containers.

# File lib/needle/registry.rb, line 112
def fullname
  parent ? super : nil
end

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