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
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
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
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
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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