Mercurial > pub > Impl
annotate Lib/IMPL/Object/Singleton.pm @ 250:129e48bb5afb
DOM refactoring
ObjectToDOM methods are virtual
QueryToDOM uses inflators
Fixed transform for the complex values in the ObjectToDOM
QueryToDOM doesn't allow to use complex values (HASHes) as values for nodes (overpost problem)
| author | sergey |
|---|---|
| date | Wed, 07 Nov 2012 04:17:53 +0400 |
| parents | 4d0e1962161c |
| children | 0f59b2de72af |
| rev | line source |
|---|---|
| 49 | 1 package IMPL::Object::Singleton; |
| 2 use strict; | |
| 3 use warnings; | |
| 4 | |
| 5 my %instances; | |
| 6 | |
| 143 | 7 sub CTOR { |
| 194 | 8 die new IMPL::InvalidOperationException("Only one instance of the singleton can be created",ref $_[0], $instances{ref $_[0]}) if $instances{ref $_[0]}; |
| 9 $instances{ref $_[0]} = $_[0]; | |
| 143 | 10 } |
| 11 | |
| 49 | 12 sub instance { |
|
144
b56ebc31bf18
Empty nodes no more created while transforming a post request to the DOM document
wizard
parents:
143
diff
changeset
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13 $instances{$_[0]} |
| 49 | 14 } |
| 15 | |
| 16 1; | |
| 17 | |
| 18 __END__ | |
| 19 | |
| 20 =pod | |
| 21 | |
| 22 =head1 SYNOPSIS | |
| 23 | |
| 88 | 24 =begin code |
| 25 | |
| 49 | 26 package Foo; |
| 27 | |
| 166 | 28 use parent qw(IMPL::Object IMPL::Object::Singleton); |
| 49 | 29 |
| 30 #.... | |
| 31 | |
| 32 Foo->isnatnce->some_work(); | |
| 33 | |
| 34 Foo->isnatnce->get_result(); | |
| 35 | |
| 88 | 36 =end code |
| 37 | |
| 49 | 38 =head1 DESCRIPTION |
| 39 | |
| 180 | 40 Реализует шаблон Singleton |
| 49 | 41 |
| 42 =head1 MEMBERS | |
| 43 | |
| 44 =head2 OPERATORS | |
| 45 | |
| 46 =list | |
| 47 | |
| 48 =item C<instance CLASS(@params)> | |
| 49 | |
| 180 | 50 Создает или возвращает экземпляр класса, если экземляр не существует, то он создается с параметрами C<@params>. |
| 49 | 51 |
| 52 =over | |
| 53 | |
| 54 =cut |