Mercurial > pub > Impl
annotate Lib/IMPL/Config/Activator.pm @ 356:97131d500f16
TTView: added identifiers support
| author | cin |
|---|---|
| date | Thu, 17 Oct 2013 17:48:50 +0400 |
| parents | 8088779e539d |
| children |
| rev | line source |
|---|---|
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
1 package IMPL::Config::Activator; |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
2 use strict; |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
3 |
| 293 | 4 use Scalar::Util qw(reftype); |
| 5 use IMPL::lang; | |
| 6 use IMPL::Const qw(:prop); | |
| 7 use IMPL::declare { | |
| 294 | 8 require => { |
| 293 | 9 Loader => 'IMPL::Code::Loader', |
| 10 Exception => 'IMPL::Exception' | |
| 294 | 11 }, |
| 293 | 12 base => [ |
| 13 'IMPL::Object' => undef, | |
| 14 'IMPL::Object::Autofill' => '@_', | |
| 15 'IMPL::Object::PublicSerializable' => undef | |
| 16 ], | |
| 17 props => [ | |
| 18 factory => PROP_RW, | |
| 19 parameters => PROP_RW, | |
| 294 | 20 singleCall => PROP_RW, |
| 21 _object => PROP_RW | |
| 293 | 22 ] |
| 23 }; | |
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
24 |
| 293 | 25 use constant { |
| 294 | 26 SELF_CLASS => __PACKAGE__, |
| 293 | 27 }; |
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
28 |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
29 sub CTOR { |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
30 my $this = shift; |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
31 |
| 293 | 32 die Exception->new("A factory parameter is required") unless $this->factory; |
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
33 |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
34 } |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
35 |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
36 |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
37 sub activate { |
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
38 my $this = shift; |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
39 |
| 294 | 40 unless ($this->_object) { |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
41 my @args; |
|
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
42 |
|
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
43 my $params = $this->parameters; |
| 294 | 44 if (ref $params eq 'HASH') { |
| 194 | 45 while ( my ($key,$value) = each %$params ) { |
| 293 | 46 push @args,$key, is($value,SELF_CLASS) ? $value->activate : $value; |
| 194 | 47 } |
| 294 | 48 } elsif (ref $params eq 'ARRAY') { |
| 293 | 49 push @args, map is($_,SELF_CLASS) ? $_->activate : $_, @$params; |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
50 } else { |
| 293 | 51 push @args, is($params,SELF_CLASS) ? $params->activate : $params; |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
52 } |
|
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
53 |
| 293 | 54 push @args, map is($_,SELF_CLASS) ? $_->activate : $_, @_ if @_; |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
55 |
|
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
56 my $factory = $this->factory; |
| 294 | 57 Loader->default->Require($factory) |
| 58 unless ref($factory); | |
| 59 | |
| 60 my $instance = $factory->new(@args); | |
|
60
b0c068da93ac
Lazy activation for the configuration objects (final concept)
wizard
parents:
59
diff
changeset
|
61 |
| 294 | 62 $this->_object($instance) |
| 63 unless $this->singleCall; | |
| 64 | |
| 65 return $instance; | |
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
66 } else { |
| 294 | 67 return $this->_object; |
|
59
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
68 } |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
69 } |
|
0f3e369553bd
Rewritten property implementation (probably become slower but more flexible)
wizard
parents:
diff
changeset
|
70 |
| 180 | 71 1; |
| 293 | 72 |
| 73 __END__ | |
| 74 | |
| 75 =pod | |
| 76 | |
| 77 =head1 NAME | |
| 78 | |
| 294 | 79 C<IMPL::Config::Activator> - объект, используемый для получения других объектов. |
| 80 | |
| 81 =head1 DESCRIPTION | |
| 82 | |
| 83 Служит дополнительным уровнем абстракции в тех случаях, когда нужный объект | |
| 84 заранее не известен или его создание должно происходить по требованию. | |
| 85 От обычной фабрики отличается также тем, что рассматривает формальные параметры | |
| 86 на наличие активаторов и выполняет их при активации. | |
| 87 | |
| 88 Кроме того можно указать, что процесс активации должен происходить при каждом | |
| 89 обращении. | |
| 293 | 90 |
| 91 =cut |