annotate Lib/IMPL/Class/Template.pm @ 365:7c621bb95e53

working on the metadata model
author sergey
date Mon, 02 Dec 2013 02:13:12 +0400
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1 package IMPL::Class::Template;
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2 use strict;
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3 use IMPL::lang;
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4 use IMPL::_core::version;
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5
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6 sub makeName {
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7 my ($class,@params) = @_;
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8
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9 $_ =~ s/^.*::(\w+)$/$1/ foreach @params;
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10 return join('',$class,@params);
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11 }
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12
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13 1;
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14
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15 __END__
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16
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17 =pod
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18
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19 =head1 NAME
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20
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21 C<IMPL::Class::Template> базовый класс для шаблонов.
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22
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23 =head1 SYNPOSIS
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24
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25 =begin code
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26
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27 package KeyValuePair;
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28
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29 use IMPL::Class::Property;
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30
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31 use IMPL::template (
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32 parameters => [qw(TKey TValue))],
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33 base => [qw(IMPL::Object IMPL::Object::Autofill)],
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34 declare => sub {
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35 my ($class) = @_;
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36 public $class->CreateProperty(key => prop_get | owner_set, { type => $class->TKey } );
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37 public $class->CreateProperty(value => prop_all, { type => $class->TValue} );
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38
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39 $class->PassThroughArgs;
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40 }
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41 );
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42
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43 BEGIN {
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44 public property id => prop_get | owner_set, { type => 'integer'};
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45 }
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46
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47 __PACKAGE__->PassThroughArgs;
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48
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49 package MyCollection;
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50
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51 use IMPL::Class::Property;
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52
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53 use IMPL::lang;
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54 use IMPL::template(
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55 parameters => [qw(TKey TValue)],
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56 base => [qw(IMPL::Object)],
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57 declare => sub {
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58 my ($class) = @_;
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59 my $item_t = spec KeyValuePair($class->TKey,$class->TValue);
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60
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61 public $class->CreateProperty(items => prop_get | prop_list, { type => $item_t } )
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62
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63 $class->static_accessor( ItemType => $item_t );
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64 }
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65 )
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67 sub Add {
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68 my ($this,$key,$value) = @_;
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69
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70 die new IMPL::ArgumentException( key => "Invalid argument type" ) unless is $key, $this->TKey;
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71 die new IMPL::ArgumentException( value => "Invalid argument type" ) unless is $value, $this->TValue;
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72
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73 $this->items->AddLast( $this->ItemType->new( key => $key, value => $value ) );
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74 }
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75
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76 =end code
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78 =head1 DESCRIPTION
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79
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80 Шаблоны используются для динамической генерации классов. Процесс создания класса
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81 по шаблону называется специализацией, при этом создается новый класс:
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83 =over
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84
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85 =item 1
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86
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87 Обявляется новый пакет с именем, вычисленным из имени и параметров шаблона
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88
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89 =item 2
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91 Формируется массив C<@ISA> для созаднного класса, в который добавляется имя шаблона
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92
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93 =item 3
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94
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95 Формируются методы с именами параметров шаблона, возвращающие реальные значения параметров
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97 =item 4
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98
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99 Вызывается метод для конструирования специализиции
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101 =back
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103 =head1 MEMBERS
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105 =over
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106
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107 =item C<spec(@params)>
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108
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109 Метод, создающий специализацию шаблона. Может быть вызван как оператор.
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111 =back
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112
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113 =cut