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annotate Lib/IMPL/Web/Handler/RestController.pm @ 250:129e48bb5afb

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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 a02b110da931
children 827cf96faa1c
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1 package IMPL::Web::Handler::RestController;
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2 use strict;
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3
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4 use IMPL::Const qw(:prop);
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5 use IMPL::declare {
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6 require => {
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7 Locator => 'IMPL::Web::AutoLocator',
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8 ResourceInterface => 'IMPL::Web::Application::ResourceInterface',
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9 Exception => 'IMPL::Exception',
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10 ArgumentExecption => '-IMPL::InvalidArgumentException',
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11 NotFoundException => 'IMPL::Web::NotFoundException'
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12 },
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13 base => {
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14 'IMPL::Object' => undef,
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15 'IMPL::Object::Autofill' => '@_',
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16 'IMPL::Object::Serializable' => undef
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17 },
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18 props => [
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19 resourceFactory => PROP_RO,
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20 trailingSlash => PROP_RO
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21 ]
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22 };
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23
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24 sub CTOR {
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25 my ($this) = @_;
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26
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27 die ArgumentException->new(resourceFactory => "A web-resource is required")
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28 unless $this->resourceFactory;
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29 #unless eval { $this->resourceFacotry->isa(ResourceInterface) };
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31 }
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32
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33 sub GetResourcePath {
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34 my ($this,$action) = @_;
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35
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36 my $pathInfo = $action->pathInfo;
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37 my @segments;
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38
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39 if (length $pathInfo) {
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40
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41 @segments = split(/\//, $pathInfo, $this->trailingSlash ? -1 : 0);
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42
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43 # remove first segment if it is empty
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44 shift @segments if @segments && length($segments[0]) == 0;
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45
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46 if(@segments) {
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47 my ($obj,$view) = (pop(@segments) =~ m/(.*?)(?:\.(\w+))?$/);
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48 push @segments, $obj;
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49 }
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50
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51 }
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52
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53 return @segments;
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54 }
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55
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56
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57 sub Invoke {
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58 my ($this,$action) = @_;
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59
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60 my $method = $action->requestMethod;
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62 my @segments = $this->GetResourcePath($action);
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63
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64 my $res = $this->resourceFactory->new(
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65 id => 'root',
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66 location => Locator->new(base => $action->application->baseUrl)
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67 );
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68
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69 while(@segments) {
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70 my $id = shift @segments;
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71
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72 $res = $res->FetchChildResource($id);
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73 }
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74
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75 $res = $res->InvokeHttpVerb($method,$action);
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76 }
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77
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78 1;
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79
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80 __END__
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81
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82 =pod
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83
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84 =head1 NAME
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85
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86 C<IMPL::Web::Handler::RestController> - Обрабатывает C<HTTP> запрос передавая
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87 его соответствующему ресурсу.
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88
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89 =head1 SYNOPSIS
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90
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91 Используется в конфигурации приложения как элемент цепочки обработчиков.
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92 Как правило располагается на самом верхнем уровне.
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93
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94 =begin code xml
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95
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96 <handlers type="ARRAY">
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97 <item type="IMPL::Web::Handler::RestController">
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98 <rootResource type="My::App::Web::RootResource"/>
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99 </item>
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100 <item type="IMPL::Web::Handler::JSONView" />
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101 <item type="IMPL::Web::Handler::SecureCookie" />
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102 <item type="IMPL::Web::Handler::ErrorHandler" />
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103 </handlers>
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104
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105 =end code xml
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106
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107
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108 =head1 DESCRIPTION
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109
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110 Использует C<PATH_INFO> для определения нужного ресурса, затем предает
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111 найденному ресурсу управление для обработки запроса.
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112
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113 Если ресурс не найден, то возникает исключение C<IMPL::Web::NotFoundException>.
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114
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115 Для определения нужного ресурса контроллер разбивает C<PATH_INFO> на фрагменты
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116 и использует каждый фрагмент для получения дочернего ресурса начиная с корневого.
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117 Для чего используется метод
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118 C<< IMPL::Web::Application::ResourceInterface->FetchChildResource($childId) >>.
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119
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120 =head1 MEMEBERS
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121
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122 =head2 C<[get]rootResource>
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123
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124 Корневой ресурс приложения, должен быть всегда и реализовывать интерфес ресурса
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125 C<IMPL::Web::Application::ResourceInterface>.
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126
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127 =head2 C<[get]trailingSlash>
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128
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129 Если данная переменная имеет значение C<true>, то слеш в конце пути к ресурсу
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130 будет интерпретироваться, как дочерний ресурс с пустым идентификатором.
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131
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132 =cut