annotate Lib/IMPL/Web/Application/RestResource.pm @ 197:6b1dda998839

Added IMPL::declare, IMPL::require, to simplify module definitions IMPL::Transform now admires object inheritance while searching for the transformation Added HTTP some exceptions IMPL::Web::Application::RestResource almost implemented
author sergey
date Thu, 19 Apr 2012 02:10:02 +0400
parents a705e848dcc7
children 2ffe6f661605
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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196
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1 package IMPL::Web::Application::RestResource;
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2 use strict;
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3
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4 use IMPL::lang qw(:declare :constants);
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5 use IMPL::declare {
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6 require => {
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7 ForbiddenException => 'IMPL::Web::ForbiddenException'
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8 },
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9 base => {
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10 'IMPL::Object' => undef
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11 }
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12 };
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13
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14 BEGIN {
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15 public property target => PROP_GET | PROP_OWNERSET;
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16 public property methods => PROP_GET | PROP_OWNERSET;
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17 public property childRegex => PROP_GET | PROP_OWNERSET;
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18 public property list => PROP_GET | PROP_OWNERSET;
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19 public property fetch => PROP_GET | PROP_OWNERSET;
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20 public property insert => PROP_GET | PROP_OWNERSET;
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21 public property update => PROP_GET | PROP_OWNERSET;
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22 public property delete => PROP_GET | PROP_OWNERSET;
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23 }
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24
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25 sub GetHttpImpl {
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26 my($this,$method) = @_;
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27
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28 my %map = (
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29 GET => 'GetImpl',
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30 PUT => 'PutImpl',
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31 POST => 'PostImpl',
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32 DELETE => 'DeleteImpl'
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33 );
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34
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35 return $map{$method};
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36 }
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37
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38 sub InvokeHttpMethod {
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39 my ($this,$method,$child,$action) = @_;
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40
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41 my $impl = $this->GetHttpImpl($method) || 'FallbackImpl';
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42
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43 return $this->$impl($child,$action);
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44 }
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45
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46 sub GetImpl {
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47 my ($this,$id,$action) = @_;
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48
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49 my $rx;
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50 my $method;
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51 if (length $id == 0) {
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52 $method = $this->list;
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53 } elsif ($method = $this->methods->{$id}) {
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54 if (ref $method eq 'HASH' and not $method->{allowGet}) {
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55 die ForbiddenException->new();
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56 }
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57 } elsif($rx = $this->childRegex and $id =~ m/$rx/ ) {
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58 $method = $this->fetch or die ForbiddenException->new();
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59
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60 $method = {
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61 method => $method,
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62 parameters => [qw(id)]
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63 } unless ref $method;
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64
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65 } else {
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66 die ForbiddenException->new();
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67 }
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68
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69 return $this->InvokeMember($method,$id,$action);
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70 }
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71
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72 sub PutImpl {
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73 my ($this,$id,$action) = @_;
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74
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75 my $rx = $this->childRegex;
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76 if ( $rx and $id =~ m/$rx/ and $this->update ) {
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77 my $method = $this->update or die ForbiddenException->new();
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78
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79 $method = {
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80 method => $method,
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81 parameters => [qw(id query)]
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82 } unless ref $method;
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83
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84 return $this->InvokeMember($method,$id,$action);
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85 } else {
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86 die ForbiddenException->new();
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87 }
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88 }
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89
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90 sub PostImpl {
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91 my ($this,$id,$action) = @_;
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92
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93 my $method;
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94
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95 if (length $id == 0) {
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96 $method = $this->insert or die ForbiddenException->new();
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97
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98 $method = {
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99 method => $method,
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100 parameters => [qw(query)]
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101 } unless ref $method;
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102 } elsif ($method = $this->methods->{$id}) {
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103 die ForbiddenException->new() unless ref $method and $method->{allowPost};
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104 } else {
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105 die ForbiddenException->new();
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106 }
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107
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108 return $this->InvokeMemeber($method,$id,$action);
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109 }
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110
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111 sub DeleteImpl {
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112 my ($this,$id,$action) = @_;
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113
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114 my $rx = $this->childRegex;
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115 if ($rx and $id =~ m/$rx/ and my $method = $this->delete) {
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116
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117 $method = {
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118 method => $method,
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119 parameters => [qw(id)]
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120 } unless ref $method;
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121
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122 return $this->InvokeMember($method,$id,$action);
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123 } else {
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124 die ForbiddenException->new();
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125 }
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126 }
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127
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128 sub HttpFallbackImpl {
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129 die ForbiddenException->new();
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130 }
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131
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132 sub InvokeMember {
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133 my ($this,$method,$id,$action) = @_;
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134 }
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135
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136
196
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137 1;
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138
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139 __END__
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140
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141 =pod
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142
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143 =head1 NAME
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144
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145 C<IMPL::Web::Application::RestResource> - ресурс Rest вебсервиса.
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146
197
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147 =head1 SYNOPSIS
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148
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149 =begin text
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150
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151 [REQUEST]
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152 GET /artists
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153
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154 [RESPONSE]
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155 <artists>
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156 <artist id="1">
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157 <name>The Beatles <name/>
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158 </atrist>
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159 <artist id="2">
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160 <name>Bonobo</name>
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161 </artist>
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162 </artists>
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163
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164 [REQUEST]
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165 GET /artists/1/cds?title='Live at BBC'
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166
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167 [RESPONSE]
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168 <cds>
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169 <cd id="14">
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170 <title>Live at BBC 1</title>
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171 </cd>
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172 <cd id="15">
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173 <title>Live at BBC 2</title>
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174 </cd>
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175 </cds>
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176
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177 [REQUEST]
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178 GET /cds/15
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179
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180 [RESPONSE]
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181 <cd id="15">
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182 <title>Live at BBC 2</title>
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183 </cd>
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184
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185 =end text
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186
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187 =begin code
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188
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189 use IMPL::require {
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190 TRes => 'IMPL::Web:Application::RestResource',
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191 DataContext => 'My::App::DataContext'
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192 };
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193
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194 my $cds = TRes->new(
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195 DataContext->Default,
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196 {
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197 methods => {
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198 get => {
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199
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200 },
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201 post => {
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202
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203 }
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204 }
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205 get => 'search',
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206
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207
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208 }
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209 );
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210
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211 =end code
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212
196
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213 =head1 DESCRIPTION
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214
197
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215 Каждый ресурс представляет собой коллекцию и реализует методы C<HTTP> C<GET,POST,PUT,DELETE>.
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216
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217 =head2 HTTP METHODS
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218
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219 =head3 C<GET>
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220
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221 Возвращает коллекцию дочерних ресурсов.
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222
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223 =head3 C<GET {id}>
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224
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225 Возвращает дочерний объект с идентификатором C<id>
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226
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227 =head3 C<GET {method}>
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228
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229 Вызывает метод C<method> и возвращает его результаты. При публикации методов доступных
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230 через C<GET> данные методы не должны вносить изменений в предметную область.
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231
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232 =head3 C<PUT {id}>
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233
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234 Обновляет дочерний ресурс с указанным идентификатором.
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235
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236 =head3 C<DELETE {id}>
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237
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238 Удаляет дочерний ресурс с указанным идентификатором.
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239
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240 =head3 C<POST>
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241
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242 Добавляет новый дочерний ресурс в коллекцию.
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243
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244 =head2 HTTP METHOD MAPPING
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245
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246 =head3 C<POST {method}>
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247
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248 Вызывает метод C<method>, в отличии от C<GET> методы опубликованные через C<POST> могут вносить
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249 изменения в объекты.
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250
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251 =head1 MEMBERS
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252
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253 =head2 C<[get]target>
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254
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255 Объект (также может быть и класс), обеспечивающий функционал ресурса.
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256
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257 =head2 C<[get]methods>
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258
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259 =head2 C<[get]childRegex>
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260
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261 =head2 C<[get]fetch>
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262
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263 =head2 C<[get]list>
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264
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265 =head2 C<[get]insert>
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266
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267 =head2 C<[get]update>
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268
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269 =head2 C<[get]delete>
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270
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271 =head2 C<GetImpl($child,$action)>
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272
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273 =head2 C<PutImpl($child,$action)>
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274
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275 =head2 C<PostImpl($child,$action)>
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276
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277 =head2 C<DeleteImpl($child,$action)>
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278
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279 =head2 C<InvokeMember($memberInfo,$child,$action)>
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280
196
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281 =cut