annotate Lib/IMPL/Web/QueryHandler/JsonFormat.pm @ 198:2ffe6f661605

Implemented IMPL::Web::Handler::RestController fixes in IMPL::Serialization completed IMPL::Web::Application::RestResource added IMPL::Web::Handler::JSONView added IMPL::Web::RestContract
author cin
date Fri, 20 Apr 2012 16:06:36 +0400
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1 use strict;
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2 package IMPL::Transform::Json;
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3
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4 package IMPL::Web::QueryHandler::JsonFormat;
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5 use parent qw(IMPL::Web::QueryHandler);
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6 use Error qw(:try);
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7 use JSON;
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8
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9 sub Process {
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10 my ($this,$action,$nextHandler) = @_;
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11
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12 my $result;
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13
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14 try {
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15 $result = $nextHandler->();
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16 $result = [$result] unless ref $result;
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17 } otherwise {
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18 my $err = shift;
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19 $result = { error => $err };
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20 };
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21
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22 my $t = new IMPL::Transform::Json($action->context->{json});
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23
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24 if ($action->context->{transactionType} and $action->context->{transactionType} eq 'form') {
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25 delete @$result{qw(formData formSchema)};
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26 my $errors = @$result{formErrors};
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27
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28 $result->{formErrors} = [ map $_->Message, @$errors ] if $errors;
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29 }
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30
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31 $action->response->contentType('text/javascript');
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32
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33 my $hout = $action->response->streamBody;
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34 print $hout to_json( $t->Transform($result), {pretty => 1} );
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35 }
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36
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37 package IMPL::Transform::Json;
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38
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39 use parent qw(IMPL::Transform);
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40 use IMPL::Class::Property;
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41 use IMPL::Class::Property::Direct;
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42 use Scalar::Util qw(refaddr);
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43
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44 BEGIN {
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45 private _direct property _visited => prop_none;
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46 }
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47
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48 my %propListCache;
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49
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50 our %CTOR = (
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51 'IMPL::Transform' => sub {
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52 my $options = shift;
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53 (
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54 $options ? %{$options} : ()
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55 ),
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56 ARRAY => sub {
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57 my ($this,$object) = @_;
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58
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59 return [
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60 map { $this->Transform($_) } @$object
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61 ];
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62 },
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63 HASH => sub {
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64 my ($this,$object) = @_;
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65
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66 return {
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67 map { $_, $this->Transform($object->{$_}) } keys %$object
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68 };
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69 },
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70 'IMPL::Object::List' => sub {
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71 my ($this,$object) = @_;
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72
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73 return [
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74 map { $this->Transform($_) } @$object
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75 ];
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76 },
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77 -plain => sub {
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78 $_[1];
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79 },
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80 -default => sub {
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81 my ($this,$object) = @_;
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82
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83 return "$object" unless $object->isa('IMPL::Object::Abstract');
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84
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85 if ( $object->isa(typeof IMPL::Exception) ) {
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86 return {
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87 type => $object->typeof,
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88 message => $object->Message,
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89 arguments => $this->Transform(scalar $object->Args)
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90 };
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91 }
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92
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93 my $propList = $propListCache{ref $object};
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94 unless ( $propList ) {
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95 my %props = map {
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96 $_->Name, (ref $_->Mutators ? 0 : ($_->Mutators & prop_list))
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97 } $object->get_meta('IMPL::Class::PropertyInfo',sub { $_->Access == IMPL::Class::Member::MOD_PUBLIC and $_->Name !~ /^_/}, 1 );
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98
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99 $propListCache{ref $object} = $propList = \%props;
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100 }
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101
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102 return {
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103 map {
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104 $_, $propList->{$_} ? $this->Transform([$object->$_()]) : $this->Transform(scalar $object->$_());
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105 } keys %$propList
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106 };
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107 }
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108 }
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109 );
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111 sub Transform {
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112 my ($this,$object) = @_;
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113
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114 # small hack to prevent cycling
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115
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116 return $this->SUPER::Transform($object) unless ref $object;
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117
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118 if (exists $this->{$_visited}{refaddr $object}) {
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119 return $this->{$_visited}{refaddr $object};
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120 } else {
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121 $this->{$_visited}{refaddr $object} = undef;
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122 return $this->{$_visited}{refaddr $object} = $this->SUPER::Transform($object);
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123 }
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124 }
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125
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126 1;