annotate Lib/IMPL/Serialization.pm @ 235:a4d9126edcbb

code cleaning
author sergey
date Fri, 12 Oct 2012 02:08:51 +0400
parents c477f24f1980
children 4ddb27ff4a0b
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1 package IMPL::Serialization;
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2 use strict;
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3
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4 package IMPL::Serialization::Context;
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5 use parent qw(IMPL::Object);
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6
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7 use IMPL::Class::Property;
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8 use IMPL::Class::Property::Direct;
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9 use IMPL::Exception;
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10 use Scalar::Util qw(refaddr);
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11
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12 BEGIN {
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13 private _direct property ObjectWriter => prop_all;
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14 private _direct property Context => prop_all;
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15 private _direct property NextID => prop_all;
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16
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17 public _direct property Serializer => prop_all;
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18
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19 private _direct property State => prop_all;
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20 }
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21
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22 sub STATE_CLOSED () { 0 }
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23 sub STATE_OPENED () { 1 }
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24 sub STATE_COMPLEX () { 2 }
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25 sub STATE_DATA () { 3 }
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26
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27 sub CTOR {
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28 my ($this,%args) = @_;
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29
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30 $this->{$ObjectWriter} = $args{'ObjectWriter'};
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31 $this->{$NextID} = 1;
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32 $this->{$Serializer} = ($args{'Serializer'} ? $args{'Serializer'} : \&DefaultSerializer );
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33 $this->{$State} = STATE_CLOSED;
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34
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35 return 1;
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36 }
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37
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38 sub AddVar {
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39 my ($this,$sName,$Var) = @_;
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40
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41 die new Exception ('Invalid operation') if $this->{$State} == STATE_DATA;
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42
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43 if (not ref $Var) {
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44 my $prevState = $this->{$State};
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45
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46 $this->{$ObjectWriter}->BeginObject(name => $sName);
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47 $this->{$State} = STATE_OPENED;
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48
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49 $this->{$Serializer}->($this,\$Var);
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50
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51 $this->{$ObjectWriter}->EndObject();
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52
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53 if ($prevState == STATE_OPENED) {
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54 $this->{$State} = STATE_COMPLEX;
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55 } else {
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56 $this->{$State} = $prevState;
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57 }
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58 return 0;
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59 }
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60
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61 my $PrevState = $this->{$State};
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62
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63 my $ObjID = $this->{$Context}->{refaddr $Var};
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64 if ($ObjID) {
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65 $this->{$ObjectWriter}->BeginObject(name => $sName, refid => $ObjID);
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66 $this->{$ObjectWriter}->EndObject();
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67 return $ObjID;
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68 }
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69
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70 $ObjID = $this->{$NextID};
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71 $this->{$NextID} = $ObjID + 1;
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72
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73 $this->{$Context}->{refaddr $Var} = $ObjID;
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74
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75 $this->{$ObjectWriter}->BeginObject(name => $sName, type => ref($Var), id => $ObjID);
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76
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77 $this->{$State} = STATE_OPENED;
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78 $this->{$Serializer}->($this,$Var);
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79
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80 $this->{$ObjectWriter}->EndObject();
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81
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82 if ($PrevState == STATE_OPENED) {
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83 $this->{$State} = STATE_COMPLEX;
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84 } else {
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85 $this->{$State} = $PrevState;
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86 }
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87
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88 return $ObjID;
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89 }
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90
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91 sub SetData {
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92 my ($this,$Data,$Type) = @_;
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93
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94 die new Exception ('The object should be a scalar value') if ref $Data;
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95 die new Exception ('Invalid operation') if $this->{$State} != STATE_OPENED;
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96
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97 $this->{$ObjectWriter}->SetData($Data,$Type);
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98
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99 $this->{$State} = STATE_DATA;
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100
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101 return 1;
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102 }
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103
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104 sub DefaultSerializer {
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105 my ($Context, $refObj) = @_;
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106
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107 if (ref($refObj) eq 'SCALAR') {
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108 $Context->SetData($$refObj, 'SCALAR');
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109 } elsif (ref($refObj) eq 'ARRAY') {
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110 $Context->AddVar('item',$_) foreach @$refObj;
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111 } elsif (ref($refObj) eq 'HASH') {
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112 while (my ($key,$value) = each %$refObj) {
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113 $Context->AddVar($key,$value);
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114 }
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115 } elsif (ref($refObj) eq 'REF') {
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116 $Context->AddVar('ref',$$refObj);
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117 } else {
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118 if (ref $refObj and $refObj->UNIVARSAL::can('save')) {
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119 $refObj->save($Context);
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120 } else {
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121 die new Exception('Cant serialize the object of the type: '.ref($refObj));
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122 }
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123 }
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124
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125 return 1;
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126 }
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127
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128 package IMPL::Deserialization::Context;
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129 use parent qw(IMPL::Object);
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130
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131 use IMPL::Class::Property;
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132 use IMPL::Class::Property::Direct;
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133 use IMPL::Exception;
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134
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135 BEGIN {
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136 private _direct property Context => prop_all;
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137
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138 # структура информации об объекте
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139 # {
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140 # Type => 'typename',
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141 # Name => 'object_name',
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142 # Data => $Data,
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143 # Id => 'object_id'
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144 # }
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145 private _direct property CurrentObject => prop_all;
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146
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147 private _direct property ObjectsPath => prop_all;
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148
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149 public _direct property Root => prop_get;
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150
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151 # пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ
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152 # ObjectFactory($Type,$DeserializationData,$refSurogate)
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153 # $Type - пїЅпїЅпїЅ пїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ
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154 # $DeserializationData - пїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ,
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155 # пїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ.
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156 # $refSurogate - пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ, пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ.
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157 # пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ undef
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158 private _direct property ObjectFactory => prop_all;
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159
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160 # пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ.
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161 # SurogateHelper($Type)
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162 # $Type пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ, пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ.
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163 private _direct property SurrogateHelper => prop_all;
0
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164 }
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165
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166 sub CTOR {
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167 my ($this,%args) = @_;
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168 $this->{$CurrentObject} = undef;
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169 $this->{$Root} = undef;
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170 $this->{$ObjectFactory} = $args{ObjectFactory} if $args{ObjectFactory};
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171 $this->{$SurrogateHelper} = $args{SurrogateHelper} if $args{SurrogateHelper};
0
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172 }
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173
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174 sub OnObjectBegin {
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175 my ($this,$name,$rhProps) = @_;
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176
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177 die new Exception("Invalid data from an ObjectReader","An object reader should pass a referense to a hash which contains attributes of an object") if (ref $rhProps ne 'HASH');
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178 die new Exception("Trying to create second root object") if not $this->{$CurrentObject} and $this->{$Root};
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179
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180 if ($rhProps->{'refid'}) {
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181 my $refObj = $this->{$Context}->{$rhProps->{'refid'}};
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182 die new Exception("A reference to a not existing object found") if not $refObj;
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183 my $rhCurrentObj = $this->{$CurrentObject};
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184
219
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185 die new Exception("The root object can't be a reference") if not $rhCurrentObj;
0
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186
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187 if ($rhCurrentObj->{'Data'}) {
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188 die new Exception("Invalid serializaed data","Plain deserialization data for an object already exist") if not ref $rhCurrentObj->{'Data'};
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189 push @{$rhCurrentObj->{'Data'}}, $name,$refObj;
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190 } else {
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191 $rhCurrentObj->{'Data'} = [$name,$refObj];
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192 }
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193
180
d1676be8afcc Перекодировка в utf-8
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parents: 166
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194 # пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ, пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ OnObjectEnd пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ, пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ. пїЅ.пїЅ. пїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅ
0
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195 push @{$this->{$ObjectsPath}},$rhCurrentObj;
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196 $this->{$CurrentObject} = undef;
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197
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198 } else {
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199 push @{$this->{$ObjectsPath}},$this->{$CurrentObject} if $this->{$CurrentObject};
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200
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201 $this->{$CurrentObject} = {
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202 Name => $name,
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203 Type => $rhProps->{'type'} || 'SCALAR',
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204 Id => $rhProps->{'id'},
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205 refId => $rhProps->{'refid'}
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206 };
60
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parents: 49
diff changeset
207
194
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cin
parents: 180
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208 if (defined $rhProps->{'id'}) {
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parents: 180
diff changeset
209 die new IMPL::Exception("Trying to create a simple object instead of a reference, type is missing.",$name,$rhProps->{id}) unless $rhProps->{'type'} ;
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parents: 180
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210 $this->{$Context}->{$rhProps->{'id'}} = $this->{$SurrogateHelper} ? $this->{$SurrogateHelper}->($rhProps->{'type'}) : DefaultSurrogateHelper($rhProps->{'type'});
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parents: 180
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211 }
0
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212 }
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213
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214 return 1;
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215 }
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216
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217 sub OnObjectData {
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218 my ($this,$data) = @_;
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219
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220 my $rhObject = $this->{$CurrentObject};
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221
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222 die new Exception("Trying to set data for an object which not exists") if not $rhObject;
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223
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224 die new Exception("Deserialization data already exists for a current object", "ObjectName= $rhObject->{'Name'}") if $rhObject->{'Data'};
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225
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226 $rhObject->{'Data'} = $data;
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227
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228 return 1;
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229 }
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230 {
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231 my $AutoId = 0;
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232 sub OnObjectEnd {
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233 my ($this,$name) = @_;
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234
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235 my $rhObject = $this->{$CurrentObject};
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236 my $rhPrevObject = pop @{$this->{$ObjectsPath}};
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237
180
d1676be8afcc Перекодировка в utf-8
sourcer
parents: 166
diff changeset
238 # пїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ, пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ - пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ, пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ - пїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ
d1676be8afcc Перекодировка в utf-8
sourcer
parents: 166
diff changeset
239 # пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅпїЅ пїЅ пїЅпїЅпїЅпїЅпїЅпїЅ пїЅпїЅпїЅпїЅпїЅ пїЅпїЅ пїЅпїЅпїЅпїЅпїЅпїЅ
0
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240 if ((not defined($rhObject)) && $rhPrevObject) {
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241 $this->{$CurrentObject} = $rhPrevObject;
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242 return 1;
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243 }
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244
202
5146e17a7b76 IMPL::Web::Application::RestResource fixes, documentation
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diff changeset
245 my $refObj = $this->{$ObjectFactory} ?$this->{$ObjectFactory}->($rhObject->{'Type'},$rhObject->{'Data'},$rhObject->{'Id'} ? $this->{$Context}->{$rhObject->{'Id'}} : undef) : DefaultFactory($rhObject->{'Type'},$rhObject->{'Data'},$rhObject->{'Id'} ? $this->{$Context}->{$rhObject->{'Id'}} : undef);
0
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246
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247 die new Exception("Trying to close a non existing oject") if not $rhObject;
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248
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249 my $Data;
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250
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251 if ($rhObject->{'Id'}) {
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parents:
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252 $this->{$Context}->{$rhObject->{'Id'}} = $refObj;
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253 $Data = $refObj;
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parents:
diff changeset
254 } else {
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parents:
diff changeset
255 if (ref $refObj ne 'SCALAR') {
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parents:
diff changeset
256 $rhObject->{Id} = "auto$AutoId";
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diff changeset
257 $AutoId ++;
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258 $this->{$Context}->{$rhObject->{'Id'}} = $refObj;
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259 $Data = $refObj;
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diff changeset
260 } else {
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parents:
diff changeset
261 $Data = ${$refObj};
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parents:
diff changeset
262 }
03e58a454b20 Создан репозитарий
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parents:
diff changeset
263 }
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parents:
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264
03e58a454b20 Создан репозитарий
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diff changeset
265 if (not $rhPrevObject) {
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266 $this->{$Root} = $Data;
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parents:
diff changeset
267 } else {
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parents:
diff changeset
268 if ($rhPrevObject->{'Data'}) {
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269 die new Exception("Trying append a reference to an object to the plain data") if not ref $rhPrevObject->{'Data'};
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parents:
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270 push @{$rhPrevObject->{'Data'}},$rhObject->{'Name'},$Data;
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parents:
diff changeset
271 } else {
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272 $rhPrevObject->{'Data'} = [$rhObject->{'Name'},$Data];
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parents:
diff changeset
273 }
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diff changeset
274 }
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275
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276 $this->{$CurrentObject} = $rhPrevObject;
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277
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278 return 1;
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parents:
diff changeset
279 }
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parents:
diff changeset
280 }
03e58a454b20 Создан репозитарий
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281
198
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
282 {
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
283 my %classes;
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
284 sub _load_class {
199
e743a8481327 Added REST support for forms (with only get and post methods)
sergey
parents: 198
diff changeset
285 return if $classes{$_[0]};
e743a8481327 Added REST support for forms (with only get and post methods)
sergey
parents: 198
diff changeset
286
207
f534a60d5b01 minor changes
sergey
parents: 202
diff changeset
287 die new IMPL::Exception("Invalid class name",$_[0]) unless $_[0] =~ m/^(\w+(?:\:\:\w+)*)$/;
199
e743a8481327 Added REST support for forms (with only get and post methods)
sergey
parents: 198
diff changeset
288
207
f534a60d5b01 minor changes
sergey
parents: 202
diff changeset
289 eval "require $1";
199
e743a8481327 Added REST support for forms (with only get and post methods)
sergey
parents: 198
diff changeset
290 $classes{$_[0]} = 1;
198
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
291 }
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
292 }
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
293
115
5edc2ac5231c minor fix to the serialization mechanism
wizard
parents: 60
diff changeset
294 sub DefaultSurrogateHelper {
0
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diff changeset
295 my ($Type) = @_;
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296
03e58a454b20 Создан репозитарий
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diff changeset
297 if ($Type eq 'SCALAR' or $Type eq 'REF') {
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diff changeset
298 my $var;
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diff changeset
299 return \$var;
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diff changeset
300 } elsif ($Type eq 'ARRAY') {
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parents:
diff changeset
301 return [];
03e58a454b20 Создан репозитарий
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parents:
diff changeset
302 } elsif ($Type eq 'HASH') {
03e58a454b20 Создан репозитарий
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parents:
diff changeset
303 return {};
60
b0c068da93ac Lazy activation for the configuration objects (final concept)
wizard
parents: 49
diff changeset
304 } elsif ($Type) {
198
2ffe6f661605 Implemented IMPL::Web::Handler::RestController
cin
parents: 196
diff changeset
305 _load_class($Type);
60
b0c068da93ac Lazy activation for the configuration objects (final concept)
wizard
parents: 49
diff changeset
306 if (UNIVERSAL::can($Type,'surrogate')) {
0
03e58a454b20 Создан репозитарий
Sergey
parents:
diff changeset
307 return $Type->surrogate();
03e58a454b20 Создан репозитарий
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parents:
diff changeset
308 } else {
03e58a454b20 Создан репозитарий
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parents:
diff changeset
309 return bless {}, $Type;
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parents:
diff changeset
310 }
03e58a454b20 Создан репозитарий
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parents:
diff changeset
311 }
03e58a454b20 Создан репозитарий
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diff changeset
312 }
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313
03e58a454b20 Создан репозитарий
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parents:
diff changeset
314 # deserialization context:
03e58a454b20 Создан репозитарий
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parents:
diff changeset
315 # [
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parents:
diff changeset
316 # 'var_name',value,
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parents:
diff changeset
317 # ....
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parents:
diff changeset
318 # ]
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parents:
diff changeset
319
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parents:
diff changeset
320 sub DefaultFactory {
03e58a454b20 Создан репозитарий
Sergey
parents:
diff changeset
321 my ($Type,$Data,$refSurogate) = @_;
03e58a454b20 Создан репозитарий
Sergey
parents:
diff changeset
322
03e58a454b20 Создан репозитарий
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parents:
diff changeset
323 if ($Type eq 'SCALAR') {
03e58a454b20 Создан репозитарий
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parents:
diff changeset
324 die new Exception("SCALAR needs a plain data for a deserialization") if ref $Data;
03e58a454b20 Создан репозитарий
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parents:
diff changeset
325 if ($refSurogate) {
03e58a454b20 Создан репозитарий
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parents:
diff changeset
326 $$refSurogate = $Data;
03e58a454b20 Создан репозитарий
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parents:
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327 return $refSurogate;
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328 } else {
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329 return \$Data;
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330 }
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331 } elsif ($Type eq 'ARRAY') {
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332 $Data ||= [];
0
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333 die new Exception("Invalid a deserialization context when deserializing ARRAY") if not ref $Data and defined $Data;
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334 if (not ref $refSurogate) {
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335 my @Array;
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336 $refSurogate = \@Array;
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337 }
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338 for (my $i = 0; $i < scalar(@{$Data})/2; $i++) {
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339 push @$refSurogate,$Data->[$i*2+1];
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340 }
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341 return $refSurogate;
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342 } elsif ($Type eq 'HASH') {
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343 $Data ||= [];
0
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344 die new Exception("Invalid a deserialization context when deserializing HASH") if not ref $Data and defined $Data;
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345 if (not ref $refSurogate) {
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346 $refSurogate = {};
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347 }
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348 for (my $i = 0; $i< @$Data; $i+= 2) {
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349 $refSurogate->{$Data->[$i]} = $Data->[$i+1];
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350 }
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351 return $refSurogate;
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352 } elsif ($Type eq 'REF') {
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353 $Data ||= [];
0
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354 die new Exception("Invalid a deserialization context when deserializing REF") if not ref $Data and defined $Data;
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355 if (not ref $refSurogate) {
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356 my $ref = $Data->[1];
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357 return \$ref;
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358 } else {
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359 $$refSurogate = $Data->[1];
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360 return $refSurogate;
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361 }
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362 } else {
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363 _load_class($Type);
0
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364 if ( $Type->UNIVERSAL::can('restore') ) {
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365 return $Type->restore($Data,$refSurogate);
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366 } else {
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367 die new Exception("Don't know how to deserialize $Type");
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368 }
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369 }
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370 }
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371
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372 package IMPL::Serializer;
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373 use parent qw(IMPL::Object);
0
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374
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375 use IMPL::Class::Property;
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376 use IMPL::Class::Property::Direct;
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377 use IMPL::Exception;
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378
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379 BEGIN {
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380 private _direct property Formatter => prop_all;
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381 }
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382
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383 sub CTOR {
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384 my ($this,%args) = @_;
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385 $this->Formatter($args{'Formatter'}) or die new Exception("Omitted mandatory parameter 'Formatter'");
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386 }
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387
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388 sub Serialize {
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389 my $this = shift;
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390 my ($hStream,$Object) = @_;
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391 my $ObjWriter = $this->Formatter()->CreateWriter($hStream);
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392 my $Context = new IMPL::Serialization::Context(ObjectWriter => $ObjWriter);
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393 $Context->AddVar('root',$Object);
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394 return 1;
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395 }
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396
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397 sub Deserialize {
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398 my $this = shift;
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399 my ($hStream) = @_;
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400 my $Context = new IMPL::Deserialization::Context();
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401 my $ObjReader = $this->Formatter()->CreateReader($hStream,$Context);
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402 $ObjReader->Parse();
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403 return $Context->Root();
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404 }
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405
49
16ada169ca75 migrating to the Eclipse IDE
wizard@linux-odin.local
parents: 0
diff changeset
406 1;