annotate Lib/IMPL/DOM/Transform/ObjectToDOM.pm @ 250:129e48bb5afb

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 2746a8e5a6c4
children 299af584c05f
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1 package IMPL::DOM::Transform::ObjectToDOM;
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2 use strict;
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3
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4 use IMPL::Const qw(:prop :access);
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5 use IMPL::declare {
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6 require => {
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7 PropertyInfo => 'IMPL::Class::PropertyInfo',
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8 Builder => 'IMPL::DOM::Navigator::Builder',
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9 Exception => 'IMPL::Exception',
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10 ArgumentException => '-IMPL::InvalidArgumentException',
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11 OperationException => '-IMPL::InvalidOperationException'
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12 },
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13 base => [
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14 'IMPL::Transform' => sub {
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15 -plain => 'TransformPlain',
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16 HASH => 'TransformHash',
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17 -default => 'TransformDefault'
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18 }
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19 ],
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20 props => [
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21 documentSchema => PROP_RO,
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22 _schema => PROP_RW,
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23 _navi => PROP_RW
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24 ]
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25 };
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26
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27 use constant {
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28 SchemaNode => 'IMPL::DOM::Schema::Node',
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29 ComplexNode => 'IMPL::DOM::Schema::ComplexNode'
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30 };
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31
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32 sub CTOR {
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33 my ($this,$docName,$docSchema,$transforms) = @_;
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34
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35 my $docNodeSchema = $docSchema->selectSingleNode(sub { $_->isa(SchemaNode) and $_->name eq $docName } )
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36 or die OperationException->new("Can't find a node schema for the document '$docName'");
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37
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38 my $docClass = ($docNodeSchema->can('nativeType') ? $docNodeSchema->nativeType : undef) || 'IMPL::DOM::Document';
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39
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40 $this->documentSchema($docNodeSchema);
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41
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42 $this->_navi(
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43 Builder->new(
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44 $docClass,
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45 $docSchema,
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46 ignoreUndefined => 1
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47 )
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48 );
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49 $this->_schema($docSchema);
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50
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51 $this->_navi->NavigateCreate($docName);
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52 }
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53
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54 sub TransformPlain {
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55 my ($this,$data) = @_;
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56
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57 $this->_navi->Current->nodeValue( $data );
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58 return $this->_navi->Current;
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59 }
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60
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61 sub currentNode {
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62 shift->_navi->Current;
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63 }
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64
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65 sub inflateNodeValue {
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66 shift->_navi->inflateValue(shift);
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67 }
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68
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69 sub TransformHash {
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70 my ($this,$data) = @_;
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71
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72 die ArgumentException->new(data => 'A HASH reference is required')
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73 unless ref $data eq 'HASH';
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74
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75 return $this->StoreObject($this->currentNode,$data)
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76 if !$this->currentNode->schema->isa(ComplexNode);
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77
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78 KEYLOOP: foreach my $key (keys %$data) {
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79 my $value = $data->{$key};
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80
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81 if (ref $value eq 'ARRAY') {
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82 foreach my $subval (@$value) {
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83
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84 $this->_navi->saveState();
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85
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86 my $node = $this->_navi->NavigateCreate($key);
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87
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88 unless(defined $node) {
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89 #$this->_navi->Back();
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90 $this->_navi->restoreState();
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91 next KEYLOOP;
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92 }
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93
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94 $this->_navi->applyState();
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95
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96 $this->Transform($subval);
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98 $this->_navi->Back();
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99 }
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100 } else {
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101 $this->_navi->saveState();
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102 my $node = $this->_navi->NavigateCreate($key);
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103
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104 unless(defined $node) {
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105 #$this->_navi->Back();
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106 $this->_navi->restoreState();
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107 next KEYLOOP;
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108 }
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110 $this->_navi->applyState();
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111
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112 warn "$key = $value";
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113
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114 $this->Transform($value);
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115
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116 $this->_navi->Back();
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117 }
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118 }
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119 return $this->_navi->Current;
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120 }
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121
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122 # this method handles situatuions when a complex object must be stored in a
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123 # simple node.
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124 sub StoreObject {
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125 my ($this,$node,$data) = @_;
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126
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127 $node->nodeValue($data);
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128
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129 warn "Stored value for", $node->nodeName;
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130
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131 return $node;
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132 }
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133
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134 sub TransformDefault {
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135 my ($this,$data) = @_;
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136
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137 return $this->StoreObject($this->currentNode,$data)
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138 if !$this->currentNode->schema->isa(ComplexNode);
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139
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140 if ( ref $data and eval { $data->can('GetMeta') } ) {
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141 my %props = map {
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142 $_->name, 1
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143 } $data->GetMeta(PropertyInfo, sub { $_->access == ACCESS_PUBLIC }, 1 );
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144
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145 my %values = map {
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146 $_,
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147 $data->$_();
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148 } keys %props;
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149
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150 return $this->Transform(\%values);
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151 } else {
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152 die OperationException->new("Don't know how to transform $data");
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153 }
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154
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155 return $this->_navi->Current;
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156 }
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157
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158 sub buildErrors {
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159 my ($this) = @_;
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160
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161 return $this->_navi->buildErrors;
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162 }
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163
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164 1;
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165
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166 __END__
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167
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168 =pod
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169
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170 =head1 NAME
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171
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172 C<IMPL::DOM::Transform::ObjectToDOM> -преобразование объекта
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173
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174 =head1 SYNOPSIS
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175
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176 =cut