annotate Lib/IMPL/ORM/Schema.pm @ 241:f48a1a9f4fa2

+Added ViewResult to allow implementation of the view environment. *TTDocuments now storing creation parameters *TTControls automatically propagating layout and title meta to their attributes +Added UnauthorizaedException web exception *minor fixes
author sergey
date Thu, 18 Oct 2012 04:49:55 +0400
parents d1676be8afcc
children
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1 package IMPL::ORM::Schema;
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2 use strict;
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3 use warnings;
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4
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5 use parent qw(IMPL::DOM::Document);
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6 use IMPL::Class::Property;
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7 require IMPL::ORM::Schema::Entity;
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8 require IMPL::ORM::Schema::ValueType;
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9
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10 our %CTOR = (
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11 'IMPL::DOM::Document' => sub { nodeName => 'ORMSchema' }
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12 );
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13
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14 BEGIN {
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15 public property mapValueTypes => prop_get | owner_set;
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16 public property mapReferenceTypes => prop_get | owner_set;
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17 public property mapPending => prop_get | owner_set;
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18 public property prefix => prop_get | owner_set;
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19 }
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20
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21 sub CTOR {
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22 my ($this ) = @_;
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23 $this->mapValueTypes({});
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24 $this->mapReferenceTypes({});
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25 $this->mapPending({});
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26 }
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27
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28 # return an entity for the specified typename
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29 # makes forward declaration if nesessary
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30 sub resolveType {
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31 my ($this,$typeName) = @_;
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32
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33 $this = ref $this ? $this : $this->instance;
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34
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35 if (my $entity = $this->mapReferenceTypes->{$typeName}) {
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36 return $entity;
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37 } elsif (UNIVERSAL::isa($typeName,'IMPL::ORM::Object')) {
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38 return $this->declareReferenceType($typeName);
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39 } else {
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40 return undef;
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41 }
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42 }
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43
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44 sub declareReferenceType {
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45 my ($this,$typeName) = @_;
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46
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47 my $entity = new IMPL::ORM::Schema::Entity($typeName->entityName);
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48
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49 $this->mapPending->{$typeName} = $entity;
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50
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51 $this->appendChild($entity);
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52
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53 return $this->mapReferenceTypes->{$typeName} = $entity;
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54 }
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55
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56 sub _addReferenceType {
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57 my ($this,$className) = @_;
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58
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59 if ( my $entity = delete $this->mapPending->{$className} ) {
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60 $className->ormGetSchema($this,$entity);
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61 } else {
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62 return $this->appendChild( $this->mapReferenceTypes->{$className} = $className->ormGetSchema($this) );
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63 }
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64
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65 }
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66
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67 # returns valuetype name
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68 sub isValueType {
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69 my ($this,$typeName) = @_;
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70
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71 $this = ref $this ? $this : $this->instance;
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72
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73 return $this->mapValueTypes->{$typeName};
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74 }
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75
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76 my %instances;
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77 sub instance {
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78 my ($class) = @_;
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79
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80 return ($instances{$class} || ($instances{$class} = $class->new));
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81 }
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82
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83 sub ValueTypes {
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84 my ($this,%classes) = @_;
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85
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86 $this = ref $this ? $this : $this->instance;
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87
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88 while ( my ($typeName,$typeReflected) = each %classes ) {
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89 $this->mapValueTypes->{$typeName} = $typeReflected;
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90 $this->appendChild(IMPL::ORM::Schema::ValueType->new($typeName,$typeReflected));
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91 }
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92 }
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93
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94 sub Classes {
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95 my ($this,@classNames) = @_;
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96
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97 $this = ref $this ? $this : $this->instance;
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98
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99 $this->_addReferenceType($this->prefix . $_) foreach @classNames;
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100 }
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101
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102 sub usePrefix {
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103 my ($this,$prefix) = @_;
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104
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105 $prefix .= '::' if $prefix and $prefix !~ /::$/;
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106
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107 (ref $this ? $this : $this->instance)->prefix($prefix);
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108 }
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109
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110 sub CompleteSchema {
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111 my ($this) = @_;
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112
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113 $this = ref $this ? $this : $this->instance;
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114
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115 $_->ormGetSchema($this,delete $this->mapPending->{$_}) foreach (keys %{$this->mapPending});
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116 }
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117
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118 1;
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119
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120 __END__
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121
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122 =pod
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123
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124 =head1 NAME
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125
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126 C<IMPL::ORM::Schema> Схема отображения классов в реляционную структуру.
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127
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128 =head1 DESCRIPTION
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129
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130 Схема данных, представляет собой DOM документ, элементами которой
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131 являются сущности.
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132
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133 Каждый узел - это описание сущности.
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134
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135 =begin code xml
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136
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137 <Schema>
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138 <Entity entityName="My_Data_Foo">
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139 <Field fieldName="Doo" fieldType="String"/>
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140 <HasMany name="Boxes" target="My_Data_Box"/>
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141 </Entity>
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142 <Entity entityName="My_Data_Bar">
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143 <Subclass base="My_Data_Foo"/>
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144 <Field fieldName="Timestamp" fieldType="Integer"/>
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145 </Entity>
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146 <Entity entityName="My_Data_Box">
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147 <Field fieldName="Capacity" fieldType="Integer"/>
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148 </Entity>
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149 </Schema>
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150
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151 =end code xml
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152
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153 =cut