annotate Lib/Schema/DataSource/CDBIBuilder.pm @ 45:1b1fb9d54f55

Starting web-application concept
author Sergey
date Fri, 29 Jan 2010 16:19:31 +0300
parents 03e58a454b20
children 16ada169ca75
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1 use strict;
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2 package Schema::DataSource::CDBIBuilder;
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3 use Schema::DataSource::TypeMapping;
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4 use Common;
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5 our @ISA = qw(Object);
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6
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7 BEGIN {
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8 DeclareProperty ClassMappings => ACCESS_NONE;
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9 DeclareProperty TypeMapping => ACCESS_READ;
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10 DeclareProperty ValueTypeReflections => ACCESS_READ;
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11 }
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12
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13 sub CTOR {
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14 my ($this,%args) = @_;
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15
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16 $this->{$TypeMapping} = $args{'TypeMapping'} || Schema::DataSource::TypeMapping::Std->new;
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17 $this->{$ValueTypeReflections} = { DateTime => 'DateTime'};
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18 }
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19
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20 sub ReflectValueType {
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21 my ($this,$Type) = @_;
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22 return $this->{$ValueTypeReflections}{$Type->Name->Simple};
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23 }
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24
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25 sub GetClassMapping {
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26 my ($this,$type) = @_;
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27
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28 if (my $mapping = $this->{$ClassMappings}->{$type->Name->Canonical}) {
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29 return $mapping;
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30 } else {
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31 $mapping = new Schema::DataSource::CDBIBuilder::ClassMapping(Class => $type,Parent => $this);
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32 $this->{$ClassMappings}{$type->Name->Canonical} = $mapping;
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33 return $mapping
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34 }
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35 }
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36
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37 sub EnumClassMappings {
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38 my ($this) = @_;
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39 return $this->{$ClassMappings} ? values %{$this->{$ClassMappings}} : ();
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40 }
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41
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42 sub AddType {
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43 my ($this,$type) = @_;
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44 $this->GetClassMapping($type);
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45 }
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46
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47 sub BuildDBSchema {
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48 my ($this) = @_;
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49
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50 my $schemaDB = new Schema::DB(Name => 'auto', Version => time);
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51
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52 if ($this->{$ClassMappings}) {
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53 $_->CreateTable($schemaDB) foreach values %{ $this->{$ClassMappings} };
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54 $_->CreateConstraints($schemaDB) foreach values %{ $this->{$ClassMappings} };
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55 }
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56
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57 return $schemaDB;
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58 }
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59
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60 sub WriteModules {
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61 my ($this,$fileName,$prefix) = @_;
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62
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63 my $text;
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64 $text = <<ModuleHeader;
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65 #autogenerated script don't edit
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66 package ${prefix}DBI;
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67 use base 'Class::DBI';
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68
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69 require DateTime;
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70
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71 our (\$DSN,\$User,\$Password,\$Init);
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72 \$DSN ||= 'DBI:null'; # avoid warning
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73
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74 __PACKAGE__->connection(\$DSN,\$User,\$Password);
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75
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76 # initialize
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77 foreach my \$action (ref \$Init eq 'ARRAY' ? \@{\$Init} : \$Init) {
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78 next unless \$action;
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79
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80 if (ref \$action eq 'CODE') {
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81 \$action->(__PACKAGE__->db_Main);
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82 } elsif (not ref \$action) {
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83 __PACKAGE__->db_Main->do(\$action);
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84 }
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85 }
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86
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87 ModuleHeader
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88
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89 if ($this->{$ClassMappings}) {
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90 $text .= join ("\n\n", map $_->GenerateText($prefix.'DBI',$prefix), sort {$a->Class->Name->Canonical cmp $b->Class->Name->Canonical } values %{ $this->{$ClassMappings} } );
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91 }
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92
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93 $text .= "\n1;";
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94
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95 open my $out, ">$fileName" or die new Exception("Failed to open file",$fileName,$!);
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96 print $out $text;
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97 }
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98
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99 sub Dispose {
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100 my ($this) = @_;
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101
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102 delete @$this{$ClassMappings,$TypeMapping,$ValueTypeReflections};
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103
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104 $this->SUPER::Dispose;
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105 }
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106
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107 package Schema::DataSource::CDBIBuilder::ClassMapping;
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108 use Common;
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109 use Schema;
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110 our @ISA = qw(Object);
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111
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112 BEGIN {
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113 DeclareProperty Table => ACCESS_READ;
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114 DeclareProperty PropertyTables => ACCESS_READ;
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115 DeclareProperty PropertyMappings => ACCESS_READ;
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116
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117 DeclareProperty Class => ACCESS_READ;
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118 DeclareProperty Parent => ACCESS_NONE;
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119 }
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120
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121 sub CTOR {
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122 my ($this,%args) = @_;
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123
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124 $this->{$Class} = $args{'Class'} or die new Exception('The class must be specified');
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125 $this->{$Parent} = $args{'Parent'} or die new Exception('The parent must be specified');
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126
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127 }
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128
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129 sub PropertyMapping {
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130 my ($this,%args) = @_;
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131 $this->{$PropertyMappings}{$args{'name'}} = { Column => $args{'Column'},DBType => $args{'DBType'} };
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132 }
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133
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134 sub CreateTable {
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135 my ($this,$schemaDB) = @_;
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136
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137 return if $this->{$Class}->isTemplate or $this->{$Class}->GetAttribute('ValueType') or $this->{$Class}->Name->Simple eq 'Set';
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138
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139 # CreateTable
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140 my $table = $schemaDB->AddTable({Name => $this->{$Class}->Name->Canonical});
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141 $table->InsertColumn({
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142 Name => '_id',
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143 Type => $this->{$Parent}->TypeMapping->DBIdentifierType,
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144 Tag => ['AUTO_INCREMENT']
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145 });
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146 $table->SetPrimaryKey('_id');
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147 foreach my $prop ( grep { UNIVERSAL::isa($_,'Schema::Property') } $this->{$Class}->ListMembers ) {
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148 if ($prop->Type->Name->Name eq 'Set') {
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149 # special case for multiple values
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150 my $propTable = $this->CreatePropertyTable($schemaDB,$prop);
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151 $propTable->LinkTo($table,'parent');
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152 } else {
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153 $table->InsertColumn({
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154 Name => $prop->Name,
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155 Type => $this->{$Parent}->TypeMapping->MapType($prop->Type),
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156 CanBeNull => 1
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157 });
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158 }
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159 }
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160 $this->{$Table} = $table;
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161 return $table;
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162 }
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163
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164 sub CreatePropertyTable {
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165 my ($this,$schemaDB,$property) = @_;
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166
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167 my $table = $schemaDB->AddTable({Name => $this->{$Class}->Name->Canonical.'_'.$property->Name});
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168 $table->InsertColumn({
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169 Name => '_id',
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170 Type => $this->{$Parent}->TypeMapping->DBIdentifierType,
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171 Tag => ['AUTO_INCREMENT']
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172 });
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173 $table->SetPrimaryKey('_id');
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174
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175 $table->InsertColumn({
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176 Name => 'parent',
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177 Type => $this->{$Parent}->TypeMapping->DBIdentifierType
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178 });
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179
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180 $table->InsertColumn({
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181 Name => 'value',
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182 Type => $this->{$Parent}->TypeMapping->MapType($property->Type->GetAttribute('TemplateInstance')->{'Parameters'}{'T'}),
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183 CanBeNull => 1
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184 });
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185
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186 $this->{$PropertyTables}->{$property->Name} = $table;
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187
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188 return $table;
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189 }
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190
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191 sub CreateConstraints {
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192 my ($this,$schemaDB) = @_;
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193 return if $this->{$Class}->isTemplate or $this->{$Class}->GetAttribute('ValueType') or $this->{$Class}->Name->Simple eq 'Set';
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194
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195 foreach my $prop ( grep { UNIVERSAL::isa($_,'Schema::Property') } $this->{$Class}->ListMembers ) {
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196 if ($prop->Type->Name->Name eq 'Set' ) {
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197 # special case for multiple values
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198 if (not $prop->Type->GetAttribute('TemplateInstance')->{'Parameters'}{'T'}->GetAttribute('ValueType')) {
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199 $this->{$PropertyTables}->{$prop->Name}->LinkTo(
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200 $this->{$Parent}->GetClassMapping($prop->Type->GetAttribute('TemplateInstance')->{'Parameters'}{'T'})->Table,
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201 'value'
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202 );
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203 }
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204 } elsif (not $prop->Type->GetAttribute('ValueType')) {
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205 $this->{$Table}->LinkTo(
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206 scalar($this->{$Parent}->GetClassMapping($prop->Type)->Table),
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207 $prop->Name
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208 );
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209 }
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210 }
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211 }
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212
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213 sub GeneratePropertyTableText {
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214 my ($this,$prop,$baseModule,$prefix) = @_;
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215
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216 my $packageName = $this->GeneratePropertyClassName($prop,$prefix);
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217 my $tableName = $this->{$PropertyTables}->{$prop->Name}->Name;
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218 my $parentName = $this->GenerateClassName($prefix);
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219 my $text .= "package $packageName;\n";
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220 $text .= "use base '$baseModule';\n\n";
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221 $text .= "__PACKAGE__->table('`$tableName`');\n";
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222 $text .= "__PACKAGE__->columns(Essential => qw/_id parent value/);\n";
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223 $text .= "__PACKAGE__->has_a( parent => '$parentName');\n";
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224
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225 my $typeValue;
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226 if ($prop->Type->Name->Simple eq 'Set') {
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227 $typeValue = $prop->Type->GetAttribute('TemplateInstance')->{'Parameters'}{'T'};
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228 } else {
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229 $typeValue = $prop->Type;
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230 }
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231 if ($typeValue->GetAttribute('ValueType')) {
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232 if (my $reflectedClass = $this->{$Parent}->ReflectValueType($typeValue)) {
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233 $text .= "__PACKAGE__->has_a( value => '$reflectedClass');\n";
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234 }
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235 } else {
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236 my $foreignName = $this->{$Parent}->GetClassMapping($prop->Type->GetAttribute('TemplateInstance')->{'Parameters'}{'T'})->GenerateClassName($prefix);
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237 $text .= "__PACKAGE__->has_a( value => '$foreignName');\n";
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238 }
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239
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240 return $text;
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241 }
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242
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243 sub GeneratePropertyClassName {
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244 my ($this,$prop,$prefix) = @_;
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245
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246 my $packageName = $this->{$Class}->Name->Canonical;
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247 $packageName =~ s/\W//g;
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248 return $prefix.$packageName.$prop->Name.'Ref';
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249 }
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250
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251 sub GenerateClassName {
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252 my ($this,$prefix) = @_;
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253 my $packageName = $this->{$Class}->Name->Canonical;
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254 $packageName =~ s/\W//g;
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255 return $prefix. $packageName;
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256 }
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257
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258 sub GenerateText {
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259 my ($this,$baseModule,$prefix) = @_;
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260
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261 return if $this->{$Class}->isTemplate or $this->{$Class}->GetAttribute('ValueType') or $this->{$Class}->Name->Simple eq 'Set';
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262
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263 my @PropertyModules;
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264 my $text;
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265 my $packageName = $this->GenerateClassName($prefix);
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266
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267 my $tableName = $this->{$Table}->Name;
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268 my $listColumns = join ',', map { '\''. $_->Name . '\''} $this->{$Table}->Columns;
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269
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270 $text .= "package $packageName;\n";
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271 $text .= "use base '$baseModule'". ($this->{$Class}->Name->Name eq 'Map' ? ',\'CDBI::Map\'' : '' ).";\n\n";
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272
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273 $text .= "__PACKAGE__->table('`$tableName`');\n";
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274 $text .= "__PACKAGE__->columns(Essential => $listColumns);\n";
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275
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276 foreach my $prop ( grep { UNIVERSAL::isa($_,'Schema::Property') } $this->{$Class}->ListMembers ) {
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277 my $propName = $prop->Name;
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278 if ($prop->Type->Name->Name eq 'Set') {
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279 # has_many
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280 push @PropertyModules, $this->GeneratePropertyTableText($prop,$baseModule,$prefix);
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281 my $propClass = $this->GeneratePropertyClassName($prop,$prefix);
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282 $text .= <<ACCESSORS;
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283 __PACKAGE__->has_many( ${propName}_ref => '$propClass');
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284 sub $propName {
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285 return map { \$_->value } ${propName}_ref(\@_);
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286 }
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287 sub add_to_$propName {
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288 return add_to_${propName}_ref(\@_);
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289 }
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290 ACCESSORS
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291
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292 } elsif (not $prop->Type->GetAttribute('ValueType')) {
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293 # has_a
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294 my $ForeignClass = $this->{$Parent}->GetClassMapping($prop->Type)->GenerateClassName($prefix);
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295 $text .= "__PACKAGE__->has_a( $propName => '$ForeignClass');\n";
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296 } else {
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297 if (my $reflectedClass = $this->{$Parent}->ReflectValueType($prop->Type)) {
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298 $text .= "__PACKAGE__->has_a( $propName => '$reflectedClass');\n";
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299 }
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300 }
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301 }
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302
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303 # ñîçäàåì ñïèñîê äî÷åðíèõ êëàññîâ
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304 foreach my $descedantMapping (grep {$_->{$Class}->isType($this->{$Class},1)} $this->{$Parent}->EnumClassMappings) {
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305 next if $descedantMapping == $this;
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306 $text .= "__PACKAGE__->might_have('m".$descedantMapping->GenerateClassName('')."' => '".$descedantMapping->GenerateClassName($prefix)."');\n";
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307 }
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308
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309 # ñîçäàåì ññûëêè íà âñå êëàññû, êîòîðûå ìîãóò ññûëàòüñÿ íà íàø
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310 # âèä ñâîéñòâà ññûëêè: refererClassProp
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311 foreach my $referer (grep {not $_->Class->isTemplate} $this->{$Parent}->EnumClassMappings) {
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312 next if $referer == $this;
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313 foreach my $prop ( grep { $_->isa('Schema::Property') } $referer->{$Class}->ListMembers ) {
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314 if($prop->Type->Equals($this->{$Class})) {
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315 $text .= "__PACKAGE__->has_many('referer".$referer->GenerateClassName('').$prop->Name."' => '".$referer->GenerateClassName($prefix)."','".$prop->Name."');\n";
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316 } elsif ($prop->Type->Name->Name eq 'Set' and $this->{$Class}->Equals($prop->Type->GetAttribute('TemplateInstance')->{'Parameters'}{'T'}) ) {
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317 # åñëè êëàññ áûë ïàðàìåòðîì ìíîæåñòâà è $prop->Type è åñòü ýòî ìíîæåñòâî
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318 $text .= "__PACKAGE__->has_many('referer".$referer->GeneratePropertyClassName($prop,'')."value' => '".$referer->GeneratePropertyClassName($prop,$prefix)."','value');\n";
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319 }
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320 }
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321 }
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322
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323 return (@PropertyModules,$text);
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324 }
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325
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326 1;