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165
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1 package IMPL::SQL::Schema::Traits;
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49
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2 use strict;
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163
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3 use IMPL::_core::version;
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4 use IMPL::Exception();
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5
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165
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6 use parent qw(IMPL::Object);
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7 use IMPL::Code::Loader();
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8
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9 BEGIN {
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10 IMPL::Code::Loader->Provide(__PACKAGE__);
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11 }
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12
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164
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13 ###################################################
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14
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165
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15 package IMPL::SQL::Schema::Traits::Table;
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16 use base qw(IMPL::Object::Fields);
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17
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18 use fields qw(
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19 name
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20 columns
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21 constraints
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22 options
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23 );
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24
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25 sub CTOR {
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26 my ($this,$table,$columns,$constraints,$options) = @_;
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27
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28 $this->{name} = $table or die new IMPL::InvalidArgumentException(table => "A table name is required");
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29 $this->{columns} = $columns if defined $columns;
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30 $this->{constraints} = $constraints if defined $constraints;
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31 $this->{options} = $options if defined $options;
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164
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32 }
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33
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34 ###################################################
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35
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165
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36 package IMPL::SQL::Schema::Traits::Column;
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37 use base qw(IMPL::Object::Fields);
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164
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38
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39 use fields qw(
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40 name
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41 type
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42 isNullable
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43 defaultValue
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44 tag
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45 );
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46
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47 sub CTOR {
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48 my ($this, $name, $type, %args) = @_;
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49
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50 $this->{name} = $name or die new IMPL::InvalidArgumentException("name");
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51 $this->{type} = $type or die new IMPL::InvalidArgumentException("type");
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52 $this->{isNullable} = $args{isNullable} if exists $args{isNullable};
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53 $this->{defaultValue} = $args{defaultValue} if exists $args{defaultValue};
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54 $this->{tag} = $args{tag} if exists $args{tag};
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55 }
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56
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57 ##################################################
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58
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59 package IMPL::SQL::Schema::Traits::Constraint;
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60 use base qw(IMPL::Object::Fields);
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61
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164
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62 use fields qw(
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63 name
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64 columns
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65 );
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66
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67 sub CTOR {
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68 my ($this, $name, $columns) = @_;
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69
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70 $this->{name} = $name;
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71 $$this->{columns} = $columns; # list of columnNames
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72 }
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73
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74 ##################################################
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75
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76 package IMPL::SQL::Schema::Traits::PrimaryKey;
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77
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78 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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79
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80 __PACKAGE__->PassThroughArgs;
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81
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82 ##################################################
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83
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84 package IMPL::SQL::Schema::Traits::Index;
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85
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86 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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87
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88 __PACKAGE__->PassThroughArgs;
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89
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90 ##################################################
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91
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92 package IMPL::SQL::Schema::Traits::Unique;
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93
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94 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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164
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95
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96 __PACKAGE__->PassThroughArgs;
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163
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97
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164
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98 ##################################################
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99
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165
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100 package IMPL::SQL::Schema::Traits::ForeignKey;
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164
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101
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102 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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164
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103 use fields qw(
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104 foreignTable
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105 foreignColumns
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106 );
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107
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108 our %CTOR = (
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109 'IMPL::SQL::Schema::Traits::Constraint' => sub { @_[0..1] }
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110 );
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111
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112 sub CTOR {
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113 my ($this,$foreignTable,$foreignColumns) = @_[0,3,4];
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114
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115 $this->{foreignTable} = $foreignTable;
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116 $this->{foreignColunms} = $foreignColumns;
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117 }
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118
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119
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120 ##################################################
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121
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122 package IMPL::SQL::Schema::Traits::CreateTable;
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164
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123
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124 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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125 use IMPL::Class::Property;
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126 use IMPL::lang;
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127
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128 BEGIN {
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129 public property table => prop_get | owner_set;
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130 }
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131
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132 sub CTOR {
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133 my ($this,$table) = @_;
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134
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135 die new IMPL::InvalidArgumentException("table", "An object of IMPL::SQL::Schema::Traits::Table type is required")
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136 unless is $table, typeof IMPL::SQL::Schema::Traits::Table;
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137
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138 $this->table($table);
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139 }
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140
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141 sub apply {
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142 my ($this,$schema) = @_;
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143
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144 return 0 if ( $schema->GetTable( $this->table->{name} ) );
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145
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146 $schema->AddTable($this->table);
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147 return 1;
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148 }
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149
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150 ##################################################
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151
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165
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152 package IMPL::SQL::Schema::Traits::DropTable;
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153 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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154 use IMPL::Class::Property;
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155
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156 BEGIN {
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157 public property tableName => prop_get | owner_set;
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158 }
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159
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160 sub CTOR {
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161 my ($this,$tableName) = @_;
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162
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163 $this->tableName($tableName) or die new IMPL::InvalidArgumentException("tableName is required");
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164 }
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165
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166 sub apply {
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167 my ($this,$schema) = @_;
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168
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169 return 0 if $schema->GetTable( $this->tableName );
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170
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171 $schema->RemoveTable($this->tableName);
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172
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173 return 1;
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174 }
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175
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176 ##################################################
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177
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178 package IMPL::SQL::Schema::Traits::RenameTable;
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179 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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180 use IMPL::Class::Property;
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181
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182 BEGIN {
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183 public property tableName => prop_get | owner_set;
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184 public property tableNewName => prop_get | owner_set;
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185 }
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186
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187 sub CTOR {
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188 my ($this, $oldName, $newName) = @_;
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189
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190 $this->tableName($oldName) or die new IMPL::InvalidArgumentException("A table name is required");
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191 $this->tableNewName($newName) or die new IMPL::InvalidArgumentException("A new table name is required");
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192 }
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193
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194 sub apply {
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195 my ($this,$schema) = @_;
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196
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197 return 0 if not $schema->GetTable($this->tableName) or $schema->GetTable($this->tableNewName);
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198
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199 $this->RenameTable($this->tableName, $this->tableNewName);
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200
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201 return 1;
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202 }
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203
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204 #################################################
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205
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206 package IMPL::SQL::Schema::Traits::AlterTableAddColumn;
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207 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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208 use IMPL::Class::Property;
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209 use IMPL::lang;
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210
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211 BEGIN {
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212 public property tableName => prop_get | owner_set;
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213 public property column => prop_get | owner_set;
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214 }
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215
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164
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216 sub CTOR {
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217 my ($this,$tableName,$column) = @_;
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218
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219 $this->tableName($tableName) or die new IMPL::InvalidArgumentException("A table name is required");
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220
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221 die new IMPL::InvalidArgumentException("A column should be a IMPL::SQL::Schema::Traits::Column object")
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222 unless is $column, typeof IMPL::SQL::Schema::Traits::Column;
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223
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224 $this->column($column);
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225 }
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226
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227 sub apply {
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228 my ($this,$schema) = @_;
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229
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230 my $table = $schema->GetTable($this->tableName) or return 0;
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231
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232 return 0 if $table->GetColumn( $this->column->{name} );
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233
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234 $table->AddColumn($this->column);
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235
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236 return 1;
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237 }
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238
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239 #################################################
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240
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241 package IMPL::SQL::Schema::Traits::AlterTableDropColumn;
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242 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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243 use IMPL::Class::Property;
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244
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245 BEGIN {
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246 public property tableName => prop_get | owner_set;
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247 public property columnName => prop_get | owner_set;
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248 }
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249
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250 sub CTOR {
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251 my ($this,$table,$column) = @_;
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252
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253 $this->tableName($table) or die new IMPL::InvalidArgumentException(tableName => "A table name should be specified");
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254 $this->columnName($column) or die new IMPL::InvalidArgumentException(columnName => "A column name should be specified");
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255 }
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256
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257 sub apply {
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258 my ($this,$schema) = @_;
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259
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260 local $@;
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261
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262 return eval {
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263 $schema->GetTable($this->tableName)->RemoveColumn($this->columnName);
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264 return 1;
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265 } || 0;
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266 }
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267
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164
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268 #################################################
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163
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269
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165
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270 package IMPL::SQL::Schema::Traits::AlterTableChangeColumn;
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271 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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272 use IMPL::Class::Property;
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273
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164
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274 BEGIN {
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275 public property tableName => prop_get | owner_set;
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276 public property columnName => prop_get | owner_set;
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277 public property columnType => prop_get | owner_set;
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278 public property defaultValue => prop_get | owner_set;
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279 public property isNullable => prop_get | owner_set;
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280 public property options => prop_get | owner_set;
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281 }
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282
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283 sub CTOR {
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284 my ($this, $table,$column,%args) = @_;
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285
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286 $this->tableName($table) or die new IMPL::InvalidArgumentException(tableName => "A table name is required");
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287 $this->columnName($column) or die new IMPL::InvalidArgumentException(columnName => "A column name is required");
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288
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289 $this->$_($args{$_})
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290 for (grep exists $args{$_}, qw(columnType defaultValue isNullable options));
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291 }
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292
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293 sub apply {
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294 my ($this,$schema) = @_;
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295
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296 local $@;
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297
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298 return eval {
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299 my $column = $schema->GetTable($this->tableName)->GetColumn($this->columnName);
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300 $column->SetType($this->columnType) if $this->columnType;
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301 $column->SetNullable($this->isNullable) if $this->isNullable;
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302 $column->SetDefaultValue($this->defaultValue) if $this->defaultValue;
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303 $column->SetOptions($this->options) if $this->options;
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304
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305 return 1;
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306 } || 0;
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307 }
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308
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164
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309 #################################################
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163
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310
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165
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311 package IMPL::SQL::Schema::Traits::AlterTableAddConstraint;
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312 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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313 use IMPL::Class::Property;
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314 use IMPL::lang;
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315
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164
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316 BEGIN {
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317 public property tableName => prop_get | owner_set;
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318 public property constraint => prop_get | owner_set;
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319 }
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320
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164
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321 sub CTOR {
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322 my ($this,$table,$constraint) = @_;
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323
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324 $this->tableName($table) or die new IMPL::InvalidArgumentException( tableName => "A table name is required");
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325
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165
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326 die new IMPL::InvalidArgumentException(constaraint => "A valid IMPL::SQL::Schema::Traits::Constarint is required")
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327 unless is $constraint, typeof IMPL::SQL::Schema::Traits::Constraint;
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328
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329 $this->constraint($constraint);
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330 }
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331
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332 sub apply {
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333 my ($this,$schema) = @_;
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334
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335 local $@;
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336
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337 return eval {
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338 $schema->GetTable($this->tableName)->AddConstraint($this->constraint);
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339 return 1;
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340 } || 0;
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341
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342 }
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343
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164
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344 #################################################
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49
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345
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165
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346 package IMPL::SQL::Schema::Traits::AlterTableDropConstraint;
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347 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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348 use IMPL::Class::Property;
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349
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350 BEGIN {
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351 public property tableName => prop_get | owner_set;
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352 public property constraintName => prop_get | owner_set;
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353 }
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163
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354
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164
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355 sub CTOR {
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356 my ($this,$table,$constraint) = @_;
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357
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358 die new IMPL::InvalidArgumentException( tableName => "A table name is required" ) unless $table;
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359 die new IMPL::InvalidArgumentException( constraintName => "A constraint name is required" ) unless $constraint;
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360 }
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49
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361
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164
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362 sub apply {
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363 my ($this,$schema) = @_;
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364
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365 my $table = $schema->GetTable($this->tableName) or return 0;
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366
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367 return 0 unless $table->GetConstraint($this->constraintName);
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368
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369 $table->RemoveConstraint($this->constraintName);
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370 return 1;
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371 }
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163
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372
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49
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373
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374 1;
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163
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375
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376 __END__
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377
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378 =pod
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379
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380 =head1 NAME
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381
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382 C<IMPL::SQL::Traits> - Операции над объектками SQL схемы.
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383
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384 =head1 DESCRIPTION
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385
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386 Изменения схемы могу быть представлены в виде последовательности примитивных операций.
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164
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387 Правила выполнения последовательности примитывных действий могут варьироваться
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165
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388 в зависимости от процессора, который их выполняет. Например C<IMPL::SQL::Schema::Traits::Processor>.
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163
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389
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164
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390 Данные, которые содержаться в примитивных операциях не могут существовать независимо от схемы.
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391
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392 =head1 OPEARATIONS
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393
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394 =head2 General
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395
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396 Методы обще для всех примитивных операций.
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397
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398 =over
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399
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400 =item C<apply($schema)>
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401
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402 Пытается приминить операцию к указанной схеме.
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403
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404 Возвращаемое значение:
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405
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406 =over
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407
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408 =item C<true>
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409
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410 Операция успешно применена к схеме.
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411
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412 =item C<false>
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413
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414 Операция не может быть применена к схеме.
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415
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416 =back
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417
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418 =back
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419
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420 =head2 Primitive operations
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421
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422 =over
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423
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165
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424 =item C<IMPL::SQL::Schema::Traits::CreateTable>
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164
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425
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426 Создает таблицу
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427
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428 =over
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429
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430 =item C<CTOR($table)>
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431
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432 =item C<[get]table>
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433
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165
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434 C<IMPL::SQL::Schema::Traits::Table> - описание создаваемой таблицы
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164
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435
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436 =back
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437
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165
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438 =item C<IMPL::SQL::Schema::Traits::DropTable>
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164
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439
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440 Удалает таблицу по имени
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441
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442 =over
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443
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444 =item C<CTOR($tableName)>
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445
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446 =item C<[get]tableName>
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447
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448 Имя удаляемой таблицы
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449
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450 =back
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451
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165
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452 =item C<IMPL::SQL::Schema::Traits::RenameTable>
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164
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453
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454 =over
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455
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456 =item C<CTOR($tableName,$tableNewName)>
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457
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458 =item C<[get]tableName>
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459
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460 Имя таблицы, которую требуется переименовать
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461
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462 =item C<[get]tableNewName>
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463
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464 Новое имя таблицы
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465
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466 =back
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467
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165
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468 =item C<IMPL::SQL::Schema::Traits::AlterTableAddColumn>
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164
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469
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470 Добавляет столбец в таблицу
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471
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472 =over
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473
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474 =item C<CTOR($tableName,$column)>
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475
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476 =item C<[get]tableName>
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477
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478 Имя таблицы в которую нужно добавить столбец
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479
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480 =item C<[get]column>
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481
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165
|
482 C<IMPL::SQL::Schema::Traits::Column> - описание столбца который нужно добавить
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|
164
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483
|
|
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484 =back
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|
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485
|
|
165
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486 =item C<IMPL::SQL::Schema::Traits::AlterTableDropColumn>
|
|
164
|
487
|
|
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488 Удаляет столбец из таблицы
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|
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489
|
|
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490 =over
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|
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491
|
|
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492 =item C<CTOR($tableName,$columnName)>
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|
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493
|
|
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494 =item C<[get]tableName>
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|
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495
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|
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496 Имя таблицы в которой нужно удалить столбец
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|
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497
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498 =item C<[get]columnName>
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|
|
499
|
|
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500 Имя столбца для удаления
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501
|
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502 =back
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|
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503
|
|
165
|
504 =item C<IMPL::SQL::Schema::Traits::AlterTableChangeColumn>
|
|
164
|
505
|
|
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506 Меняет описание столбца
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|
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507
|
|
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508 =over
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|
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509
|
|
|
510 =item C<CTOR($tableName,$columnName,%args)>
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|
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511
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512 C<%args> - хеш, ключами которого являются оставшиеся свойства создаваемого объекта.
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|
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513
|
|
|
514 =item C<[get]tableName>
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|
|
515
|
|
|
516 Имя таблицы в которой находится столбец.
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|
|
517
|
|
|
518 =item C<[get]columnName>
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|
|
519
|
|
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520 Имя столбца для изменения
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|
|
521
|
|
|
522 =item C<[get]columnType>
|
|
|
523
|
|
|
524 Новый тип столбца. Не задан, если тип не меняется
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|
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525
|
|
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526 =item C<[get]defaultValue>
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|
|
527
|
|
|
528 Значение по умолчанию. Не задано, если не меняется
|
|
|
529
|
|
|
530 =item C<[get]isNullable>
|
|
|
531
|
|
|
532 Может ли столбец содержать C<NULL>. Не задано, если не меняется.
|
|
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533
|
|
|
534 =item C<[get]options>
|
|
|
535
|
|
|
536 Хеш опций, не задан, если опции не меняются
|
|
|
537
|
|
|
538 =back
|
|
|
539
|
|
165
|
540 =item C<IMPL::SQL::Schema::Traits::AlterTableAddConstraint>
|
|
164
|
541
|
|
|
542 Базовый класс для операций по добавлению ограничений
|
|
|
543
|
|
|
544 =over
|
|
|
545
|
|
|
546 =item C<CTOR($tableName,$constraint)>
|
|
|
547
|
|
|
548 =item C<[get]tableName>
|
|
|
549
|
|
|
550 Имя таблицы в которую добавляется ограничение.
|
|
|
551
|
|
|
552 =item C<[get]constraint>
|
|
|
553
|
|
165
|
554 C<IMPL::SQL::Schema::Traits::Constraint> - описние ограничения, которое нужно добавить.
|
|
164
|
555
|
|
|
556 =back
|
|
|
557
|
|
165
|
558 =item C<IMPL::SQL::Schema::Traits::AlterTableDropConstraint>
|
|
164
|
559
|
|
|
560 Удаляет ограничение на таблицу
|
|
|
561
|
|
|
562 =over
|
|
|
563
|
|
|
564 =item C<CTOR($tableName,$constraintName)>
|
|
|
565
|
|
|
566 =item C<[get]tableName>
|
|
|
567
|
|
|
568 Имя таблицы в которой требуется удалить ограничение.
|
|
|
569
|
|
|
570 =item C<[get]constraintName>
|
|
|
571
|
|
|
572 Имя ограничения для удаления.
|
|
|
573
|
|
|
574 =back
|
|
|
575
|
|
|
576 =back
|
|
163
|
577
|
|
|
578 =cut |
