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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
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168
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8 # required for use with typeof operator
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9 use IMPL::SQL::Schema::Constraint::PrimaryKey();
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10 use IMPL::SQL::Schema::Constraint::Index();
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11 use IMPL::SQL::Schema::Constraint::Unique();
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12 use IMPL::SQL::Schema::Constraint::ForeignKey();
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13
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164
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14 ###################################################
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15
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165
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16 package IMPL::SQL::Schema::Traits::Table;
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17 use base qw(IMPL::Object::Fields);
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18
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19 use fields qw(
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20 name
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21 columns
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22 constraints
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23 options
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164
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24 );
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25
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26 sub CTOR {
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194
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27 my ($this,$table,$columns,$constraints,$options) = @_;
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28
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29 $this->{name} = $table or die new IMPL::InvalidArgumentException(table => "A table name is required");
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30 $this->{columns} = $columns if defined $columns;
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31 $this->{constraints} = $constraints if defined $constraints;
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32 $this->{options} = $options if defined $options;
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164
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33 }
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34
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35 ###################################################
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36
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165
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37 package IMPL::SQL::Schema::Traits::Column;
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38 use base qw(IMPL::Object::Fields);
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39
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40 use fields qw(
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41 name
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42 type
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43 isNullable
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44 defaultValue
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45 tag
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164
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46 );
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47
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48 sub CTOR {
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194
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49 my ($this, $name, $type, %args) = @_;
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50
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51 $this->{name} = $name or die new IMPL::InvalidArgumentException("name");
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52 $this->{type} = $type or die new IMPL::InvalidArgumentException("type");
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53 $this->{isNullable} = $args{isNullable} if exists $args{isNullable};
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54 $this->{defaultValue} = $args{defaultValue} if exists $args{defaultValue};
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55 $this->{tag} = $args{tag} if exists $args{tag};
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164
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56 }
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57
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58 ##################################################
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59
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165
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60 package IMPL::SQL::Schema::Traits::Constraint;
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61 use base qw(IMPL::Object::Fields);
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62
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63 use fields qw(
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64 name
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65 columns
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66 );
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67
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68 sub CTOR {
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69 my ($this, $name, $columns) = @_;
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70
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71 $this->{name} = $name;
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72 $this->{columns} = $columns; # list of columnNames
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168
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73 }
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74
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75 sub constraintClass {
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76 die new IMPL::NotImplementedException();
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77 }
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78
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79 ##################################################
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80
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81 package IMPL::SQL::Schema::Traits::PrimaryKey;
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82
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83 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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84
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85 __PACKAGE__->PassThroughArgs;
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86
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87 use constant { constraintClass => typeof IMPL::SQL::Schema::Constraint::PrimaryKey };
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88
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164
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89 ##################################################
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90
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165
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91 package IMPL::SQL::Schema::Traits::Index;
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92
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165
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93 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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94
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95 __PACKAGE__->PassThroughArgs;
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96
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97 use constant { constraintClass => typeof IMPL::SQL::Schema::Constraint::Index };
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98
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164
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99 ##################################################
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100
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165
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101 package IMPL::SQL::Schema::Traits::Unique;
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102
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103 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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104
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105 __PACKAGE__->PassThroughArgs;
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106
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107 use constant { constraintClass => typeof IMPL::SQL::Schema::Constraint::Unique };
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108
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109 ##################################################
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110
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165
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111 package IMPL::SQL::Schema::Traits::ForeignKey;
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112
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113 use base qw(IMPL::SQL::Schema::Traits::Constraint);
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114 use fields qw(
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115 foreignTable
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116 foreignColumns
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117 );
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118
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119 use constant { constraintClass => typeof IMPL::SQL::Schema::Constraint::ForeignKey };
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120
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121 our %CTOR = (
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122 'IMPL::SQL::Schema::Traits::Constraint' => sub { @_[0..1] }
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123 );
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124
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125 sub CTOR {
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126 my ($this,$foreignTable,$foreignColumns) = @_[0,3,4];
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127
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128 $this->{foreignTable} = $foreignTable;
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129 $this->{foreignColunms} = $foreignColumns;
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164
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130 }
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131
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132
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133 ##################################################
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134
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165
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135 package IMPL::SQL::Schema::Traits::CreateTable;
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136
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137 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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138 use IMPL::Class::Property;
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139 use IMPL::lang;
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140
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141 BEGIN {
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142 public property table => prop_get | owner_set;
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143 }
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144
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145 sub CTOR {
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146 my ($this,$table) = @_;
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147
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148 die new IMPL::InvalidArgumentException("table", "An object of IMPL::SQL::Schema::Traits::Table type is required")
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149 unless is $table, typeof IMPL::SQL::Schema::Traits::Table;
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150
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151 $this->table($table);
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164
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152 }
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153
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154 sub apply {
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155 my ($this,$schema) = @_;
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156
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157 return 0 if ( $schema->GetTable( $this->table->{name} ) );
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158
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159 $schema->AddTable($this->table);
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160 return 1;
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164
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161 }
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162
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163 ##################################################
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164
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165
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165 package IMPL::SQL::Schema::Traits::DropTable;
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166 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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167 use IMPL::Class::Property;
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168
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169 BEGIN {
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170 public property tableName => prop_get | owner_set;
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171 }
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172
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173 sub CTOR {
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174 my ($this,$tableName) = @_;
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175
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176 $this->tableName($tableName) or die new IMPL::InvalidArgumentException("tableName is required");
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177 }
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178
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179 sub apply {
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180 my ($this,$schema) = @_;
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181
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182 return 0 if $schema->GetTable( $this->tableName );
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183
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184 $schema->RemoveTable($this->tableName);
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185
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186 return 1;
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164
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187 }
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188
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189 ##################################################
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190
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165
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191 package IMPL::SQL::Schema::Traits::RenameTable;
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192 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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193 use IMPL::Class::Property;
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49
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194
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195 BEGIN {
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194
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196 public property tableName => prop_get | owner_set;
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197 public property tableNewName => prop_get | owner_set;
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198 }
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199
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200 sub CTOR {
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194
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201 my ($this, $oldName, $newName) = @_;
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202
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203 $this->tableName($oldName) or die new IMPL::InvalidArgumentException("A table name is required");
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204 $this->tableNewName($newName) or die new IMPL::InvalidArgumentException("A new table name is required");
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164
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205 }
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206
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207 sub apply {
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194
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208 my ($this,$schema) = @_;
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209
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210 return 0 if not $schema->GetTable($this->tableName) or $schema->GetTable($this->tableNewName);
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211
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212 $this->RenameTable($this->tableName, $this->tableNewName);
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213
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214 return 1;
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164
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215 }
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216
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217 #################################################
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218
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165
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219 package IMPL::SQL::Schema::Traits::AlterTableAddColumn;
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220 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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221 use IMPL::Class::Property;
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222 use IMPL::lang;
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223
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224 BEGIN {
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225 public property tableName => prop_get | owner_set;
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226 public property column => prop_get | owner_set;
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49
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227 }
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228
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229 sub CTOR {
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230 my ($this,$tableName,$column) = @_;
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231
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232 $this->tableName($tableName) or die new IMPL::InvalidArgumentException("A table name is required");
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233
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234 die new IMPL::InvalidArgumentException("A column should be a IMPL::SQL::Schema::Traits::Column object")
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235 unless is $column, typeof IMPL::SQL::Schema::Traits::Column;
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236
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237 $this->column($column);
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238 }
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239
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240 sub apply {
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241 my ($this,$schema) = @_;
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242
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243 my $table = $schema->GetTable($this->tableName) or return 0;
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244
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245 return 0 if $table->GetColumn( $this->column->{name} );
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246
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247 $table->AddColumn($this->column);
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248
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249 return 1;
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164
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250 }
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251
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252 #################################################
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253
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254 package IMPL::SQL::Schema::Traits::AlterTableDropColumn;
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255 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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256 use IMPL::Class::Property;
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257
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258 BEGIN {
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259 public property tableName => prop_get | owner_set;
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260 public property columnName => prop_get | owner_set;
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261 }
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262
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263 sub CTOR {
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194
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264 my ($this,$table,$column) = @_;
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265
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266 $this->tableName($table) or die new IMPL::InvalidArgumentException(tableName => "A table name should be specified");
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267 $this->columnName($column) or die new IMPL::InvalidArgumentException(columnName => "A column name should be specified");
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164
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268 }
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269
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270 sub apply {
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194
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271 my ($this,$schema) = @_;
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272
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273 local $@;
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274
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275 return eval {
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276 $schema->GetTable($this->tableName)->RemoveColumn($this->columnName);
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277 return 1;
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278 } || 0;
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49
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279 }
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280
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164
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281 #################################################
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163
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282
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165
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283 package IMPL::SQL::Schema::Traits::AlterTableChangeColumn;
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284 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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285 use IMPL::Class::Property;
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49
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286
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164
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287 BEGIN {
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194
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288 public property tableName => prop_get | owner_set;
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289 public property columnName => prop_get | owner_set;
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290 public property columnType => prop_all;
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291 public property defaultValue => prop_all;
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292 public property isNullable => prop_all;
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293 public property options => prop_all; # hash diff format, (keys have a prefix '+' - add or update value, '-' remove value)
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164
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294 }
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295
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164
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296 sub CTOR {
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194
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297 my ($this, $table,$column,%args) = @_;
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298
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299 $this->tableName($table) or die new IMPL::InvalidArgumentException(tableName => "A table name is required");
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300 $this->columnName($column) or die new IMPL::InvalidArgumentException(columnName => "A column name is required");
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301
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302 $this->$_($args{$_})
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303 for (grep exists $args{$_}, qw(columnType defaultValue isNullable options));
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164
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304 }
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305
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164
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306 sub apply {
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194
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307 my ($this,$schema) = @_;
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308
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309 local $@;
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310
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311 return eval {
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312 my $column = $schema->GetTable($this->tableName)->GetColumn($this->columnName);
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313 $column->SetType($this->columnType) if defined $this->columnType;
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314 $column->SetNullable($this->isNullable) if defined $this->isNullable;
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315 $column->SetDefaultValue($this->defaultValue) if defined $this->defaultValue;
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316 $column->SetOptions($this->options) if defined $this->options;
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317
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318 return 1;
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319 } || 0;
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164
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320 }
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321
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164
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322 #################################################
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163
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323
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165
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324 package IMPL::SQL::Schema::Traits::AlterTableAddConstraint;
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325 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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326 use IMPL::Class::Property;
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327 use IMPL::lang;
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49
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328
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164
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329 BEGIN {
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194
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330 public property tableName => prop_get | owner_set;
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331 public property constraint => prop_get | owner_set;
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164
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332 }
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333
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164
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334 sub CTOR {
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194
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335 my ($this,$table,$constraint) = @_;
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336
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337 $this->tableName($table) or die new IMPL::InvalidArgumentException( tableName => "A table name is required");
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338
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339 die new IMPL::InvalidArgumentException(constaraint => "A valid IMPL::SQL::Schema::Traits::Constarint is required")
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340 unless is $constraint, typeof IMPL::SQL::Schema::Traits::Constraint;
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341
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342 $this->constraint($constraint);
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164
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343 }
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49
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344
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164
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345 sub apply {
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194
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346 my ($this,$schema) = @_;
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347
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348 local $@;
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349
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350 return eval {
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351 $schema->GetTable($this->tableName)->AddConstraint($this->constraint->constraintClass, $this->constraint);
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352 return 1;
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353 } || 0;
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354
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164
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355 }
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49
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356
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164
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357 #################################################
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49
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358
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165
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359 package IMPL::SQL::Schema::Traits::AlterTableDropConstraint;
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360 use parent qw(-norequire IMPL::SQL::Schema::Traits);
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164
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361 use IMPL::Class::Property;
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362
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363 BEGIN {
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194
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364 public property tableName => prop_get | owner_set;
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365 public property constraintName => prop_get | owner_set;
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164
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366 }
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163
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367
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164
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368 sub CTOR {
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194
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369 my ($this,$table,$constraint) = @_;
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370
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371 die new IMPL::InvalidArgumentException( tableName => "A table name is required" ) unless $table;
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372 die new IMPL::InvalidArgumentException( constraintName => "A constraint name is required" ) unless $constraint;
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373
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374 $this->tableName($table);
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375 $this->constraintName($constraint);
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164
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376 }
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49
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377
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164
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378 sub apply {
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194
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379 my ($this,$schema) = @_;
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380
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381 my $table = $schema->GetTable($this->tableName) or return 0;
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382
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383 return 0 unless $table->GetConstraint($this->constraintName);
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384
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385 $table->RemoveConstraint($this->constraintName);
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386 return 1;
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164
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387 }
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163
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388
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49
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389
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390 1;
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163
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391
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392 __END__
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393
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394 =pod
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395
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396 =head1 NAME
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397
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180
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398 C<IMPL::SQL::Traits> - Операции над объектками SQL схемы.
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163
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399
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400 =head1 DESCRIPTION
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401
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180
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402 Изменения схемы могу быть представлены в виде последовательности примитивных операций.
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403 Правила выполнения последовательности примитывных действий могут варьироваться
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404 в зависимости от процессора, который их выполняет. Например C<IMPL::SQL::Schema::Traits::Processor>.
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163
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405
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180
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406 Данные, которые содержаться в примитивных операциях не могут существовать независимо от схемы.
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164
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407
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408 =head1 OPEARATIONS
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409
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410 =head2 General
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411
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180
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412 Методы обще для всех примитивных операций.
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164
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413
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414 =over
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415
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416 =item C<apply($schema)>
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417
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180
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418 Пытается приминить операцию к указанной схеме.
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164
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419
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180
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420 Возвращаемое значение:
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164
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421
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422 =over
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423
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424 =item C<true>
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425
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180
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426 Операция успешно применена к схеме.
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164
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427
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428 =item C<false>
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429
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180
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430 Операция не может быть применена к схеме.
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164
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431
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432 =back
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433
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434 =back
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435
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436 =head2 Primitive operations
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437
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438 =over
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439
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165
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440 =item C<IMPL::SQL::Schema::Traits::CreateTable>
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164
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441
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180
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442 Создает таблицу
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164
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443
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444 =over
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445
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446 =item C<CTOR($table)>
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447
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448 =item C<[get]table>
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449
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180
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450 C<IMPL::SQL::Schema::Traits::Table> - описание создаваемой таблицы
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164
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451
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452 =back
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453
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165
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454 =item C<IMPL::SQL::Schema::Traits::DropTable>
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164
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455
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180
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456 Удалает таблицу по имени
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164
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457
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458 =over
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459
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460 =item C<CTOR($tableName)>
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461
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462 =item C<[get]tableName>
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463
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180
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464 Имя удаляемой таблицы
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164
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465
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466 =back
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467
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165
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468 =item C<IMPL::SQL::Schema::Traits::RenameTable>
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164
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469
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470 =over
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471
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472 =item C<CTOR($tableName,$tableNewName)>
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473
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474 =item C<[get]tableName>
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475
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180
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476 Имя таблицы, которую требуется переименовать
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164
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477
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478 =item C<[get]tableNewName>
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479
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180
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480 Новое имя таблицы
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164
|
481
|
|
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482 =back
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|
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483
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165
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484 =item C<IMPL::SQL::Schema::Traits::AlterTableAddColumn>
|
|
164
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485
|
|
180
|
486 Добавляет столбец в таблицу
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|
164
|
487
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|
|
488 =over
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489
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490 =item C<CTOR($tableName,$column)>
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|
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491
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492 =item C<[get]tableName>
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493
|
|
180
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494 Имя таблицы в которую нужно добавить столбец
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|
164
|
495
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|
496 =item C<[get]column>
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|
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497
|
|
180
|
498 C<IMPL::SQL::Schema::Traits::Column> - описание столбца который нужно добавить
|
|
164
|
499
|
|
|
500 =back
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|
|
501
|
|
165
|
502 =item C<IMPL::SQL::Schema::Traits::AlterTableDropColumn>
|
|
164
|
503
|
|
180
|
504 Удаляет столбец из таблицы
|
|
164
|
505
|
|
|
506 =over
|
|
|
507
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|
|
508 =item C<CTOR($tableName,$columnName)>
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|
|
509
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510 =item C<[get]tableName>
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|
|
511
|
|
180
|
512 Имя таблицы в которой нужно удалить столбец
|
|
164
|
513
|
|
|
514 =item C<[get]columnName>
|
|
|
515
|
|
180
|
516 Имя столбца для удаления
|
|
164
|
517
|
|
|
518 =back
|
|
|
519
|
|
165
|
520 =item C<IMPL::SQL::Schema::Traits::AlterTableChangeColumn>
|
|
164
|
521
|
|
180
|
522 Меняет описание столбца
|
|
164
|
523
|
|
|
524 =over
|
|
|
525
|
|
|
526 =item C<CTOR($tableName,$columnName,%args)>
|
|
|
527
|
|
180
|
528 C<%args> - хеш, ключами которого являются оставшиеся свойства создаваемого объекта.
|
|
164
|
529
|
|
|
530 =item C<[get]tableName>
|
|
|
531
|
|
180
|
532 Имя таблицы в которой находится столбец.
|
|
164
|
533
|
|
|
534 =item C<[get]columnName>
|
|
|
535
|
|
180
|
536 Имя столбца для изменения
|
|
164
|
537
|
|
|
538 =item C<[get]columnType>
|
|
|
539
|
|
180
|
540 Новый тип столбца. Не задан, если тип не меняется
|
|
164
|
541
|
|
|
542 =item C<[get]defaultValue>
|
|
|
543
|
|
180
|
544 Значение по умолчанию. Не задано, если не меняется
|
|
164
|
545
|
|
|
546 =item C<[get]isNullable>
|
|
|
547
|
|
180
|
548 Может ли столбец содержать C<NULL>. Не задано, если не меняется.
|
|
164
|
549
|
|
|
550 =item C<[get]options>
|
|
|
551
|
|
180
|
552 Хеш опций, не задан, если опции не меняются
|
|
164
|
553
|
|
|
554 =back
|
|
|
555
|
|
165
|
556 =item C<IMPL::SQL::Schema::Traits::AlterTableAddConstraint>
|
|
164
|
557
|
|
180
|
558 Базовый класс для операций по добавлению ограничений
|
|
164
|
559
|
|
|
560 =over
|
|
|
561
|
|
|
562 =item C<CTOR($tableName,$constraint)>
|
|
|
563
|
|
|
564 =item C<[get]tableName>
|
|
|
565
|
|
180
|
566 Имя таблицы в которую добавляется ограничение.
|
|
164
|
567
|
|
|
568 =item C<[get]constraint>
|
|
|
569
|
|
180
|
570 C<IMPL::SQL::Schema::Traits::Constraint> - описние ограничения, которое нужно добавить.
|
|
164
|
571
|
|
|
572 =back
|
|
|
573
|
|
165
|
574 =item C<IMPL::SQL::Schema::Traits::AlterTableDropConstraint>
|
|
164
|
575
|
|
180
|
576 Удаляет ограничение на таблицу
|
|
164
|
577
|
|
|
578 =over
|
|
|
579
|
|
|
580 =item C<CTOR($tableName,$constraintName)>
|
|
|
581
|
|
|
582 =item C<[get]tableName>
|
|
|
583
|
|
180
|
584 Имя таблицы в которой требуется удалить ограничение.
|
|
164
|
585
|
|
|
586 =item C<[get]constraintName>
|
|
|
587
|
|
180
|
588 Имя ограничения для удаления.
|
|
164
|
589
|
|
|
590 =back
|
|
|
591
|
|
|
592 =back
|
|
163
|
593
|
|
180
|
594 =cut
|
