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271
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1 package IMPL::SQL::Schema::MySQL::Formatter;
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2 use strict;
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3
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4 use IMPL::lang qw(is);
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5 use IMPL::require {
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6 Exception => 'IMPL::Exception',
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7 OpException => '-IMPL::InvalidOperationException',
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8 ArgException => '-IMPL::InvalidArgumentException',
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9 PrimaryKey => '-IMPL::SQL::Schema::Constraint::PrimaryKey',
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10 UniqueIndex => '-IMPL::SQL::Schema::Constraint::Unique',
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11 Index => '-IMPL::SQL::Schema::Constraint::Index',
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12 ForeignKey => '-IMPL::SQL::Schema::Constraint::ForeignKey',
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13 CharType => '-IMPL::SQL::Schema::MySQL::CharType',
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14 EnumType => '-IMPL::SQL::Schema::MySQL::EnumType',
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15 TraitsDropTable => '-IMPL::SQL::Schema::Traits::DropTable',
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16 TraitsCreateTable => '-IMPL::SQL::Schema::Traits::CreateTable',
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17 TraitsAlterTableDropConstraint => '-IMPL::SQL::Schema::Traits::AlterTableDropConstraint',
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18 TraitsAlterTableAddConstraint => '-IMPL::SQL::Schema::Traits::AlterTableAddConstraint',
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19 TraitsAlterTableDropColumn => '-IMPL::SQL::Schema::Traits::AlterTableDropColumn',
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20 TraitsAlterTableAddColumn => '-IMPL::SQL::Schema::Traits::AlterTableAddColumn',
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21 TraitsAlterTableChangeColumn => '-IMPL::SQL::Schema::Traits::AlterTableChangeColumn'
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22 };
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23
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24 our %TRAITS_FORMATS = (
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25 TraitsDropTable, 'FormatDropTable',
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26 TraitsCreateTable, 'FormatCreateTable',
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27 TraitsAlterTableDropConstraint, 'FormatAlterTableDropConstraint',
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28 TraitsAlterTableAddConstraint, 'FormatAlterTableAddConstraint',
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29 TraitsAlterTableDropColumn, 'FormatAlterTableDropColumn',
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30 TraitsAlterTableAddColumn, 'FormatAlterTableAddColumn',
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31 TraitsAlterTableChangeColumn, 'FormatAlterTableChangeColumn'
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32 );
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33
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34 sub quote {
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35 my $self = shift;
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36
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37 if (wantarray) {
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38 return map { my $str = $_; $str =~ s/'/''/g; "'$str'"; } @_;
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39 }
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40 else {
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41 return join '', map { my $str = $_; $str =~ s/'/''/g; "'$str'"; } @_;
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42 }
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43 }
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44
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45 sub quote_names {
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46 my $self = shift;
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47
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48 if (wantarray) {
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49 return map { my $str = $_; $str =~ s/`/``/g; "`$str`"; } @_;
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50 }
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51 else {
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52 return join '', map { my $str = $_; $str =~ s/`/``/g; "`$str`"; } @_;
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53 }
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54 }
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55
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56 sub formatTypeNameInteger {
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57 my ( $self, $type ) = @_;
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58
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59 return
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60 $type->name
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61 . ( $type->maxLength ? '(' . $type->maxLength . ')' : '' )
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62 . ( $type->unsigned ? ' UNSIGNED' : '' )
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63 . ( $type->zerofill ? ' ZEROFILL' : '' );
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64 }
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65
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66 sub formatTypeNameReal {
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67 my ( $self, $type ) = @_;
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68
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69 return $type->name
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70 . ( $type->maxLength
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71 ? '(' . $type->maxLength . ', ' . $type->scale . ')'
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72 : '' )
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73 . ( $type->unsigned ? ' UNSIGNED' : '' )
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74 . ( $type->zerofill ? ' ZEROFILL' : '' );
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75 }
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76
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77 sub formatTypeNameNumeric {
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78 my ( $self, $type ) = @_;
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79 $type->maxLength
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80 or die ArgException->new(
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81 type => 'The length and precission must be specified',
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82 $type->name
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83 );
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84 return $type->name
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85 . ( $type->maxLength
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86 ? '(' . $type->maxLength . ', ' . $type->scale . ')'
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87 : '' )
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88 . ( $type->unsigned ? ' UNSIGNED' : '' )
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89 . ( $type->zerofill ? ' ZEROFILL' : '' );
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90 }
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91
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92 sub formatTypeName {
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93 my ( $self, $type ) = @_;
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94 return $type->name;
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95 }
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96
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97 sub formatTypeNameChar {
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98 my ( $self, $type ) = @_;
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99
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100 return ($type->name . '('
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101 . $type->MaxLength . ')'
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102 . ( is( $type, CharType ) ? $type->encoding : '' ) );
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103 }
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104
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105 sub formatTypeNameVarChar {
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106 my ( $self, $type ) = @_;
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107
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108 return ($type->name . '('
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109 . $type->maxLength . ')'
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110 . ( is( $type, CharType ) ? $type->encoding : '' ) );
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111 }
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112
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113 sub formatTypeNameEnum {
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114 my ( $self, $type ) = @_;
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115
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116 die ArgException->new( type => 'Invalid enum type' )
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117 unless is( $type, EnumType );
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118 return ($type->name . '('
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119 . join( ',', map { $self->quote($_) } $type->enumValues )
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120 . ')' );
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121 }
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122
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123 sub formatStringValue {
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124 my ( $self, $value ) = @_;
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125
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126 if ( ref $value eq 'SCALAR' ) {
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127 return $$value;
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128 }
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129 else {
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130 return $self->quote($value);
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131 }
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132 }
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133
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134 sub formatNumberValue {
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135 my ( $self, $value ) = @_;
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136
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137 if ( ref $value eq 'SCALAR' ) {
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138 return $$value;
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139 }
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140 else {
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141 $value =~ /^((\+|-)\s*)?\d+(\.\d+)?(e(\+|-)?\d+)?$/
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142 or die ArgException->new(
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143 value => 'The specified value isn\'t a valid number',
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144 $value
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145 );
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146 return $value;
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147 }
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148 }
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149
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150 our %TYPES_FORMATS = (
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151 TINYINT => {
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152 formatType => \&formatTypeNameInteger,
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153 formatValue => \&formatNumberValue
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154 },
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155 SMALLINT => {
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156 formatType => \&formatTypeNameInteger,
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157 formatValue => \&formatNumberValue
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158 },
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159 MEDIUMINT => {
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160 formatType => \&formatTypeNameInteger,
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161 formatValue => \&formatNumberValue
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162 },
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163 INT => {
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164 formatType => \&formatTypeNameInteger,
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165 formatValue => \&formatNumberValue
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166 },
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167 INTEGER => {
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168 formatType => \&formatTypeNameInteger,
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169 formatValue => \&formatNumberValue
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170 },
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171 BIGINT => {
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172 formatType => \&formatTypeNameInteger,
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173 formatValue => \&formatNumberValue
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174 },
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175 REAL => {
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176 formatType => \&formatTypeNameReal,
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177 formatValue => \&formatNumberValue
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178 },
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179 DOUBLE => {
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180 formatType => \&formatTypeNameReal,
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181 formatValue => \&formatNumberValue
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182 },
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183 FLOAT => {
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184 formatType => \&formatTypeNameReal,
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185 formatValue => \&formatNumberValue
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186 },
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187 DECIMAL => {
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188 formatType => \&formatTypeNameNumeric,
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189 formatValue => \&formatNumberValue
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190 },
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191 NUMERIC => {
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192 formatType => \&formatTypeNameNumeric,
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193 formatValue => \&formatNumberValue
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194 },
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195 DATE => {
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196 formatType => \&formatTypeName,
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197 formatValue => \&formatStringValue
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198 },
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199 TIME => {
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200 formatType => \&formatTypeName,
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201 formatValue => \&formatStringValue
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202 },
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203 TIMESTAMP => {
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204 formatType => \&formatTypeName,
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205 formatValue => \&formatStringValue
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206 },
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207 DATETIME => {
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208 formatType => \&formatTypeName,
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209 formatValue => \&formatStringValue
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210 },
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211 CHAR => {
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212 formatType => \&formatTypeNameChar,
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213 formatValue => \&formatStringValue
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214 },
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215 VARCHAR => {
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216 formatType => \&formatTypeNameVarChar,
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217 formatValue => \&formatStringValue
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218 },
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219 TINYBLOB => {
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220 formatType => \&formatTypeName,
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221 formatValue => \&formatStringValue
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222 },
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223 BLOB => {
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224 formatType => \&formatTypeName,
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225 formatValue => \&formatStringValue
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226 },
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227 MEDIUMBLOB => {
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228 formatType => \&formatTypeName,
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229 formatValue => \&formatStringValue
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230 },
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231 LONGBLOB => {
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232 formatType => \&formatTypeName,
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233 formatValue => \&formatStringValue
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234 },
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235 TINYTEXT => {
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236 formatType => \&formatTypeName,
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237 formatValue => \&formatStringValue
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238 },
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239 TEXT => {
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240 formatType => \&formatTypeName,
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241 formatValue => \&formatStringValue
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242 },
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243 MEDIUMTEXT => {
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244 formatType => \&formatTypeName,
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245 formatValue => \&formatStringValue
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246 },
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247 LONGTEXT => {
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248 formatType => \&formatTypeName,
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249 formatValue => \&formatStringValue
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250 },
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251 ENUM => {
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252 formatType => \&formatTypeNameEnum,
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253 formatValue => \&formatStringValue
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254 },
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255 SET => {
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256 formatType => \&formatTypeNameEnum,
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257 formatValue => \&formatStringValue
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258 }
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259 );
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260
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261 sub FormatTypeName {
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262 my ( $self, $type ) = @_;
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263
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264 my $fn = $TYPES_FORMATS{ $type->name }{formatType}
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265 or die ArgException->new( type => "The specified type is unknown",
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266 $type->name );
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267
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268 return $self->$fn($type);
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269 }
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270
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271 sub FormatValue {
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272 my ( $self, $value, $type ) = @_;
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273
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274 my $fn = $TYPES_FORMATS{ $type->name }{formatValue}
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275 or die ArgException->new( type => "The specified type is unknown",
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276 $type->name );
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277
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278 return $self->$fn( $value, $type );
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279 }
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280
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281 sub FormatColumn {
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282 my ( $self, $column ) = @_;
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283
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284 my @parts = (
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285 $self->quote_names( $column->{name} ),
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286 $self->FormatTypeName( $column->{type} ),
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287 $column->{isNullable} ? 'NULL' : 'NOT NULL'
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288 );
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289
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290 push @parts, $self->FormatValue( $column->{defaultValue}, $column->{type} )
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291 if $column->{defaultValue};
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292
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293 push @parts, 'AUTO_INCREMENT'
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294 if $column->{tag} and $column->{tag}->{auto_increment};
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295
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296 return join ' ', @parts;
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297 }
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298
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299 sub FormatCreateTable {
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300 my ( $self, $op ) = @_;
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301
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302 my $table = $op->table;
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303
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304 my @lines;
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305 my @body;
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306
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307 push @lines, "CREATE TABLE " . $self->quote_names($table->{name}) . "(";
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308
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309 push @body, map { " " . $self->FormatColumn($_) } @{ $table->{columns} }
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310 if $table->{columns};
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311
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312 push @body, map { " " . $self->FormatConstraint($_) } @{ $table->{constraints} }
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313 if $table->{constraints};
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314
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315 push @lines, join(",\n", @body);
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316
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317 push @lines, ");";
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318
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319 return join "\n", @lines;
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320 }
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321
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322 sub FormatDropTable {
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323 my ( $self, $op ) = @_;
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324
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325 return join ' ', 'DROP TABLE', $self->quote_names( $op->tableName ), ';';
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326 }
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327
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328 sub FormatRenameTable {
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329 my ( $self, $op ) = @_;
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330
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331 return join ' ',
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332 'ALTER TABLE',
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333 $self->quote_names( $op->tableName ),
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334 'RENAME TO',
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335 $self->quote_names( $op->tableNewName ),
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336 ';';
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337 }
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338
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339 sub FormatAlterTableAddColumn {
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340 my ( $self, $op, $schema ) = @_;
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341
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342 my @parts = (
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343 'ALTER TABLE',$self->quote_names($op->tableName), 'ADD COLUMN',
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344 $self->FormatColumn( $op->column )
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345 );
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346
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347 if ( defined $op->position ) {
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348
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349 # mysql supports column reordering
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350 # the new location is specified relative to the previous column
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351 # to determine the name of the previous column we need to ask the schema
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352
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353 my $table = $schema->GetTable( $op->tableName );
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354
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355 if ( $op->position == 0 ) {
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356 push @parts, 'FIRST';
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357 }
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358 else {
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359 push @parts, 'AFTER';
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360
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361 my $prevColumn = $table->GetColumnAt( $op->position - 1 );
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362 push @parts, $self->quote_names( $prevColumn->{name} );
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363 }
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364 }
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365
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366 push @parts, ';';
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367
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368 return join ' ', @parts;
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369 }
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370
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371 sub FormatAlterTableDropColumn {
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372 my ( $self, $op ) = @_;
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373
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374 return join ' ',
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375 'ALTER TABLE',
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376 $self->quote_names( $op->tableName ),
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377 'DROP COLUMN',
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378 $self->quote_names( $op->columnName ),
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379 ';';
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380 }
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381
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382 sub FormatAlterTableChangeColumn {
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383 my ( $self, $op, $schema ) = @_;
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384
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385 my $table = $schema->GetTable( $op->tableName );
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386 my $column = $table->GetColumn( $op->columnName );
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387
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388 my @parts = (
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389 'ALTER TABLE',
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390 $self->quote_names( $op->tableName ),
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391 'MODIFY COLUMN',
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392 $self->quote_names( $op->columnName ),
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393 $self->FormatColumn( $self->_Column2Traits($column) )
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394 );
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395
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396 if ( defined $op->position ) {
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397
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398 # mysql supports column reordering
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399 # the new location is specified relative to the previous column
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400 # to determine the name of the previous column we need to ask the schema
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401
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402 if ( $op->position == 0 ) {
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403 push @parts, 'FIRST';
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404 }
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405 else {
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406 push @parts, 'AFTER';
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407
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408 my $prevColumn = $table->GetColumnAt( $op->position - 1 );
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409 push @parts, $self->quote_names( $prevColumn->{name} );
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410 }
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411 }
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412
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413 push @parts, ';';
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414 return join ' ', @parts;
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415 }
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416
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417 sub FormatConstraint {
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418 my ($self,$constraint) = @_;
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419
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420 my @fkRules =
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421 ( 'RESTRICT', 'CASCADE', 'SET NULL', 'SET DEFAULT', 'NO ACTION' );
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422
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423 my @parts;
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424
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425 if ( $constraint->constraintClass eq ForeignKey ) {
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426 push @parts,
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427 'CONSTRAINT',
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428 $self->quote_names( $constraint->{name} ),
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429 'FOREIGN KEY',
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430 $self->quote_names( $constraint->{name} ),
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431 '(',
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432 join( ', ', $self->quote_names( @{ $constraint->{columns} || [] } ) ),
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433 ')',
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434 'REFERENCES', $self->quote_names( $constraint->{foreignTable} ), '(',
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435 join( ', ',
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436 $self->quote_names( @{ $constraint->{foreignColumns} || [] } ) ),
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437 ')';
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438
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439 if ( my $rule = uc( $constraint->{onDelete} ) ) {
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440 grep $_ eq $rule, @fkRules
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441 or die Exception->new( "Invalid onDelete rule specified",
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442 $constraint->{name}, $rule );
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443
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444 push @parts, 'ON DELETE', $rule;
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445 }
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446
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447 if ( my $rule = uc( $constraint->{onUpdate} ) ) {
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448 grep $_ eq $rule, @fkRules
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449 or die Exception->new( "Invalid onUpdate rule specified",
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450 $constraint->{name}, $rule );
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451
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452 push @parts, 'ON UPDATE', $rule;
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453 }
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454
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455 }
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456 else {
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457 if ( $constraint->constraintClass eq PrimaryKey ) {
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458 push @parts, 'PRIMARY KEY';
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459
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460 }
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461 elsif ( $constraint->constraintClass eq UniqueIndex ) {
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462 push @parts, 'UNIQUE', $self->quote_names( $constraint->{name} );
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463 }
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464 elsif ( $constraint->constraintClass eq Index ) {
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465 push @parts, 'INDEX', $self->quote_names( $constraint->{name} );
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466 }
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467 else {
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468 die Exception->new( 'Invalid constraint type',
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469 $constraint->constraintClass );
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470 }
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471
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472 push @parts,
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473 '(',
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474 join( ', ', $self->quote_names( @{ $constraint->{columns} || [] } ) ),
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475 ')';
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476 }
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477
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478
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479 return join ' ', @parts;
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480 }
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481
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482 sub FormatAlterTableAddConstraint {
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483 my ( $self, $op ) = @_;
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484
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485 return join(' ',
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486 'ALTER TABLE',
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487 $self->quote_names( $op->tableName ),
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488 'ADD',
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489 $self->FormatConstraint($op->constraint),
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490 ';'
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491 );
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492 }
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493
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494 sub FormatAlterTableDropConstraint {
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495 my ( $self, $op, $constraintType ) = @_;
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496
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497 my @parts = ( 'ALTER TABLE', $self->quote_names( $op->tableName ), 'DROP' );
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498
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499 if ( $constraintType eq PrimaryKey ) {
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500 push @parts, 'PRIMARY KEY';
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501 }
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502 elsif ( $constraintType eq ForeignKey ) {
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503 push @parts, 'FOREIGN KEY', $self->quote_names( $op->constraintName );
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504 }
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505 elsif ( $constraintType eq UniqueIndex or $constraintType eq Index ) {
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506 push @parts, 'INDEX', $self->quote_names( $op->constraintName );
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507 }
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508 else {
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509 die Exception->new(
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510 'Invalid constraint type', $op->tableName,
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511 $op->constraintName, $constraintType
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512 );
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513 }
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514
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515 push @parts, ';';
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516
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517 return join ' ', @parts;
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518 }
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519
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520 sub Format {
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|
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521 my $self = shift;
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|
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522 my ($op) = @_;
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|
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523
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|
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524 my $formatter = $TRAITS_FORMATS{ref $op}
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|
|
525 or die OpException->new("Don't know how to format the specified operation", $op);
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526
|
|
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527 $self->$formatter(@_);
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528 }
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529
|
|
|
530 sub _Column2Traits {
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|
|
531 my ( $self, $column, %options ) = @_;
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|
|
532
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|
|
533 return new IMPL::SQL::Schema::Traits::Column(
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|
|
534 $column->name,
|
|
|
535 $column->type,
|
|
|
536 isNullable => $column->isNullable,
|
|
|
537 defaultValue => $column->defaultValue,
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|
|
538 tag => $column->tag,
|
|
|
539 %options
|
|
|
540 );
|
|
|
541 }
|
|
|
542
|
|
|
543 1;
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|
|
544
|
|
|
545 __END__
|
|
|
546
|
|
|
547 =pod
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|
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548
|
|
|
549 =head1 NAME
|
|
|
550
|
|
|
551 C<IMPL::SQL::Traits::MysqlFormatter> - преобразует операции над схемой в C<SQL>
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|
|
552 выражения.
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|
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553
|
|
|
554 =head1 DESCRIPTION
|
|
|
555
|
|
|
556 Используется для форматирования операций изменения схемы БД. Осуществляет
|
|
|
557 правильное экранирование имен, форматирование значений, имен типов данных.
|
|
|
558
|
|
|
559 =cut
|
