Mercurial > pub > Impl

annotate Lib/IMPL/SQL/Schema/MySQL/Processor.pm @ 351:cfd7570c2af2

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working on TTView: created TTView class for rendering models
author cin
date Tue, 08 Oct 2013 17:40:35 +0400
parents 2f06250bab5f
children
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1 package IMPL::SQL::Schema::MySQL::Processor;
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2 use strict;
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3
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4 use mro;
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5 use IMPL::Const qw(:prop);
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6 use IMPL::declare {
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7 require => {
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8 MySQLFormatter => 'IMPL::SQL::Schema::MySQL::Formatter',
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9 AlterTableDropConstraint => '-IMPL::SQL::Schema::Traits::AlterTableDropConstraint',
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10 AlterTableAddConstraint => '-IMPL::SQL::Schema::Traits::AlterTableAddConstraint',
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11 DropTable => '-IMPL::SQL::Schema::Traits::DropTable',
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12 PrimitiveDropTable => '-IMPL::SQL::Schema::MySQL::Processor::PrimitiveDropTable',
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13 CreateTable => '-IMPL::SQL::Schema::Traits::CreateTable',
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14 Table => '-IMPL::SQL::Schema::Traits::Table',
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15 ForeignKey => '-IMPL::SQL::Schema::Traits::ForeignKey',
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16
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17 },
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18 base => [
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19 'IMPL::SQL::Schema::Processor' => sub { $_[0] }
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20 ],
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21 props => [
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22 formatter => PROP_RO,
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23 sqlBatch => PROP_RO
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24 ]
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25 };
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26 use IMPL::lang qw(is);
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27
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28 sub CTOR {
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29 my ( $this, $schema, %opts ) = @_;
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30
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31 $this->formatter( $opts{formatter} || MySQLFormatter );
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32 $this->sqlBatch([]);
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33 }
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34
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35 sub AddSqlBatch {
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36 my $this = shift;
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37
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38 push @{$this->sqlBatch}, @_;
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39 }
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40
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41 sub ApplyOperation {
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42 my ($this, $op, $iteration ) = @_;
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43
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44 my @formatterParams;
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45
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46 if ( is( $op, AlterTableDropConstraint ) ) {
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47 my $constraint = $this
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48 ->dbSchema
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49 ->GetTable($op->tableName)
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50 ->GetConstraint($op->constraintName);
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51
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52 push @formatterParams, ref $constraint;
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53 } else {
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54 push @formatterParams, $this->dbSchema;
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55 }
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56
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57 if ( is( $op, CreateTable ) ) {
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58 my @constraints;
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59 my @fk;
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60 my $table = $op->table;
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61
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62 # отделяем создание внешних ключей от таблиц
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63
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64 foreach my $c (@{$table->{constraints} || []}) {
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65 if ( is($c,ForeignKey)) {
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66 push @fk,$c;
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67 } else {
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68 push @constraints, $c;
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69 }
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70 }
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71
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72 if (@fk) {
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73 $op = CreateTable->new(
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74 Table->new(
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75 $table->{name},
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76 $table->{columns},
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77 \@constraints,
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78 $table->{options}
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79 )
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80 );
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81
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82 $this->AddPendingOperations(
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83 map AlterTableAddConstraint->new($table->{name},$_), @fk
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84 );
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85 }
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86 }
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87
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88 if (is($op, DropTable)) {
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89 my $table = $this->dbSchema->GetTable($op->tableName);
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90
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91 if(my $pk = $table->primaryKey) {
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92 $this->ApplyOperation($_,$iteration)
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93 foreach
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94 map
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95 AlterTableDropConstraint->new($_->table->name,$_->name),
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96 values %{$pk->connectedFK || {}};
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97 }
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98 }
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99
271
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100 $this->next::method($op,$iteration);
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101
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102 $this->AddSqlBatch(
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103 $this->formatter->Format($op,@formatterParams)
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104 );
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105 }
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106
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107 package IMPL::SQL::Schema::MySQL::Processor::PrimitiveDropTable;
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108 use IMPL::Const qw(:prop);
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109 use IMPL::declare {
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110 require => {
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111 ArgException => '-IMPL::InvalidArgumentException'
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112 },
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113 base => [
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114 'IMPL::Object' => undef
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115 ],
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116 props => [
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117 tableName => PROP_RO,
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118 ]
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119 };
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120
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121 sub CTOR {
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122 my ($this,$tableName) = @_;
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123
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124 $this->tableName($tableName) or die ArgException->new("tableName is required");
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125 }
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126
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127 sub CanApply {
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128 my ($this,$schema) = @_;
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129
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130 my $table = $schema->GetTable( $this->tableName )
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131 or return 0;
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132
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133 my $pk = $table->primaryKey
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134 or return 1;
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135
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136 my $canDrop = keys(%{$pk->connectedFK || {}}) ? 0 : 1;
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137
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138 warn "Can drop ", $this->tableName
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139 if $canDrop;
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140
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141 return $canDrop;
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142 }
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143
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144 sub Apply {
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145 my ($this,$schema) = @_;
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146
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147 $schema->RemoveTable($this->tableName);
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148 }
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149
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150 1;