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1 | package # hide from PAUSE |
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2 | SQL::Translator::Parser::DBIx::Class; |
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3 | |
4 | # AUTHOR: Jess Robinson |
5 | |
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6 | # Some mistakes the fault of Matt S Trout |
7 | |
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8 | use strict; |
9 | use warnings; |
10 | use vars qw($DEBUG $VERSION @EXPORT_OK); |
11 | $DEBUG = 0 unless defined $DEBUG; |
12 | $VERSION = sprintf "%d.%02d", q$Revision 1.0$ =~ /(\d+)\.(\d+)/; |
13 | |
14 | use Exporter; |
15 | use Data::Dumper; |
16 | use SQL::Translator::Utils qw(debug normalize_name); |
17 | |
18 | use base qw(Exporter); |
19 | |
20 | @EXPORT_OK = qw(parse); |
21 | |
22 | # ------------------------------------------------------------------- |
23 | # parse($tr, $data) |
24 | # |
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25 | # Note that $data, in the case of this parser, is not useful. |
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26 | # We're working with DBIx::Class Schemas, not data streams. |
27 | # ------------------------------------------------------------------- |
28 | sub parse { |
29 | my ($tr, $data) = @_; |
30 | my $args = $tr->parser_args; |
31 | my $dbixschema = $args->{'DBIx::Schema'} || $data; |
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32 | $dbixschema ||= $args->{'package'}; |
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33 | |
34 | die 'No DBIx::Schema' unless ($dbixschema); |
35 | if (!ref $dbixschema) { |
36 | eval "use $dbixschema;"; |
37 | die "Can't load $dbixschema ($@)" if($@); |
38 | } |
39 | |
40 | my $schema = $tr->schema; |
41 | my $table_no = 0; |
42 | |
43 | # print Dumper($dbixschema->registered_classes); |
44 | |
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45 | #foreach my $tableclass ($dbixschema->registered_classes) |
46 | |
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47 | my %seen_tables; |
48 | |
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49 | foreach my $moniker ($dbixschema->sources) |
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50 | { |
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51 | #eval "use $tableclass"; |
52 | #print("Can't load $tableclass"), next if($@); |
53 | my $source = $dbixschema->source($moniker); |
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54 | |
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55 | next if $seen_tables{$source->name}++; |
56 | |
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57 | my $table = $schema->add_table( |
58 | name => $source->name, |
59 | type => 'TABLE', |
60 | ) || die $schema->error; |
61 | my $colcount = 0; |
62 | foreach my $col ($source->columns) |
63 | { |
64 | # assuming column_info in dbix is the same as DBI (?) |
65 | # data_type is a number, column_type is text? |
66 | my %colinfo = ( |
67 | name => $col, |
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68 | size => 0, |
69 | is_auto_increment => 0, |
70 | is_foreign_key => 0, |
71 | is_nullable => 0, |
72 | %{$source->column_info($col)} |
73 | ); |
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74 | if ($colinfo{is_nullable}) { |
75 | $colinfo{default} = '' unless exists $colinfo{default}; |
76 | } |
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77 | my $f = $table->add_field(%colinfo) || die $table->error; |
78 | } |
79 | $table->primary_key($source->primary_columns); |
80 | |
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81 | my @primary = $source->primary_columns; |
82 | my %unique_constraints = $source->unique_constraints; |
83 | foreach my $uniq (keys %unique_constraints) { |
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84 | if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) { |
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85 | $table->add_constraint( |
86 | type => 'unique', |
87 | name => "$uniq", |
88 | fields => $unique_constraints{$uniq} |
89 | ); |
90 | } |
91 | } |
92 | |
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93 | my @rels = $source->relationships(); |
94 | foreach my $rel (@rels) |
95 | { |
96 | my $rel_info = $source->relationship_info($rel); |
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97 | |
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98 | # Ignore any rel cond that isn't a straight hash |
99 | next unless ref $rel_info->{cond} eq 'HASH'; |
100 | |
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101 | my $othertable = $source->related_source($rel); |
102 | my $rel_table = $othertable->name; |
103 | |
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104 | # Get the key information, mapping off the foreign/self markers |
105 | my @cond = keys(%{$rel_info->{cond}}); |
106 | my @refkeys = map {/^\w+\.(\w+)$/} @cond; |
107 | my @keys = map {$rel_info->{cond}->{$_} =~ /^\w+\.(\w+)$/} @cond; |
108 | |
109 | if($rel_table) |
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110 | { |
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111 | |
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112 | my $reverse_rels = $source->reverse_relationship_info($rel); |
113 | my ($otherrelname, $otherrelationship) = each %{$reverse_rels}; |
114 | |
115 | my $on_delete = ''; |
116 | my $on_update = ''; |
117 | |
118 | if (defined $otherrelationship) { |
119 | $on_delete = $otherrelationship->{'attrs'}->{cascade_delete} ? 'CASCADE' : ''; |
120 | $on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : ''; |
121 | } |
122 | |
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123 | #Decide if this is a foreign key based on whether the self |
124 | #items are our primary columns. |
125 | |
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126 | # If the sets are different, then we assume it's a foreign key from |
127 | # us to another table. |
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128 | if (!$source->compare_relationship_keys(\@keys, \@primary)) { |
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129 | $table->add_constraint( |
130 | type => 'foreign_key', |
131 | name => "fk_$keys[0]", |
132 | fields => \@keys, |
133 | reference_fields => \@refkeys, |
134 | reference_table => $rel_table, |
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135 | on_delete => $on_delete, |
136 | on_update => $on_update |
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137 | ); |
138 | } |
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139 | } |
140 | } |
141 | } |
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142 | return 1; |
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143 | } |
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144 | |
145 | 1; |
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146 | |