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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 | my %seen_tables; |
46 | |
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47 | my @sources = exists $args->{'source_names'} ? @{ $args->{'source_names'} } : $dbixschema->sources; |
48 | foreach my $moniker (@sources) |
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49 | { |
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50 | #eval "use $tableclass"; |
51 | #print("Can't load $tableclass"), next if($@); |
52 | my $source = $dbixschema->source($moniker); |
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53 | |
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54 | next if $seen_tables{$source->name}++; |
55 | |
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56 | my $table = $schema->add_table( |
57 | name => $source->name, |
58 | type => 'TABLE', |
59 | ) || die $schema->error; |
60 | my $colcount = 0; |
61 | foreach my $col ($source->columns) |
62 | { |
63 | # assuming column_info in dbix is the same as DBI (?) |
64 | # data_type is a number, column_type is text? |
65 | my %colinfo = ( |
66 | name => $col, |
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67 | size => 0, |
68 | is_auto_increment => 0, |
69 | is_foreign_key => 0, |
70 | is_nullable => 0, |
71 | %{$source->column_info($col)} |
72 | ); |
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73 | if ($colinfo{is_nullable}) { |
74 | $colinfo{default} = '' unless exists $colinfo{default}; |
75 | } |
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76 | my $f = $table->add_field(%colinfo) || die $table->error; |
77 | } |
78 | $table->primary_key($source->primary_columns); |
79 | |
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80 | my @primary = $source->primary_columns; |
81 | my %unique_constraints = $source->unique_constraints; |
82 | foreach my $uniq (keys %unique_constraints) { |
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83 | if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) { |
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84 | $table->add_constraint( |
85 | type => 'unique', |
86 | name => "$uniq", |
87 | fields => $unique_constraints{$uniq} |
88 | ); |
89 | } |
90 | } |
91 | |
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92 | my @rels = $source->relationships(); |
93 | foreach my $rel (@rels) |
94 | { |
95 | my $rel_info = $source->relationship_info($rel); |
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96 | |
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97 | # Ignore any rel cond that isn't a straight hash |
98 | next unless ref $rel_info->{cond} eq 'HASH'; |
99 | |
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100 | my $othertable = $source->related_source($rel); |
101 | my $rel_table = $othertable->name; |
102 | |
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103 | # Get the key information, mapping off the foreign/self markers |
104 | my @cond = keys(%{$rel_info->{cond}}); |
105 | my @refkeys = map {/^\w+\.(\w+)$/} @cond; |
106 | my @keys = map {$rel_info->{cond}->{$_} =~ /^\w+\.(\w+)$/} @cond; |
107 | |
108 | if($rel_table) |
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109 | { |
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110 | |
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111 | my $reverse_rels = $source->reverse_relationship_info($rel); |
112 | my ($otherrelname, $otherrelationship) = each %{$reverse_rels}; |
113 | |
114 | my $on_delete = ''; |
115 | my $on_update = ''; |
116 | |
117 | if (defined $otherrelationship) { |
118 | $on_delete = $otherrelationship->{'attrs'}->{cascade_delete} ? 'CASCADE' : ''; |
119 | $on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : ''; |
120 | } |
121 | |
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122 | #Decide if this is a foreign key based on whether the self |
123 | #items are our primary columns. |
124 | |
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125 | # If the sets are different, then we assume it's a foreign key from |
126 | # us to another table. |
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127 | if (!$source->compare_relationship_keys(\@keys, \@primary)) { |
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128 | $table->add_constraint( |
129 | type => 'foreign_key', |
130 | name => "fk_$keys[0]", |
131 | fields => \@keys, |
132 | reference_fields => \@refkeys, |
133 | reference_table => $rel_table, |
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134 | on_delete => $on_delete, |
135 | on_update => $on_update |
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136 | ); |
137 | } |
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138 | } |
139 | } |
140 | } |
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141 | return 1; |
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142 | } |
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143 | |
144 | 1; |
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145 | |