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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 $data, in the case of this parser, is not useful. |
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26 | # We're working with DBIx::Class Schemas, not data streams. |
27 | # ------------------------------------------------------------------- |
28 | sub parse { |
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29 | my ($tr, $data) = @_; |
30 | my $args = $tr->parser_args; |
31 | my $dbixschema = $args->{'DBIx::Schema'} || $data; |
32 | $dbixschema ||= $args->{'package'}; |
33 | my $limit_sources = $args->{'sources'}; |
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34 | |
35 | die 'No DBIx::Schema' unless ($dbixschema); |
36 | if (!ref $dbixschema) { |
37 | eval "use $dbixschema;"; |
38 | die "Can't load $dbixschema ($@)" if($@); |
39 | } |
40 | |
41 | my $schema = $tr->schema; |
42 | my $table_no = 0; |
43 | |
44 | # print Dumper($dbixschema->registered_classes); |
45 | |
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46 | #foreach my $tableclass ($dbixschema->registered_classes) |
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47 | |
48 | my %seen_tables; |
49 | |
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50 | my @monikers = $dbixschema->sources; |
51 | if ($limit_sources) { |
52 | my $ref = ref $limit_sources || ''; |
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53 | die "'sources' parameter must be an array or hash ref" unless $ref eq 'ARRAY' || ref eq 'HASH'; |
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54 | |
55 | # limit monikers to those specified in |
56 | my $sources; |
57 | if ($ref eq 'ARRAY') { |
58 | $sources->{$_} = 1 for (@$limit_sources); |
59 | } else { |
60 | $sources = $limit_sources; |
61 | } |
62 | @monikers = grep { $sources->{$_} } @monikers; |
63 | } |
64 | |
65 | |
66 | foreach my $moniker (@monikers) |
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67 | { |
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68 | #eval "use $tableclass"; |
69 | #print("Can't load $tableclass"), next if($@); |
70 | my $source = $dbixschema->source($moniker); |
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71 | |
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72 | next if $seen_tables{$source->name}++; |
73 | |
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74 | my $table = $schema->add_table( |
75 | name => $source->name, |
76 | type => 'TABLE', |
77 | ) || die $schema->error; |
78 | my $colcount = 0; |
79 | foreach my $col ($source->columns) |
80 | { |
81 | # assuming column_info in dbix is the same as DBI (?) |
82 | # data_type is a number, column_type is text? |
83 | my %colinfo = ( |
84 | name => $col, |
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85 | size => 0, |
86 | is_auto_increment => 0, |
87 | is_foreign_key => 0, |
88 | is_nullable => 0, |
89 | %{$source->column_info($col)} |
90 | ); |
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91 | if ($colinfo{is_nullable}) { |
92 | $colinfo{default} = '' unless exists $colinfo{default}; |
93 | } |
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94 | my $f = $table->add_field(%colinfo) || die $table->error; |
95 | } |
96 | $table->primary_key($source->primary_columns); |
97 | |
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98 | my @primary = $source->primary_columns; |
99 | my %unique_constraints = $source->unique_constraints; |
100 | foreach my $uniq (keys %unique_constraints) { |
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101 | if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) { |
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102 | $table->add_constraint( |
103 | type => 'unique', |
104 | name => "$uniq", |
105 | fields => $unique_constraints{$uniq} |
106 | ); |
107 | } |
108 | } |
109 | |
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110 | my @rels = $source->relationships(); |
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111 | |
112 | my %created_FK_rels; |
113 | |
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114 | foreach my $rel (@rels) |
115 | { |
116 | my $rel_info = $source->relationship_info($rel); |
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117 | |
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118 | # Ignore any rel cond that isn't a straight hash |
119 | next unless ref $rel_info->{cond} eq 'HASH'; |
120 | |
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121 | my $othertable = $source->related_source($rel); |
122 | my $rel_table = $othertable->name; |
123 | |
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124 | # Get the key information, mapping off the foreign/self markers |
125 | my @cond = keys(%{$rel_info->{cond}}); |
126 | my @refkeys = map {/^\w+\.(\w+)$/} @cond; |
127 | my @keys = map {$rel_info->{cond}->{$_} =~ /^\w+\.(\w+)$/} @cond; |
128 | |
129 | if($rel_table) |
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130 | { |
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131 | |
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132 | my $reverse_rels = $source->reverse_relationship_info($rel); |
133 | my ($otherrelname, $otherrelationship) = each %{$reverse_rels}; |
134 | |
135 | my $on_delete = ''; |
136 | my $on_update = ''; |
137 | |
138 | if (defined $otherrelationship) { |
139 | $on_delete = $otherrelationship->{'attrs'}->{cascade_delete} ? 'CASCADE' : ''; |
140 | $on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : ''; |
141 | } |
142 | |
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143 | # Make sure we dont create the same foreign key constraint twice |
144 | my $key_test = join("\x00", @keys); |
145 | |
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146 | #Decide if this is a foreign key based on whether the self |
147 | #items are our primary columns. |
148 | |
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149 | # If the sets are different, then we assume it's a foreign key from |
150 | # us to another table. |
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151 | # OR: If is_foreign_key attr is explicity set on one the local columns |
152 | if ( ! exists $created_FK_rels{$rel_table}->{$key_test} |
153 | && |
154 | ( !$source->compare_relationship_keys(\@keys, \@primary) || |
155 | grep { $source->column_info($_)->{is_foreign_key} } @keys |
156 | ) |
157 | ) { |
158 | $created_FK_rels{$rel_table}->{$key_test} = 1; |
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159 | $table->add_constraint( |
160 | type => 'foreign_key', |
161 | name => "fk_$keys[0]", |
162 | fields => \@keys, |
163 | reference_fields => \@refkeys, |
164 | reference_table => $rel_table, |
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165 | on_delete => $on_delete, |
166 | on_update => $on_update |
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167 | ); |
168 | } |
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169 | } |
170 | } |
171 | } |
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172 | return 1; |
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173 | } |
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174 | |
175 | 1; |
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176 | |