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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 | # Others the fault of Ash Berlin |
9 | |
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10 | use strict; |
11 | use warnings; |
12 | use vars qw($DEBUG $VERSION @EXPORT_OK); |
13 | $DEBUG = 0 unless defined $DEBUG; |
14 | $VERSION = sprintf "%d.%02d", q$Revision 1.0$ =~ /(\d+)\.(\d+)/; |
15 | |
16 | use Exporter; |
17 | use Data::Dumper; |
18 | use SQL::Translator::Utils qw(debug normalize_name); |
19 | |
20 | use base qw(Exporter); |
21 | |
22 | @EXPORT_OK = qw(parse); |
23 | |
24 | # ------------------------------------------------------------------- |
25 | # parse($tr, $data) |
26 | # |
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27 | # Note that $data, in the case of this parser, is not useful. |
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28 | # We're working with DBIx::Class Schemas, not data streams. |
29 | # ------------------------------------------------------------------- |
30 | sub parse { |
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31 | my ($tr, $data) = @_; |
32 | my $args = $tr->parser_args; |
33 | my $dbixschema = $args->{'DBIx::Schema'} || $data; |
34 | $dbixschema ||= $args->{'package'}; |
35 | my $limit_sources = $args->{'sources'}; |
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36 | |
37 | die 'No DBIx::Schema' unless ($dbixschema); |
38 | if (!ref $dbixschema) { |
39 | eval "use $dbixschema;"; |
40 | die "Can't load $dbixschema ($@)" if($@); |
41 | } |
42 | |
43 | my $schema = $tr->schema; |
44 | my $table_no = 0; |
45 | |
46 | # print Dumper($dbixschema->registered_classes); |
47 | |
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48 | #foreach my $tableclass ($dbixschema->registered_classes) |
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49 | |
50 | my %seen_tables; |
51 | |
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52 | my @monikers = $dbixschema->sources; |
53 | if ($limit_sources) { |
54 | my $ref = ref $limit_sources || ''; |
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55 | die "'sources' parameter must be an array or hash ref" unless $ref eq 'ARRAY' || ref eq 'HASH'; |
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56 | |
57 | # limit monikers to those specified in |
58 | my $sources; |
59 | if ($ref eq 'ARRAY') { |
60 | $sources->{$_} = 1 for (@$limit_sources); |
61 | } else { |
62 | $sources = $limit_sources; |
63 | } |
64 | @monikers = grep { $sources->{$_} } @monikers; |
65 | } |
66 | |
67 | |
68 | foreach my $moniker (@monikers) |
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69 | { |
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70 | #eval "use $tableclass"; |
71 | #print("Can't load $tableclass"), next if($@); |
72 | my $source = $dbixschema->source($moniker); |
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73 | |
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74 | next if $seen_tables{$source->name}++; |
75 | |
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76 | my $table = $schema->add_table( |
77 | name => $source->name, |
78 | type => 'TABLE', |
79 | ) || die $schema->error; |
80 | my $colcount = 0; |
81 | foreach my $col ($source->columns) |
82 | { |
83 | # assuming column_info in dbix is the same as DBI (?) |
84 | # data_type is a number, column_type is text? |
85 | my %colinfo = ( |
86 | name => $col, |
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87 | size => 0, |
88 | is_auto_increment => 0, |
89 | is_foreign_key => 0, |
90 | is_nullable => 0, |
91 | %{$source->column_info($col)} |
92 | ); |
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93 | if ($colinfo{is_nullable}) { |
94 | $colinfo{default} = '' unless exists $colinfo{default}; |
95 | } |
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96 | my $f = $table->add_field(%colinfo) || die $table->error; |
97 | } |
98 | $table->primary_key($source->primary_columns); |
99 | |
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100 | my @primary = $source->primary_columns; |
101 | my %unique_constraints = $source->unique_constraints; |
102 | foreach my $uniq (keys %unique_constraints) { |
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103 | if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) { |
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104 | $table->add_constraint( |
105 | type => 'unique', |
106 | name => "$uniq", |
107 | fields => $unique_constraints{$uniq} |
108 | ); |
109 | } |
110 | } |
111 | |
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112 | my @rels = $source->relationships(); |
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113 | |
114 | my %created_FK_rels; |
115 | |
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116 | foreach my $rel (@rels) |
117 | { |
118 | my $rel_info = $source->relationship_info($rel); |
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119 | |
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120 | # Ignore any rel cond that isn't a straight hash |
121 | next unless ref $rel_info->{cond} eq 'HASH'; |
122 | |
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123 | my $othertable = $source->related_source($rel); |
124 | my $rel_table = $othertable->name; |
125 | |
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126 | # Get the key information, mapping off the foreign/self markers |
127 | my @cond = keys(%{$rel_info->{cond}}); |
128 | my @refkeys = map {/^\w+\.(\w+)$/} @cond; |
129 | my @keys = map {$rel_info->{cond}->{$_} =~ /^\w+\.(\w+)$/} @cond; |
130 | |
131 | if($rel_table) |
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132 | { |
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133 | my $reverse_rels = $source->reverse_relationship_info($rel); |
134 | my ($otherrelname, $otherrelationship) = each %{$reverse_rels}; |
135 | |
136 | my $on_delete = ''; |
137 | my $on_update = ''; |
138 | |
139 | if (defined $otherrelationship) { |
140 | $on_delete = $otherrelationship->{'attrs'}->{cascade_delete} ? 'CASCADE' : ''; |
141 | $on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : ''; |
142 | } |
143 | |
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144 | # Make sure we dont create the same foreign key constraint twice |
145 | my $key_test = join("\x00", @keys); |
146 | |
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147 | #Decide if this is a foreign key based on whether the self |
148 | #items are our primary columns. |
149 | |
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150 | # If the sets are different, then we assume it's a foreign key from |
151 | # us to another table. |
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152 | # OR: If is_foreign_key_constraint attr is explicity set (or set to false) on the relation |
153 | if ( ! exists $created_FK_rels{$rel_table}->{$key_test} && |
154 | ( exists $rel_info->{attrs}{is_foreign_key_constraint} && |
155 | $rel_info->{attrs}{is_foreign_key_constraint} || |
156 | !$source->compare_relationship_keys(\@keys, \@primary) |
157 | ) |
158 | ) |
159 | { |
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160 | $created_FK_rels{$rel_table}->{$key_test} = 1; |
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161 | $table->add_constraint( |
162 | type => 'foreign_key', |
163 | name => "fk_$keys[0]", |
164 | fields => \@keys, |
165 | reference_fields => \@refkeys, |
166 | reference_table => $rel_table, |
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167 | on_delete => $on_delete, |
168 | on_update => $on_update |
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169 | ); |
170 | } |
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171 | } |
172 | } |
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173 | |
174 | if ($source->result_class->can('sqlt_deploy_hook')) { |
175 | $source->result_class->sqlt_deploy_hook($table); |
176 | } |
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177 | } |
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178 | return 1; |
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179 | } |
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180 | |
181 | 1; |
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182 | |