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