Commit | Line | Data |
18fca96a |
1 | package DBIx::Class::Schema::Loader::DB2; |
a78e3fed |
2 | |
3 | use strict; |
18fca96a |
4 | use base 'DBIx::Class::Schema::Loader::Generic'; |
a78e3fed |
5 | use Carp; |
6 | |
7 | =head1 NAME |
8 | |
18fca96a |
9 | DBIx::Class::Schema::Loader::DB2 - DBIx::Class::Schema::Loader DB2 Implementation. |
a78e3fed |
10 | |
11 | =head1 SYNOPSIS |
12 | |
18fca96a |
13 | use DBIx::Schema::Class::Loader; |
a78e3fed |
14 | |
18fca96a |
15 | # $loader is a DBIx::Class::Schema::Loader::DB2 |
16 | my $loader = DBIx::Class::Schema::Loader->new( |
a78e3fed |
17 | dsn => "dbi:DB2:dbname", |
18 | user => "myuser", |
19 | password => "", |
20 | namespace => "Data", |
21 | schema => "MYSCHEMA", |
22 | dropschema => 0, |
23 | ); |
a78e3fed |
24 | |
25 | =head1 DESCRIPTION |
26 | |
18fca96a |
27 | See L<DBIx::Class::Schema::Loader>. |
a78e3fed |
28 | |
29 | =cut |
30 | |
31 | sub _db_classes { |
af96f52e |
32 | return qw/DBIx::Class::PK::Auto::DB2/; |
a78e3fed |
33 | } |
34 | |
35 | sub _tables { |
a4a19f3c |
36 | my $class = shift; |
a78e3fed |
37 | my %args = @_; |
af96f52e |
38 | my $db_schema = uc $class->loader_data->{_db_schema}; |
a4a19f3c |
39 | my $dbh = $class->storage->dbh; |
a78e3fed |
40 | |
41 | # this is split out to avoid version parsing errors... |
42 | my $is_dbd_db2_gte_114 = ( $DBD::DB2::VERSION >= 1.14 ); |
43 | my @tables = $is_dbd_db2_gte_114 ? |
44 | $dbh->tables( { TABLE_SCHEM => '%', TABLE_TYPE => 'TABLE,VIEW' } ) |
45 | : $dbh->tables; |
a78e3fed |
46 | # People who use table or schema names that aren't identifiers deserve |
47 | # what they get. Still, FIXME? |
48 | s/\"//g for @tables; |
49 | @tables = grep {!/^SYSIBM\./ and !/^SYSCAT\./ and !/^SYSSTAT\./} @tables; |
af6c2665 |
50 | @tables = grep {/^$db_schema\./} @tables if($db_schema); |
a78e3fed |
51 | return @tables; |
52 | } |
53 | |
54 | sub _table_info { |
a4a19f3c |
55 | my ( $class, $table ) = @_; |
a78e3fed |
56 | # $|=1; |
57 | # print "_table_info($table)\n"; |
af6c2665 |
58 | my ($db_schema, $tabname) = split /\./, $table, 2; |
59 | # print "DB_Schema: $db_schema, Table: $tabname\n"; |
a78e3fed |
60 | |
61 | # FIXME: Horribly inefficient and just plain evil. (JMM) |
a4a19f3c |
62 | my $dbh = $class->storage->dbh; |
a78e3fed |
63 | $dbh->{RaiseError} = 1; |
64 | |
65 | my $sth = $dbh->prepare(<<'SQL') or die; |
66 | SELECT c.COLNAME |
67 | FROM SYSCAT.COLUMNS as c |
68 | WHERE c.TABSCHEMA = ? and c.TABNAME = ? |
69 | SQL |
70 | |
af6c2665 |
71 | $sth->execute($db_schema, $tabname) or die; |
af96f52e |
72 | my @cols = map { lc } map { @$_ } @{$sth->fetchall_arrayref}; |
73 | |
74 | $sth->finish; |
a78e3fed |
75 | |
76 | $sth = $dbh->prepare(<<'SQL') or die; |
77 | SELECT kcu.COLNAME |
78 | FROM SYSCAT.TABCONST as tc |
79 | JOIN SYSCAT.KEYCOLUSE as kcu ON tc.constname = kcu.constname |
80 | WHERE tc.TABSCHEMA = ? and tc.TABNAME = ? and tc.TYPE = 'P' |
81 | SQL |
82 | |
af6c2665 |
83 | $sth->execute($db_schema, $tabname) or die; |
a78e3fed |
84 | |
af96f52e |
85 | my @pri = map { lc } map { @$_ } @{$sth->fetchall_arrayref}; |
86 | |
87 | $sth->finish; |
a78e3fed |
88 | |
89 | return ( \@cols, \@pri ); |
90 | } |
91 | |
af96f52e |
92 | # Find and setup relationships |
93 | sub _relationships { |
94 | my $class = shift; |
95 | |
96 | my $dbh = $class->storage->dbh; |
97 | |
98 | my $sth = $dbh->prepare(<<'SQL') or die; |
99 | SELECT SR.COLCOUNT, SR.REFTBNAME, SR.PKCOLNAMES, SR.FKCOLNAMES |
100 | FROM SYSIBM.SYSRELS SR WHERE SR.TBNAME = ? |
101 | SQL |
102 | |
103 | foreach my $table ( $class->tables ) { |
104 | if ($sth->execute(uc $table)) { |
105 | while(my $res = $sth->fetchrow_arrayref()) { |
106 | my ($colcount, $other, $other_column, $column) = |
107 | map { $_=lc; s/^\s+//; s/\s+$//; $_; } @$res; |
108 | next if $colcount != 1; # XXX no multi-col FK support yet |
109 | eval { $class->_belongs_to_many( $table, $column, $other, |
110 | $other_column ) }; |
111 | warn qq/\# belongs_to_many failed "$@"\n\n/ |
112 | if $@ && $class->debug_loader; |
113 | } |
114 | } |
115 | } |
116 | |
117 | $sth->finish; |
118 | $dbh->disconnect; |
119 | } |
120 | |
a78e3fed |
121 | =head1 SEE ALSO |
122 | |
18fca96a |
123 | L<DBIx::Class::Schema::Loader> |
a78e3fed |
124 | |
125 | =cut |
126 | |
127 | 1; |