lib/DBIx/Class/Schema/Loader/DBI/MSSQL.pm

   1 package DBIx::Class::Schema::Loader::DBI::MSSQL;
   2
   3 use strict;
   4 use warnings;
   5 use base 'DBIx::Class::Schema::Loader::DBI';
   6 use Carp::Clan qw/^DBIx::Class/;
   7 use Class::C3;
   8
   9 our $VERSION = '0.04999_06';
  10
  11 =head1 NAME
  12
  13 DBIx::Class::Schema::Loader::DBI::MSSQL - DBIx::Class::Schema::Loader::DBI MSSQL Implementation.
  14
  15 =head1 SYNOPSIS
  16
  17   package My::Schema;
  18   use base qw/DBIx::Class::Schema::Loader/;
  19
  20   __PACKAGE__->loader_options( debug => 1 );
  21
  22   1;
  23
  24 =head1 DESCRIPTION
  25
  26 See L<DBIx::Class::Schema::Loader::Base>.
  27
  28 =cut
  29
  30 sub _setup {
  31     my $self = shift;
  32
  33     $self->next::method(@_);
  34     $self->{db_schema} ||= 'dbo';
  35 }
  36
  37 # DBD::Sybase doesn't implement get_info properly
  38 #sub _build_quoter  { [qw/[ ]/] }
  39 sub _build_quoter  { '"' }
  40 sub _build_namesep { '.' }
  41
  42 sub _table_pk_info {
  43     my ($self, $table) = @_;
  44     my $dbh = $self->schema->storage->dbh;
  45     my $sth = $dbh->prepare(qq{sp_pkeys '$table'});
  46     $sth->execute;
  47
  48     my @keydata;
  49
  50     while (my $row = $sth->fetchrow_hashref) {
  51         push @keydata, lc $row->{COLUMN_NAME};
  52     }
  53
  54     return \@keydata;
  55 }
  56
  57 sub _table_fk_info {
  58     my ($self, $table) = @_;
  59
  60     my ($local_cols, $remote_cols, $remote_table, @rels);
  61     my $dbh = $self->schema->storage->dbh;
  62     my $sth = $dbh->prepare(qq{sp_fkeys \@FKTABLE_NAME = '$table'});
  63     $sth->execute;
  64
  65     while (my $row = $sth->fetchrow_hashref) {
  66         my $fk = $row->{FK_NAME};
  67         push @{$local_cols->{$fk}}, lc $row->{FKCOLUMN_NAME};
  68         push @{$remote_cols->{$fk}}, lc $row->{PKCOLUMN_NAME};
  69         $remote_table->{$fk} = $row->{PKTABLE_NAME};
  70     }
  71
  72     foreach my $fk (keys %$remote_table) {
  73         push @rels, {
  74                       local_columns => \@{$local_cols->{$fk}},
  75                       remote_columns => \@{$remote_cols->{$fk}},
  76                       remote_table => $remote_table->{$fk},
  77                     };
  78
  79     }
  80     return \@rels;
  81 }
  82
  83 sub _table_uniq_info {
  84     my ($self, $table) = @_;
  85
  86     my $dbh = $self->schema->storage->dbh;
  87     my $sth = $dbh->prepare(qq{SELECT CCU.CONSTRAINT_NAME, CCU.COLUMN_NAME FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE CCU
  88                                JOIN INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC ON (CCU.CONSTRAINT_NAME = TC.CONSTRAINT_NAME)
  89                                JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU ON (CCU.CONSTRAINT_NAME = KCU.CONSTRAINT_NAME AND CCU.COLUMN_NAME = KCU.COLUMN_NAME)
  90                                WHERE CCU.TABLE_NAME = '$table' AND CONSTRAINT_TYPE = 'UNIQUE' ORDER BY KCU.ORDINAL_POSITION});
  91     $sth->execute;
  92     my $constraints;
  93     while (my $row = $sth->fetchrow_hashref) {
  94         my $name = lc $row->{CONSTRAINT_NAME};
  95         my $col  = lc $row->{COLUMN_NAME};
  96         push @{$constraints->{$name}}, $col;
  97     }
  98
  99     my @uniqs = map { [ $_ => $constraints->{$_} ] } keys %$constraints;
 100     return \@uniqs;
 101 }
 102
 103 sub _extra_column_info {
 104     my ($self, $info) = @_;
 105     my %extra_info;
 106
 107     my ($table, $column) = @$info{qw/TABLE_NAME COLUMN_NAME/};
 108
 109     my $dbh = $self->schema->storage->dbh;
 110     my $sth = $dbh->prepare(qq{SELECT COLUMN_NAME
 111                                FROM INFORMATION_SCHEMA.COLUMNS
 112                                WHERE COLUMNPROPERTY(object_id('$table', 'U'), '$column', 'IsIdentity') = 1 AND TABLE_NAME = '$table' AND COLUMN_NAME = '$column'
 113                               });
 114     $sth->execute();
 115
 116     if ($sth->fetchrow_array) {
 117         $extra_info{is_auto_increment} = 1;
 118     }
 119
 120     return \%extra_info;
 121 }
 122
 123
 124 =head1 SEE ALSO
 125
 126 L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
 127 L<DBIx::Class::Schema::Loader::DBI>
 128
 129 =head1 AUTHOR
 130
 131 Justin Hunter C<justin.d.hunter@gmail.com>
 132
 133 =cut
 134
 135 1;