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1 | package DBIx::Class::Schema::Loader::DBI::Sybase; |
2 | |
3 | use strict; |
4 | use warnings; |
c9373b79 |
5 | use base qw/ |
6 | DBIx::Class::Schema::Loader::DBI |
7 | DBIx::Class::Schema::Loader::DBI::Sybase::Common |
8 | /; |
fe67d343 |
9 | use Carp::Clan qw/^DBIx::Class/; |
10 | use Class::C3; |
11 | |
12 | our $VERSION = '0.04999_06'; |
13 | |
14 | =head1 NAME |
15 | |
16 | DBIx::Class::Schema::Loader::DBI::Sybase - DBIx::Class::Schema::Loader::DBI Sybase Implementation. |
17 | |
18 | =head1 SYNOPSIS |
19 | |
20 | package My::Schema; |
21 | use base qw/DBIx::Class::Schema::Loader/; |
22 | |
23 | __PACKAGE__->loader_options( debug => 1 ); |
24 | |
25 | 1; |
26 | |
27 | =head1 DESCRIPTION |
28 | |
29 | See L<DBIx::Class::Schema::Loader::Base>. |
30 | |
31 | =cut |
32 | |
565335e6 |
33 | sub _is_case_sensitive { 1 } |
34 | |
fe67d343 |
35 | sub _setup { |
36 | my $self = shift; |
37 | |
38 | $self->next::method(@_); |
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39 | $self->{db_schema} ||= $self->_build_db_schema; |
40 | $self->_set_quote_char_and_name_sep; |
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41 | } |
42 | |
43 | sub _rebless { |
44 | my $self = shift; |
45 | |
46 | my $dbh = $self->schema->storage->dbh; |
47 | my $DBMS_VERSION = @{$dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]; |
48 | if ($DBMS_VERSION =~ /^Microsoft /i) { |
65f74457 |
49 | my $subclass = 'DBIx::Class::Schema::Loader::DBI::MSSQL'; |
50 | if ($self->load_optional_class($subclass) && !$self->isa($subclass)) { |
51 | bless $self, $subclass; |
52 | $self->_rebless; |
fe67d343 |
53 | } |
54 | } |
55 | } |
56 | |
57 | sub _table_columns { |
58 | my ($self, $table) = @_; |
59 | |
60 | my $dbh = $self->schema->storage->dbh; |
61 | my $columns = $dbh->selectcol_arrayref(qq{SELECT name FROM syscolumns WHERE id = (SELECT id FROM sysobjects WHERE name = '$table' AND type = 'U')}); |
62 | |
63 | return $columns; |
64 | } |
65 | |
66 | sub _table_pk_info { |
67 | my ($self, $table) = @_; |
68 | |
69 | my $dbh = $self->schema->storage->dbh; |
70 | my $sth = $dbh->prepare(qq{sp_pkeys '$table'}); |
71 | $sth->execute; |
72 | |
73 | my @keydata; |
74 | |
75 | while (my $row = $sth->fetchrow_hashref) { |
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76 | push @keydata, $row->{column_name}; |
fe67d343 |
77 | } |
78 | |
79 | return \@keydata; |
80 | } |
81 | |
82 | sub _table_fk_info { |
83 | my ($self, $table) = @_; |
84 | |
0852b7b8 |
85 | # check if FK_NAME is supported |
565335e6 |
86 | |
0852b7b8 |
87 | my $dbh = $self->schema->storage->dbh; |
565335e6 |
88 | local $dbh->{FetchHashKeyName} = 'NAME_lc'; |
0852b7b8 |
89 | # hide "Object does not exist in this database." when trying to fetch fkeys |
90 | local $dbh->{syb_err_handler} = sub { return $_[0] == 17461 ? 0 : 1 }; |
91 | my $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = '$table'}); |
92 | $sth->execute; |
93 | my $row = $sth->fetchrow_hashref; |
94 | |
95 | return unless $row; |
96 | |
97 | if (exists $row->{fk_name}) { |
98 | $sth->finish; |
99 | return $self->_table_fk_info_by_name($table); |
100 | } |
101 | |
102 | $sth->finish; |
103 | return $self->_table_fk_info_builder($table); |
104 | } |
105 | |
106 | sub _table_fk_info_by_name { |
107 | my ($self, $table) = @_; |
108 | my ($local_cols, $remote_cols, $remote_table, @rels); |
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109 | |
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110 | my $dbh = $self->schema->storage->dbh; |
111 | local $dbh->{FetchHashKeyName} = 'NAME_lc'; |
fe67d343 |
112 | # hide "Object does not exist in this database." when trying to fetch fkeys |
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113 | local $dbh->{syb_err_handler} = sub { return $_[0] == 17461 ? 0 : 1 }; |
565335e6 |
114 | my $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = '$table'}); |
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115 | $sth->execute; |
116 | |
117 | while (my $row = $sth->fetchrow_hashref) { |
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118 | my $fk = $row->{fk_name}; |
119 | next unless defined $fk; |
565335e6 |
120 | |
121 | push @{$local_cols->{$fk}}, $row->{fkcolumn_name}; |
122 | push @{$remote_cols->{$fk}}, $row->{pkcolumn_name}; |
123 | $remote_table->{$fk} = $row->{pktable_name}; |
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124 | } |
125 | |
126 | foreach my $fk (keys %$remote_table) { |
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127 | push @rels, { |
128 | local_columns => \@{$local_cols->{$fk}}, |
129 | remote_columns => \@{$remote_cols->{$fk}}, |
130 | remote_table => $remote_table->{$fk}, |
131 | }; |
fe67d343 |
132 | |
133 | } |
134 | return \@rels; |
135 | } |
136 | |
0852b7b8 |
137 | sub _table_fk_info_builder { |
138 | my ($self, $table) = @_; |
139 | |
140 | my $dbh = $self->schema->storage->dbh; |
141 | local $dbh->{FetchHashKeyName} = 'NAME_lc'; |
142 | # hide "Object does not exist in this database." when trying to fetch fkeys |
143 | local $dbh->{syb_err_handler} = sub { return 0 if $_[0] == 17461; }; |
144 | my $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = '$table'}); |
145 | $sth->execute; |
146 | |
147 | my @fk_info; |
148 | while (my $row = $sth->fetchrow_hashref) { |
149 | (my $ksq = $row->{key_seq}) =~ s/\s+//g; |
150 | |
151 | my @keys = qw/pktable_name pkcolumn_name fktable_name fkcolumn_name/; |
152 | my %ds; |
153 | @ds{@keys} = @{$row}{@keys}; |
154 | $ds{key_seq} = $ksq; |
155 | |
156 | push @{ $fk_info[$ksq] }, \%ds; |
157 | } |
158 | |
159 | my $max_keys = $#fk_info; |
160 | my @rels; |
161 | for my $level (reverse 1 .. $max_keys) { |
162 | my @level_rels; |
163 | $level_rels[$level] = splice @fk_info, $level, 1; |
164 | my $count = @{ $level_rels[$level] }; |
165 | |
166 | for my $sub_level (reverse 1 .. $level-1) { |
167 | my $total = @{ $fk_info[$sub_level] }; |
168 | |
169 | $level_rels[$sub_level] = [ |
170 | splice @{ $fk_info[$sub_level] }, $total-$count, $count |
171 | ]; |
172 | } |
173 | |
174 | while (1) { |
175 | my @rel = map shift @$_, @level_rels[1..$level]; |
176 | |
177 | last unless defined $rel[0]; |
178 | |
179 | my @local_columns = map $_->{fkcolumn_name}, @rel; |
180 | my @remote_columns = map $_->{pkcolumn_name}, @rel; |
181 | my $remote_table = $rel[0]->{pktable_name}; |
182 | |
183 | push @rels, { |
184 | local_columns => \@local_columns, |
185 | remote_columns => \@remote_columns, |
186 | remote_table => $remote_table |
187 | }; |
188 | } |
189 | } |
190 | |
191 | return \@rels; |
192 | } |
193 | |
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194 | sub _table_uniq_info { |
195 | my ($self, $table) = @_; |
196 | |
0852b7b8 |
197 | local $SIG{__WARN__} = sub {}; |
198 | |
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199 | my $dbh = $self->schema->storage->dbh; |
0852b7b8 |
200 | local $dbh->{FetchHashKeyName} = 'NAME_lc'; |
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201 | my $sth = $dbh->prepare(qq{sp_helpconstraint \@objname='$table', \@nomsg='nomsg'}); |
0852b7b8 |
202 | eval { $sth->execute }; |
203 | return if $@; |
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204 | |
205 | my $constraints; |
206 | while (my $row = $sth->fetchrow_hashref) { |
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207 | if (exists $row->{constraint_type}) { |
208 | my $type = $row->{constraint_type} || ''; |
209 | if ($type =~ /^unique/i) { |
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210 | my $name = $row->{constraint_name}; |
1e1839d1 |
211 | push @{$constraints->{$name}}, |
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212 | ( split /,/, $row->{constraint_keys} ); |
1e1839d1 |
213 | } |
214 | } else { |
215 | my $def = $row->{definition} || next; |
216 | next unless $def =~ /^unique/i; |
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217 | my $name = $row->{name}; |
1e1839d1 |
218 | my ($keys) = $def =~ /\((.*)\)/; |
219 | $keys =~ s/\s*//g; |
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220 | my @keys = split /,/ => $keys; |
1e1839d1 |
221 | push @{$constraints->{$name}}, @keys; |
fe67d343 |
222 | } |
223 | } |
224 | |
225 | my @uniqs = map { [ $_ => $constraints->{$_} ] } keys %$constraints; |
226 | return \@uniqs; |
227 | } |
228 | |
229 | sub _extra_column_info { |
230 | my ($self, $info) = @_; |
231 | my %extra_info; |
232 | |
233 | my ($table, $column) = @$info{qw/TABLE_NAME COLUMN_NAME/}; |
234 | |
235 | my $dbh = $self->schema->storage->dbh; |
236 | my $sth = $dbh->prepare(qq{SELECT name FROM syscolumns WHERE id = (SELECT id FROM sysobjects WHERE name = '$table') AND (status & 0x80) = 0x80 AND name = '$column'}); |
237 | $sth->execute(); |
238 | |
239 | if ($sth->fetchrow_array) { |
240 | $extra_info{is_auto_increment} = 1; |
241 | } |
242 | |
243 | return \%extra_info; |
244 | } |
245 | |
246 | =head1 SEE ALSO |
247 | |
248 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
249 | L<DBIx::Class::Schema::Loader::DBI> |
250 | |
251 | =head1 AUTHOR |
252 | |
253 | Justin Hunter C<justin.d.hunter@gmail.com> |
254 | |
0852b7b8 |
255 | =head1 CONTRIBUTORS |
256 | |
257 | Rafael Kitover <rkitover@cpan.org> |
258 | |
fe67d343 |
259 | =cut |
260 | |
261 | 1; |