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e46df41a |
1 | package DBIx::Class::Storage::DBI::Firebird::Common; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | use base qw/DBIx::Class::Storage::DBI/; |
6 | use mro 'c3'; |
7 | use List::Util 'first'; |
8 | use namespace::clean; |
9 | |
10 | =head1 NAME |
11 | |
12 | DBIx::Class::Storage::DBI::Firebird::Common - Driver Base Class for the Firebird RDBMS |
13 | |
14 | =head1 DESCRIPTION |
15 | |
16 | This class implements autoincrements for Firebird using C<RETURNING> as well as |
17 | L<auto_nextval|DBIx::Class::ResultSource/auto_nextval>, savepoints and server |
18 | version detection. |
19 | |
20 | =cut |
21 | |
22 | # set default |
23 | __PACKAGE__->_use_insert_returning (1); |
24 | __PACKAGE__->sql_limit_dialect ('FirstSkip'); |
25 | __PACKAGE__->sql_quote_char ('"'); |
26 | |
e5a62c46 |
27 | __PACKAGE__->datetime_parser_type( |
28 | 'DBIx::Class::Storage::DBI::InterBase::DateTime::Format' |
29 | ); |
30 | |
e46df41a |
31 | sub _sequence_fetch { |
32 | my ($self, $nextval, $sequence) = @_; |
33 | |
34 | $self->throw_exception("Can only fetch 'nextval' for a sequence") |
35 | if $nextval !~ /^nextval$/i; |
36 | |
37 | $self->throw_exception('No sequence to fetch') unless $sequence; |
38 | |
39 | my ($val) = $self->_get_dbh->selectrow_array(sprintf |
40 | 'SELECT GEN_ID(%s, 1) FROM rdb$database', |
41 | $self->sql_maker->_quote($sequence) |
42 | ); |
43 | |
44 | return $val; |
45 | } |
46 | |
47 | sub _dbh_get_autoinc_seq { |
48 | my ($self, $dbh, $source, $col) = @_; |
49 | |
50 | my $table_name = $source->from; |
51 | $table_name = $$table_name if ref $table_name; |
52 | $table_name = $self->sql_maker->quote_char ? $table_name : uc($table_name); |
53 | |
54 | local $dbh->{LongReadLen} = 100000; |
55 | local $dbh->{LongTruncOk} = 1; |
56 | |
57 | my $sth = $dbh->prepare(<<'EOF'); |
58 | SELECT t.rdb$trigger_source |
59 | FROM rdb$triggers t |
60 | WHERE t.rdb$relation_name = ? |
61 | AND t.rdb$system_flag = 0 -- user defined |
62 | AND t.rdb$trigger_type = 1 -- BEFORE INSERT |
63 | EOF |
64 | $sth->execute($table_name); |
65 | |
66 | while (my ($trigger) = $sth->fetchrow_array) { |
d77ee505 |
67 | my @trig_cols = map |
68 | { /^"([^"]+)/ ? $1 : uc($_) } |
69 | $trigger =~ /new\.("?\w+"?)/ig |
70 | ; |
e46df41a |
71 | |
72 | my ($quoted, $generator) = $trigger =~ |
73 | /(?:gen_id\s* \( \s* |next \s* value \s* for \s*)(")?(\w+)/ix; |
74 | |
75 | if ($generator) { |
76 | $generator = uc $generator unless $quoted; |
77 | |
78 | return $generator |
79 | if first { |
80 | $self->sql_maker->quote_char ? ($_ eq $col) : (uc($_) eq uc($col)) |
81 | } @trig_cols; |
82 | } |
83 | } |
84 | |
85 | return undef; |
86 | } |
87 | |
90d7422f |
88 | sub _exec_svp_begin { |
e46df41a |
89 | my ($self, $name) = @_; |
90 | |
91 | $self->_dbh->do("SAVEPOINT $name"); |
92 | } |
93 | |
90d7422f |
94 | sub _exec_svp_release { |
e46df41a |
95 | my ($self, $name) = @_; |
96 | |
97 | $self->_dbh->do("RELEASE SAVEPOINT $name"); |
98 | } |
99 | |
90d7422f |
100 | sub _exec_svp_rollback { |
e46df41a |
101 | my ($self, $name) = @_; |
102 | |
103 | $self->_dbh->do("ROLLBACK TO SAVEPOINT $name") |
104 | } |
105 | |
106 | # http://www.firebirdfaq.org/faq223/ |
107 | sub _get_server_version { |
108 | my $self = shift; |
109 | |
110 | return $self->_get_dbh->selectrow_array(q{ |
111 | SELECT rdb$get_context('SYSTEM', 'ENGINE_VERSION') FROM rdb$database |
112 | }); |
113 | } |
114 | |
e5a62c46 |
115 | package # hide from PAUSE |
116 | DBIx::Class::Storage::DBI::InterBase::DateTime::Format; |
117 | |
118 | my $timestamp_format = '%Y-%m-%d %H:%M:%S.%4N'; # %F %T |
119 | my $date_format = '%Y-%m-%d'; |
120 | |
121 | my ($timestamp_parser, $date_parser); |
122 | |
123 | sub parse_datetime { |
124 | shift; |
125 | require DateTime::Format::Strptime; |
126 | $timestamp_parser ||= DateTime::Format::Strptime->new( |
127 | pattern => $timestamp_format, |
128 | on_error => 'croak', |
129 | ); |
130 | return $timestamp_parser->parse_datetime(shift); |
131 | } |
132 | |
133 | sub format_datetime { |
134 | shift; |
135 | require DateTime::Format::Strptime; |
136 | $timestamp_parser ||= DateTime::Format::Strptime->new( |
137 | pattern => $timestamp_format, |
138 | on_error => 'croak', |
139 | ); |
140 | return $timestamp_parser->format_datetime(shift); |
141 | } |
142 | |
143 | sub parse_date { |
144 | shift; |
145 | require DateTime::Format::Strptime; |
146 | $date_parser ||= DateTime::Format::Strptime->new( |
147 | pattern => $date_format, |
148 | on_error => 'croak', |
149 | ); |
150 | return $date_parser->parse_datetime(shift); |
151 | } |
152 | |
153 | sub format_date { |
154 | shift; |
155 | require DateTime::Format::Strptime; |
156 | $date_parser ||= DateTime::Format::Strptime->new( |
157 | pattern => $date_format, |
158 | on_error => 'croak', |
159 | ); |
160 | return $date_parser->format_datetime(shift); |
161 | } |
162 | |
e46df41a |
163 | 1; |
164 | |
165 | =head1 CAVEATS |
166 | |
167 | =over 4 |
168 | |
169 | =item * |
170 | |
171 | C<last_insert_id> support by default only works for Firebird versions 2 or |
172 | greater, L<auto_nextval|DBIx::Class::ResultSource/auto_nextval> however should |
173 | work with earlier versions. |
174 | |
175 | =back |
176 | |
177 | =head1 AUTHOR |
178 | |
179 | See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>. |
180 | |
181 | =head1 LICENSE |
182 | |
183 | You may distribute this code under the same terms as Perl itself. |
184 | |
185 | =cut |
186 | # vim:sts=2 sw=2: |