use strict;
use warnings;
-use base qw/DBIx::Class::Storage::DBI::MultiColumnIn/;
+use base qw/
+ DBIx::Class::Storage::DBI::MultiColumnIn
+/;
use mro 'c3';
use DBD::Pg qw(:pg_types);
+use Scope::Guard ();
+use Context::Preserve ();
# Ask for a DBD::Pg with array support
-warn "DBD::Pg 2.9.2 or greater is strongly recommended\n"
+warn __PACKAGE__.": DBD::Pg 2.9.2 or greater is strongly recommended\n"
if ($DBD::Pg::VERSION < 2.009002); # pg uses (used?) version::qv()
+sub _supports_insert_returning {
+ my $self = shift;
+
+ return 1
+ if $self->_server_info->{normalized_dbms_version} >= 8.002;
+
+ return 0;
+}
+
sub with_deferred_fk_checks {
my ($self, $sub) = @_;
- $self->_get_dbh->do('SET CONSTRAINTS ALL DEFERRED');
- $sub->();
+ my $txn_scope_guard = $self->txn_scope_guard;
+
+ $self->_do_query('SET CONSTRAINTS ALL DEFERRED');
+
+ my $sg = Scope::Guard->new(sub {
+ $self->_do_query('SET CONSTRAINTS ALL IMMEDIATE');
+ });
+
+ return Context::Preserve::preserve_context(sub { $sub->() },
+ after => sub { $txn_scope_guard->commit });
}
+# only used when INSERT ... RETURNING is disabled
sub last_insert_id {
- my ($self,$source,$col) = @_;
- my $seq = ($source->column_info($col)->{sequence} ||= $self->get_autoinc_seq($source,$col))
- or $self->throw_exception( "could not determine sequence for "
- . $source->name
- . ".$col, please consider adding a "
- . "schema-qualified sequence to its column info"
- );
-
- $self->_dbh_last_insert_id ($self->_dbh, $seq);
-}
+ my ($self,$source,@cols) = @_;
+
+ my @values;
+
+ for my $col (@cols) {
+ my $seq = ( $source->column_info($col)->{sequence} ||= $self->dbh_do('_dbh_get_autoinc_seq', $source, $col) )
+ or $self->throw_exception( sprintf(
+ 'could not determine sequence for column %s.%s, please consider adding a schema-qualified sequence to its column info',
+ $source->name,
+ $col,
+ ));
+
+ push @values, $self->_dbh->last_insert_id(undef, undef, undef, undef, {sequence => $seq});
+ }
-# there seems to be absolutely no reason to have this as a separate method,
-# but leaving intact in case someone is already overriding it
-sub _dbh_last_insert_id {
- my ($self, $dbh, $seq) = @_;
- $dbh->last_insert_id(undef, undef, undef, undef, {sequence => $seq});
+ return @values;
}
+sub _sequence_fetch {
+ my ($self, $function, $sequence) = @_;
+
+ $self->throw_exception('No sequence to fetch') unless $sequence;
+
+ my ($val) = $self->_get_dbh->selectrow_array(
+ sprintf ("select %s('%s')", $function, $sequence)
+ );
+
+ return $val;
+}
sub _dbh_get_autoinc_seq {
- my ($self, $dbh, $schema, $table, $col) = @_;
+ my ($self, $dbh, $source, $col) = @_;
+
+ my $schema;
+ my $table = $source->name;
+
+ # deref table name if it needs it
+ $table = $$table
+ if ref $table eq 'SCALAR';
+
+ # parse out schema name if present
+ if( $table =~ /^(.+)\.(.+)$/ ) {
+ ( $schema, $table ) = ( $1, $2 );
+ }
+
+ # get the column default using a Postgres-specific pg_catalog query
+ my $seq_expr = $self->_dbh_get_column_default( $dbh, $schema, $table, $col );
+
+ # if no default value is set on the column, or if we can't parse the
+ # default value as a sequence, throw.
+ unless ( defined $seq_expr and $seq_expr =~ /^nextval\(+'([^']+)'::(?:text|regclass)\)/i ) {
+ $seq_expr = '' unless defined $seq_expr;
+ $schema = "$schema." if defined $schema && length $schema;
+ $self->throw_exception( sprintf (
+ 'no sequence found for %s%s.%s, check the RDBMS table definition or explicitly set the '.
+ "'sequence' for this column in %s",
+ $schema ? "$schema." : '',
+ $table,
+ $col,
+ $source->source_name,
+ ));
+ }
+
+ return $1;
+}
+
+# custom method for fetching column default, since column_info has a
+# bug with older versions of DBD::Pg
+sub _dbh_get_column_default {
+ my ( $self, $dbh, $schema, $table, $col ) = @_;
+
+ # Build and execute a query into the pg_catalog to find the Pg
+ # expression for the default value for this column in this table.
+ # If the table name is schema-qualified, query using that specific
+ # schema name.
+
+ # Otherwise, find the table in the standard Postgres way, using the
+ # search path. This is done with the pg_catalog.pg_table_is_visible
+ # function, which returns true if a given table is 'visible',
+ # meaning the first table of that name to be found in the search
+ # path.
+
+ # I *think* we can be assured that this query will always find the
+ # correct column according to standard Postgres semantics.
+ #
+ # -- rbuels
my $sqlmaker = $self->sql_maker;
local $sqlmaker->{bindtype} = 'normal';
- my ($where, @bind) = $self->sql_maker->where ({
+ my ($where, @bind) = $sqlmaker->where ({
'a.attnum' => {'>', 0},
'c.relname' => $table,
'a.attname' => $col,
FROM pg_catalog.pg_attrdef d
WHERE d.adrelid = a.attrelid AND d.adnum = a.attnum AND a.atthasdef)
FROM pg_catalog.pg_class c
- JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
+ LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
JOIN pg_catalog.pg_attribute a ON a.attrelid = c.oid
$where
EOS
- unless (defined $seq_expr && $seq_expr =~ /^nextval\(+'([^']+)'::(?:text|regclass)\)/i ){
- $seq_expr = '' unless defined $seq_expr;
- $self->throw_exception("could not parse sequence expression: '$seq_expr'");
- }
-
- return $1;
+ return $seq_expr;
}
-sub get_autoinc_seq {
- my ($self,$source,$col) = @_;
-
- my $schema;
- my $table = $source->name;
-
- if (ref $table eq 'SCALAR') {
- $table = $$table;
- }
- elsif ($table =~ /^(.+)\.(.+)$/) {
- ($schema, $table) = ($1, $2);
- }
-
- $self->dbh_do('_dbh_get_autoinc_seq', $schema, $table, $col);
-}
sub sqlt_type {
return 'PostgreSQL';
}
}
-sub _sequence_fetch {
- my ( $self, $type, $seq ) = @_;
- my ($id) = $self->_get_dbh->selectrow_array("SELECT nextval('${seq}')");
- return $id;
-}
-
sub _svp_begin {
my ($self, $name) = @_;
=head1 SYNOPSIS
- # In your table classes
- __PACKAGE__->load_components(qw/PK::Auto Core/);
+ # In your result (table) classes
+ use base 'DBIx::Class::Core';
__PACKAGE__->set_primary_key('id');
__PACKAGE__->sequence('mysequence');
projects / dbsrgits/DBIx-Class.git / blobdiff