__PACKAGE__->mk_group_accessors('simple' => qw/_ordered_columns
_columns _primaries _unique_constraints name resultset_attributes
- schema from _relationships column_info_from_storage source_info/);
+ schema from _relationships column_info_from_storage source_info
+ source_name/);
__PACKAGE__->mk_group_accessors('component_class' => qw/resultset_class
result_class/);
-__PACKAGE__->mk_group_ro_accessors('simple' => qw/source_name/);
-
=head1 NAME
DBIx::Class::ResultSource - Result source object
the hashref as the column_info for that column. Repeated calls of this
method will add more columns, not replace them.
+The column names given will be created as accessor methods on your
+L<DBIx::Class::Row> objects, you can change the name of the accessor
+by supplying an L</accessor> in the column_info hash.
+
The contents of the column_info are not set in stone. The following
keys are currently recognised/used by DBIx::Class:
=item accessor
-Use this to set the name of the accessor for this column. If unset,
+Use this to set the name of the accessor method for this column. If unset,
the name of the column will be used.
=item data_type
will attempt to retrieve the name of the sequence from the database
automatically.
-=item extras
+=item auto_nextval
+
+Set this to a true value for a column whose value is retrieved
+automatically from an oracle sequence. If you do not use an oracle
+trigger to get the nextval, you have to set sequence as well.
+
+=item extra
This is used by L<DBIx::Class::Schema/deploy> and L<SQL::Translator>
-to add extra non-generic data to the column. For example: C<< extras
+to add extra non-generic data to the column. For example: C<< extra
=> { unsigned => 1} >> is used by the MySQL producer to set an integer
column to unsigned. For more details, see
L<SQL::Translator::Producer::MySQL>.
unless $cond;
$attrs ||= {};
+ # Check foreign and self are right in cond
+ if ( (ref $cond ||'') eq 'HASH') {
+ for (keys %$cond) {
+ $self->throw_exception("Keys of condition should be of form 'foreign.col', not '$_'")
+ if /\./ && !/^foreign\./;
+ }
+ }
+
my %rels = %{ $self->_relationships };
$rels{$rel} = { class => $f_source_name,
source => $f_source_name,
my $otherrel_info = $othertable->relationship_info($otherrel);
my $back = $othertable->related_source($otherrel);
- next unless $back->name eq $self->name;
+ next unless $back->source_name eq $self->source_name;
my @othertestconds;
=cut
sub resolve_join {
- my ($self, $join, $alias, $seen) = @_;
+ my ($self, $join, $alias, $seen, $force_left) = @_;
$seen ||= {};
+ $force_left ||= { force => 0 };
if (ref $join eq 'ARRAY') {
return map { $self->resolve_join($_, $alias, $seen) } @$join;
} elsif (ref $join eq 'HASH') {
return
map {
my $as = ($seen->{$_} ? $_.'_'.($seen->{$_}+1) : $_);
- ($self->resolve_join($_, $alias, $seen),
- $self->related_source($_)->resolve_join($join->{$_}, $as, $seen));
+ local $force_left->{force};
+ (
+ $self->resolve_join($_, $alias, $seen, $force_left),
+ $self->related_source($_)->resolve_join(
+ $join->{$_}, $as, $seen, $force_left
+ )
+ );
} keys %$join;
} elsif (ref $join) {
$self->throw_exception("No idea how to resolve join reftype ".ref $join);
my $as = ($count > 1 ? "${join}_${count}" : $join);
my $rel_info = $self->relationship_info($join);
$self->throw_exception("No such relationship ${join}") unless $rel_info;
- my $type = $rel_info->{attrs}{join_type} || '';
+ my $type;
+ if ($force_left->{force}) {
+ $type = 'left';
+ } else {
+ $type = $rel_info->{attrs}{join_type} || '';
+ $force_left->{force} = 1 if lc($type) eq 'left';
+ }
return [ { $as => $self->related_source($join)->from,
-join_type => $type },
$self->resolve_condition($rel_info->{cond}, $as, $alias) ];
}
}
+=head2 pk_depends_on
+
+=over 4
+
+=item Arguments: $relname, $rel_data
+
+=back
+
+Determines whether a relation is dependent on an object from this source
+having already been inserted. Takes the name of the relationship and a
+hashref of columns of the related object.
+
+=cut
+
+sub pk_depends_on {
+ my ($self, $relname, $rel_data) = @_;
+ my $cond = $self->relationship_info($relname)->{cond};
+
+ return 0 unless ref($cond) eq 'HASH';
+
+ # map { foreign.foo => 'self.bar' } to { bar => 'foo' }
+
+ my $keyhash = { map { my $x = $_; $x =~ s/.*\.//; $x; } reverse %$cond };
+
+ # assume anything that references our PK probably is dependent on us
+ # rather than vice versa, unless the far side is (a) defined or (b)
+ # auto-increment
+
+ my $rel_source = $self->related_source($relname);
+
+ foreach my $p ($self->primary_columns) {
+ if (exists $keyhash->{$p}) {
+ unless (defined($rel_data->{$keyhash->{$p}})
+ || $rel_source->column_info($keyhash->{$p})
+ ->{is_auto_increment}) {
+ return 0;
+ }
+ }
+ }
+
+ return 1;
+}
+
=head2 resolve_condition
=over 4
=cut
+our $UNRESOLVABLE_CONDITION = \'1 = 0';
+
sub resolve_condition {
my ($self, $cond, $as, $for) = @_;
#warn %$cond;
$self->throw_exception("Invalid rel cond val ${v}");
if (ref $for) { # Object
#warn "$self $k $for $v";
+ unless ($for->has_column_loaded($v)) {
+ if ($for->in_storage) {
+ $self->throw_exception("Column ${v} not loaded on ${for} trying to reolve relationship");
+ }
+ return $UNRESOLVABLE_CONDITION;
+ }
$ret{$k} = $for->get_column($v);
+ #$ret{$k} = $for->get_column($v) if $for->has_column_loaded($v);
#warn %ret;
} elsif (!defined $for) { # undef, i.e. "no object"
$ret{$k} = undef;
+ } elsif (ref $as eq 'HASH') { # reverse hashref
+ $ret{$v} = $as->{$k};
} elsif (ref $as) { # reverse object
$ret{$v} = $as->get_column($k);
} elsif (!defined $as) { # undef, i.e. "no reverse object"
$self->throw_exception(
"Can't prefetch has_many ${pre} (join cond too complex)")
unless ref($rel_info->{cond}) eq 'HASH';
+ my $dots = @{[$as_prefix =~ m/\./g]} + 1; # +1 to match the ".${as_prefix}"
+ if (my ($fail) = grep { @{[$_ =~ m/\./g]} == $dots }
+ keys %{$collapse}) {
+ my ($last) = ($fail =~ /([^\.]+)$/);
+ $self->throw_exception(
+ "Can't prefetch multiple has_many rels ${last} and ${pre}"
+ .(length($as_prefix) ? "at the same level (${as_prefix})"
+ : "at top level"
+ ));
+ }
#my @col = map { (/^self\.(.+)$/ ? ("${as_prefix}.$1") : ()); }
# values %{$rel_info->{cond}};
$collapse->{".${as_prefix}${pre}"} = [ $rel_source->primary_columns ];
Set the class of the resultset, this is useful if you want to create your
own resultset methods. Create your own class derived from
-L<DBIx::Class::ResultSet>, and set it here.
+L<DBIx::Class::ResultSet>, and set it here. If called with no arguments,
+this method returns the name of the existing resultset class, if one
+exists.
=head2 resultset_attributes
) if scalar @_;
return $self->resultset_class->new(
- $self, $self->{resultset_attributes}
+ $self,
+ {
+ %{$self->{resultset_attributes}},
+ %{$self->schema->default_resultset_attributes}
+ },
);
}
}
}
+=head2 sqlt_deploy_hook($sqlt_table)
+
+An optional sub which you can declare in your own Schema class that will get
+passed the L<SQL::Translator::Schema::Table> object when you deploy the schema
+via L</create_ddl_dir> or L</deploy>.
+
+For an example of what you can do with this, see
+L<DBIx::Class::Manual::Cookbook/Adding Indexes And Functions To Your SQL>.
+
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
projects / dbsrgits/DBIx-Class.git / blobdiff