L<DBIx::Class::ResultSourceProxy::Table> component, which defines
the L<table|DBIx::Class::ResultSourceProxy::Table/table> method.
When called, C<table> creates and stores an instance of
-L<DBIx::Class::ResultSoure::Table>. Luckily, to use tables as result
+L<DBIx::Class::ResultSource::Table>. Luckily, to use tables as result
sources, you don't need to remember any of this.
Result sources representing select queries, or views, can also be
=head2 Finding result source objects
As mentioned above, a result source instance is created and stored for
-you when you define a L<result class|DBIx::Class::Manual::Glossary/Result class>.
+you when you define a
+L<Result Class|DBIx::Class::Manual::Glossary/Result Class>.
You can retrieve the result source at runtime in the following ways:
=head1 METHODS
-=pod
+=head2 new
+
+ $class->new();
+
+ $class->new({attribute_name => value});
+
+Creates a new ResultSource object. Not normally called directly by end users.
=cut
restriction. This is currently only used to create tables from your
schema, see L<DBIx::Class::Schema/deploy>.
+ { size => [ 9, 6 ] }
+
+For decimal or float values you can specify an ArrayRef in order to
+control precision, assuming your database's
+L<SQL::Translator::Producer> supports it.
+
=item is_nullable
{ is_nullable => 1 }
Defines one or more columns as primary key for this source. Must be
called after L</add_columns>.
-Additionally, defines a L<unique constraint|add_unique_constraint>
+Additionally, defines a L<unique constraint|/add_unique_constraint>
named C<primary>.
Note: you normally do want to define a primary key on your sources
sub from { die 'Virtual method!' }
+=head2 source_info
+
+Stores a hashref of per-source metadata. No specific key names
+have yet been standardized, the examples below are purely hypothetical
+and don't actually accomplish anything on their own:
+
+ __PACKAGE__->source_info({
+ "_tablespace" => 'fast_disk_array_3',
+ "_engine" => 'InnoDB',
+ });
+
=head2 schema
=over 4
my %rels = %{ $self->_relationships };
$rels{$rel} = { class => $f_source_name,
source => $f_source_name,
- _original_name => $rel,
cond => $cond,
attrs => $attrs };
$self->_relationships(\%rels);
}
my $args = {
- condition => $cond,
-
# where-is-waldo block guesses relname, then further down we override it if available
(
$is_objlike[1] ? ( rel_name => $res_args[0], self_alias => $res_args[0], foreign_alias => 'me', self_result_object => $res_args[1] )
( $rel_name ? ( rel_name => $rel_name ) : () ),
};
+
+ # Allowing passing relconds different than the relationshup itself is cute,
+ # but likely dangerous. Remove that from the (still unofficial) API of
+ # _resolve_relationship_condition, and instead make it "hard on purpose"
+ local $self->relationship_info( $args->{rel_name} )->{cond} = $cond if defined $cond;
+
#######################
# now it's fucking easy isn't it?!
# self_result_object => (either not supplied or a result object)
# require_join_free_condition => (boolean, throws on failure to construct a JF-cond)
# infer_values_based_on => (either not supplied or a hashref, implies require_join_free_condition)
-# condition => (sqla cond struct, optional, defeaults to from $self->rel_info(rel_name)->{cond})
#
## returns a hash
# condition => (a valid *likely fully qualified* sqla cond structure)
$self->throw_exception("Arguments 'self_alias' and 'foreign_alias' may not be identical")
if $args->{self_alias} eq $args->{foreign_alias};
+# TEMP
+ my $exception_rel_id = "relationship '$args->{rel_name}' on source '@{[ $self->source_name ]}'";
+
my $rel_info = $self->relationship_info($args->{rel_name})
# TEMP
# or $self->throw_exception( "No such $exception_rel_id" );
or carp_unique("Requesting resolution on non-existent relationship '$args->{rel_name}' on source '@{[ $self->source_name ]}': fix your code *soon*, as it will break with the next major version");
- my $exception_rel_id = "relationship '$rel_info->{_original_name}' on source '@{[ $self->source_name ]}'";
+# TEMP
+ $exception_rel_id = "relationship '$rel_info->{_original_name}' on source '@{[ $self->source_name ]}'"
+ if $rel_info and exists $rel_info->{_original_name};
$self->throw_exception("No practical way to resolve $exception_rel_id between two data structures")
if exists $args->{self_result_object} and exists $args->{foreign_values};
$args->{require_join_free_condition} ||= !!$args->{infer_values_based_on};
- $args->{condition} ||= $rel_info->{cond};
-
- $self->throw_exception( "Argument 'self_result_object' must be an object of class '@{[ $self->result_class ]}'" )
+ $self->throw_exception( "Argument 'self_result_object' must be an object inheriting from DBIx::Class::Row" )
if (
exists $args->{self_result_object}
and
- ( ! defined blessed $args->{self_result_object} or ! $args->{self_result_object}->isa($self->result_class) )
+ ( ! defined blessed $args->{self_result_object} or ! $args->{self_result_object}->isa('DBIx::Class::Row') )
)
;
- my $rel_rsrc = $self->related_source($args->{rel_name});
+#TEMP
+ my $rel_rsrc;# = $self->related_source($args->{rel_name});
if (exists $args->{foreign_values}) {
+# TEMP
+ $rel_rsrc ||= $self->related_source($args->{rel_name});
+
if (defined blessed $args->{foreign_values}) {
$self->throw_exception( "Objects supplied as 'foreign_values' ($args->{foreign_values}) must inherit from DBIx::Class::Row" )
my $ret;
- if (ref $args->{condition} eq 'CODE') {
+ if (ref $rel_info->{cond} eq 'CODE') {
my $cref_args = {
rel_name => $args->{rel_name},
$cref_args->{self_rowobj} = $cref_args->{self_result_object}
if exists $cref_args->{self_result_object};
- ($ret->{condition}, $ret->{join_free_condition}, my @extra) = $args->{condition}->($cref_args);
+ ($ret->{condition}, $ret->{join_free_condition}, my @extra) = $rel_info->{cond}->($cref_args);
# sanity check
$self->throw_exception("A custom condition coderef can return at most 2 conditions, but $exception_rel_id returned extra values: @extra")
"The join-free condition returned for $exception_rel_id must be a hash reference"
) unless ref $jfc eq 'HASH';
+# TEMP
+ $rel_rsrc ||= $self->related_source($args->{rel_name});
+
my ($joinfree_alias, $joinfree_source);
if (defined $args->{self_result_object}) {
$joinfree_alias = $args->{foreign_alias};
}
}
- elsif (ref $args->{condition} eq 'HASH') {
+ elsif (ref $rel_info->{cond} eq 'HASH') {
# the condition is static - use parallel arrays
# for a "pivot" depending on which side of the
# rel did we get as an object
my (@f_cols, @l_cols);
- for my $fc (keys %{$args->{condition}}) {
- my $lc = $args->{condition}{$fc};
+ for my $fc (keys %{ $rel_info->{cond} }) {
+ my $lc = $rel_info->{cond}{$fc};
# FIXME STRICTMODE should probably check these are valid columns
$fc =~ s/^foreign\.// ||
}
}
}
- elsif (ref $args->{condition} eq 'ARRAY') {
- if (@{$args->{condition}} == 0) {
+ elsif (ref $rel_info->{cond} eq 'ARRAY') {
+ if (@{ $rel_info->{cond} } == 0) {
$ret = {
condition => UNRESOLVABLE_CONDITION,
join_free_condition => UNRESOLVABLE_CONDITION,
};
}
- elsif (@{$args->{condition}} == 1) {
- $ret = $self->_resolve_relationship_condition({
- %$args,
- condition => $args->{condition}[0],
- });
- }
else {
- # we are discarding inferred values here... likely incorrect...
- # then again - the entire thing is an OR, so we *can't* use them anyway
- for my $subcond ( map
- { $self->_resolve_relationship_condition({ %$args, condition => $_ }) }
- @{$args->{condition}}
- ) {
- $self->throw_exception('Either all or none of the OR-condition members must resolve to a join-free condition')
- if ( $ret and ( $ret->{join_free_condition} xor $subcond->{join_free_condition} ) );
+ my @subconds = map {
+ local $rel_info->{cond} = $_;
+ $self->_resolve_relationship_condition( $args );
+ } @{ $rel_info->{cond} };
+
+ if( @{ $rel_info->{cond} } == 1 ) {
+ $ret = $subconds[0];
+ }
+ else {
+ # we are discarding inferred values here... likely incorrect...
+ # then again - the entire thing is an OR, so we *can't* use them anyway
+ for my $subcond ( @subconds ) {
+ $self->throw_exception('Either all or none of the OR-condition members must resolve to a join-free condition')
+ if ( $ret and ( $ret->{join_free_condition} xor $subcond->{join_free_condition} ) );
- $subcond->{$_} and push @{$ret->{$_}}, $subcond->{$_} for (qw(condition join_free_condition));
+ $subcond->{$_} and push @{$ret->{$_}}, $subcond->{$_} for (qw(condition join_free_condition));
+ }
}
}
}
else {
- $self->throw_exception ("Can't handle condition $args->{condition} for $exception_rel_id yet :(");
+ $self->throw_exception ("Can't handle condition $rel_info->{cond} for $exception_rel_id yet :(");
}
$self->throw_exception(ucfirst "$exception_rel_id does not resolve to a join-free condition fragment") if (
# we got something back - sanity check and infer values if we can
my @nonvalues;
- if ( my $jfc = $ret->{join_free_condition} and $ret->{join_free_condition} ne UNRESOLVABLE_CONDITION ) {
+ if (
+ $ret->{join_free_condition}
+ and
+ $ret->{join_free_condition} ne UNRESOLVABLE_CONDITION
+ and
+ my $jfc = $storage->_collapse_cond( $ret->{join_free_condition} )
+ ) {
my $jfc_eqs = $storage->_extract_fixed_condition_columns($jfc, 'consider_nulls');
next if $col_eqs->{$lhs} eq UNRESOLVABLE_CONDITION;
+# TEMP
+ $rel_rsrc ||= $self->related_source($args->{rel_name});
+
# there is no way to know who is right and who is left in a cref
# therefore a full blown resolution call, and figure out the
# direction a bit further below
my $global_phase_destroy;
sub DESTROY {
+ ### NO detected_reinvoked_destructor check
+ ### This code very much relies on being called multuple times
+
return if $global_phase_destroy ||= in_global_destruction;
######
;
}
-=head2 source_info
-
-Stores a hashref of per-source metadata. No specific key names
-have yet been standardized, the examples below are purely hypothetical
-and don't actually accomplish anything on their own:
-
- __PACKAGE__->source_info({
- "_tablespace" => 'fast_disk_array_3',
- "_engine" => 'InnoDB',
- });
-
-=head2 new
-
- $class->new();
-
- $class->new({attribute_name => value});
-
-Creates a new ResultSource object. Not normally called directly by end users.
-
=head2 column_info_from_storage
=over
metadata from storage as necessary. This is *deprecated*, and
should not be used. It will be removed before 1.0.
+=head1 FURTHER QUESTIONS?
-=head1 AUTHOR AND CONTRIBUTORS
-
-See L<AUTHOR|DBIx::Class/AUTHOR> and L<CONTRIBUTORS|DBIx::Class/CONTRIBUTORS> in DBIx::Class
+Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
-=head1 LICENSE
+=head1 COPYRIGHT AND LICENSE
-You may distribute this code under the same terms as Perl itself.
+This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
+by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
+redistribute it and/or modify it under the same terms as the
+L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.
=cut
projects / dbsrgits/DBIx-Class.git / blobdiff