use warnings;
use base 'DBIx::Class';
+use mro 'c3';
use DBIx::Class::Carp;
use Try::Tiny;
use Scalar::Util qw/weaken blessed/;
-use Sub::Name 'subname';
-use B 'svref_2object';
+use DBIx::Class::_Util qw(
+ refcount quote_sub scope_guard
+ is_exception dbic_internal_try
+);
use Devel::GlobalDestruction;
use namespace::clean;
load_namespaces found ResultSet class $classname with no corresponding Result class
-If a Result class is found to already have a ResultSet class set using
-L</resultset_class> to some other class, you will be warned like this:
+If a ResultSource instance is found to already have a ResultSet class set
+using L<resultset_class|DBIx::Class::ResultSource/resultset_class> to some
+other class, you will be warned like this:
- We found ResultSet class '$rs_class' for '$result', but it seems
- that you had already set '$result' to use '$rs_set' instead
+ We found ResultSet class '$rs_class' for '$result_class', but it seems
+ that you had already set '$result_class' to use '$rs_set' instead
=head3 Examples
# be stripped.
sub _expand_relative_name {
my ($class, $name) = @_;
- return if !$name;
- $name = $class . '::' . $name if ! ($name =~ s/^\+//);
+ $name =~ s/^\+// or $name = "${class}::${name}";
return $name;
}
# namespace of $class. Untaints all findings as they can be assumed
# to be safe
sub _findallmod {
- my $proto = shift;
- my $ns = shift || ref $proto || $proto;
-
require Module::Find;
-
- # untaint result
- return map { $_ =~ /(.+)/ } Module::Find::findallmod($ns);
+ return map
+ { $_ =~ /(.+)/ } # untaint result
+ Module::Find::findallmod( $_[1] || ref $_[0] || $_[0] )
+ ;
}
# returns a hash of $shortname => $fullname for every package
# found in the given namespaces ($shortname is with the $fullname's
# namespace stripped off)
sub _map_namespaces {
- my ($class, @namespaces) = @_;
-
- my @results_hash;
- foreach my $namespace (@namespaces) {
- push(
- @results_hash,
- map { (substr($_, length "${namespace}::"), $_) }
- $class->_findallmod($namespace)
- );
+ my ($me, $namespaces) = @_;
+
+ my %res;
+ for my $ns (@$namespaces) {
+ $res{ substr($_, length "${ns}::") } = $_
+ for $me->_findallmod($ns);
}
- @results_hash;
+ \%res;
}
# returns the result_source_instance for the passed class/object,
my $me = shift;
my $rs_class = ref ($_[0]) || $_[0];
- return try {
+ return dbic_internal_try {
$rs_class->result_source_instance
} catch {
$me->throw_exception (
my $result_namespace = delete $args{result_namespace} || 'Result';
my $resultset_namespace = delete $args{resultset_namespace} || 'ResultSet';
+
my $default_resultset_class = delete $args{default_resultset_class};
+ $default_resultset_class = $class->_expand_relative_name($default_resultset_class)
+ if $default_resultset_class;
+
$class->throw_exception('load_namespaces: unknown option(s): '
. join(q{,}, map { qq{'$_'} } keys %args))
if scalar keys %args;
- $default_resultset_class
- = $class->_expand_relative_name($default_resultset_class);
-
for my $arg ($result_namespace, $resultset_namespace) {
- $arg = [ $arg ] if !ref($arg) && $arg;
+ $arg = [ $arg ] if ( $arg and ! ref $arg );
$class->throw_exception('load_namespaces: namespace arguments must be '
. 'a simple string or an arrayref')
$_ = $class->_expand_relative_name($_) for (@$arg);
}
- my %results = $class->_map_namespaces(@$result_namespace);
- my %resultsets = $class->_map_namespaces(@$resultset_namespace);
+ my $results_by_source_name = $class->_map_namespaces($result_namespace);
+ my $resultsets_by_source_name = $class->_map_namespaces($resultset_namespace);
my @to_register;
{
use warnings qw/redefine/;
# ensure classes are loaded and attached in inheritance order
- for my $res (values %results) {
- $class->ensure_class_loaded($res);
+ for my $result_class (values %$results_by_source_name) {
+ $class->ensure_class_loaded($result_class);
}
my %inh_idx;
- my @subclass_last = sort {
+ my @source_names_by_subclass_last = sort {
($inh_idx{$a} ||=
- scalar @{mro::get_linear_isa( $results{$a} )}
+ scalar @{mro::get_linear_isa( $results_by_source_name->{$a} )}
)
<=>
($inh_idx{$b} ||=
- scalar @{mro::get_linear_isa( $results{$b} )}
+ scalar @{mro::get_linear_isa( $results_by_source_name->{$b} )}
)
- } keys(%results);
+ } keys(%$results_by_source_name);
- foreach my $result (@subclass_last) {
- my $result_class = $results{$result};
+ foreach my $source_name (@source_names_by_subclass_last) {
+ my $result_class = $results_by_source_name->{$source_name};
- my $rs_class = delete $resultsets{$result};
- my $rs_set = $class->_ns_get_rsrc_instance ($result_class)->resultset_class;
+ my $preset_resultset_class = $class->_ns_get_rsrc_instance ($result_class)->resultset_class;
+ my $found_resultset_class = delete $resultsets_by_source_name->{$source_name};
- if($rs_set && $rs_set ne 'DBIx::Class::ResultSet') {
- if($rs_class && $rs_class ne $rs_set) {
- carp "We found ResultSet class '$rs_class' for '$result', but it seems "
- . "that you had already set '$result' to use '$rs_set' instead";
+ if($preset_resultset_class && $preset_resultset_class ne 'DBIx::Class::ResultSet') {
+ if($found_resultset_class && $found_resultset_class ne $preset_resultset_class) {
+ carp "We found ResultSet class '$found_resultset_class' matching '$results_by_source_name->{$source_name}', but it seems "
+ . "that you had already set the '$results_by_source_name->{$source_name}' resultet to '$preset_resultset_class' instead";
}
}
- elsif($rs_class ||= $default_resultset_class) {
- $class->ensure_class_loaded($rs_class);
- if(!$rs_class->isa("DBIx::Class::ResultSet")) {
- carp "load_namespaces found ResultSet class $rs_class that does not subclass DBIx::Class::ResultSet";
+ # elsif - there may be *no* default_resultset_class, in which case we fallback to
+ # DBIx::Class::Resultset and there is nothing to check
+ elsif($found_resultset_class ||= $default_resultset_class) {
+ $class->ensure_class_loaded($found_resultset_class);
+ if(!$found_resultset_class->isa("DBIx::Class::ResultSet")) {
+ carp "load_namespaces found ResultSet class '$found_resultset_class' that does not subclass DBIx::Class::ResultSet";
}
- $class->_ns_get_rsrc_instance ($result_class)->resultset_class($rs_class);
+ $class->_ns_get_rsrc_instance ($result_class)->resultset_class($found_resultset_class);
}
- my $source_name = $class->_ns_get_rsrc_instance ($result_class)->source_name || $result;
+ my $source_name = $class->_ns_get_rsrc_instance ($result_class)->source_name || $source_name;
push(@to_register, [ $source_name, $result_class ]);
}
}
- foreach (sort keys %resultsets) {
- carp "load_namespaces found ResultSet class $_ with no "
- . 'corresponding Result class';
+ foreach (sort keys %$resultsets_by_source_name) {
+ carp "load_namespaces found ResultSet class '$resultsets_by_source_name->{$_}' "
+ .'with no corresponding Result class';
}
Class::C3->reinitialize if DBIx::Class::_ENV_::OLD_MRO;
}
} else {
my @comp = map { substr $_, length "${class}::" }
- $class->_findallmod;
+ $class->_findallmod($class);
$comps_for{$class} = \@comp;
}
=cut
-sub sources { return keys %{shift->source_registrations}; }
+sub sources { keys %{shift->source_registrations} }
=head2 source
my ($self, @info) = @_;
return $self if !@info && $self->storage;
- my ($storage_class, $args) = ref $self->storage_type ?
- ($self->_normalize_storage_type($self->storage_type),{}) : ($self->storage_type, {});
+ my ($storage_class, $args) = ref $self->storage_type
+ ? $self->_normalize_storage_type($self->storage_type)
+ : $self->storage_type
+ ;
+
+ $storage_class =~ s/^::/DBIx::Class::Storage::/;
- $storage_class = 'DBIx::Class::Storage'.$storage_class
- if $storage_class =~ m/^::/;
- try {
+ dbic_internal_try {
$self->ensure_class_loaded ($storage_class);
}
catch {
"Unable to load storage class ${storage_class}: $_"
);
};
- my $storage = $storage_class->new($self=>$args);
+
+ my $storage = $storage_class->new( $self => $args||{} );
$storage->connect_info(\@info);
$self->storage($storage);
return $self;
=cut
-# this might be oversimplified
-# sub compose_namespace {
-# my ($self, $target, $base) = @_;
-
-# my $schema = $self->clone;
-# foreach my $source_name ($schema->sources) {
-# my $source = $schema->source($source_name);
-# my $target_class = "${target}::${source_name}";
-# $self->inject_base(
-# $target_class => $source->result_class, ($base ? $base : ())
-# );
-# $source->result_class($target_class);
-# $target_class->result_source_instance($source)
-# if $target_class->can('result_source_instance');
-# $schema->register_source($source_name, $source);
-# }
-# return $schema;
-# }
-
sub compose_namespace {
my ($self, $target, $base) = @_;
local *Class::C3::reinitialize = sub { } if DBIx::Class::_ENV_::OLD_MRO;
use warnings qw/redefine/;
- no strict qw/refs/;
foreach my $source_name ($self->sources) {
my $orig_source = $self->source($source_name);
}
}
- foreach my $meth (qw/class source resultset/) {
- no warnings 'redefine';
- *{"${target}::${meth}"} = subname "${target}::${meth}" =>
- sub { shift->schema->$meth(@_) };
- }
+ quote_sub "${target}::${_}" => "shift->schema->$_(\@_)"
+ for qw(class source resultset);
}
Class::C3->reinitialize() if DBIx::Class::_ENV_::OLD_MRO;
=cut
sub throw_exception {
- my $self = shift;
+ my ($self, @args) = @_;
+
+ if (
+ ! DBIx::Class::_Util::in_internal_try()
+ and
+ my $act = $self->exception_action
+ ) {
+
+ my $guard_disarmed;
+
+ my $guard = scope_guard {
+ return if $guard_disarmed;
+ local $SIG{__WARN__};
+ Carp::cluck("
+ !!! DBIx::Class INTERNAL PANIC !!!
+
+The exception_action() handler installed on '$self'
+aborted the stacktrace below via a longjmp (either via Return::Multilevel or
+plain goto, or Scope::Upper or something equally nefarious). There currently
+is nothing safe DBIx::Class can do, aside from displaying this error. A future
+version ( 0.082900, when available ) will reduce the cases in which the
+handler is invoked, but this is neither a complete solution, nor can it do
+anything for other software that might be affected by a similar problem.
+
+ !!! FIX YOUR ERROR HANDLING !!!
+
+This guard was activated beginning"
+ );
+ };
- if (my $act = $self->exception_action) {
- if ($act->(@_)) {
- DBIx::Class::Exception->throw(
+ dbic_internal_try {
+ # if it throws - good, we'll assign to @args in the end
+ # if it doesn't - do different things depending on RV truthiness
+ if( $act->(@args) ) {
+ $args[0] = (
"Invocation of the exception_action handler installed on $self did *not*"
.' result in an exception. DBIx::Class is unable to function without a reliable'
- .' exception mechanism, ensure that exception_action does not hide exceptions'
- ." (original error: $_[0])"
- );
+ .' exception mechanism, ensure your exception_action does not hide exceptions'
+ ." (original error: $args[0])"
+ );
+ }
+ else {
+ carp_unique (
+ "The exception_action handler installed on $self returned false instead"
+ .' of throwing an exception. This behavior has been deprecated, adjust your'
+ .' handler to always rethrow the supplied error'
+ );
+ }
+
+ 1;
}
+ catch {
+ # We call this to get the necessary warnings emitted and disregard the RV
+ # as it's definitely an exception if we got as far as this catch{} block
+ is_exception(
+ $args[0] = $_
+ );
+ };
- carp_unique (
- "The exception_action handler installed on $self returned false instead"
- .' of throwing an exception. This behavior has been deprecated, adjust your'
- .' handler to always rethrow the supplied error.'
- );
+ # Done guarding against https://github.com/PerlDancer/Dancer2/issues/1125
+ $guard_disarmed = 1;
}
- DBIx::Class::Exception->throw($_[0], $self->stacktrace);
+ DBIx::Class::Exception->throw( $args[0], $self->stacktrace );
}
=head2 deploy
A convenient shortcut to
C<< $self->storage->deployment_statements($self, @args) >>.
-Returns the SQL statements used by L</deploy> and
-L<DBIx::Class::Schema::Storage/deploy>.
+Returns the statements used by L</deploy> and
+L<DBIx::Class::Storage/deploy>.
=cut
sub ddl_filename {
my ($self, $type, $version, $dir, $preversion) = @_;
- require File::Spec;
-
$version = "$preversion-$version" if $preversion;
my $class = blessed($self) || $self;
$class =~ s/::/-/g;
- return File::Spec->catfile($dir, "$class-$version-$type.sql");
+ return "$dir/$class-$version-$type.sql";
}
=head2 thaw
sub thaw {
my ($self, $obj) = @_;
local $DBIx::Class::ResultSourceHandle::thaw_schema = $self;
- require Storable;
return Storable::thaw($obj);
}
=head2 freeze
-This doesn't actually do anything more than call L<Storable/nfreeze>, it is just
-provided here for symmetry.
+This doesn't actually do anything beyond calling L<nfreeze|Storable/SYNOPSIS>,
+it is just provided here for symmetry.
=cut
sub freeze {
- require Storable;
return Storable::nfreeze($_[1]);
}
sub dclone {
my ($self, $obj) = @_;
local $DBIx::Class::ResultSourceHandle::thaw_schema = $self;
- require Storable;
return Storable::dclone($obj);
}
return $source if $params->{extra};
my $rs_class = $source->result_class;
- if ($rs_class and my $rsrc = try { $rs_class->result_source_instance } ) {
+ if ($rs_class and my $rsrc = dbic_internal_try { $rs_class->result_source_instance } ) {
my %map = %{$self->class_mappings};
if (
exists $map{$rs_class}
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;
my $self = shift;
# which will serve as a signal to not try doing anything else
# however beware - on older perls the exception seems randomly untrappable
# due to some weird race condition during thread joining :(((
- if (ref $srcs->{$source_name} and svref_2object($srcs->{$source_name})->REFCNT > 1) {
+ if (length ref $srcs->{$source_name} and refcount($srcs->{$source_name}) > 1) {
+ local $SIG{__DIE__} if $SIG{__DIE__};
local $@;
eval {
$srcs->{$source_name}->schema($self);
last;
}
}
+
+ # Dummy NEXTSTATE ensuring the all temporaries on the stack are garbage
+ # collected before leaving this scope. Depending on the code above, this
+ # may very well be just a preventive measure guarding future modifications
+ undef;
}
sub _unregister_source {
carp_once "compose_connection deprecated as of 0.08000"
unless $INC{"DBIx/Class/CDBICompat.pm"};
- my $base = 'DBIx::Class::ResultSetProxy';
- try {
- eval "require ${base};"
+ dbic_internal_try {
+ require DBIx::Class::ResultSetProxy;
}
catch {
$self->throw_exception
- ("No arguments to load_classes and couldn't load ${base} ($_)")
+ ("No arguments to load_classes and couldn't load DBIx::Class::ResultSetProxy ($_)")
};
if ($self eq $target) {
foreach my $source_name ($self->sources) {
my $source = $self->source($source_name);
my $class = $source->result_class;
- $self->inject_base($class, $base);
+ $self->inject_base($class, 'DBIx::Class::ResultSetProxy');
$class->mk_classdata(resultset_instance => $source->resultset);
$class->mk_classdata(class_resolver => $self);
}
return $self;
}
- my $schema = $self->compose_namespace($target, $base);
- {
- no strict 'refs';
- my $name = join '::', $target, 'schema';
- *$name = subname $name, sub { $schema };
- }
+ my $schema = $self->compose_namespace($target, 'DBIx::Class::ResultSetProxy');
+ quote_sub "${target}::schema", '$s', { '$s' => \$schema };
$schema->connection(@info);
foreach my $source_name ($schema->sources) {
return $schema;
}
-1;
-
-=head1 AUTHOR AND CONTRIBUTORS
+=head1 FURTHER QUESTIONS?
-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
+
+1;
projects / dbsrgits/DBIx-Class.git / blobdiff