--- /dev/null
+package Reaction::InterfaceModel::Reflector::DBIC::Loader;
+
+use aliased 'Reaction::InterfaceModel::Action::DBIC::ResultSet::Create';
+use aliased 'Reaction::InterfaceModel::Action::DBIC::ResultSet::DeleteAll';
+use aliased 'Reaction::InterfaceModel::Action::DBIC::Result::Update';
+use aliased 'Reaction::InterfaceModel::Action::DBIC::Result::Delete';
+
+use aliased 'Reaction::InterfaceModel::Collection::Virtual::ResultSet';
+use aliased 'Reaction::InterfaceModel::Object';
+use aliased 'Reaction::InterfaceModel::Action';
+use Reaction::Class;
+use Class::MOP;
+
+use Catalyst::Utils;
+
+class Loader, which {
+
+ #user defined actions and prototypes
+ has object_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
+ has collection_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
+
+ #which actions to create by default
+ has default_object_actions => (isa => "ArrayRef", is => "rw", lazy_build => 1);
+ has default_collection_actions => (isa => "ArrayRef", is => "rw", lazy_build => 1);
+
+ #builtin actions and prototypes
+ has builtin_object_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
+ has builtin_collection_actions => (isa => "HashRef", is => "rw", lazy_build => 1);
+
+ implements _build_object_actions => as { {} };
+ implements _build_collection_actions => as { {} };
+
+ implements _build_default_object_actions => as { [ qw/Update Delete/ ] };
+ implements _build_default_collection_actions => as { [ qw/Create DeleteAll/ ] };
+
+ implements _build_builtin_object_actions => as {
+ {
+ Update => { name => 'Update', base => Update },
+ Delete => { name => 'Delete', base => Delete, attributes => [] },
+ };
+ };
+
+ implements _build_builtin_collection_actions => as {
+ {
+ Create => {name => 'Create', base => Create },
+ DeleteAll => {name => 'DeleteAll', base => DeleteAll, attributes => [] }
+ };
+ };
+
+ implements _all_object_actions => as {
+ my $self = shift;
+ return $self->merge_hashes
+ ($self->builtin_object_actions, $self->object_actions);
+ };
+
+ implements _all_collection_actions => as {
+ my $self = shift;
+ return $self->merge_hashes
+ ($self->builtin_collection_actions, $self->collection_actions);
+ };
+
+ implements dm_name_from_class_name => as {
+ my($self, $class) = @_;
+ confess("wrong arguments") unless $class;
+ $class =~ s/::/_/g;
+ $class = "_" . lc($class) . "_store";
+ return $class;
+ };
+
+ implements dm_name_from_source_name => as {
+ my($self, $source) = @_;
+ confess("wrong arguments") unless $source;
+ $source =~ s/([a-z0-9])([A-Z])/${1}_${2}/g ;
+ $source = "_" . lc($source) . "_store";
+ return $source;
+ };
+
+ implements class_name_from_source_name => as {
+ my ($self, $model_class, $source_name) = @_;
+ confess("wrong arguments") unless $model_class && $source_name;
+ return join "::", $model_class, $source_name;
+ };
+
+ implements class_name_for_collection_of => as {
+ my ($self, $object_class) = @_;
+ confess("wrong arguments") unless $object_class;
+ return "${object_class}::Collection";
+ };
+
+ implements merge_hashes => as {
+ my($self, $left, $right) = @_;
+ return Catalyst::Utils::merge_hashes($left, $right);
+ };
+
+ implements parse_reflect_rules => as {
+ my ($self, $rules, $haystack) = @_;
+ confess('$rules must be an array reference') unless ref $rules eq 'ARRAY';
+ confess('$haystack must be an array reference') unless ref $haystack eq 'ARRAY';
+
+ my $needles = {};
+ my (@exclude, @include, $global_opts);
+ if(@$rules == 2 && $rules->[0] eq '-exclude'){
+ push(@exclude, (ref $rules->[1] eq 'ARRAY' ? @{$rules->[1]} : $rules->[1]));
+ } else {
+ for my $rule ( @$rules ){
+ if (ref $rule eq 'ARRAY' && $rule->[0] eq '-exclude'){
+ push(@exclude, (ref $rule->[1] eq 'ARRAY' ? @{$rule->[1]} : $rule->[1]));
+ } elsif( ref $rule eq 'HASH' ){
+ $global_opts = ref $global_opts eq 'HASH' ?
+ $self->merge_hashes($global_opts, $rule) : $rule;
+ } else {
+ push(@include, $rule);
+ }
+ }
+ }
+ my $check_exclude = sub{
+ for my $rule (@exclude){
+ return 1 if(ref $rule eq 'Regexp' ? $_[0] =~ /$rule/ : $_[0] eq $rule);
+ }
+ return;
+ };
+
+ @$haystack = grep { !$check_exclude->($_) } @$haystack;
+ $self->merge_reflect_rules(\@include, $needles, $haystack, $global_opts);
+ return $needles;
+ };
+
+ implements merge_reflect_rules => as {
+ my ($self, $rules, $needles, $haystack, $local_opts) = @_;
+ for my $rule ( @$rules ){
+ if(!ref $rule && ( grep {$rule eq $_} @$haystack ) ){
+ $needles->{$rule} = defined $needles->{$rule} ?
+ $self->merge_hashes($needles->{$rule}, $local_opts) : $local_opts;
+ } elsif( ref $rule eq 'Regexp' ){
+ for my $match ( grep { /$rule/ } @$haystack ){
+ $needles->{$match} = defined $needles->{$match} ?
+ $self->merge_hashes($needles->{$match}, $local_opts) : $local_opts;
+ }
+ } elsif( ref $rule eq 'ARRAY' ){
+ my $opts;
+ $opts = pop(@$rule) if @$rule > 1 and ref $rule->[$#$rule] eq 'HASH';
+ $opts = $self->merge_hashes($local_opts, $opts) if defined $local_opts;
+ $self->merge_reflect_rules($rule, $needles, $haystack, $opts);
+ }
+ }
+ };
+
+
+
+ has packages => (
+ isa => 'HashRef',
+ required => 1,
+ is => 'ro',
+ default => sub{ {} },
+ );
+
+ implements add_to_package => as {
+ my ($self, $package, $args) = @_;
+ my $orig = $self->packages->{$package} || {};
+ my $merged = $self->merge_hashes($orig,$args || {});
+ %$orig = %$merged; #don't break other refs that may be laying around
+ return $orig;
+ };
+
+ implements reflect_schema => as {
+ my ($self, %opts) = @_;
+ my $base = delete $opts{base} || Object;
+ my $model = delete $opts{model_class};
+ my $schema = delete $opts{schema_class};
+ my $dm_name = delete $opts{domain_model_name};
+ my $dm_args = delete $opts{domain_model_args} || {};
+ $dm_name ||= $self->dm_name_from_class_name($schema);
+
+ #load all necessary classes
+ confess("model_class and schema_class are required parameters")
+ unless($model && $schema);
+ Class::MOP::load_class( $schema );
+
+ my $package_opts = {name => $model, superclasses => $base };
+ my $package = $self->add_to_package($model, $package_opts);
+
+ # sources => undef, #default to qr/./
+ # sources => [], #default to nothing
+ # sources => qr//, #DWIM, treated as [qr//]
+ # sources => [{...}] #DWIM, treat as [qr/./, {...} ]
+ # sources => [[-exclude => ...]] #DWIM, treat as [qr/./, [-exclude => ...]]
+ my $haystack = [ $schema->sources ];
+
+ my $rules = delete $opts{sources};
+ if(!defined $rules){
+ $rules = [qr/./];
+ } elsif( ref $rules eq 'Regexp'){
+ $rules = [ $rules ];
+ } elsif( ref $rules eq 'ARRAY' && @$rules){
+ #don't add a qr/./ rule if we have at least one match rule
+ push(@$rules, qr/./) unless grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
+ || !ref $_ || ref $_ eq 'Regexp'} @$rules;
+ }
+
+ my $sources = $self->parse_reflect_rules($rules, $haystack);
+
+
+ my $domain_model = {is => 'rw', isa => $schema, required => 1, %$dm_args};
+ $self->add_to_package($model, {domain_models => {$dm_name => $domain_model}});
+
+ #push these to packages
+ for my $source_name (keys %$sources){
+ my $source_opts = $sources->{$source_name} || {};
+ $self->reflect_source(
+ source_name => $source_name,
+ parent_class => $model,
+ schema_class => $schema,
+ source_class => $schema->class($source_name),
+ parent_domain_model_name => $dm_name,
+ %$source_opts
+ );
+ }
+ };
+
+ implements _compute_source_options => as {
+ my ($self, %opts) = @_;
+ my $schema = delete $opts{schema_class};
+ my $source_name = delete $opts{source_name};
+ my $source_class = delete $opts{source_class};
+ my $parent = delete $opts{parent_class};
+ my $parent_dm = delete $opts{parent_domain_model_name};
+
+ #this is the part where I hate my life for promissing all sorts of DWIMery
+ confess("parent_class and source_name or source_class are required parameters")
+ unless($parent && ($source_name || $source_class));
+
+ OUTER: until( $schema && $source_name && $source_class && $parent_dm ){
+ if( $schema && !$source_name){
+ next OUTER if $source_name = $source_class->result_source_instance->source_name;
+ } elsif( $schema && !$source_class){
+ next OUTER if $source_class = eval { $schema->class($source_name) };
+ }
+
+ if($source_class && (!$schema || !$source_name)){
+ if(!$schema){
+ $schema = $source_class->result_source_instance->schema;
+ next OUTER if $schema && Class::MOP::load_class($schema);
+ }
+ if(!$source_name){
+ $source_name = $source_class->result_source_instance->source_name;
+ next OUTER if $source_name;
+ }
+ }
+
+ my $dms = $self->packages->{$parent}->{domain_models};
+ my @haystack = $parent_dm ? $dms->{$parent_dm} : keys %$dms;
+
+ #there's a lot of guessing going on, but it should work fine on most cases
+ INNER: for my $needle (@haystack){
+ my $isa = $dms->{$needle}->{isa};
+ #we really have to clean up this nastiness and find a way to bring TCs
+ #into the mix here. To do: ( &constraint_is_dbix_class_schema )
+ next INNER unless Class::MOP::load_class( $isa );
+ next INNER unless $isa->isa('DBIx::Class::Schema');
+ if(!$parent_dm && $schema && $isa eq $schema){
+ $parent_dm = $needle->name;
+ next OUTER;
+ }
+
+ if( $source_name ){
+ my $src_class = eval{ $isa->class($source_name) };
+ next INNER unless $src_class;
+ next INNER if($source_class && $source_class ne $src_class);
+ $schema = $isa;
+ $parent_dm = $needle->name;
+ $source_class = $src_class;
+ next OUTER;
+ }
+ }
+
+ #do we even need to go this far?
+ if( !$parent_dm && $schema ){
+ my $tentative = $self->dm_name_from_class_name($schema);
+ $parent_dm = $tentative if grep{$_ eq $tentative} @haystack;
+ }
+
+ confess("Could not determine options automatically from: schema " .
+ "'${schema}', source_name '${source_name}', source_class " .
+ "'${source_class}', parent_domain_model_name '${parent_dm}'");
+ }
+
+ return {
+ source_name => $source_name,
+ schema_class => $schema,
+ source_class => $source_class,
+ parent_class => $parent,
+ parent_domain_model_name => $parent_dm,
+ };
+ };
+
+ implements _class_to_attribute_name => as {
+ my ( $self, $str ) = @_;
+ confess("wrong arguments passed for _class_to_attribute_name") unless $str;
+ return join('_', map lc, split(/::|(?<=[a-z0-9])(?=[A-Z])/, $str))
+ };
+
+ implements add_source => as {
+ my ($self, %opts) = @_;
+
+ my $model = delete $opts{model_class};
+ my $reader = delete $opts{reader};
+ my $source = delete $opts{source_name};
+ my $dm_name = delete $opts{domain_model_name};
+ my $collection = delete $opts{collection_class};
+ my $name = delete $opts{attribute_name} || $source;
+
+ confess("model_class and source_name are required parameters")
+ unless $model && $source;
+
+ unless( $collection ){
+ my $object = $self->class_name_from_source_name($model, $source);
+ $collection = $self->class_name_for_collection_of($object);
+ }
+ unless( $reader ){
+ $reader = $source;
+ $reader =~ s/([a-z0-9])([A-Z])/${1}_${2}/g ;
+ $reader = $self->_class_to_attribute_name($reader) . "_collection";
+ }
+ unless( $dm_name ){
+ my $dms = $self->packages->{$model}->{domain_models};
+ my @haystack = keys %$dms;
+ #again, here i could use that constraint_is_dbix_class_schema thing
+ if( @haystack > 1 ){
+ @haystack =
+ grep { $dms->{$_}{isa}->isa('DBIx::Class::Schema') }
+ @haystack;
+ }
+ if(@haystack == 1){
+ $dm_name = $haystack[0];
+ } elsif(@haystack > 1){
+ confess("Failed to automatically determine domain_model_name. More than one " .
+ "possible match (".(join ", ", map{"'${_}'"} @haystack).")");
+ } else {
+ confess("Failed to automatically determine domain_model_name. No matches.");
+ }
+ }
+
+ my $default_sub = qq^ sub {
+ my \$self = \$_[0];
+ return $collection->new
+ (
+ _source_resultset => \$self->$dm_name->resultset('${source}'),
+ _parent => \$self,
+ );
+ };^ ;
+ my %attr_opts =
+ (
+ lazy => 1,
+ required => 1,
+ isa => $collection,
+ reader => $reader,
+ predicate => "has_" . $self->_class_to_attribute_name($name) ,
+ domain_model => $dm_name,
+ orig_attr_name => $source,
+ default => \$default_sub, #scalar ref means it's code
+ );
+
+ $self->add_to_package
+ ($model, {parameter_attributes => {$name => \%attr_opts}});
+ };
+
+ implements reflect_source => as {
+ my ($self, %opts) = @_;
+ my $collection = delete $opts{collection} || {};
+ %opts = %{ $self->merge_hashes(\%opts, $self->_compute_source_options(%opts)) };
+
+ my $object_name = $self->reflect_source_object(%opts);
+ my $collection_name = $self->reflect_source_collection
+ (
+ object_class => $object_name,
+ source_class => $opts{source_class},
+ %$collection,
+ );
+
+ $self->add_source(
+ model_class => $opts{parent_class},
+ source_name => $opts{source_name},
+ domain_model_name => $opts{parent_domain_model_name},
+ collection_class => $collection_name,
+ );
+ };
+
+ implements reflect_source_collection => as {
+ my ($self, %opts) = @_;
+ my $base = delete $opts{base} || ResultSet;
+ my $class = delete $opts{class};
+ my $object = delete $opts{object_class};
+ my $source = delete $opts{source_class};
+ my $action_rules = delete $opts{actions};
+
+ confess('object_class and source_class are required parameters')
+ unless $object && $source;
+ $class ||= $self->class_name_for_collection_of($object);
+
+
+ my $package = {
+ name => $class,
+ base => $base,
+ methods => {},
+ method_modifiers => [],
+ };
+ {
+ my $code = qq^sub { '${object}' }^;
+ $package->{methods}->{_build_member_type} = \ $code;
+ }
+
+ my %model_action_map;
+ {
+ my $all_actions = $self->_all_collection_actions;
+ my $action_haystack = [keys %$all_actions];
+ if(!defined $action_rules){
+ $action_rules = $self->default_collection_actions;
+ } elsif( (!ref $action_rules && $action_rules) || (ref $action_rules eq 'Regexp') ){
+ $action_rules = [ $action_rules ];
+ } elsif( ref $action_rules eq 'ARRAY' && @$action_rules){
+ #don't add a qr/./ rule if we have at least one match rule
+ push(@$action_rules, qr/./)
+ unless grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
+ || !ref $_ || ref $_ eq 'Regexp'} @$action_rules;
+ }
+
+ # XXX this is kind of a dirty hack to support custom actions that are not
+ # previously defined and still be able to use the parse_reflect_rules mechanism
+ my @custom_actions = grep {!exists $all_actions->{$_}}
+ map{ $_->[0] } grep {ref $_ eq 'ARRAY' && $_->[0] ne '-exclude'} @$action_rules;
+ push(@$action_haystack, @custom_actions);
+ my $actions = $self->parse_reflect_rules($action_rules, $action_haystack);
+ for my $action (keys %$actions){
+ my $action_opts = $self->merge_hashes
+ ($all_actions->{$action} || {}, $actions->{$action} || {});
+
+ #NOTE: If the name of the action is not specified in the prototype then use it's
+ #hash key as the name. I think this is sane beahvior, but I've actually been thinking
+ #of making Action prototypes their own separate objects
+ $self->reflect_source_action(
+ class => join('::', $object, 'Action', $action),
+ name => $action,
+ object_class => $object,
+ source_class => $source,
+ %$action_opts,
+ );
+
+ $model_action_map{$action} = '_source_resultset';
+ }
+ }
+ {
+ my $code = q^ sub {
+ my $orig = shift;
+ my $tm = $_[0]->_source_resultset;
+ ^;
+
+ while(my($act_name, $tm_meth) = each %model_action_map){
+ $code .= qq^ \$tm = \$_[0]->$tm_meth if \$_[1] eq '${act_name}';\n^;
+ }
+ $code .= q^ return { %{ $orig->(@_) }, target_model => $tm }; ^;
+ $code .= "\n }";
+ push(
+ @{ $package->{method_modifiers} },
+ {
+ type => 'around',
+ name => '_default_action_args_for',
+ code => \$code,
+ }
+ );
+ }
+ $self->add_to_package($class, $package);
+ return $class;
+ };
+
+ implements reflect_source_object => as {
+ my($self, %opts) = @_;
+ %opts = %{ $self->merge_hashes(\%opts, $self->_compute_source_options(%opts)) };
+
+ my $base = delete $opts{base} || Object;
+ my $class = delete $opts{class};
+ my $dm_name = delete $opts{domain_model_name};
+ my $dm_opts = delete $opts{domain_model_args} || {};
+
+ my $source_name = delete $opts{source_name};
+ my $schema = delete $opts{schema_class};
+ my $source_class = delete $opts{source_class};
+ my $parent = delete $opts{parent_class};
+ my $parent_dm = delete $opts{parent_domain_model_name};
+
+ my $action_rules = delete $opts{actions};
+ my $attr_rules = delete $opts{attributes};
+
+ $class ||= $self->class_name_from_source_name($parent, $source_name);
+
+ Class::MOP::load_class($parent);
+ Class::MOP::load_class($schema) if $schema;
+ Class::MOP::load_class($source_class);
+
+ my $package = {
+ name => $class,
+ base => $base,
+ methods => {},
+ method_modifiers => [],
+ domain_models => {},
+ };
+
+ #create the domain model
+ $dm_name ||= $self->dm_name_from_source_name($source_name);
+
+ $dm_opts->{isa} = $source_class;
+ $dm_opts->{is} ||= 'rw';
+ $dm_opts->{required} ||= 1;
+ $dm_opts->{handles} = {
+ __id => 'id',
+ __ident_condition => 'ident_condition',
+ };
+ $dm_opts->{handles}->{display_name} = 'display_name'
+ if $source_class->can('display_name');
+
+ $package->{domain_models}{$dm_name} = {%$dm_opts};
+ my $dm_reader = $dm_opts->{reader} || $dm_opts->{accessor} || $dm_name;
+
+ {
+ my $code = 'sub {
+ my $class = shift;
+ my ($src) = @_;
+ $src = $src->resolve if $src->isa("DBIx::Class::ResultSourceHandle");
+ $class->new("'.$dm_name.'", $src->result_class->inflate_result(@_));
+ }; ';
+ $package->{methods}->{inflate_result} = \$code;
+ }
+
+ {
+ # attributes => undef, #default to qr/./
+ # attributes => [], #default to nothing
+ # attributes => qr//, #DWIM, treated as [qr//]
+ # attributes => [{...}] #DWIM, treat as [qr/./, {...} ]
+ # attributes => [[-exclude => ...]] #DWIM, treat as [qr/./, [-exclude => ...]]
+ my $attr_haystack =
+ [ map { $_->name } $source_class->meta->compute_all_applicable_attributes ];
+
+ if(!defined $attr_rules){
+ $attr_rules = [qr/./];
+ } elsif( (!ref $attr_rules && $attr_rules) || (ref $attr_rules eq 'Regexp') ){
+ $attr_rules = [ $attr_rules ];
+ } elsif( ref $attr_rules eq 'ARRAY' && @$attr_rules){
+ #don't add a qr/./ rule if we have at least one match rule
+ push(@$attr_rules, qr/./) unless
+ grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
+ || !ref $_ || ref $_ eq 'Regexp'} @$attr_rules;
+ }
+
+ my $attributes = $self->parse_reflect_rules($attr_rules, $attr_haystack);
+ for my $attr_name (keys %$attributes){
+ $self->reflect_source_object_attribute(
+ class => $class,
+ source_class => $source_class,
+ parent_class => $parent,
+ attribute_name => $attr_name,
+ domain_model_name => $dm_name,
+ %{ $attributes->{$attr_name} || {}},
+ );
+ }
+ }
+
+ my %model_action_map;
+ {
+ my $all_actions = $self->_all_object_actions;
+ my $action_haystack = [keys %$all_actions];
+ if(!defined $action_rules){
+ $action_rules = $self->default_object_actions;
+ } elsif( (!ref $action_rules && $action_rules) || (ref $action_rules eq 'Regexp') ){
+ $action_rules = [ $action_rules ];
+ } elsif( ref $action_rules eq 'ARRAY' && @$action_rules){
+ #don't add a qr/./ rule if we have at least one match rule
+ push(@$action_rules, qr/./)
+ unless grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
+ || !ref $_ || ref $_ eq 'Regexp'} @$action_rules;
+ }
+
+ # XXX this is kind of a dirty hack to support custom actions that are not
+ # previously defined and still be able to use the parse_reflect_rules mechanism
+ my @custom_actions = grep {!exists $all_actions->{$_}} map{ $_->[0] }
+ grep {ref $_ eq 'ARRAY' && $_->[0] ne '-exclude'} @$action_rules;
+ push(@$action_haystack, @custom_actions);
+ my $actions = $self->parse_reflect_rules($action_rules, $action_haystack);
+ for my $action (keys %$actions){
+ my $action_opts = $self->merge_hashes
+ ($all_actions->{$action} || {}, $actions->{$action} || {});
+
+ #NOTE: If the name of the action is not specified in the prototype then use it's
+ #hash key as the name. I think this is sane beahvior, but I've actually been thinking
+ #of making Action prototypes their own separate objects
+ $self->reflect_source_action(
+ class => join('::', $class, 'Action', $action),
+ name => $action,
+ object_class => $class,
+ source_class => $source_class,
+ %$action_opts,
+ );
+ $model_action_map{$action} = $dm_reader;
+ }
+ }
+ {
+ my $code = qq^ sub {
+ my \$orig = shift;
+ my \$tm = \$_[0]->${dm_reader};
+ ^;
+
+ while(my($act_name, $tm_meth) = each %model_action_map){
+ $code .= qq^ \$tm = \$_[0]->${tm_meth} if \$_[1] eq '${act_name}';\n^;
+ }
+ $code .= q^ return { %{ $orig->(@_) }, target_model => $tm }; ^;
+ $code .= "\n }";
+ push(
+ @{ $package->{method_modifiers} },
+ {
+ type => 'around',
+ name => '_default_action_args_for',
+ code => \$code,
+ }
+ );
+ }
+ $self->add_to_package($class, $package);
+ return $class;
+ };
+
+ # needs class, attribute_name domain_model_name
+ implements reflect_source_object_attribute => as {
+ my ($self, %opts) = @_;
+ unless( $opts{attribute_name} && $opts{class} && $opts{parent_class}
+ && ( $opts{source_class} || $opts{domain_model_name} ) ){
+ confess( "Error: class, parent_class, attribute_name, and either " .
+ "domain_model_name or source_class are required parameters" );
+ }
+
+ my $attr_opts = $self->parameters_for_source_object_attribute(%opts);
+ $self->add_to_package
+ (
+ $opts{class},
+ { parameter_attributes => { $opts{attribute_name} => {%$attr_opts} } }
+ );
+ };
+
+ # needs class, attribute_name domain_model_name
+ implements parameters_for_source_object_attribute => as {
+ my ($self, %opts) = @_;
+
+ my $class = delete $opts{class};
+ my $attr_name = delete $opts{attribute_name};
+ my $dm_name = delete $opts{domain_model_name};
+ my $source_class = delete $opts{source_class};
+ my $parent_class = delete $opts{parent_class};
+ confess("parent_class is a required argument") unless $parent_class;
+ confess("source_class is a required argument") unless $source_class;
+ confess("domain_model_name is a required argument") unless $dm_name;
+
+ my $source = $source_class->result_source_instance;
+ my $from_attr = $source_class->meta->find_attribute_by_name($attr_name);
+
+ #default options. lazy build but no outsider method
+ my %attr_opts = ( is => 'ro', lazy => 1, required => 1,
+ clearer => "_clear_${attr_name}",
+ predicate => "has_${attr_name}",
+ domain_model => $dm_name,
+ orig_attr_name => $attr_name,
+ );
+
+ #m2m / has_many
+ my $constraint_is_ArrayRef =
+ $from_attr->type_constraint->name eq 'ArrayRef' ||
+ $from_attr->type_constraint->is_subtype_of('ArrayRef');
+
+ if( my $rel_info = $source->relationship_info($attr_name) ){
+ my $rel_accessor = $rel_info->{attrs}->{accessor};
+ my $rel_moniker = $rel_info->{class}->result_source_instance->source_name;
+
+ if($rel_accessor eq 'multi' && $constraint_is_ArrayRef) {
+ #has_many
+ my $sm = $self->class_name_from_source_name($parent_class, $rel_moniker);
+ #type constraint is a collection, and default builds it
+ my $isa = $attr_opts{isa} = $self->class_name_for_collection_of($sm);
+ my $code = qq^ sub {
+ my \$rs = shift->${dm_name}->related_resultset('${attr_name}');
+ return ${isa}->new(_source_resultset => \$rs);
+ }^;
+ $attr_opts{default} = \$code;
+ } elsif( $rel_accessor eq 'single') {
+ #belongs_to
+ #type constraint is the foreign IM object, default inflates it
+ my $isa = $attr_opts{isa} =
+ $self->class_name_from_source_name($parent_class, $rel_moniker);
+ my $code = qq^ sub {
+ shift->${dm_name}->find_related
+ (
+ '${attr_name}',
+ {},
+ { result_class => '${isa}' }
+ );
+ }^;
+ $attr_opts{default} = \$code;
+ }
+ } elsif( $constraint_is_ArrayRef && $attr_name =~ m/^(.*)_list$/ ) {
+ #m2m magic
+ my $mm_name = $1;
+ my $link_table = "links_to_${mm_name}_list";
+ my ($hm_source, $far_side);
+ eval { $hm_source = $source->related_source($link_table); }
+ || confess "Can't find ${link_table} has_many for ${mm_name}_list";
+ eval { $far_side = $hm_source->related_source($mm_name); }
+ || confess "Can't find ${mm_name} belongs_to on ".$hm_source->result_class
+ ." traversing many-many for ${mm_name}_list";
+
+ my $sm = $self->class_name_from_source_name($parent_class,$far_side->source_name);
+ my $isa = $attr_opts{isa} = $self->class_name_for_collection_of($sm);
+
+ #proper collections will remove the result_class uglyness.
+ my $code = qq^ sub {
+ my \$rs = shift->${dm_name}->related_resultset('${link_table}')
+ ->related_resultset('${mm_name}');
+ return ${isa}->new(_source_resultset => \$rs);
+ }^;
+ $attr_opts{default} = \$code;
+
+ } else {
+ #no rel
+ my $reader = $from_attr->get_read_method;
+ $attr_opts{isa} = $from_attr->_isa_metadata;
+ $attr_opts{default} = \ "sub{ shift->${dm_name}->${reader} }";
+ }
+ return \%attr_opts;
+ };
+
+
+ implements reflect_source_action => as{
+ my($self, %opts) = @_;
+ my $name = delete $opts{name};
+ my $class = delete $opts{class};
+ my $base = delete $opts{base} || Action;
+ my $object = delete $opts{object_class};
+ my $source = delete $opts{source_class};
+
+ confess("name, class, object_class and source_class are required arguments")
+ unless $class && $source && $name && $object;
+
+ my $attr_rules = delete $opts{attributes};
+ Class::MOP::load_class( $source );
+
+
+ #print STDERR "\n\t", ref $attr_rules eq 'ARRAY' ? @$attr_rules : $attr_rules,"\n";
+ # attributes => undef, #default to qr/./
+ # attributes => [], #default to nothing
+ # attributes => qr//, #DWIM, treated as [qr//]
+ # attributes => [{...}] #DWIM, treat as [qr/./, {...} ]
+ # attributes => [[-exclude => ...]] #DWIM, treat as [qr/./, [-exclude => ...]]
+ my $attr_haystack =
+ [ map { $_ } keys %{ $self->packages->{$object}->{parameter_attributes} }];
+ if(!defined $attr_rules){
+ $attr_rules = [qr/./];
+ } elsif( (!ref $attr_rules && $attr_rules) || (ref $attr_rules eq 'Regexp') ){
+ $attr_rules = [ $attr_rules ];
+ } elsif( ref $attr_rules eq 'ARRAY' && @$attr_rules){
+ #don't add a qr/./ rule if we have at least one match rule
+ push(@$attr_rules, qr/./) unless
+ grep {(ref $_ eq 'ARRAY' && $_->[0] ne '-exclude')
+ || !ref $_ || ref $_ eq 'Regexp'} @$attr_rules;
+ }
+
+ #print STDERR "${name}\t${class}\t${base}\n";
+ #print STDERR "\t${object}\t${source}\n";
+ #print STDERR "\t",@$attr_rules,"\n";
+
+ my $s_meta = $source->meta;
+ my $attributes = $self->parse_reflect_rules($attr_rules, $attr_haystack);
+
+ #create the class
+ my $package = {
+ name => $class,
+ superclasses => $base,
+ parameter_attributes => {},
+ };
+
+ my $parent_package = $self->packages->{$object};
+
+ for my $attr_name (keys %$attributes){
+ my $attr_opts = $attributes->{$attr_name} || {};
+ my $s_attr_name = $parent_package->{parameter_attributes}
+ ->{$attr_name}->{orig_attribute_name} || $attr_name;
+ my $s_attr = $s_meta->find_attribute_by_name($s_attr_name);
+ confess("Unable to find attribute for '${s_attr_name}' via '${source}'")
+ unless defined $s_attr;
+ next unless $s_attr->get_write_method
+ && $s_attr->get_write_method !~ /^_/; #only rw attributes!
+
+ my $attr_params = $self->parameters_for_source_object_action_attribute
+ (
+ object_class => $object,
+ source_class => $source,
+ attribute_name => $attr_name
+ );
+ $package->{parameter_attributes}->{$attr_name} = { %$attr_params };
+ }
+ };
+
+ implements parameters_for_source_object_action_attribute => as {
+ my ($self, %opts) = @_;
+
+ my $object = delete $opts{object_class};
+ my $attr_name = delete $opts{attribute_name};
+ my $source_class = delete $opts{source_class};
+ confess("object_class, $source_class and attribute_name are required parameters")
+ unless $attr_name && $object && $source_class;
+
+ my $from_attr = $source_class->meta->find_attribute_by_name($attr_name);
+
+ confess("${attr_name} is not writeable and can not be reflected")
+ unless $from_attr->get_write_method;
+
+ my %attr_opts = (
+ is => 'rw',
+ isa => $from_attr->_isa_metadata,
+ required => $from_attr->is_required,
+ ($from_attr->is_required
+ ? () : (clearer => "clear_${attr_name}")),
+ predicate => "has_${attr_name}",
+ );
+
+ if ($attr_opts{required}) {
+ if($from_attr->has_default) {
+ $attr_opts{lazy} = 1;
+ $attr_opts{default} = $from_attr->default;
+ } else {
+ $attr_opts{lazy_fail} = 1;
+ }
+ }
+
+ #test for relationships
+ my $constraint_is_ArrayRef =
+ $from_attr->type_constraint->name eq 'ArrayRef' ||
+ $from_attr->type_constraint->is_subtype_of('ArrayRef');
+
+ my $source = $source_class->result_source_instance;
+ if (my $rel_info = $source->relationship_info($attr_name)) {
+ my $rel_accessor = $rel_info->{attrs}->{accessor};
+
+ if($rel_accessor eq 'multi' && $constraint_is_ArrayRef) {
+ confess "${attr_name} is a rw has_many, this won't work.";
+ } elsif( $rel_accessor eq 'single') {
+ my $code = qq^ sub {
+ shift->target_model->result_source
+ ->related_source('${attr_name}')->resultset;
+ } ^;
+ $attr_opts{valid_values} = \ $code;
+ }
+ } elsif ( $constraint_is_ArrayRef && $attr_name =~ m/^(.*)_list$/) {
+ my $mm_name = $1;
+ my $link_table = "links_to_${mm_name}_list";
+ my ($hm_source, $far_side);
+ eval { $hm_source = $source->related_source($link_table); }
+ || confess "Can't find ${link_table} has_many for ${mm_name}_list";
+ eval { $far_side = $hm_source->related_source($mm_name); }
+ || confess "Can't find ${mm_name} belongs_to on ".$hm_source->result_class
+ ." traversing many-many for ${mm_name}_list";
+
+ $attr_opts{default} = \ "sub { [] }";
+ my $code = qq^sub {
+ shift->target_model->result_source->related_source('${link_table}')
+ ->related_source('${mm_name}')->resultset;
+ } ^;
+ }
+
+ return \%attr_opts;
+ };
+
+};
+
+1;
projects / catagits/Reaction.git / commitdiff