DBIx-NoSQL-Store-Manager

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lib/DBIx/NoSQL/Store/Manager/StoreModel.pm  view on Meta::CPAN

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use experimental 'signatures';
 
has store_model => (
    is => 'ro',
    isa => 'Str',
    required => 1,
    predicate => 'has_store_model',
);
 
has cascade_model => (
    is      => 'ro',
    isa     => 'Bool',
    default => sub { 0 },
);
 
has cascade_save => (
    is      => 'ro',
    isa     => 'Bool',
    lazy => 1,
    default => sub { $_[0]->cascade_model },
);
 
has cascade_delete => (
    is      => 'ro',
    isa     => 'Bool',
    lazy => 1,
    default => sub { $_[0]->cascade_model },
);
 
use Types::Standard qw/ InstanceOf Str HashRef ArrayRef ConsumerOf /;
 
before _process_options => sub ( $meta, $name, $options ) {
    my $type = InstanceOf[ $options->{store_model } ] | Str | HashRef;
    if ( grep { $_ eq 'Moose::Meta::Attribute::Native::Trait::Array' } @{ $options->{traits} || [] } ) {
        $type = 'ArrayRef';
    }
    $options->{isa} ||= $type;

lib/DBIx/NoSQL/Store/Manager/StoreModel.pm  view on Meta::CPAN

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my $array_context = grep { $_ eq 'Moose::Meta::Attribute::Native::Trait::Array'  } @{ $attr->applied_traits };
 
my $reader = $attr->get_read_method;
# class that has the attribute
my $main_class = $attr->associated_class;
 
$main_class->add_before_method_modifier( delete => sub ( $self, @) {
    my $obj = $self->$reader or return;
 
    $_->delete for $array_context ? @$obj : $obj;
}) if $attr->cascade_delete;
 
$main_class->add_before_method_modifier( $attr->get_read_method => sub ( $self, @rest ) {
    return if @rest;
 
    my $value = $attr->get_value( $self );
    return unless grep { defined $_ and not blessed $_ } $array_context ? @$value : $value;
 
    if( $array_context ) {
        $attr->set_raw_value( $self, [ map {
                $attr->_expand_to_object( $_, $self ) } @$value ] );

lib/DBIx/NoSQL/Store/Manager/StoreModel.pm  view on Meta::CPAN

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        my $packed = $orig->($self);
        my $val = $self->$reader;
        if ( $val ) {
            $packed->{ $attr->name } = $array_context ? [ 
                map { $_->store_key } @$val
            ] : $val->store_key;
        }
        return $packed;
} );
 
if( $attr->cascade_save ) {
    $main_class->add_before_method_modifier( 'save' => sub ( $self, $store=undef ) {
            # TODO bug if we remove the value altogether
            my $value = $self->$reader or return;
             
            if ( $attr->cascade_delete ) {
                my $priors = eval { $self->store_db->get( $self->store_model, $self->store_key )->$reader };
 
                if ( $array_context ) {
                    my %priors = map { $_->store_key => $_ } @$priors;
                    for ( @$value ) {
                        delete $priors{ $_->store_key };
                    }
                    $_->delete for values %priors;
                }
                else {

lib/DBIx/NoSQL/Store/Manager/StoreModel.pm  view on Meta::CPAN

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version 1.0.0
 
=head1 SYNOPSIS
 
    package Blog::Model::Entry;
 
    has author => (
        traits => [ 'StoreModel' ],
        store_model =>  'Blog::Model::Author',
        cascade_save => 1,
        cascade_delete => 0,
        is => 'rw',
    );
 
=head1 DESCRIPTION
 
I<DBIx::NoSQL::Store::Manager::StoreModel> (also aliased to I<StoreModel>)
 
This trait ties the value of the attribute to a model of the store.
 
The value of the attribute can be set via either a model object, a hashref, or 

lib/DBIx/NoSQL/Store/Manager/StoreModel.pm  view on Meta::CPAN

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a collection of objects. The same logic applies as above, only wrapped in an arrayref.
 
=head1 ATTRIBUTES
 
=head2 store_model => $model_class
 
Required. Takes in the model associated with the target attribute.
Will automatically populate the C<isa> attribute to 
C<$model_class|Str_HashRef>.
 
=head2 cascade_model => $boolean
 
Sets the default of C<cascade_save> and C<cascade_delete>.
Defaults to C<false>.
 
=head2 cascade_save => $boolean
 
If C<true> the object associated with the attribute is automatically saved 
to the store when the main object is C<save()>d.
 
=head2 cascade_delete => $boolean
 
If C<true>, deletes the attribute object (if there is any)
from the store when the main object is C<delete()>d.
 
If both C<cascade_delete> and C<cascade_save> are C<true>,
then when saving the main object, if the attribute object has been
modified, its previous value will be deleted from the store.
 
    # assuming the author attribute has `cascade_model => 1`...
 
    my $blog_entry = $store->create( 'Entry', 
        author => Blog::Model::Author->new( 
            name => 'yanick',
            bio  => 'necrohacker',
        ),
    );
 
    # store now has yanick as an author

t/lib/Blog/Model/Entry2.pm  view on Meta::CPAN

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with 'https://metacpan.org/pod/DBIx::NoSQL::Store::Manager::Model">DBIx::NoSQL::Store::Manager::Model';
 
has url => (
    traits   => [ 'StoreKey' ],
    is       => 'ro',
    required => 1,
);
 
has author => (
    traits => [ 'StoreModel' ],
    cascade_model => 1,
    store_model => 'Blog::Model::Author',
    is     => 'rw',
);
 
has tags => (
    traits => [ 'Array', 'StoreModel' ],
    cascade_save => 1,
    store_model => 'Blog::Model::Tag',
    is     => 'ro',
    default => sub { [] },
);
 
__PACKAGE__->meta->make_immutable;
 
1;

t/model-attribute.t  view on Meta::CPAN

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cmp_deeply $entry->pack => superhashof({
    __CLASS__ => 'Blog::Model::Entry',
    url       => '/first',
    author    => 'yanick',
});
 
is $store->create( 'Entry', url => '/first', author => 'yanick' )->author->bio
    => 'necrohacker', 'expansion happens';
 
 
subtest 'cascade_save' => sub {
    $store->create( Entry => (
        url => '/second', author => Blog::Model::Author->new(
            name => 'bob',
        ),
    ));
 
    ok !$store->get( 'Author' => 'bob' ), "author is not auto-saved";
     
    $store->create( Entry2 => (
        url => '/second', author => Blog::Model::Author->new(
            name => 'bob',
        ),
    ));
 
    ok $store->get( 'Author' => 'bob' ), "author is auto-saved";
 
};
 
 
subtest 'cascade_delete' => sub {
    my $author = $store->create( Author => ( name => 'charles', bio => 'foo' ) );
 
    my $entry = $store->create( Entry => (
        url => '/third', author => $author
    )  );
 
    ok $store->get( 'Entry' => '/third' ), "entry is there";
 
    $entry->delete;