Patrick Hochstenbach
and 3 contributors

NAME

Catmandu::Store::File::Memory::Index - Index of all "Folders" in a Catmandu::Store::File::Memory

SYNOPSIS

    use Catmandu;

    my $store = Catmandu->store('File::Memory');

    my $index = $store->index;

    # List all containers
    $index->each(sub {
        my $container = shift;

        print "%s\n" , $container->{_id};
    });

    # Add a new folder
    $index->add({_id => '1234'});

    # Delete a folder
    $index->delete(1234);

    # Get a folder
    my $folder = $index->get(1234);

    # Get the files in an folder
    my $files = $index->files(1234);

    $files->each(sub {
        my $file = shift;

        my $name         = $file->_id;
        my $size         = $file->size;
        my $content_type = $file->content_type;
        my $created      = $file->created;
        my $modified     = $file->modified;

        $file->stream(IO::File->new(">/tmp/$name"), file);
    });

    # Add a file
    $files->upload(IO::File->new("<data.dat"),"data.dat");

    # Retrieve a file
    my $file = $files->get("data.dat");

    # Stream a file to an IO::Handle
    $files->stream(IO::File->new(">data.dat"),$file);

    # Delete a file
    $files->delete("data.dat");

    # Delete a folders
    $index->delete("1234");

DESCRIPTION

A Catmandu::Store::File::Memory::Index contains all "folders" available in a Catmandu::Store::File::Memory FileStore. All methods of Catmandu::Bag, Catmandu::FileBag::Index and Catmandu::Droppable are implemented.

Every Catmandu::Bag is also an Catmandu::Iterable.

FOLDERS All files in a Catmandu::Store::File::Memory are organized in "folders". To add a "folder" a new record needs to be added to the Catmandu::Store::File::Memory::Index :

    $index->add({_id => '1234'});

The _id field is the only metadata available in Memory stores. To add more metadata fields to a Memory store a Catmandu::Plugin::SideCar is required.

FILES

Files can be accessed via the "folder" identifier:

    my $files = $index->files('1234');

Use the upload method to add new files to a "folder". Use the download method to retrieve files from a "folder".

    $files->upload(IO::File->new("</tmp/data.txt"),'data.txt');

    my $file = $files->get('data.txt');

    $files->download(IO::File->new(">/tmp/data.txt"),$file);

INHERITED METHODS

This Catmandu::Bag implements:

Catmandu::Bag
Catmandu::FileBag::Index
Catmandu::Droppable