/ 
DBIx-Class-Async-0.55
/ DBIx::Class::Async::Row

NAME

DBIx::Class::Async::Row - Asynchronous Row object representing a single database record.

VERSION

Version 0.55

SYNOPSIS

# Rows are typically retrieved via a ResultSet
my $future = $rs->find(1);

$future->on_done(sub {
    my $user = shift;

    # Access columns (non-blocking if pre-inflated)
    say $user->username;

    # Update columns
    $user->last_login('2026-02-02');

    # Persist changes asynchronously
    $user->update->on_done(sub {
        say "User updated!";
    });

    # Traverse relationships (Returns a Future)
    $user->posts->all->on_done(sub {
        my $posts = shift;
        say "User has " . scalar(@$posts) . " posts.";
    });
});

DESCRIPTION

This class provides an asynchronous interface to individual database rows. It maintains internal state regarding "dirty" (unsaved) columns and handles the hand-off to the background worker for all I/O operations.

ATTRIBUTES

in_storage

my $bool = $row->in_storage;
$row->in_storage(1);

Returns or sets whether the row is considered "in the database." Setting this to true clears the "dirty" status of all columns.

PERSISTENCE METHODS

update

$row->update({ status => 'active' })->then(sub { ... });

If the row is in storage, dispatches an UPDATE command to the worker for any modified (dirty) columns. Returns a Future resolving to the updated row object.

delete

$row->delete->on_done(sub { say "Gone!" });

Asynchronously deletes the row from the database using its Primary Key. Upon success, in_storage is set to 0.

discard_changes

$row->discard_changes->then(sub { ... });

Re-fetches the row data from the database, overwriting any local unsaved changes and resetting the "dirty" flag.

copy

$row->copy({ username => 'new_user' })->then(sub { ... });

Creates a new record in the database using the current row's data as a template, excluding Primary Keys unless explicitly provided in the changes hashref.

DATA ACCESSORS

get_column / set_column

my $val = $row->get_column('email');
$row->set_column('email', 'new@example.com');

Standard DBIC-style column accessors. set_column marks the column as "dirty."

get_dirty_columns

my %dirty = $row->get_dirty_columns;

Returns a list of key-value pairs for columns that have been modified but not yet saved to the database.

RELATIONSHIPS

my $rel_rs = $row->related_resultset('posts');

Returns a DBIx::Class::Async::ResultSet for the named relationship, pre-configured with the foreign key join condition.

$row->create_related('posts', { title => 'New Post' });

Shorthand for $row->related_resultset($rel)->create($data).

DESTROY

# Called automatically when object is destroyed

Destructor method.

INTERNAL METHODS

These methods are for internal use and are documented for completeness.

_build_relationship_accessor

my $coderef = $row->_build_relationship_accessor($method, $rel_info);

Builds an accessor for a relationship that checks for prefetched data first, then falls back to lazy loading if needed. For has_many relationships, the ResultSet object is cached in the row.

_ensure_accessors

$row->_ensure_accessors;

Creates accessor methods for all columns in the result source.

_extract_foreign_key

Extracts foreign key mapping from a relationship condition.

_get_primary_key_info

my $pk_info = $row->_get_primary_key_info;

Returns information about the primary key(s) for this row.

Returns

Hash reference with keys:

- columns: Array reference of primary key column names

- count: Number of primary key columns

- is_composite: Boolean indicating composite primary key

_get_source

my $source = $row->_get_source;

Returns the result source for this row, loading it lazily if needed.

PERFORMANCE OPTIMISATIONS

  • Shadow Keys

    For performance, non-inflated columns are shadowed directly onto the object hash, allowing for fast access without method calls.

  • Inflation Map

    The object maintains an internal _inflation_map to avoid repeated metadata lookups against the ResultSource.

  • Warm-up

    The constructor pre-calculates metadata to ensure the first data access is as fast as subsequent ones.

AUTHOR

Mohammad Sajid Anwar, <mohammad.anwar at yahoo.com>

REPOSITORY

https://github.com/manwar/DBIx-Class-Async

BUGS

Please report any bugs or feature requests through the web interface at https://github.com/manwar/DBIx-Class-Async/issues. I will be notified and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

perldoc DBIx::Class::Async::Row

You can also look for information at:

LICENSE AND COPYRIGHT

Copyright (C) 2026 Mohammad Sajid Anwar.

This program is free software; you can redistribute it and / or modify it under the terms of the the Artistic License (2.0). You may obtain a copy of the full license at: http://www.perlfoundation.org/artistic_license_2_0 Any use, modification, and distribution of the Standard or Modified Versions is governed by this Artistic License.By using, modifying or distributing the Package, you accept this license. Do not use, modify, or distribute the Package, if you do not accept this license. If your Modified Version has been derived from a Modified Version made by someone other than you,you are nevertheless required to ensure that your Modified Version complies with the requirements of this license. This license does not grant you the right to use any trademark, service mark, tradename, or logo of the Copyright Holder. This license includes the non-exclusive, worldwide, free-of-charge patent license to make, have made, use, offer to sell, sell, import and otherwise transfer the Package with respect to any patent claims licensable by the Copyright Holder that are necessarily infringed by the Package. If you institute patent litigation (including a cross-claim or counterclaim) against any party alleging that the Package constitutes direct or contributory patent infringement,then this Artistic License to you shall terminate on the date that such litigation is filed. Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW. UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.