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.\" ========================================================================
.\"
.IX Title "Catmandu::Bag 3pm"
.TH Catmandu::Bag 3pm "2014-10-14" "perl v5.20.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH "NAME"
Catmandu::Bag \- A Catmandu::Store compartment to persist data
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    my $store = Catmandu::Store::DBI\->new(data_source => \*(AqDBI:mysql:database=test\*(Aq);
\&
\&    my $store = Catmandu::Store::DBI\->new(
\&            data_source => \*(AqDBI:mysql:database=test\*(Aq,
\&            bags => { data => { fixes => [ ... ] } },
\&            bag_class => Catmandu::Bag\->with_plugins(\*(AqDatestamps\*(Aq)
\&            );
\&
\&    # Use the default bag...
\&    my $bag = $store\->bag;
\&
\&    # Or a named bag...
\&    my $bag = $store\->bag(\*(Aqjournals\*(Aq);
\&
\&    # Every bag is an iterator...
\&    $bag\->each(sub { ... });
\&    $bag\->take(10)\->each(sub { ... });
\&
\&    $bag\->add($hash);
\&    $bag\->add_many($iterator);
\&    $bag\->add_many([ $hash, $hash , ...]);
\&
\&    # Commit changes...
\&    $bag\->commit;
\&
\&    my $obj = $bag\->get($id);
\&    $bag\->delete($id);
\&
\&    $bag\->delete_all;
.Ve
.SH "METHODS"
.IX Header "METHODS"
.SS "new(fixes => [...])"
.IX Subsection "new(fixes => [...])"
Create a new Bag with optionally an array of fixes for each item.
.SS "add($hash)"
.IX Subsection "add($hash)"
Add one hash to the store or updates an existing hash by using its '_id' key. Returns
the stored hash on success or undef on failure.
.SS "add_many($array)"
.IX Subsection "add_many($array)"
.SS "add_many($iterator)"
.IX Subsection "add_many($iterator)"
Add or update one or more items to the store.
.SS "get($id)"
.IX Subsection "get($id)"
Retrieves the item with identifier \f(CW$id\fR from the store.
.SS "delete($id)"
.IX Subsection "delete($id)"
Deletes the item with identifier \f(CW$id\fR from the store.
.SS "delete_all"
.IX Subsection "delete_all"
Deletes all items from the store.
.SS "commit"
.IX Subsection "commit"
Commit changes.
.SS "log"
.IX Subsection "log"
Return the current logger.
.SH "CLASS METHODS"
.IX Header "CLASS METHODS"
.SS "with_plugins($plugin)"
.IX Subsection "with_plugins($plugin)"
.SS "with_plugins(\e@plugins)"
.IX Subsection "with_plugins(@plugins)"
Plugins are a kind of fixes that should be available for each bag. E.g. the Datestamps plugin will
automatically store into each bag item the fields 'date_updated' and 'date_created'. The with_plugins
accept one or an array of plugin classnames and returns a subclass of the Bag with the plugin
methods implemented.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Catmandu::Iterable, Catmandu::Searchable, Catmandu::Fix, Catmandu::Pluggable