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openSUSE:Backports:SLE-15-SP6
perl-Mojo-SQLite
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<package name="perl-Mojo-SQLite" project="openSUSE:Backports:SLE-15-SP6"> <title>Tiny Mojolicious Wrapper for Sqlite</title> <description> Mojo::SQLite is a tiny wrapper around DBD::SQLite that makes at https://www.sqlite.org/ a lot of fun to use with the at https://mojolico.us real-time web framework. Database and statement handles are cached automatically, so they can be reused transparently to increase performance. And you can handle connection timeouts gracefully by holding on to them only for short amounts of time. use Mojolicious::Lite; use Mojo::SQLite; helper sqlite => sub { state $sql = Mojo::SQLite->new('sqlite:sqlite.db') }; get '/' => sub { my $c = shift; my $db = $c->sqlite->db; $c->render(json => $db->query('select datetime("now","localtime") as now')->hash); }; app->start; All I/O and queries are performed synchronously. However, the "Write-Ahead Log" journal is enabled for all connections, allowing multiple processes to read and write concurrently to the same database file (but only one can write at a time). See http://sqlite.org/wal.html for more information. # Performed concurrently my $pid = fork || die $!; say $sql->db->query('select datetime("now","localtime") as time')->hash->{time}; exit unless $pid; All cached database handles will be reset automatically if a new process has been forked, this allows multiple processes to share the same Mojo::SQLite object safely. Any database errors will throw an exception as 'RaiseError' is automatically enabled, so use 'eval' or Try::Tiny to catch them. This makes transactions with Mojo::SQLite::Database/"begin" easy. While passing a file path of ':memory:' (or a custom "dsn" with 'mode=memory') will create a temporary database, in-memory databases cannot be shared between connections, so subsequent calls to "db" may return connections to completely different databases. For a temporary database that can be shared between connections and processes, pass a file path of ':temp:' to store the database in a temporary directory (this is the default), or consider constructing a temporary directory yourself with File::Temp if you need to reuse the filename. A temporary directory allows SQLite to create at https://www.sqlite.org/tempfiles.html safely. use File::Spec::Functions 'catfile'; use File::Temp; use Mojo::SQLite; my $tempdir = File::Temp->newdir; # Deleted when object goes out of scope my $tempfile = catfile $tempdir, 'sqlite.db'; my $sql = Mojo::SQLite->new->from_filename($tempfile); </description> </package>
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