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net::dbus::error(3pm) [debian man page]

Net::DBus::Error(3pm)					User Contributed Perl Documentation				     Net::DBus::Error(3pm)

NAME
Net::DBus::Error - Error details for remote method invocation SYNOPSIS
package Music::Player::UnknownFormat; use base qw(Net::DBus::Error); # Define an error type for unknown track encoding type # for a music player service sub new { my $proto = shift; my $class = ref($proto) || $proto; my $self = $class->SUPER::new(name => "org.example.music.UnknownFormat", message => "Unknown track encoding format"); } package Music::Player::Engine; ...snip... # Play either mp3 or ogg music tracks, otherwise # thrown an error sub play { my $self = shift; my $url = shift; if ($url =~ /.(mp3|ogg)$/) { ...play the track } else { die Music::Player::UnknownFormat->new(); } } DESCRIPTION
This objects provides for strongly typed error handling. Normally a service would simply call die "some message text" When returning the error condition to the calling DBus client, the message is associated with a generic error code or "org.freedesktop.DBus.Failed". While this suffices for many applications, occasionally it is desirable to be able to catch and handle specific error conditions. For such scenarios the service should create subclasses of the "Net::DBus::Error" object providing in a custom error name. This error name is then sent back to the client instead of the genreic "org.freedesktop.DBus.Failed" code. METHODS
my $error = Net::DBus::Error->new(name => $error_name, message => $description); Creates a new error object whose name is given by the "name" parameter, and long descriptive text is provided by the "message" parameter. The "name" parameter has certain formatting rules which must be adhered to. It must only contain the letters 'a'-'Z', '0'-'9', '-', '_' and '.'. There must be at least two components separated by a '.', For example a valid name is 'org.example.Music.UnknownFormat'. $error->name Returns the DBus error name associated with the object. $error->message Returns the descriptive text/message associated with the error condition. $error->stringify Formats the error as a string in a manner suitable for printing out / logging / displaying to the user, etc. AUTHOR
Daniel P. Berrange COPYRIGHT
Copyright (C) 2005-2011 Daniel P. Berrange SEE ALSO
Net::DBus, Net::DBus::Object perl v5.14.2 2011-06-30 Net::DBus::Error(3pm)

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Net::DBus::Binding::Bus(3pm)				User Contributed Perl Documentation			      Net::DBus::Binding::Bus(3pm)

NAME
Net::DBus::Binding::Bus - Handle to a well-known message bus instance SYNOPSIS
use Net::DBus::Binding::Bus; # Get a handle to the system bus my $bus = Net::DBus::Binding::Bus->new(type => &Net::DBus::Binding::Bus::SYSTEM); DESCRIPTION
This is a specialization of the Net::DBus::Binding::Connection module providing convenience constructor for connecting to one of the well- known bus types. There is no reason to use this module directly, instead get a handle to the bus with the "session" or "system" methods in Net::DBus. METHODS
my $bus = Net::DBus::Binding::Bus->new(type => $type); my $bus = Net::DBus::Binding::Bus->new(address => $addr); Open a connection to a message bus, either a well known bus type specified using the "type" parameter, or an arbitrary bus specified using the "address" parameter. If the "private" parameter is set to a true value, then a private connection to the bus is obtained. The caller must explicitly disconnect this bus instance before releasing the last instance of the object. $bus->request_name($service_name) Send a request to the bus registering the well known name specified in the $service_name parameter. If another client already owns the name, registration will be queued up, pending the exit of the other client. my $name = $bus->get_unique_name Returns the unique name by which this processes' connection to the bus is known. Unique names are never re-used for the entire lifetime of the bus daemon. $bus->add_match($rule) Register a signal match rule with the bus controller, allowing matching broadcast signals to routed to this client. $bus->remove_match($rule) Unregister a signal match rule with the bus controller, preventing further broadcast signals being routed to this client AUTHOR
Daniel P. Berrange COPYRIGHT
Copyright (C) 2004-2011 Daniel P. Berrange SEE ALSO
Net::DBus::Binding::Connection, Net::DBus perl v5.14.2 2011-06-30 Net::DBus::Binding::Bus(3pm)
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