NAME

       Net::DBus::Binding::Introspector - Handler for object introspection data

SYNOPSIS

         # Create an object populating with info from an
         # XML doc containing introspection data.

         my $ins = Net::DBus::Binding::Introspector->new(xml => $data);

         # Create an object, defining introspection data
         # programmatically
         my $ins = Net::DBus::Binding::Introspector->new(object_path => $object->get_object_path);
         $ins->add_method("DoSomething", ["string"], [], "org.example.MyObject");
         $ins->add_method("TestSomething", ["int32"], [], "org.example.MyObject");

DESCRIPTION

       This class is responsible for managing introspection data, and answering questions about it. This is not
       intended for use by application developers, whom should instead consult the higher level API in
       Net::DBus::Exporter.

METHODS

       my $ins = Net::DBus::Binding::Introspector->new(object_path => $object_path, xml => $xml);
           Creates a new introspection data manager for the object registered at the path specified for the
           "object_path" parameter. The optional "xml" parameter can be used to pre-load the manager with
           introspection metadata from an XML document.

       $ins->add_interface($name)
           Register the object as providing an interface with the name $name

       my $bool = $ins->has_interface($name)
           Return a true value if the object is registered as providing an interface with the name $name;
           returns false otherwise.

       my @interfaces = $ins->has_method($name, [$interface])
           Return a list of all interfaces provided by the object, which contain a method called $name. This may
           be an empty list.  The optional $interface parameter can restrict the check to just that one
           interface.

       my $boolean = $ins->is_method_allowed($name[, $interface])
           Checks according to whether the remote caller is allowed to invoke the method $name on the object
           associated with this introspector.  If this object has 'strict exports' enabled, then only explicitly
           exported methods will be allowed. The optional $interface parameter can restrict the check to just
           that one interface. Returns a non-zero value if the method should be allowed.

       my @interfaces = $ins->has_signal($name)
           Return a list of all interfaces provided by the object, which contain a signal called $name. This may
           be an empty list.

       my @interfaces = $ins->has_property($name)
           Return a list of all interfaces provided by the object, which contain a property called $name. This
           may be an empty list.  The optional $interface parameter can restrict the check to just that one
           interface.

       $ins->add_method($name, $params, $returns, $interface, $attributes, $paramnames, $returnnames);
           Register the object as providing a method called $name accepting parameters whose types are declared
           by $params and returning values whose type are declared by $returns. The method will be scoped to the
           interface named by $interface. The $attributes parameter is a hash reference for annotating the
           method. The $paramnames and $returnames parameters are a list of argument and return value names.

       $ins->add_signal($name, $params, $interface, $attributes);
           Register the object as providing a signal called $name with parameters whose types are declared by
           $params. The signal will be scoped to the interface named by $interface. The $attributes parameter is
           a hash reference for annotating the signal.

       $ins->add_property($name, $type, $access, $interface, $attributes);
           Register the object as providing a property called $name with a type of $type. The $access parameter
           can be one of "read", "write", or "readwrite". The property will be scoped to the interface named by
           $interface. The $attributes parameter is a hash reference for annotating the signal.

       my $boolean = $ins->is_method_deprecated($name, $interface)
           Returns a true value if the method called $name in the interface $interface is marked as deprecated

       my $boolean = $ins->is_signal_deprecated($name, $interface)
           Returns a true value if the signal called $name in the interface $interface is marked as deprecated

       my $boolean = $ins->is_property_deprecated($name, $interface)
           Returns a true value if the property called $name in the interface $interface is marked as deprecated

       my $boolean = $ins->does_method_reply($name, $interface)
           Returns a true value if the method called $name in the interface $interface will generate a reply.
           Returns a false value otherwise.

       my $boolean = $ins->method_has_strict_exceptions($name, $interface)
           Returns true if the method called $name in the interface $interface has the strict_exceptions
           attribute; that is any exceptions which aren't Net::DBus::Error objects should not be caught and
           allowed to travel up the stack.

       my @names = $ins->list_interfaces
           Returns a list of all interfaces registered as being provided by the object.

       my @names = $ins->list_methods($interface)
           Returns a list of all methods registered as being provided by the object, within the interface
           $interface.

       my @names = $ins->list_signals($interface)
           Returns a list of all signals registered as being provided by the object, within the interface
           $interface.

       my @names = $ins->list_properties($interface)
           Returns a list of all properties registered as being provided by the object, within the interface
           $interface.

       my @paths = $self->list_children;
           Returns a list of object paths representing all the children of this node.

       my $path = $ins->get_object_path
           Returns the path of the object associated with this introspection data

       my @types = $ins->get_method_params($interface, $name)
           Returns a list of declared data types for parameters of the method called $name within the interface
           $interface.

       my @types = $ins->get_method_param_names($interface, $name)
           Returns a list of declared names for parameters of the method called $name within the interface
           $interface.

       my @types = $ins->get_method_returns($interface, $name)
           Returns a list of declared data types for return values of the method called $name within the
           interface $interface.

       my @types = $ins->get_method_return_names($interface, $name)
           Returns a list of declared names for return values of the method called $name within the interface
           $interface.

       my @types = $ins->get_signal_params($interface, $name)
           Returns a list of declared data types for values associated with the signal called $name within the
           interface $interface.

       my @types = $ins->get_signal_param_names($interface, $name)
           Returns a list of declared names for values associated with the signal called $name within the
           interface $interface.

       my $type = $ins->get_property_type($interface, $name)
           Returns the declared data type for property called $name within the interface $interface.

       my $bool = $ins->is_property_readable($interface, $name);
           Returns a true value if the property called $name within the interface $interface can have its value
           read.

       my $bool = $ins->is_property_writable($interface, $name);
           Returns a true value if the property called $name within the interface $interface can have its value
           written to.

       my $xml = $ins->format([$obj])
           Return a string containing an XML document representing the state of the introspection data. The
           optional $obj parameter can be an instance of Net::DBus::Object to include object specific
           information in the XML (eg child nodes).

       my $xml_fragment = $ins->to_xml
           Returns a string containing an XML fragment representing the state of the introspection data. This is
           basically the same as the "format" method, but without the leading doctype declaration.

       $type = $ins->to_xml_type($type)
           Takes a text-based representation of a data type and returns the compact representation used in XML
           introspection data.

       $ins->encode($message, $type, $name, $direction, @args)
           Append a set of values <@args> to a message object $message.  The $type parameter is either "signal"
           or "method" and $direction is either "params" or "returns". The introspection data will be queried to
           obtain the declared data types & the argument marshalling accordingly.

       my @args = $ins->decode($message, $type, $name, $direction)
           Unmarshalls the contents of a message object $message.  The $type parameter is either "signal" or
           "method" and $direction is either "params" or "returns". The introspection data will be queried to
           obtain the declared data types & the arguments unmarshalled accordingly.

AUTHOR

       Daniel P. Berrange

COPYRIGHT

       Copyright (C) 2004-2011 Daniel P. Berrange

SEE ALSO

       Net::DBus::Exporter, Net::DBus::Binding::Message