object

Access for nodeclass object specific attributes. More...

Functions
ua_node_t	ua_object_create_instance (struct ua_nodeid *nodeid, ua_node_t type, const char *browsename, const char *displayname)
	Create an instance of a given objecttype. More...
void	ua_object_delete_instance (ua_node_t node)
	Delete an instance of any type. More...
ua_node_t	ua_object_create_folder (struct ua_nodeid *nodeid, ua_node_t parent, const char *name)
	Create a new object node from type folder. More...
int	ua_object_set_event_notifier (ua_node_t node, uint8_t event_notifier)
	Sets the event_notifier attribute for the given node. More...
int	ua_object_get_event_notifier (ua_node_t node)
	Returns the event_notifier attribute for the given node. More...

Detailed Description

Access for nodeclass object specific attributes.

Function Documentation

ua_node_t ua_object_create_folder	(	struct ua_nodeid *	nodeid,
		ua_node_t	parent,
		const char *	name
	)

Create a new object node from type folder.

Parameters

nodeid	Nodeid of the new folder.
parent	Parent folder of the new folder.
name	Browsename and displayname of the new folder.

Returns

handle of the new folder node on success, UA_NODE_INVALID on failure.

ua_node_t ua_object_create_instance	(	struct ua_nodeid *	nodeid,
		ua_node_t	type,
		const char *	browsename,
		const char *	displayname
	)

Create an instance of a given objecttype.

The nodeids for the child nodes are generated dynamically and depend on nodeid. If nodeid is a string identifier the new nodes are concatenations of this string with the browsename of the child node. If nodeid is a numeric identifier the nodeid is incremented for each child. Guid identifiers are generated randomly for each new child node. Opaque identifiers are not supported for nodeid.

Parameters

nodeid	Nodeid the new instance should have. Must not exist yet.
type	The type of the new instance.
browsename	Browsename for the new node, no browsename is set if NULL.
displayname	Displayname for the new node, not displayname is set if NULL.

Returns

The node of the new instance or UA_NODE_INVALID on error.

void ua_object_delete_instance

(

ua_node_t

node

)

Delete an instance of any type.

Deletes the node node and all its hierachical referenced subnodes and all references from or to these nodes.

Note: If additional nodes were added to the instance these will also be deleted and if there is a hierachical reference to the root node your complete addressspace might be deleted.

int ua_object_get_event_notifier

(

ua_node_t

node

)

Returns the event_notifier attribute for the given node.

Parameters

node	Node handle which identifies the node.

Returns

A positive value on success which contains the event_notifier attribute, a negative error code if the operation fails.

int ua_object_set_event_notifier	(	ua_node_t	node,
		uint8_t	event_notifier
	)

Sets the event_notifier attribute for the given node.

This operation is only allowed for nodes with nodeclass==UA_NODECLASS_OBJECT.

Parameters

node	Node handle which identifies the node.
event_notifier	This may be a bitwise ORed combination of UA_EVENTNOTIFIER_SUBSCRIBETOEVENTS (1), UA_EVENTNOTIFIER_HISTORYREAD (4) and UA_EVENTNOTIFIER_HISTORYWRITE (8), or simply UA_EVENTNOTIFIER_NONE (0).

Returns

Zero on success, or UA_EBADINVALIDARGUMENT if the node handle or nodeclass is invalid.