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High Performance OPC UA Server SDK
1.2.0.193
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High Performance OPC UA Server SDK
1.2.0.193
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Data Fields | |
| uint32_t | sequence_number |
| The Message that contains one or more Notifications. | |
| ua_datetime | publish_time |
| The sequence number of the NotificationMessage. | |
| struct ua_extensionobject * | notification_data |
| The list of NotificationData structures. More... | |
| int32_t | num_notification_data |
| Number of elements in ua_notificationmessage::notification_data. | |
Related Functions | |
| void | ua_notificationmessage_init (struct ua_notificationmessage *t) |
| Initialize an ua_notificationmessage struct with a valid value. More... | |
| void | ua_notificationmessage_clear (struct ua_notificationmessage *t) |
| Clear all resources alloctated in an ua_notificationmessage struct. More... | |
| int | ua_notificationmessage_compare (const struct ua_notificationmessage *a, const struct ua_notificationmessage *b) |
| Compare two ua_notificationmessage structs. More... | |
| int | ua_notificationmessage_copy (struct ua_notificationmessage *dst, const struct ua_notificationmessage *src) |
| Create a copy of a ua_notificationmessage struct. More... | |
| static int | ua_notificationmessage_resize_notification_data_array (struct ua_notificationmessage *val, int32_t new_len) |
| Resize the notification_data array of a ua_notificationmessage struct. More... | |
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Clear all resources alloctated in an ua_notificationmessage struct.
Frees allocated memory like arrays and resets numeric values. The ua_notificationmessage struct itself is not freed and must be freed by the caller if required. This function always succeeds for a valid ua_notificationmessage struct, that was validly decoded, initilized by ua_notificationmessage_init or created with ua_notificationmessage_copy.
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Compare two ua_notificationmessage structs.
Compares the content of the ua_notificationmessage struct a to the content of the ua_notificationmessage struct b. If a is smaller than b, an integer less than zero is returned, if a is bigger than b, an integer greater than zero is returned. If both structs are equal zero is returned.
This function creates a total order on ua_notificationmessage structs, so it is well suited to not only determine equality, but also sort multiple instances of this struct.
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Create a copy of a ua_notificationmessage struct.
Copy all fields from struct ua_notificationmessage src to dst. Creates a deep copy so all content is recusively copied and both src and dst can be used and must be freed separately.
dst is not cleared before the copy operation, so it must not have any allocated data. It may or may not be initilized by the caller before copy.
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Initialize an ua_notificationmessage struct with a valid value.
After initialization the fields of the struct are set to valid and consistent values and can safley be accessed. An initialized ua_notificationmessage struct can also be passed to ua_notificationmessage_compare, ua_notificationmessage_copy and ua_notificationmessage_clear. This function will always succeed as long as an ua_notificationmessage struct is passed to it.
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Resize the notification_data array of a ua_notificationmessage struct.
Depending on new_len and the current size of the array, the array will be created, increased, decreased or deleted. In case array members are removed these are cleared properly, new array members are initialized with zero.
| new_len | New length of the notification_data array in number of members. |
| notification_data |
The list of NotificationData structures.
The NotificationData parameter type is an extensible parameter type. It specifies the types of Notifications that can be sent.
Notifications of the same type should be grouped into one NotificationData element. If a Subscription contains MonitoredItems for events and data, this array should have not more than 2 elements. If the Subscription contains MonitoredItems only for data or only for events, the array size should always be one for this Subscription.