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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 | |
| struct ua_querydataset * | query_data_sets |
| The array of QueryDataSets. More... | |
| int32_t | num_query_data_sets |
| Number of elements in ua_queryfirstresponse::query_data_sets. | |
| struct ua_bytestring | continuation_point |
| Server-defined opaque value that identifies the continuation point. More... | |
| struct ua_parsingresult * | parsing_results |
| List of parsing results for QueryFirst. More... | |
| int32_t | num_parsing_results |
| Number of elements in ua_queryfirstresponse::parsing_results. | |
| struct ua_diagnosticinfo * | diag_infos |
| List of diagnostic information for the requested NodeTypeDescription. More... | |
| int32_t | num_diag_infos |
| Number of elements in ua_queryfirstresponse::diag_infos. | |
| struct ua_contentfilterresult | filter_result |
| A structure that contains any errors associated with the filter. More... | |
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Clear all resources alloctated in an ua_queryfirstresponse struct.
Frees allocated memory like arrays and resets numeric values. The ua_queryfirstresponse struct itself is not freed and must be freed by the caller if required. This function always succeeds for a valid ua_queryfirstresponse struct, that was validly decoded or initilized by ua_queryfirstresponse_init.
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Compare two ua_queryfirstresponse structs.
Compares the content of the ua_queryfirstresponse struct a to the content of the ua_queryfirstresponse 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_queryfirstresponse 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_queryfirstresponse struct.
Copy all fields from struct ua_queryfirstresponse 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_queryfirstresponse 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_queryfirstresponse struct can also be passed to ua_queryfirstresponse_clear. This function will always succeed as long as an ua_queryfirstresponse struct is passed to it.
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Resize the diag_infos array of a ua_queryfirstresponse 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 diag_infos array in number of members. |
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Resize the parsing_results array of a ua_queryfirstresponse 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 parsing_results array in number of members. |
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Resize the query_data_sets array of a ua_queryfirstresponse 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 query_data_sets array in number of members. |
| continuation_point |
Server-defined opaque value that identifies the continuation point.
The continuation point is used only when the Query results are too large to be returned in a single response. “Too large” in this context means that the Server is not able to return a larger response or that the number of QueryDataSets to return exceeds the maximum number of QueryDataSets to return that was specified by the Client in the request.
The continuation point is used in the QueryNext Service. If not used, the value of this parameter is null. If a continuation point is returned, the Client shall call QueryNext to get the next set of QueryDataSets or to free the resources for the continuation point in the Server.
A continuation point shall remain active until the Client passes the continuation point to QueryNext or the session is closed. If the maximum continuation points have been reached, the oldest continuation point shall be reset.
| diag_infos |
List of diagnostic information for the requested NodeTypeDescription.
This list is empty if diagnostics information was not requested in the request header or if no diagnostic information was encountered in processing of the query request.
| filter_result |
A structure that contains any errors associated with the filter.
This structure shall be empty if no errors occurred.
| parsing_results |
List of parsing results for QueryFirst.
The size and order of the list matches the size and order of the NodeTypes request parameter.
This list is populated with any status codes that are related to the processing of the node types that are part of the query. The array can be empty if no errors were encountered. If any node type encountered an error, all node types shall have an associated status code.
| query_data_sets |
The array of QueryDataSets.
This array is empty if no nodes or references met the ua_QueryFirstRequest::node_types criteria. In this case, the ContinuationPoint parameter shall be empty.