cee::ug::ResultsQueryItem
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class ResultsQueryItem
Used to identify an element or a node within a DataGeometry in order to query result values for it using a ResultsQuery.
The item type needs to be consistent with the mapping of the queried result: nodes for node-mapped results, and elements for element, element-node- and element-surface- mapped results.
Items can be instantiated with the default constructor and then reused thanks to the second constructor to perform different queries.
Example:
ResultsQuery query(dataSource.get()); // the ResultsQuery object that will fetch the result values ResultQueryItem item1; // first instantiation, no part index or index specified ResultQueryItem item2; std::vector<ResultsQueryItem> items; // The vector of items that will be queried std::vector<ResultsQueryResult> results; // The vector containing the results of the query // First query item1 = ResultsQueryItem(1, 5); // Looking for values at part 1, node 5 (the result is a node-mapped one) item2 = ResultsQueryItem(2, 36); // Looking for values at part 2, node 36 items.push_back(item1); items.push_back(item2); query.scalars(scalarId, stateId, 0, &items, &results); // fills "results" with the scalar values // of the items. The geometry index is 0. // Second query items.clear(); // Clear the query item vector item1 = ResultsQueryItem(0, 523); // Looking for values at part 0, element 523 (the result is an element-mapped one) item2 = ResultsQueryItem(1, 136); // Looking for values at part 1, node 136 items.push_back(item1); items.push_back(item2); query.vectors(vectorId, stateId, 0, &items, &results); // fills "results" with the vector values // of the items. The geometry index is 0.
Public Functions
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ResultsQueryItem()
Constructs a query item object. This is used to instantiate an item for the first time.
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ResultsQueryItem(size_t partIndex, size_t index)
Constructs a query item object and assigns the index of the DataPart which it belongs to as well as its own index within this part.
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bool operator==(const ResultsQueryItem &other) const
Returns true if this item is equal to the passed item.
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size_t partIndex() const
Returns the part index of this item.
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size_t index() const
Returns the item index (node or element)
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ResultsQueryItem()