Examples with Node org.hisp.dhis.node.Node used on opensource projects

Example 16 with Node

use of org.hisp.dhis.node.Node in project dhis2-core by dhis2.

the class DimensionController method getItems.

@SuppressWarnings("unchecked")
@GetMapping("/{uid}/items")
@ResponseBody
public RootNode getItems(@PathVariable String uid, @RequestParam Map<String, String> parameters, OrderParams orderParams) throws QueryParserException {
    List<String> fields = newArrayList(contextService.getParameterValues("fields"));
    List<String> filters = newArrayList(contextService.getParameterValues("filter"));
    List<Order> orders = orderParams.getOrders(getSchema(DimensionalItemObject.class));
    WebOptions options = new WebOptions(parameters);
    if (fields.isEmpty()) {
        fields.addAll(Preset.defaultPreset().getFields());
    }
    // This is the base list used in this flow. It contains only items
    // allowed to the current user.
    List<DimensionalItemObject> readableItems = dimensionService.getCanReadDimensionItems(uid);
    // This is needed for two reasons:
    // 1) We are doing in-memory paging;
    // 2) We have to count all items respecting the filtering.
    Query queryForCount = queryService.getQueryFromUrl(DimensionalItemObject.class, filters, orders);
    queryForCount.setObjects(readableItems);
    List<DimensionalItemObject> forCountItems = (List<DimensionalItemObject>) queryService.query(queryForCount);
    Query query = queryService.getQueryFromUrl(DimensionalItemObject.class, filters, orders, getPaginationData(options));
    query.setObjects(readableItems);
    query.setDefaultOrder();
    List<DimensionalItemObject> paginatedItems = (List<DimensionalItemObject>) queryService.query(query);
    RootNode rootNode = NodeUtils.createMetadata();
    CollectionNode collectionNode = rootNode.addChild(fieldFilterService.toCollectionNode(DimensionalItemObject.class, new FieldFilterParams(paginatedItems, fields)));
    collectionNode.setName("items");
    for (Node node : collectionNode.getChildren()) {
        ((AbstractNode) node).setName("item");
    }
    // Adding pagination elements to the root node.
    final int totalOfItems = isNotEmpty(forCountItems) ? forCountItems.size() : 0;
    dimensionItemPageHandler.addPaginationToNodeIfEnabled(rootNode, options, uid, totalOfItems);
    return rootNode;
}