Examples with Tree org.eclipse.milo.opcua.stack.core.util.Tree used on opensource projects

Example 1 with Tree

use of org.eclipse.milo.opcua.stack.core.util.Tree in project milo by eclipse.

the class DataTypeTreeBuilder method addChildren.

private static CompletableFuture<Unit> addChildren(Tree<DataTypeTree.DataType> tree, UaStackClient client, OpcUaSession session, NamespaceTable namespaceTable) {
    CompletableFuture<List<ReferenceDescription>> subtypes = browseSafe(client, session, new BrowseDescription(tree.getValue().getNodeId(), BrowseDirection.Forward, Identifiers.HasSubtype, false, uint(NodeClass.DataType.getValue()), uint(BrowseResultMask.All.getValue())));
    CompletableFuture<List<DataTypeTree.DataType>> dataTypesFuture = subtypes.thenCompose(references -> {
        Stream<CompletableFuture<DataTypeTree.DataType>> dataTypeFutures = references.stream().map(dataTypeReference -> {
            NodeId dataTypeId = dataTypeReference.getNodeId().toNodeId(namespaceTable).orElse(NodeId.NULL_VALUE);
            CompletableFuture<List<ReferenceDescription>> encodings = browseSafe(client, session, new BrowseDescription(dataTypeId, BrowseDirection.Forward, Identifiers.HasEncoding, false, uint(NodeClass.Object.getValue()), uint(BrowseResultMask.All.getValue())));
            return encodings.thenApply(encodingReferences -> {
                NodeId binaryEncodingId = null;
                NodeId xmlEncodingId = null;
                for (ReferenceDescription r : encodingReferences) {
                    if (r.getBrowseName().equals(OpcUaDefaultBinaryEncoding.ENCODING_NAME)) {
                        binaryEncodingId = r.getNodeId().toNodeId(namespaceTable).orElse(null);
                    } else if (r.getBrowseName().equals(OpcUaDefaultXmlEncoding.ENCODING_NAME)) {
                        xmlEncodingId = r.getNodeId().toNodeId(namespaceTable).orElse(null);
                    }
                }
                return new DataTypeTree.DataType(dataTypeReference.getBrowseName(), dataTypeId, binaryEncodingId, xmlEncodingId);
            });
        });
        return FutureUtils.sequence(dataTypeFutures);
    });
    return dataTypesFuture.thenCompose(dataTypes -> {
        Stream<CompletableFuture<Unit>> futures = dataTypes.stream().map(tree::addChild).map(childNode -> addChildren(childNode, client, session, namespaceTable));
        return FutureUtils.sequence(futures);
    }).thenApply(v -> Unit.VALUE);
}