Examples with Node org.eclipse.milo.opcua.sdk.core.nodes.Node used on opensource projects

Example 1 with Node

use of org.eclipse.milo.opcua.sdk.core.nodes.Node in project milo by eclipse.

the class AttributeReader method getEncodingId.

@Nullable
private static NodeId getEncodingId(AttributeContext context, UaServerNode node, QualifiedName encodingName) {
    // TODO avoid dynamic lookup by registering codecs with their associated DataType and Encoding name
    NodeId dataTypeId;
    if (node instanceof VariableNode) {
        dataTypeId = ((VariableNode) node).getDataType();
    } else if (node instanceof VariableTypeNode) {
        dataTypeId = ((VariableTypeNode) node).getDataType();
    } else {
        return null;
    }
    AddressSpaceManager addressSpaceManager = context.getServer().getAddressSpaceManager();
    UaNode dataTypeNode = addressSpaceManager.getManagedNode(dataTypeId).orElse(null);
    if (dataTypeNode != null) {
        return dataTypeNode.getReferences().stream().filter(r -> r.isForward() && Identifiers.HasEncoding.equals(r.getReferenceTypeId())).flatMap(r -> opt2stream(addressSpaceManager.getManagedNode(r.getTargetNodeId()))).filter(n -> encodingName.equals(n.getBrowseName())).map(Node::getNodeId).findFirst().orElse(null);
    } else {
        return null;
    }
}

Example 2 with Node

use of org.eclipse.milo.opcua.sdk.core.nodes.Node in project milo by eclipse.

the class UaObjectNode method findMethodDeclarationId.

/**
 * Find the NodeId of the MethodNode on the type definition with the same name as {@code methodName}.
 *
 * @param methodName the name of the MethodNode to search for.
 * @return the NodeId of the MethodNode on the type definition with the same name as {@code methodName}. Will be
 * {@link NodeId#NULL_VALUE} if not found.
 */
private NodeId findMethodDeclarationId(NodeId typeDefinitionId, QualifiedName methodName) {
    AddressSpaceManager asm = getNodeContext().getServer().getAddressSpaceManager();
    NamespaceTable namespaceTable = getNodeContext().getServer().getNamespaceTable();
    NodeId nodeId = asm.getManagedReferences(typeDefinitionId).stream().filter(HAS_COMPONENT_PREDICATE.or(HAS_ORDERED_COMPONENT_PREDICATE)).flatMap(r -> opt2stream(getManagedNode(r.getTargetNodeId()))).filter(n -> (n instanceof UaMethodNode) && Objects.equals(n.getBrowseName(), methodName)).findFirst().map(Node::getNodeId).orElse(NodeId.NULL_VALUE);
    if (nodeId.isNull()) {
        NodeId parentTypeId = asm.getManagedReferences(typeDefinitionId).stream().filter(Reference.SUBTYPE_OF).flatMap(r -> opt2stream(r.getTargetNodeId().toNodeId(namespaceTable))).findFirst().orElse(null);
        if (parentTypeId != null) {
            return findMethodDeclarationId(parentTypeId, methodName);
        } else {
            return nodeId;
        }
    } else {
        return nodeId;
    }
}

Example 3 with Node

use of org.eclipse.milo.opcua.sdk.core.nodes.Node in project milo by eclipse.

the class UaMethodNode method getModellingRuleNode.

public Optional<ObjectNode> getModellingRuleNode() {
    Node node = getReferences().stream().filter(HAS_MODELLING_RULE_PREDICATE).findFirst().flatMap(r -> getManagedNode(r.getTargetNodeId())).orElse(null);
    ObjectNode objectNode = (node instanceof ObjectNode) ? (ObjectNode) node : null;
    return Optional.ofNullable(objectNode);
}

Example 4 with Node

use of org.eclipse.milo.opcua.sdk.core.nodes.Node in project milo by eclipse.

the class UaVariableNode method getModellingRuleNode.

public Optional<ObjectNode> getModellingRuleNode() {
    Node node = getReferences().stream().filter(HAS_MODELLING_RULE_PREDICATE).findFirst().flatMap(r -> getManagedNode(r.getTargetNodeId())).orElse(null);
    ObjectNode objectNode = (node instanceof ObjectNode) ? (ObjectNode) node : null;
    return Optional.ofNullable(objectNode);
}

Example 5 with Node

use of org.eclipse.milo.opcua.sdk.core.nodes.Node in project milo by eclipse.

the class UaNode method getComponentAsync.

protected CompletableFuture<? extends UaNode> getComponentAsync(QualifiedName browseName, NodeClass nodeClass) {
    UInteger nodeClassMask = uint(nodeClass.getValue());
    UInteger resultMask = uint(BrowseResultMask.All.getValue());
    CompletableFuture<BrowseResult> future = client.browse(new BrowseDescription(getNodeId(), BrowseDirection.Forward, Identifiers.HasComponent, false, nodeClassMask, resultMask));
    return future.thenCompose(result -> {
        List<ReferenceDescription> references = l(result.getReferences());
        Optional<CompletableFuture<? extends UaNode>> node = references.stream().filter(r -> browseName.equals(r.getBrowseName())).flatMap(r -> {
            Optional<CompletableFuture<? extends UaNode>> opt = r.getNodeId().toNodeId(client.getNamespaceTable()).map(id -> client.getAddressSpace().getNodeAsync(id));
            return opt2stream(opt);
        }).findFirst();
        return node.orElse(failedUaFuture(StatusCodes.Bad_NotFound));
    });
}