NodeOPCUA API Documentation
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    Interface UAInitialStateType

    Initial State Type

    The InitialStateType is a subtype of the StateType and is formally defined in Table B.8. An Object of the InitialStateType represents the State that a FiniteStateMachine enters when it is activated.

    Each FiniteStateMachine can have at most one State of type InitialStateType, but a FiniteStateMachine does not have to have a State of this type.

    A SubStateMachine goes into its initial state whenever the parent state is entered. However, a state machine may define a transition that goes directly to a state of the SubStateMachine. In this case the SubStateMachine goes into that State instead of the initial State. The two scenarios are illustrated in Figure B.4. The transition from State5 to State6 causes the SubStateMachine to go into the initial State (State7), however, the transition from State4 to State8 causes the parent machine to go to State6 and the SubStateMachine will go to State8.

    If no initial state for a SubStateMachine exists and the State having the SubStateMachine is entered directly, then the State of the SubStateMachine is server-specific.

    interface UAInitialStateType {
        browseName: QualifiedName;
        hasMethods: boolean;
        isAbstract: boolean;
        nodeClass: ObjectType;
        nodeId: NodeId;
        onFirstBrowseAction?: (this: BaseNode) => Promise<void>;
        stateNumber: UAProperty<number, UInt32>;
        subtypeOf: NodeId | null;
        subtypeOfObj: UAObjectType | null;
        get accessRestrictions(): AccessRestrictionsFlag | undefined;
        get addressSpace(): IAddressSpace;
        get description(): LocalizedText;
        get displayName(): LocalizedText[];
        get modellingRule(): ModellingRuleType | undefined;
        get namespace(): INamespace;
        get namespaceIndex(): number;
        get namespaceUri(): string;
        get parentNodeId(): NodeId | undefined;
        get rolePermissions(): RolePermissionType[] | undefined;
        addReference(options: AddReferenceOpts): void;
        allReferences(): UAReference[];
        browseNode(
            browseDescription: BrowseDescriptionOptions2,
            session?: ISessionContext,
        ): ReferenceDescription[];
        browseNodeByTargetName(
            relativePathElement: RelativePathElement,
            isLast: boolean,
        ): NodeId[];
        emit<K extends keyof BaseNodeEvents>(
            event: K,
            ...args: Parameters<BaseNodeEvents[K]>,
        ): boolean;
        findReference(
            referenceType: string | NodeId | UAReferenceType,
            isForward?: boolean,
        ): UAReference | null;
        findReferences(
            referenceType: string | NodeId | UAReferenceType,
            isForward?: boolean,
        ): UAReference[];
        findReferencesAsObject(
            referenceType: string | NodeId | UAReferenceType,
            isForward?: boolean,
        ): BaseNode<BaseNodeEvents>[];
        findReferencesEx(
            referenceType: string | NodeId | UAReferenceType,
            browseDirection?: BrowseDirection,
        ): UAReference[];
        findReferencesExAsObject(
            referenceType: string | NodeId | UAReferenceType,
            browseDirection?: BrowseDirection,
        ): BaseNode<BaseNodeEvents>[];
        fullName(): string;
        getAccessRestrictions(inherited: boolean): AccessRestrictionsFlag;
        getAggregates(): BaseNode<BaseNodeEvents>[];
        getChildByName(
            browseName: QualifiedNameOptions,
        ): BaseNode<BaseNodeEvents> | null;
        getChildByName(
            browseName: string,
            namespaceIndex?: number,
        ): BaseNode<BaseNodeEvents> | null;
        getComponentByName(
            componentName: QualifiedNameOptions,
        ): UAObject<UAObjectEvents> | UAVariable<UAVariableEvents> | null;
        getComponentByName(
            componentName: string,
            namespaceIndex?: number,
        ): UAObject<UAObjectEvents> | UAVariable<UAVariableEvents> | null;
        getComponents(): BaseNode<BaseNodeEvents>[];
        getDisplayName(locale?: string): string;
        getEventSourceOfs(): BaseNode<BaseNodeEvents>[];
        getEventSources(): BaseNode<BaseNodeEvents>[];
        getMethodById(nodeId: NodeId): UAMethod<UAMethodEvents> | null;
        getMethodByName(
            methodName: QualifiedNameOptions,
        ): UAMethod<UAMethodEvents> | null;
        getMethodByName(
            methodName: string,
            namespaceIndex?: number,
        ): UAMethod<UAMethodEvents> | null;
        getMethodByName(
            methodName: QualifiedNameLike,
            namespaceIndex?: number,
        ): UAMethod<UAMethodEvents> | null;
        getMethods(): UAMethod<UAMethodEvents>[];
        getNodeVersion(): UAProperty<UAString, String> | null;
        getNotifiers(): BaseNode<BaseNodeEvents>[];
        getProperties(): BaseNode<BaseNodeEvents>[];
        getPropertyByName(
            propertyName: QualifiedNameOptions,
        ): UAVariable<UAVariableEvents> | null;
        getPropertyByName(
            propertyName: string,
            namespaceIndex?: number,
        ): UAVariable<UAVariableEvents> | null;
        getRolePermissions(inherited: boolean): RolePermissionType[] | null;
        install_extra_properties(): void;
        instantiate(options: InstantiateObjectOptions): UAObject;
        isDisposed(): boolean;
        isSubtypeOf(referenceType: NodeIdLike | UAObjectType): boolean;
        isSupertypeOf(referenceType: NodeIdLike | UAObjectType): boolean;
        listenerCount<K extends keyof BaseNodeEvents>(event: K): number;
        off<K extends keyof BaseNodeEvents>(
            event: K,
            listener: BaseNodeEvents[K],
        ): this;
        on<K extends keyof BaseNodeEvents>(
            event: K,
            listener: BaseNodeEvents[K],
        ): this;
        once<K extends keyof BaseNodeEvents>(
            event: K,
            listener: BaseNodeEvents[K],
        ): this;
        readAttribute(
            context: ISessionContext | null,
            attributeId: AttributeIds,
            indexRange?: NumericRange,
            dataEncoding?: QualifiedNameLike | null,
        ): DataValue;
        removeAllListeners(): void;
        removeListener<K extends keyof BaseNodeEvents>(
            event: K,
            listener: BaseNodeEvents[K],
        ): void;
        removeReference(referenceOpts: AddReferenceOpts): void;
        setAccessRestrictions(accessRestrictions: AccessRestrictionsFlag): void;
        setDescription(value: LocalizedTextLike | null): void;
        setDisplayName(value: LocalizedTextLike | LocalizedTextLike[]): void;
        setMaxListeners(n: number): void;
        setRolePermissions(rolePermissions: RolePermissionTypeOptions[]): void;
        writeAttribute(
            context: ISessionContext | null,
            writeValue: WriteValueOptions,
            callback: (err: Error | null, statusCode?: StatusCode) => void,
        ): void;
    }

    Hierarchy (View Summary)

    Index

    Properties

    browseName hasMethods isAbstract nodeClass nodeId onFirstBrowseAction? stateNumber subtypeOf subtypeOfObj

    Accessors

    accessRestrictions addressSpace description displayName modellingRule namespace namespaceIndex namespaceUri parentNodeId rolePermissions

    Methods

    addReference allReferences browseNode browseNodeByTargetName emit findReference findReferences findReferencesAsObject findReferencesEx findReferencesExAsObject fullName getAccessRestrictions getAggregates getChildByName getComponentByName getComponents getDisplayName getEventSourceOfs getEventSources getMethodById getMethodByName getMethods getNodeVersion getNotifiers getProperties getPropertyByName getRolePermissions install_extra_properties instantiate isDisposed isSubtypeOf isSupertypeOf listenerCount off on once readAttribute removeAllListeners removeListener removeReference setAccessRestrictions setDescription setDisplayName setMaxListeners setRolePermissions writeAttribute

    Properties

    browseName: QualifiedName
    hasMethods: boolean
    isAbstract: boolean
    nodeClass: ObjectType
    nodeId: NodeId
    onFirstBrowseAction?: (this: BaseNode) => Promise<void>
    stateNumber: UAProperty<number, UInt32>
    subtypeOf: NodeId | null
    subtypeOfObj: UAObjectType | null

    Accessors

    • get accessRestrictions(): AccessRestrictionsFlag | undefined

      Returns AccessRestrictionsFlag | undefined

    • get addressSpace(): IAddressSpace

      Returns IAddressSpace

    • get description(): LocalizedText

      Returns LocalizedText

    • get displayName(): LocalizedText[]

      Returns LocalizedText[]

    • get modellingRule(): ModellingRuleType | undefined

      Returns ModellingRuleType | undefined

    • get namespace(): INamespace

      Returns INamespace

    • get namespaceIndex(): number

      Returns number

    • get namespaceUri(): string

      Returns string

    • get parentNodeId(): NodeId | undefined

      Returns NodeId | undefined

    • get rolePermissions(): RolePermissionType[] | undefined

      Returns RolePermissionType[] | undefined

    Methods

    • find the the references that are strictly of type reference.

      The isForward boolean flag specifies the direction of the references to be looked for.

      Forward direction is implied if omitted.

      • will throw an exception if more than one reference exists with the referenceType.
      • will return null if no reference exists.

      Parameters

      Returns UAReference | null

    • find all the references that are strictly of type reference. The isForward boolean flag specifies the direction of the references to be looked for.

      Forward direction is implied if omitted.

      Parameters

      Returns UAReference[]

    • find all the nodes that are referenced by references strictly of type reference.

      The isForward boolean flag specifies the direction of the references to be looked for.

      Forward direction is implied if omitted.

      • will throw an exception if more than one reference exists with the referenceType.
      • will return null if no reference exists.

      Parameters

      Returns BaseNode<BaseNodeEvents>[]

    • return a complete name of this object by pre-pending name of its parent(s) to its own name

      Returns string

    • get effective accessRestrictions if (inherited is true) and node has no accessRestrictions, then default accessRestriction from namespace is returned if (inherited is false) and node has no accessRestrictions, then AccessRestrictionsFlag.None is returned

      Parameters

      • inherited: boolean

      Returns AccessRestrictionsFlag

    • Parameters

      • Optionallocale: string

        the locale of the text to return (e.g. en-EN)

      Returns string

    • private

      Returns void

    • Returns boolean

    • Returns void

    • Parameters

      • n: number

      Returns void

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