Struct opcua_server::address_space::variable::Variable

pub struct Variable { /* private fields */ }

Implementations

impl Variable

pub fn new<V>(
    node_id: &NodeId,
    browse_name: &str,
    display_name: &str,
    description: &str,
    value: V
) -> Variablewhere
    V: Into<Variant>,

pub fn new_with_data_type<V>(
    node_id: &NodeId,
    browse_name: &str,
    display_name: &str,
    description: &str,
    data_type: DataTypeId,
    value: V
) -> Variablewhere
    V: Into<Variant>,

pub fn new_data_value(
    node_id: &NodeId,
    browse_name: &str,
    display_name: &str,
    description: &str,
    data_type: DataTypeId,
    value: DataValue
) -> Variable

Constructs a new variable with the specified id, name, type and value

pub fn is_valid(&self) -> bool

pub fn value(&self) -> DataValue

pub fn set_value<V>(&mut self, value: V)where
    V: Into<DataValue>,

Sets the variable’s value

pub fn set_value_direct<V>(&mut self, now: &DateTime, value: V)where
    V: Into<Variant>,

Sets the variable’s value directly but first test to see if it has changed. If the value has not changed the existing timestamps are preserved.

pub fn set_value_getter(
    &mut self,
    getter: Arc<Mutex<dyn AttributeGetter + Send>>
)

Sets a getter function that will be called to get the value of this variable.

pub fn set_value_setter(
    &mut self,
    setter: Arc<Mutex<dyn AttributeSetter + Send>>
)

Sets a setter function that will be called to set the value of this variable. Note you most likely want to set the corresponding getter too otherwise you will never get back the values you set otherwise.

pub fn minimum_sampling_interval(&self) -> Option<i32>

Gets the minimum sampling interval, if the attribute was set

pub fn set_minimum_sampling_interval(&mut self, minimum_sampling_interval: i32)

Sets the minimum sampling interval

Specifies in milliseconds how fast the server can reasonably sample the value for changes

The value 0 means server is to monitor the value continuously. The value -1 means indeterminate.

pub fn is_readable(&self) -> bool

pub fn is_writable(&self) -> bool

pub fn set_writable(&mut self, writable: bool)

pub fn set_access_level(&mut self, access_level: AccessLevel)

pub fn access_level(&self) -> AccessLevel

pub fn is_user_readable(&self) -> bool

pub fn is_user_writable(&self) -> bool

pub fn set_user_access_level(&mut self, user_access_level: UserAccessLevel)

pub fn user_access_level(&self) -> UserAccessLevel

pub fn value_rank(&self) -> i32

pub fn historizing(&self) -> bool

pub fn array_dimensions(&self) -> Option<Vec<u32>>

Trait Implementations

impl Debug for Variable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Variable

fn default() -> Self

Returns the “default value” for a type.

impl Into<NodeType> for Variable

fn into(self) -> NodeType

Converts this type into the (usually inferred) input type.

impl Node for Variable

fn node_class(&self) -> NodeClass

fn node_id(&self) -> NodeId

fn browse_name(&self) -> QualifiedName

fn display_name(&self) -> LocalizedText

fn description(&self) -> Option<LocalizedText>

fn write_mask(&self) -> Option<WriteMask>

fn set_write_mask(&mut self, write_mask: WriteMask)

fn user_write_mask(&self) -> Option<WriteMask>

fn set_user_write_mask(&mut self, write_mask: WriteMask)

fn find_attribute(&self, attribute_id: AttributeId) -> Option<DataValue>

fn set_attribute(
    &mut self,
    attribute_id: AttributeId,
    value: DataValue
) -> Result<(), StatusCode>