Struct AttrConfig 

pub struct AttrConfig {

    pub doc: Option<Cow<'static, str>>,
    pub label: Option<Cow<'static, str>>,
    pub unit: Option<Cow<'static, str>>,
    pub standard_unit: Option<f64>,
    pub display_unit: Option<Cow<'static, str>>,
    pub display_format: Option<Cow<'static, str>>,
    pub range: AttrRangeConfig,
    pub alarm: AttrRangeConfig,
    pub warning: AttrRangeConfig,
    pub delta: Option<AttrDeltaConfig>,
    pub change_event: AttrChangeEventConfig,
    pub periodic_event: AttrPeriodicEventConfig,
    pub archive_event: AttrArchiveEventConfig,
    pub enum_labels: Vec<Cow<'static, str>>,
    pub extensions: Vec<Cow<'static, str>>,
}

Represent the current configuration of an attribute

The default configuration is the one of an attribute that declares nothing: no description, no unit, no bound of any kind, no event configured, at the operator display level, which is what a definition starts from and then fills in.

This is exactly what Tango keeps as the attribute properties of a device in the database, and therefore exactly what a client is allowed to change, which is what crate::backend::BackendDev::set_attr_config carries. Everything else a client reads about an attribute is what the attribute is rather than how it is configured, and is declared by the device, see AttrInfo.

Fields

doc: Option<Cow<'static, str>>

The optional description of the attribute, which a client may change like any other property, description being one of the attribute properties Tango keeps.

label: Option<Cow<'static, str>>

The optional label of the attribute.

unit: Option<Cow<'static, str>>

The optional real unit of the attribute: how the raw attribute value is represented.

standard_unit: Option<f64>

The conversion factor for going from the raw attribute value to the international unit system.

display_unit: Option<Cow<'static, str>>

The optional unit for displaying to the user.

display_format: Option<Cow<'static, str>>

The display format of this value. That format is specified using printf formatting symbols using %.

range: AttrRangeConfig

The allowed range for this attribute’s value.

alarm: AttrRangeConfig

The alarm range for this attribute’s value.

warning: AttrRangeConfig

The warning range for this attribute’s value.

delta: Option<AttrDeltaConfig>

The optional delta alarm.

change_event: AttrChangeEventConfig

Configuration of the change event.

periodic_event: AttrPeriodicEventConfig

Configuration of the periodic event.

archive_event: AttrArchiveEventConfig

Configuration of the periodic event.

enum_labels: Vec<Cow<'static, str>>

What the values of the attribute mean, which only a DevEnum has any of: they name its values, an enumerated value being the index of its own label in this list.

This is a property like any other and a client may change it, which is why it is here and not beside AttrInfo::data_kind: what a value of the attribute is stays a DevEnum whatever the labels are renamed to.

extensions: Vec<Cow<'static, str>>

Possible extensions.

Trait Implementations

impl Clone for AttrConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AttrConfig

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

Formats the value using the given formatter.

impl Default for AttrConfig

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for AttrConfig

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for AttrConfig