Struct ColumnLimit 

pub struct ColumnLimit {
    pub max_items: Option<u32>,
    pub max_estimate: Option<u32>,
    pub unit: Option<String>,
    pub policy: Option<LimitPolicy>,
    pub enabled: bool,
}

One column’s limit.

Both ceilings are optional and independent: a column may cap the number of cards, the estimate they add up to, or both. An enabled limit with neither is refused, because a limit that limits nothing is a configuration mistake that would otherwise read as an enforced rule.

Fields

max_items: Option<u32>

The most cards the column may hold.

max_estimate: Option<u32>

The most estimate the column’s cards may add up to, counted in unit.

unit: Option<String>

The unit max_estimate counts in. Required with max_estimate, refused without it: a unit on an item-count limit would describe nothing.

policy: Option<LimitPolicy>

warn or block. Required for an enabled limit (see the module docs).

enabled: bool

Whether the limit is enforced. false keeps the numbers for later without changing any behaviour today.

Implementations

impl ColumnLimit

pub fn items(max_items: u32, policy: LimitPolicy) -> Self

A limit capping the column at max_items cards, with policy.

pub fn estimate( max_estimate: u32, unit: impl Into<String>, policy: LimitPolicy, ) -> Self

A limit capping the column at max_estimate units, with policy.

pub fn is_empty(&self) -> bool

Whether nothing at all is declared: the state the schema omits on save.

pub fn resolved_policy(&self) -> Option<LimitPolicy>

The policy this limit enforces, when it is enforced at all.

None for a disabled limit and for an enabled one that forgot to state a policy — validation refuses the latter, so a caller that has validated a config and asked an enabled limit for its policy always gets one.

Trait Implementations

impl Clone for ColumnLimit

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 ColumnLimit

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

Formats the value using the given formatter.

impl Default for ColumnLimit

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ColumnLimit

where ColumnLimit: Default,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ColumnLimit

impl PartialEq for ColumnLimit

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ColumnLimit

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ColumnLimit