Enum ViewEffect 

pub enum ViewEffect {
    NoEffect,
    Add {
        key: String,
    },
    Remove {
        key: String,
    },
    Update {
        key: String,
    },
    Replace {
        old_key: String,
        new_key: String,
    },
}

Result of evaluating whether an update affects a materialized view

Variants

NoEffect

Update does not affect the view result

Add

Entity should be added to the view result

Fields

key: String

Remove

Entity should be removed from the view result

Fields

key: String

Update

Entity in view was updated

Fields

key: String

Replace

Entity replaces another in the view (for single-result views)

Fields

old_key: String

new_key: String

Trait Implementations

impl Clone for ViewEffect

fn clone(&self) -> ViewEffect

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewEffect

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

Formats the value using the given formatter.

impl PartialEq for ViewEffect

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ViewEffect