Enum SystemChange 

pub enum SystemChange {
    Insert {
        key: EncodedKey,
        post: EncodedValues,
    },
    Update {
        key: EncodedKey,
        pre: EncodedValues,
        post: EncodedValues,
    },
    Delete {
        key: EncodedKey,
        pre: Option<EncodedValues>,
    },
}

Internal system/metadata change (flow registrations, catalog ops, etc.) Kept in encoded form for key-level inspection.

Variants

Insert

Fields

key: EncodedKey

post: EncodedValues

Update

Fields

key: EncodedKey

pre: EncodedValues

post: EncodedValues

Delete

Fields

key: EncodedKey

pre: Option<EncodedValues>

Implementations

impl SystemChange

pub fn key(&self) -> &EncodedKey

Get the key for this change.

pub fn value_bytes(&self) -> usize

Calculate the approximate value bytes for this change (pre + post values).

Trait Implementations

impl Clone for SystemChange

fn clone(&self) -> SystemChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SystemChange

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SystemChange

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for SystemChange

fn eq(&self, other: &SystemChange) -> 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 Serialize for SystemChange

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 SystemChange