Struct ScanBookmark 

pub struct ScanBookmark {
    pub total_segments: u32,
    pub segments: BTreeMap<u32, SegmentCursor>,
}

Scan / query bookmark.

Fields

total_segments: u32

TotalSegments the cursors belong to.

segments: BTreeMap<u32, SegmentCursor>

Segment index → cursor.

Implementations

impl ScanBookmark

pub fn from_value(v: &Value) -> Self

Parse; malformed values are treated as absent (a fresh scan is at-least-once-safe).

pub fn to_value(&self) -> Value

Serialize.

pub fn for_total(&self, total: u32) -> BTreeMap<u32, SegmentCursor>

The cursors to resume with for a scan of total segments. Cursors from a different segment count are unusable and dropped (fresh scan).

Trait Implementations

impl Clone for ScanBookmark

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 ScanBookmark

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

Formats the value using the given formatter.

impl Default for ScanBookmark

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ScanBookmark

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ScanBookmark

impl PartialEq for ScanBookmark

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ScanBookmark

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 ScanBookmark