Struct NoteUpdateTracker 

pub struct NoteUpdateTracker { /* private fields */ }

Contains note changes to apply to the store.

This includes new notes that have been created and existing notes that have been updated. The tracker also lets state changes be applied to the contained notes, this allows for already updated notes to be further updated as new information is received.

Implementations

impl NoteUpdateTracker

pub fn new( input_notes: impl IntoIterator<Item = InputNoteRecord>, output_notes: impl IntoIterator<Item = OutputNoteRecord>, ) -> Self

Creates a NoteUpdateTracker with already-tracked notes.

pub fn for_transaction_updates( new_input_notes: impl IntoIterator<Item = InputNoteRecord>, updated_input_notes: impl IntoIterator<Item = InputNoteRecord>, new_output_notes: impl IntoIterator<Item = OutputNoteRecord>, ) -> Self

Creates a NoteUpdateTracker for updates related to transactions.

A transaction can:

• Create input notes
• Update existing input notes (by consuming them)
• Create output notes

pub fn updated_input_notes(&self) -> impl Iterator<Item = &InputNoteUpdate>

Returns all input note records that have been updated.

This may include:

• New notes that have been created that should be inserted.
• Existing tracked notes that should be updated.

pub fn updated_output_notes(&self) -> impl Iterator<Item = &OutputNoteUpdate>

Returns all output note records that have been updated.

This may include:

• New notes that have been created that should be inserted.
• Existing tracked notes that should be updated.

pub fn is_empty(&self) -> bool

Returns whether no new note-related information has been retrieved.

pub fn unspent_nullifiers(&self) -> impl Iterator<Item = Nullifier>

Returns input and output note unspent nullifiers.

pub fn extend_nullifiers( &mut self, nullifiers: impl IntoIterator<Item = Nullifier>, )

Appends nullifiers to the per-account ordered nullifier list.

Nullifiers from the same account must be in execution order; ordering across different accounts is not guaranteed.

Trait Implementations

impl Clone for NoteUpdateTracker

fn clone(&self) -> NoteUpdateTracker

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NoteUpdateTracker

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

Formats the value using the given formatter.

impl Default for NoteUpdateTracker

fn default() -> NoteUpdateTracker

Returns the “default value” for a type.