Struct MemoryStateTransitionStore 

pub struct MemoryStateTransitionStore { /* private fields */ }

In-memory state transition store (for testing/development) For production, implement FileStateTransitionStore or DatabaseStateTransitionStore

Implementations

impl MemoryStateTransitionStore

pub fn new() -> Self

pub fn record_transition( &self, transition: StateTransition, ) -> Result<u64, String>

Record a committed state transition Returns the store index assigned to this transition

pub fn get_by_transaction_id( &self, transaction_id: &str, ) -> Option<StateTransitionRecord>

Get a transition by transaction ID

pub fn get_by_index(&self, store_index: u64) -> Option<StateTransitionRecord>

Get a transition by store index

pub fn get_range( &self, start_index: u64, end_index: u64, ) -> Vec<StateTransitionRecord>

Get transitions in range [start_index, end_index)

pub fn get_from_version(&self, state_hash: &str) -> Vec<StateTransitionRecord>

Find transitions that led from a specific state version

pub fn get_to_version(&self, state_hash: &str) -> Option<StateTransitionRecord>

Find the transition that led to a specific state version

pub fn size(&self) -> u64

Get the current size of the store (number of transitions)

pub fn iter(&self) -> Vec<StateTransitionRecord>

Iterate over all transitions in the store

pub fn contains_transaction_id(&self, transaction_id: &str) -> bool

Check if a transaction has been recorded

pub fn get_transition_chain( &self, from_state_hash: &str, ) -> Vec<StateTransitionRecord>

Get the chain of transitions from a starting state to the current state Returns transitions in order

pub fn truncate(&self, truncate_at: u64) -> Result<(), String>

Truncate the store at the given index (for recovery/compaction) Keeps records with store_index < truncate_at

Trait Implementations

impl Clone for MemoryStateTransitionStore

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for MemoryStateTransitionStore

fn default() -> Self

Returns the “default value” for a type.