Struct SequenceManager 

pub struct SequenceManager { /* private fields */ }

Sequence manager

Manages in-memory cache of sequences with optional persistence and WAL backing. Thread-safe via parking_lot::RwLock.

Implementations

impl SequenceManager

pub fn new() -> Self

Create a new SequenceManager without persistence

pub fn with_storage(storage: Arc<dyn SequenceStorage>) -> Self

Create a new SequenceManager with a persistence backend

pub fn with_wal( storage: Arc<dyn SequenceStorage>, wal_writer: Arc<Mutex<dyn WalWriter>>, ) -> Self

Create a new SequenceManager with persistence and WAL support

pub fn initialize(&self) -> Result<(), StorageError>

Initialize by loading all sequences from storage

pub fn create_sequence( &self, name: String, start: i64, increment: i64, min_value: i64, max_value: i64, cycle: bool, ) -> Result<(), StorageError>

Create a new sequence

pub fn drop_sequence(&self, name: &str) -> Result<(), StorageError>

Drop (delete) a sequence

pub fn current_value(&self, name: &str) -> Result<i64, StorageError>

Get the current value of a sequence without incrementing

pub fn next_value(&self, name: &str) -> Result<i64, StorageError>

Get the next value of a sequence (atomic increment)

pub fn alter_sequence( &self, name: &str, increment: Option<i64>, min_value: Option<i64>, max_value: Option<i64>, cycle: Option<bool>, ) -> Result<(), StorageError>

Alter sequence properties

pub fn flush(&self) -> Result<(), StorageError>

Flush all sequences to storage

pub fn list_sequences(&self) -> Vec<String>

List all sequence names

pub fn exists(&self, name: &str) -> bool

Check if a sequence exists

Trait Implementations

impl Debug for SequenceManager

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

Formats the value using the given formatter.

impl Default for SequenceManager

fn default() -> Self

Returns the “default value” for a type.