Struct CursorStore 

pub struct CursorStore { /* private fields */ }

Storage for cursors within a session

Implementations

impl CursorStore

pub fn new() -> Self

Create a new empty cursor store

pub fn declare(&mut self, stmt: &DeclareCursorStmt) -> Result<(), ExecutorError>

Declare a new cursor

pub fn open( &mut self, stmt: &OpenCursorStmt, db: &Database, ) -> Result<(), ExecutorError>

Open a cursor (execute query and materialize results)

pub fn fetch(&mut self, stmt: &FetchStmt) -> Result<FetchResult, ExecutorError>

Fetch from a cursor

pub fn close(&mut self, stmt: &CloseCursorStmt) -> Result<(), ExecutorError>

Close a cursor

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

Check if a cursor exists

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

Check if a cursor is open

pub fn count(&self) -> usize

Get the number of declared cursors

pub fn clear_non_holdable(&mut self)

Clear all non-holdable cursors (called on transaction commit/rollback)

pub fn clear(&mut self)

Clear all cursors

Trait Implementations

impl Debug for CursorStore

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

Formats the value using the given formatter.

impl Default for CursorStore

fn default() -> CursorStore

Returns the “default value” for a type.