Struct rustdb::Database

pub struct Database {

    pub file: AccessPagedData,
    pub sys_schema: TablePtr,
    pub sys_table: TablePtr,
    pub sys_column: TablePtr,
    pub sys_index: TablePtr,
    pub sys_index_col: TablePtr,
    pub sys_function: TablePtr,
    pub bs: Vec<ByteStorage>,
    pub schemas: RefCell<HashMap<String, i64>>,
    pub tables: RefCell<HashMap<ObjRef, TablePtr>>,
    pub functions: RefCell<HashMap<ObjRef, FunctionPtr>>,
    pub builtins: Arc<BuiltinMap>,
    pub function_reset: Cell<bool>,
    pub lastid: Cell<i64>,
    pub err: Cell<bool>,
}

Database with SQL-like interface.

Fields

file: AccessPagedData

Page storage.

sys_schema: TablePtr

sys_table: TablePtr

sys_column: TablePtr

sys_index: TablePtr

sys_index_col: TablePtr

sys_function: TablePtr

bs: Vec<ByteStorage>

Storage of variable length data.

schemas: RefCell<HashMap<String, i64>>

tables: RefCell<HashMap<ObjRef, TablePtr>>

functions: RefCell<HashMap<ObjRef, FunctionPtr>>

builtins: Arc<BuiltinMap>

function_reset: Cell<bool>

Flag to reset the functions cache after save.

lastid: Cell<i64>

Last id generated by INSERT.

err: Cell<bool>

Has there been an error since last save?

Implementations

impl Database

pub fn new(
    file: AccessPagedData,
    initsql: &str,
    builtins: Arc<BuiltinMap>
) -> DB

Construct a new DB, based on the specified file. initsql is used to initialised a new database. builtins specifies the functions callable in SQL code such as SUBSTR, REPLACE etc.

pub fn run(self: &DB, source: &str, tr: &mut dyn Transaction)

Run a batch of SQL.

pub fn run_timed(self: &DB, source: &str, tr: &mut dyn Transaction)

Run a batch of SQL, printing the execution time.

pub fn save(self: &DB) -> usize

Save updated tables to underlying file ( or rollback if there was an error ). Returns the number of logical pages that were updated.

pub fn get_table(self: &DB, name: &ObjRef) -> Option<TablePtr>

Get the named table.

Trait Implementations

impl Drop for Database

fn drop(&mut self)

Clear function instructions to avoid leaking memory.