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: ByteStorage,
    pub schemas: RefCell<HashMap<String, i64>>,
    pub tables: RefCell<HashMap<ObjRef, TablePtr>>,
    pub functions: RefCell<HashMap<ObjRef, FunctionPtr>>,
    pub builtins: RefCell<HashMap<String, (DataKind, CompileFunc)>>,
    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: ByteStorage

Storage of variable length data.

schemas: RefCell<HashMap<String, i64>>

tables: RefCell<HashMap<ObjRef, TablePtr>>

functions: RefCell<HashMap<ObjRef, FunctionPtr>>

builtins: RefCell<HashMap<String, (DataKind, CompileFunc)>>

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) -> DB

Construct a new DB, based on the specified file.

pub fn register(self: &DB, name: &str, typ: DataKind, cf: CompileFunc)

Register a builtin function.

pub fn run(self: &DB, source: &str, qy: &mut dyn Query)

Run a batch of SQL.

pub fn run_timed(self: &DB, source: &str, qy: &mut dyn Query)

Run a batch of SQL, printing the execution time.

pub fn go(self: &DB, source: &str, qy: &mut dyn Query) -> Option<SqlError>

Run a batch of SQL.

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.

pub fn get_function(self: &DB, name: &ObjRef) -> Option<FunctionPtr>

Get the named function.

pub fn publish_table(&self, table: TablePtr)

Insert the table into the map of tables.

pub fn encode(self: &DB, val: &Value) -> u64

Get code for value.

pub fn decode(self: &DB, code: u64) -> Vec<u8>

Decode u64 to bytes.

pub fn delcode(self: &DB, code: u64)

Delete encoding.

pub fn alloc_page(self: &DB) -> u64

Allocate a page of underlying file storage.

pub fn free_page(self: &DB, lpnum: u64)

Free a page of underyling file storage.

Trait Implementations

impl Drop for Database

fn drop(&mut self)

Clear function instructions to avoid leaking memory.