Struct rust_chain::db::TableI64

pub struct TableI64<T> where
    T: Packer + PrimaryValueInterface + Default, {
    pub code: u64,
    pub scope: u64,
    pub table: u64,
    /* private fields */
}

Fields

code: u64

scope: u64

table: u64

Implementations

impl<T> TableI64<T> where
    T: Packer + PrimaryValueInterface + Default, 

pub fn new(code: Name, scope: Name, table: Name) -> Self

Creates a new TableI64 instance

pub fn store(&self, value: &T, payer: Name) -> Iterator<'_, T>

pub fn find(&self, key: u64) -> Iterator<'_, T>

pub fn update(&self, iterator: &Iterator<'_, T>, value: &T, payer: Name)

pub fn remove(&self, iterator: &Iterator<'_, T>)

remove value from database by iterator

pub fn get(&self, iterator: &Iterator<'_, T>) -> Option<T>

get value by iterator. use Iterator::get_value for a more convenient way.

pub fn next(&self, iterator: &Iterator<'_, T>) -> Iterator<'_, T>

get next iterator

pub fn previous(&self, iterator: &Iterator<'_, T>) -> Iterator<'_, T>

get previous iterator

pub fn lower_bound(&self, key: u64) -> Iterator<'_, T>

return a iterator with a key >= key

pub fn upper_bound(&self, key: u64) -> Iterator<'_, T>

return a iterator with a key > key

pub fn end(&self) -> Iterator<'_, T>

Return an end iterator, Iterator.is_end() return true if it’s a valid end iterator. This method is often used with TableI64.previous to get the last iterator.

let mut it = db.end();
if it.is_end() {
    it = db.previous();
    //...
}