Trait eosio_cdt::TableCursor

pub trait TableCursor<T>: IntoIterator where
    T: Table, {
    fn get(&self) -> Result<T::Row, ReadError>;
    fn erase(&self) -> Result<T::Row, ReadError>;
    fn modify<I: Borrow<T::Row>>(
        &self, 
        payer: Payer, 
        item: I
    ) -> Result<usize, WriteError>;
}

Table Cursor

Required methods

fn get(&self) -> Result<T::Row, ReadError>

Read and deserialize the current table row

Errors

Will return Err if there was an issue reading the stored value.

fn erase(&self) -> Result<T::Row, ReadError>

Erase the current row

Errors

Will return Err if there was an issue reading the stored value. Stored values must be read in order to erase secondary indexes.

fn modify<I: Borrow<T::Row>>(
    &self,
    payer: Payer,
    item: I
) -> Result<usize, WriteError>

Modify the current row

Errors

Will return Err if there was an issue serializing the value.

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Implementors

impl<'a, K, T> TableCursor<T> for SecondaryTableCursor<'a, K, T> where
    K: IntoNativeSecondaryKey,
    T: Table, 

fn get(&self) -> Result<T::Row, ReadError>

fn erase(&self) -> Result<T::Row, ReadError>

fn modify<I: Borrow<T::Row>>(
    &self,
    payer: Payer,
    item: I
) -> Result<usize, WriteError>

impl<T> TableCursor<T> for PrimaryTableCursor<T> where
    T: Table, 

fn get(&self) -> Result<T::Row, ReadError>

fn erase(&self) -> Result<T::Row, ReadError>

fn modify<I: Borrow<T::Row>>(
    &self,
    payer: Payer,
    item: I
) -> Result<usize, WriteError>

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