Struct PreupdateHookResult

pub struct PreupdateHookResult<'a> {
    pub operation: SqliteOperation,
    pub database: &'a str,
    pub table: &'a str,
    /* private fields */
}

Available on crate feature _sqlite only.

Fields

operation: SqliteOperation

database: &'a str

table: &'a str

Implementations

impl<'a> PreupdateHookResult<'a>

pub fn get_column_count(&self) -> i32

Gets the amount of columns in the row being inserted, deleted, or updated.

pub fn get_query_depth(&self) -> i32

Gets the depth of the query that triggered the preupdate hook. Returns 0 if the preupdate callback was invoked as a result of a direct insert, update, or delete operation; 1 for inserts, updates, or deletes invoked by top-level triggers; 2 for changes resulting from triggers called by top-level triggers; and so forth.

pub fn get_old_row_id(&self) -> Result<i64, PreupdateError>

Gets the row id of the row being updated/deleted. Returns an error if called from an insert operation.

pub fn get_new_row_id(&self) -> Result<i64, PreupdateError>

Gets the row id of the row being inserted/updated. Returns an error if called from a delete operation.

pub fn get_old_column_value( &self, i: i32, ) -> Result<SqliteValueRef<'a>, PreupdateError>

Gets the value of the row being updated/deleted at the specified index. Returns an error if called from an insert operation or the index is out of bounds.

pub fn get_new_column_value( &self, i: i32, ) -> Result<SqliteValueRef<'a>, PreupdateError>

Gets the value of the row being inserted/updated at the specified index. Returns an error if called from a delete operation or the index is out of bounds.

Trait Implementations

impl<'a> Debug for PreupdateHookResult<'a>

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

Formats the value using the given formatter.