Struct Cursor

pub struct Cursor { /* private fields */ }

Implementations

impl Cursor

pub fn next(&mut self) -> Result<(Option<DBT<'_>>, Option<DBT<'_>>), Error>

Iterate over key/data pairs in the database.

Examples

use libdb::Flags;
// Note: BDB requires that the key and value be mutable.
let mut key   = String::from("key").into_bytes();
let mut value = String::from("value").into_bytes();
let ret = db.put(None, key.as_mut_slice(), value.as_mut_slice(), Flags::DB_NONE);
assert!(ret.is_ok());

// get cursor and iterate
let mut cursor = db.cursor().expect("Failed to get cursor");
let (key_dbt, data_dbt) = cursor.next().expect("Could not walk cursor");
    assert_eq!("key", str::from_utf8(key_dbt.unwrap().as_slice()).unwrap());
    assert_eq!("value", str::from_utf8(data_dbt.unwrap().as_slice()).unwrap());