Struct rustdb::pstore::PageInfo

pub struct PageInfo {
    pub current: Option<Data>,
    pub history: BTreeMap<u64, Data>,
}

Cached information about a logical page.

Fields

current: Option<Data>

history: BTreeMap<u64, Data>

Implementations

impl PageInfo

pub fn new() -> PageInfoPtr

Construct a new PageInfo.

pub fn get(&mut self, lpnum: u64, a: &AccessPagedData) -> Data

Get the Data for the page, checking history if not a writer. Reads Data from file if necessary.

pub fn set(&mut self, time: u64, data: Data)

Set the page data, updating the history using the specified time and current data.