Struct optra::InsertOperation

pub struct InsertOperation {
    // some fields omitted
}

Represents an operation which inserts data into a file

Methods

impl InsertOperation

fn new(position: u64, value: Vec<u8>, timestamp: u32, site_id: u32) -> InsertOperation

Creates a new InsertOperation that will insert the bytes represented by value in a file at location position

fn get_value(&self) -> &[u8]

Gets the bytes that will be inserted when this operation is applied

fn compress_to<W: Write>(&self, writer: &mut W, include_site_id: bool) -> Result<()>

Compress this operation and write to writer. The output can then be expanded back into an equivilent operation using expand_from(). If include_site_id is set to true Then the site id is saved alongside everyhting else. If this is the case, then when expanding a timestamp lookup should not be passed in.

fn expand_from<R: Read>(reader: &mut R, timestamp_lookup: Option<&BTreeMap<u32, (u32, u32)>>) -> Result<InsertOperation>

Expand this operation from previously compressed data in reader. The data in reader should have been written using compress_to()

Trait Implementations

impl Clone for InsertOperation

fn clone(&self) -> InsertOperation

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Eq for InsertOperation

impl PartialEq for InsertOperation

fn eq(&self, __arg_0: &InsertOperation) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &InsertOperation) -> bool

This method tests for !=.

impl Operation for InsertOperation

fn get_position(&self) -> u64

Gets the position this operation will be perfomed at

fn get_increment(&self) -> i64

Gets the size change this operation will perform. For insert operations, it's the length of the data they will insert. For delete operations, it's the length of the data they will delete

fn get_timestamp(&self) -> u32

Gets the current local timestamp of this operation

fn set_timestamp(&mut self, new_timestamp: u32)

Sets the local timestamp of this operation

impl Debug for InsertOperation

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

Formats the value using the given formatter.