Struct mtbl::WriterOptions

pub struct WriterOptions {
    pub compression: Option<CompressionType>,
    pub block_size: Option<usize>,
    pub block_restart_interval: Option<usize>,
}

Options for writing an MTBL file.

Examples

let writer = WriterOptions::new()
                 .compression(CompressionType::MTBL_COMPRESSION_SNAPPY)
                 .create_from_path("/tmp/f.mtbl");

Fields

compression: Option<CompressionType>

What compression type to use. Default is to use zlib.

block_size: Option<usize>

What block size to use, in bytes. Default is 8 KiB.

block_restart_interval: Option<usize>

How often, in keys, to restart intra-block key prefix compression. Default is every 16 keys.

Methods

impl WriterOptions

fn new() -> WriterOptions

Create new options with only defaults.

fn compression(&self, compression: CompressionType) -> WriterOptions

Create a new options with compression type set.

fn block_size(&self, block_size: usize) -> WriterOptions

Create a new options with block size set.

fn block_restart_interval(&self, block_restart_interval: usize) -> WriterOptions

Create a new options with block restart interval set.

fn create_from_path<T: AsRef<Path>>(&self, path: T) -> IOResult<Writer>

Create a new Writer using these options, at a given path.

fn create_from_file<T: 'static + AsRawFd>(&self, file: T) -> IOResult<Writer>

Create a new Writer using these options, with a given File.

Trait Implementations

impl Clone for WriterOptions

fn clone(&self) -> WriterOptions

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for WriterOptions