Struct CompressionMask

pub struct CompressionMask(/* private fields */);

A mask of page classes for compression.

This structure is only used when the in-memory database compression is enabled.

Examples

Enable compression of object and blob header pages:

let mut mask = CompressionMask::new();
mask.obj_head(true).blob_head(true);

Implementations

impl CompressionMask

pub fn new() -> Self

Creates a new compression mask filled with zeroes.

pub fn obj_head(&mut self, v: bool) -> &mut Self

Enables compression of object header pages.

pub fn get_obj_head(&self) -> bool

Returns the current flag value.

pub fn obj_node(&mut self, v: bool) -> &mut Self

Enables compression of object node pages.

pub fn get_obj_node(&self) -> bool

Returns the current flag value.

pub fn blob_head(&mut self, v: bool) -> &mut Self

Enables compression of blob header pages.

pub fn get_blob_head(&self) -> bool

Returns the current flag value.

pub fn blob_tail(&mut self, v: bool) -> &mut Self

Enables compression of blob tail pages.

pub fn get_blob_tail(&self) -> bool

Returns the current flag value.

pub fn fixed_rec_set(&mut self, v: bool) -> &mut Self

Enables compression of fixed record pages.

pub fn get_fixed_rec_set(&self) -> bool

Returns the current flag value.