Struct BlockMetadata 

pub struct BlockMetadata {
    pub block_id: u32,
    pub column_name: String,
    pub row_count: u64,
    pub min_value: Option<String>,
    pub max_value: Option<String>,
    pub null_count: u64,
    pub size_bytes: u64,
    pub compressed_size_bytes: u64,
}

Block-level metadata

Fields

block_id: u32

column_name: String

row_count: u64

min_value: Option<String>

max_value: Option<String>

null_count: u64

size_bytes: u64

compressed_size_bytes: u64

Implementations

impl BlockMetadata

pub fn new( block_id: u32, column_name: String, row_count: u64, size_bytes: u64, ) -> Self

Create new block metadata

pub fn with_range(self, min: Option<String>, max: Option<String>) -> Self

Set min/max values

pub fn with_null_count(self, count: u64) -> Self

Set null count

pub fn with_compressed_size(self, size: u64) -> Self

Set compressed size

pub fn can_skip_for_range(&self, lower: &str, upper: &str) -> bool

Can this block be skipped based on predicate?

pub fn compression_ratio(&self) -> f64

Compression ratio

Trait Implementations

impl Clone for BlockMetadata

fn clone(&self) -> BlockMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockMetadata

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

Formats the value using the given formatter.