Struct SegmentMeta 

pub struct SegmentMeta {
    pub path: String,
    pub format: FileFormat,
    pub entity_layout: SegmentEntityLayout,
    pub index_min: IndexValue,
    pub index_max: IndexValue,
    pub row_count: u64,
    pub file_size: Option<u64>,
    pub coverage_path: Option<String>,
}

Metadata about a single physical segment.

In v0.1, a “segment” corresponds to one stored data object.

Fields

path: String

Canonical file path relative to the table root and the segment identity.

format: FileFormat

File format for this segment.

entity_layout: SegmentEntityLayout

Exact entity distribution derived before the segment is committed.

index_min: IndexValue

Minimum observed ordered-index value in this segment (inclusive).

index_max: IndexValue

Maximum observed ordered-index value in this segment (inclusive).

row_count: u64

Number of rows in this segment.

file_size: Option<u64>

Optional file size in bytes at the time metadata was captured.

coverage_path: Option<String>

Coverage sidecar pointer.

Implementations

impl SegmentMeta

pub fn with_coverage_path(self, path: impl Into<String>) -> Self

Set the coverage sidecar path for this segment metadata.

pub fn validate_bounds(&self, kind: &IndexKind) -> Result<(), SegmentMetaError>

Validate the segment’s inclusive ordered-index bounds.

Errors

Returns SegmentMetaError::InvalidIndexBounds when either bound has the wrong domain or the minimum is greater than the maximum.

Trait Implementations

impl Clone for SegmentMeta

fn clone(&self) -> SegmentMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SegmentMeta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SegmentMeta

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SegmentMeta

impl PartialEq for SegmentMeta

fn eq(&self, other: &SegmentMeta) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for SegmentMeta

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SegmentMeta