Struct ReadSet 

pub struct ReadSet {
    pub tables: HashSet<String>,
    pub rows: HashMap<String, HashSet<Uuid>>,
    pub filter_columns: HashMap<String, HashSet<String>>,
    pub mode: TrackingMode,
}

Read set tracking tables and rows read during query execution.

Fields

tables: HashSet<String>

Tables accessed.

rows: HashMap<String, HashSet<Uuid>>

Specific rows read per table.

filter_columns: HashMap<String, HashSet<String>>

Columns used in filters.

mode: TrackingMode

Tracking mode used.

Implementations

impl ReadSet

pub fn new() -> Self

Create a new empty read set.

pub fn table_level() -> Self

Create a read set with table-level tracking.

pub fn row_level() -> Self

Create a read set with row-level tracking.

pub fn add_table(&mut self, table: impl Into<String>)

Add a table to the read set.

pub fn add_row(&mut self, table: impl Into<String>, row_id: Uuid)

Add a row to the read set.

pub fn add_filter_column( &mut self, table: impl Into<String>, column: impl Into<String>, )

Add a filter column.

pub fn includes_table(&self, table: &str) -> bool

Check if this read set includes a specific table.

pub fn includes_row(&self, table: &str, row_id: Uuid) -> bool

Check if this read set includes a specific row.

pub fn memory_bytes(&self) -> usize

Estimate memory usage in bytes.

pub fn row_count(&self) -> usize

Get total row count tracked.

pub fn merge(&mut self, other: &ReadSet)

Merge another read set into this one.

Trait Implementations

impl Clone for ReadSet

fn clone(&self) -> ReadSet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadSet

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

Formats the value using the given formatter.

impl Default for ReadSet

fn default() -> ReadSet

Returns the “default value” for a type.