Struct ComputedDataView 

pub struct ComputedDataView { /* private fields */ }

A view over a DataTable that can contain both original and computed columns This is query-scoped - exists only for the duration of one query result

Implementations

impl ComputedDataView

pub fn new( source_table: Arc<DataTable>, columns: Vec<ViewColumn>, visible_rows: Vec<usize>, ) -> Self

Create a new computed view with specified columns and visible rows

pub fn row_count(&self) -> usize

Get the number of visible rows

pub fn column_count(&self) -> usize

Get the number of columns (original + derived)

pub fn column_names(&self) -> Vec<String>

Get column names

pub fn get_value(&self, row_idx: usize, col_idx: usize) -> Option<DataValue>

Get a value at a specific row and column

pub fn get_row_values(&self, row_idx: usize) -> Option<Vec<DataValue>>

Get all values for a row

pub fn source_table(&self) -> &Arc<DataTable>

Get the underlying source table (for reference, not modification)

pub fn visible_rows(&self) -> &[usize]

Get the visible row indices (useful for debugging)

pub fn is_derived_column(&self, col_idx: usize) -> bool

Check if a column is derived

pub fn from_source_all_columns(source: Arc<DataTable>) -> Self

Create a simple view showing all columns from source (no computations)

pub fn with_filtered_rows(self, row_indices: Vec<usize>) -> Self

Create a view with filtered rows (WHERE clause applied)

Trait Implementations

impl Clone for ComputedDataView

fn clone(&self) -> ComputedDataView

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComputedDataView

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

Formats the value using the given formatter.