Struct Row 

pub struct Row { /* private fields */ }

A row of values.

Rows are the unit of data flowing through execution operators. Each row contains values that correspond to the schema columns.

Implementations

impl Row

pub fn new(schema: Arc<Schema>, values: Vec<Value>) -> Self

Creates a new row with the given schema and values.

Panics

Panics if the number of values doesn’t match the schema.

pub fn single(name: impl Into<String>, value: Value) -> Self

Creates a row with a single value.

pub fn empty(schema: Arc<Schema>) -> Self

Creates an empty row with the given schema.

pub fn schema(&self) -> &Schema

Returns the schema of this row.

pub fn schema_arc(&self) -> Arc<Schema>

Returns the shared schema reference.

pub fn values(&self) -> &[Value]

Returns the values in this row.

pub fn len(&self) -> usize

Returns the number of columns.

pub fn is_empty(&self) -> bool

Returns true if the row has no columns.

pub fn get(&self, index: usize) -> Option<&Value>

Gets a value by column index.

pub fn get_by_name(&self, name: &str) -> Option<&Value>

Gets a value by column name.

pub fn get_mut(&mut self, index: usize) -> Option<&mut Value>

Gets a mutable value by column index.

pub fn set(&mut self, index: usize, value: Value) -> Option<Value>

Sets a value by column index.

Returns the old value if the index was valid.

pub fn project(&self, indices: &[usize]) -> Self

Creates a new row by projecting to specific column indices.

pub fn merge(&self, other: &Row) -> Self

Creates a new row by merging with another row.

pub fn merge_consume_left(self, other: &Row) -> Self

Consumes self and merges with another row’s values (borrowed). More efficient than merge when the left row can be consumed.

pub fn merge_consume_both(self, other: Row) -> Self

Consumes both rows and merges them. Most efficient merge operation when both rows can be consumed.

pub fn into_values(self) -> Vec<Value>

Consumes the row and returns the values.

pub fn to_map(&self) -> HashMap<String, Value>

Converts the row to a map of column names to values.

Trait Implementations

impl Clone for Row

fn clone(&self) -> Row

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Row

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

Formats the value using the given formatter.

impl IntoIterator for Row

type Item = (Arc<str>, Value)

The type of the elements being iterated over.

type IntoIter = Zip<IntoIter<Arc<str>>, IntoIter<Value>>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for Row

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Row