Struct CompactRow 

pub struct CompactRow { /* private fields */ }

A database result row whose column names are shared by the whole result set.

Providers use this representation for typed decoding so a 100-row result does not allocate 100 copies of every projected column name (or 100 B-trees).

Implementations

impl CompactRow

pub fn new(columns: Arc<[String]>, values: Vec<Value>) -> Self

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

pub fn shared_columns(&self) -> Arc<[String]>

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

pub fn insert(&mut self, name: String, value: Value) -> Option<Value>

Adds or replaces a projected value. Column layouts remain shared until an enhancement actually changes the shape of this row.

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

pub fn extend(&mut self, other: CompactRow)

pub fn contains_key(&self, name: &str) -> bool

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn iter(&self) -> impl Iterator<Item = (&String, &Value)>

pub fn keys(&self) -> impl Iterator<Item = &String>

pub fn values(&self) -> impl Iterator<Item = &Value>

pub fn into_map(self) -> BTreeMap<String, Value>

pub fn from_map(values_by_name: BTreeMap<String, Value>) -> Self

Transitional boundary adapter. Core query providers should construct compact rows directly instead of routing through this function.

Trait Implementations

impl Clone for CompactRow

fn clone(&self) -> CompactRow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompactRow

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

Formats the value using the given formatter.

impl From<BTreeMap<String, Value>> for CompactRow

fn from(values: BTreeMap<String, Value>) -> Self

Converts to this type from the input type.

impl PartialEq for CompactRow

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CompactRow