Struct ResultSet 

pub struct ResultSet { /* private fields */ }

A query result: named columns and rows of values.

Beside the rows it may carry three things no renderer has to read: the EntityKind of each bare-variable column, the Entity behind each of their cells (only when asked for), and a write’s WriteStats. Equality compares the columns and rows alone, the table every surface renders.

Implementations

impl ResultSet

pub fn new(columns: Vec<String>) -> Self

pub fn push_row(&mut self, row: Vec<Option<Value>>)

pub fn columns(&self) -> &[String]

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn row(&self, i: usize) -> &[Option<Value>]

Panics — if i >= self.len().

pub fn get(&self, i: usize, col: &str) -> Option<&Value>

pub fn column_kind(&self, col: usize) -> Option<EntityKind>

The kind of column col, when it is a bare graph variable.

pub fn column_kinds(&self) -> &[Option<EntityKind>]

The kind of every column, in column order.

pub fn set_column_kinds(&mut self, kinds: Vec<Option<EntityKind>>)

Set the kind of every column. Extra entries are dropped and missing ones are None, so the list always matches the columns.

pub fn entity(&self, row: usize, col: usize) -> Option<&Entity>

The graph element behind cell (row, col), when entity details were attached and the cell holds one.

pub fn has_entities(&self) -> bool

Whether entity details are attached.

pub fn set_entities(&mut self, entities: Vec<Option<Entity>>)

Attach the graph element behind each cell, row-major.

Panics — if entities.len() is not len() * columns().len().

pub fn value_entity_tree( &self, row: usize, col: usize, ) -> Option<&ValueEntityTree>

The resolved entity tree for cell (row, col), when entity details were attached for a column that holds a computed value with embedded graph elements (a map, a mixed list, head(collect(n)), etc.).

pub fn stats(&self) -> Option<&WriteStats>

What the write statement that produced this result changed.

pub fn with_stats(self, stats: WriteStats) -> Self

Record what the write statement that produced this result changed.

Trait Implementations

impl Clone for ResultSet

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ResultSet

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

Formats the value using the given formatter.

impl PartialEq for ResultSet

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

Equality operator ==.

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

Inequality operator !=.