Struct GroupPath 

pub struct GroupPath(/* private fields */);

A group’s identity: the id of each level (a column’s ColumnId or a GroupKey id) with the group’s key value there, from the top level down. Never positions, so a group keeps its identity across rebuilds, sorts and snapshots.

The empty path is the root: it names no group and has no caption. Cloning is O(1).

Implementations

impl GroupPath

pub fn new(levels: impl IntoIterator<Item = (ColumnId, OwnedValue)>) -> Self

The path of these levels, the top level first.

pub fn depth(&self) -> u16

The depth of the group the path names: 0 for a top-level group, one more per level below. The root reads 0 too; Self::is_root tells it apart.

pub fn is_root(&self) -> bool

Returns true for the empty path, the root.

pub fn levels(&self) -> &[(ColumnId, OwnedValue)]

The levels, the top level first.

pub fn level_id(&self, depth: u16) -> Option<&ColumnId>

The id of the level at depth.

pub fn value(&self, depth: u16) -> Option<&OwnedValue>

The key value at depth.

pub fn parent(&self) -> Option<GroupPath>

The path of the enclosing group: the root for a top-level group, None for the root.

pub fn starts_with(&self, other: &GroupPath) -> bool

Returns true if other is this path or one of its ancestors.

Trait Implementations

impl Clone for GroupPath

fn clone(&self) -> GroupPath

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroupPath

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

Formats the value using the given formatter.

impl Default for GroupPath

fn default() -> GroupPath

Returns the “default value” for a type.

impl Hash for GroupPath

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GroupPath

fn eq(&self, other: &GroupPath) -> 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 Eq for GroupPath

impl StructuralPartialEq for GroupPath