Struct BtreeStats 

pub struct BtreeStats {
    pub leaf_node_count: u64,
    pub deleted_leaf_node_count: u64,
    pub bottom_internal_node_count: u64,
    pub internal_node_count: u64,
    pub main_tree_max_depth: u32,
}

B-tree statistics for a single database.

Returned by Database::get_stats.

Implements BtreeStats with the most commonly used fields:

Field
leaf_node_count	getLNCount()
deleted_leaf_node_count	getDeletedLNCount()
bottom_internal_node_count	getBottomInternalNodeCount()
internal_node_count	getInternalNodeCount()
main_tree_max_depth	getMainTreeMaxDepth()

Fields

leaf_node_count: u64

Total number of leaf-node (LN) records in the tree. Equivalent to the approximate record count for the database.

deleted_leaf_node_count: u64

Number of known-deleted LN slots not yet compacted.

bottom_internal_node_count: u64

Number of Bottom Internal Nodes (BINs — leaf-level inner nodes).

internal_node_count: u64

Number of upper Internal Nodes (INs above BIN level).

main_tree_max_depth: u32

Maximum depth of the main tree (root-to-BIN path length).

Implementations

impl BtreeStats

pub fn get_leaf_node_count(&self) -> u64

Returns the total leaf-node record count (approximate).

pub fn get_deleted_leaf_node_count(&self) -> u64

Returns the count of known-deleted but not yet compacted slots.

pub fn get_bottom_internal_node_count(&self) -> u64

Returns the number of Bottom Internal Nodes.

pub fn get_internal_node_count(&self) -> u64

Returns the number of upper Internal Nodes.

pub fn get_main_tree_max_depth(&self) -> u32

Returns the maximum tree depth.

Trait Implementations

impl Clone for BtreeStats

fn clone(&self) -> BtreeStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BtreeStats

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

Formats the value using the given formatter.

impl Default for BtreeStats

fn default() -> BtreeStats

Returns the “default value” for a type.