Struct IndexManager 

pub struct IndexManager { /* private fields */ }

索引管理器

Implementations

impl IndexManager

pub fn new() -> Self

pub fn create_index(&mut self, table: &str, columns: &[&str])

为表列创建索引（支持复合索引）

pub fn create_unique_index(&mut self, table: &str, columns: &[&str])

创建唯一索引

pub fn drop_index(&mut self, table: &str, columns: &[&str]) -> bool

删除索引

pub fn has_index(&self, table: &str, column: &str) -> bool

检查列是否有索引（单列检查）

pub fn has_composite_index(&self, table: &str, columns: &[&str]) -> bool

检查复合索引是否存在

pub fn get_index(&self, table: &str, column: &str) -> Option<&BTreeIndex>

获取索引（不可变引用，单列）

pub fn get_composite_index( &self, table: &str, columns: &[&str], ) -> Option<&BTreeIndex>

获取复合索引（不可变引用）

pub fn get_index_mut( &mut self, table: &str, column: &str, ) -> Option<&mut BTreeIndex>

获取索引（可变引用，单列）

pub fn get_composite_index_mut( &mut self, table: &str, columns: &[&str], ) -> Option<&mut BTreeIndex>

获取复合索引（可变引用）

pub fn get_table_indexes(&self, table: &str) -> Vec<&IndexMeta>

获取表的所有索引元数据

pub fn drop_table_indexes(&mut self, table: &str)

删除表的所有索引

pub fn find_best_index( &self, table: &str, filter_columns: &[&str], ) -> Option<(&IndexMeta, &BTreeIndex)>

查找适合给定列的最佳索引（用于查询优化）

Trait Implementations

impl Debug for IndexManager

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

Formats the value using the given formatter.

impl Default for IndexManager

fn default() -> Self

Returns the “default value” for a type.