Struct QueryStore 

pub struct QueryStore { /* private fields */ }

In-memory storage for named queries.

Provides CRUD operations for managing named JMESPath queries within a session. Queries are stored by name and can be listed alphabetically.

Example

use jpx_engine::{QueryStore, StoredQuery};

let mut store = QueryStore::new();

// Add some queries
store.define(StoredQuery {
    name: "first".to_string(),
    expression: "@[0]".to_string(),
    description: None,
});

store.define(StoredQuery {
    name: "last".to_string(),
    expression: "@[-1]".to_string(),
    description: None,
});

// List them (alphabetically sorted)
let queries = store.list();
assert_eq!(queries[0].name, "first");
assert_eq!(queries[1].name, "last");

// Delete one
store.delete("first");
assert_eq!(store.len(), 1);

Implementations

impl QueryStore

pub fn new() -> Self

Creates a new empty query store.

pub fn define(&mut self, query: StoredQuery) -> Option<StoredQuery>

Stores a named query.

If a query with the same name already exists, it is replaced and the old query is returned.

Returns

Some(StoredQuery) if a query was replaced, None if this is a new name.

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

Retrieves a query by name.

Returns

Some(&StoredQuery) if found, None if no query has that name.

pub fn delete(&mut self, name: &str) -> Option<StoredQuery>

Removes a query by name.

Returns

Some(StoredQuery) containing the removed query, None if not found.

pub fn list(&self) -> Vec<&StoredQuery>

Lists all stored queries, sorted alphabetically by name.

pub fn len(&self) -> usize

Returns the number of stored queries.

pub fn is_empty(&self) -> bool

Returns true if no queries are stored.

pub fn clear(&mut self)

Removes all stored queries.

Trait Implementations

impl Debug for QueryStore

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

Formats the value using the given formatter.

impl Default for QueryStore

fn default() -> QueryStore

Returns the “default value” for a type.