Struct QueryBuilder 

pub struct QueryBuilder<'a> { /* private fields */ }

Builder for constructing graph queries

Provides a fluent interface for filtering and traversing the memory graph.

Examples

use llm_memory_graph::{MemoryGraph, Config, query::QueryBuilder, NodeType};

let nodes = QueryBuilder::new(&graph)
    .session(session.id)
    .node_type(NodeType::Prompt)
    .limit(10)
    .execute()?;

Implementations

impl<'a> QueryBuilder<'a>

pub const fn new(graph: &'a MemoryGraph) -> Self

Create a new query builder

Examples

let query = QueryBuilder::new(&graph);

pub const fn session(self, session_id: SessionId) -> Self

Filter by session ID

Examples

let query = QueryBuilder::new(&graph).session(session.id);

pub const fn node_type(self, node_type: NodeType) -> Self

Filter by node type

Examples

let query = QueryBuilder::new(&graph).node_type(NodeType::Prompt);

pub const fn after(self, time: DateTime<Utc>) -> Self

Filter by start time (inclusive)

Examples

let query = QueryBuilder::new(&graph).after(Utc::now());

pub const fn before(self, time: DateTime<Utc>) -> Self

Filter by end time (inclusive)

Examples

let query = QueryBuilder::new(&graph).before(Utc::now());

pub const fn limit(self, limit: usize) -> Self

Limit the number of results

Examples

let query = QueryBuilder::new(&graph).limit(10);

pub const fn offset(self, offset: usize) -> Self

Skip the first N results (for pagination)

Examples

let query = QueryBuilder::new(&graph).offset(20).limit(10);

pub fn execute(&self) -> Result<Vec<Node>>

Execute the query and return matching nodes

Errors

Returns an error if:

• Storage retrieval fails
• The specified session doesn’t exist

Examples

let nodes = QueryBuilder::new(&graph)
    .session(session.id)
    .execute()?;