Struct GraphExtractor 

pub struct GraphExtractor { /* private fields */ }

Implementations

impl GraphExtractor

pub fn new( provider: AnyProvider, max_entities: usize, max_edges: usize, llm_timeout_secs: u64, ) -> Self

pub fn with_system_prompt(self, prompt: &'static str) -> Self

Override the system prompt used during extraction.

The default (when None) is the built-in conversational SYSTEM_PROMPT. Pass Some(prompt) to select an alternative prompt such as crate::graph::ingest::prompt::TECH_DOC_SYSTEM_PROMPT.

The type is &'static str — prompts must be compile-time constants. This is a known MVP limitation (spec-067 critic C7); runtime-configurable prompts will require a breaking change to this signature.

pub async fn extract( &self, message: &str, context_messages: &[&str], ) -> Result<Option<ExtractionResult>, MemoryError>

Extract entities and relations from a message with surrounding context.

Returns None if the message is empty, extraction fails, or the LLM returns unparseable output. Callers should treat None as a graceful degradation.

Errors

Returns an error only for transport-level failures (network, auth). JSON parse failures are logged and return Ok(None).