Enum CardSelection 

pub enum CardSelection {
    EntityMentions,
    RecentCards,
    ForPrincipal(String),
    PreferencesFor(Vec<String>),
}

Strategy for choosing which memory cards to surface as context.

Each variant resolves a query into a list of cards using only the local store — no LLM, no NER. Build your own MemoryCardContext implementation if you need fancier extraction.

Variants

EntityMentions

Pull cards for entities whose names appear (case-insensitive, word-boundary-aware) in the query string. Cheap, deterministic, and zero-dependency. The default and the right choice for most chatbots.

RecentCards

Always include the most recently-written cards, ignoring the query entirely. Useful as a “what does the agent know about the user right now” preamble that doesn’t depend on lexical overlap.

ForPrincipal(String)

Always include cards for the named principal/entity, ignoring the query text. This is useful for personal assistants where follow-up questions often say “what should I avoid?” without repeating the user’s name.

PreferencesFor(Vec<String>)

Always include preference-kind cards for the listed entities. Combine with Self::EntityMentions in your own selection strategy if you need both.

Trait Implementations

impl Clone for CardSelection

fn clone(&self) -> CardSelection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CardSelection

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

Formats the value using the given formatter.

impl Default for CardSelection

fn default() -> CardSelection

Returns the “default value” for a type.