precept.listeners
all-listeners
(all-listeners session)Returns all listener instances or empty list if none.
append-trace
(append-trace listener event)Appends a trace event and returns a new listener with it.
check-retract-facts-logical-failure
(check-retract-facts-logical-failure facts)create-devtools-listeners
(create-devtools-listeners ch *event-coords initial-trace)Returns Clara DelegatingListener that sends listener events through a PersistentFactListener and PersistentSessionEventMessanger constructed with the supplied arguments. - initial-trace - vector or nil. Passed to fact listener. Defaults to []. - `ch - core.async channel that PersistentSessionEventMessenger will put events to ` *event-coords - atom with keys :event-number, :state-number, :state-id. :event-number updated within SessionEventMessenger methods.
create-fact-listener
(create-fact-listener)(create-fact-listener initial-trace)deconstruct-node-token
(deconstruct-node-token node token)diff-ops
(diff-ops ops)Returns net result of session changes in order to eliminate ordinal significance of add/remove mutations to view-model
explain-insert-facts
(explain-insert-facts node token facts)fact-traces
(fact-traces session)Returns [[]…]. List of fact events for each fact listener in the session.
get-fact-match-or-matches
(get-fact-match-or-matches matches)handle-event!
(handle-event! ch *event-coords type node token facts)insertions
(insertions trace-by-type)list-facts
(list-facts xs)ops
(ops session)Returns :added, :removed results. Assumes a single fact listener in the vector of session’s :listeners that may be a child of a PersistentDelegatingListener.
replace-listener
(replace-listener session)(replace-listener session listener)Removes and adds listener(s) from session. When called with session only adds PersistentFactListener with initial state of [].
retractions
(retractions trace-by-type)split-matches-and-tokens
(split-matches-and-tokens matches)Splits matches into vector of facts, tokens
split-ops
(split-ops trace)Takes trace returned by Clara’s get-trace. Returns m of :added, :removed
to-transient-fact-listener
(to-transient-fact-listener listener)to-transient-session-event-messenger
(to-transient-session-event-messenger listener)trace-by-type
(trace-by-type trace)vec-ops
(vec-ops session)Takes a session with a FactListener and returns the result of the trace as {:added [vector tuples] :removed [vector tuples]}
vectorize-trace
(vectorize-trace trace)