simplify fulltext keys to just be values

ratel/deleteevent.go

@@ -22,7 +22,7 @@ import (
 // requested not to, so that the event can't be saved again.
 func (r *T) DeleteEvent(c context.T, eid *eventid.T, noTombstone ...bool) (err error) {
 	var foundSerial []byte
-	seri := serial.New(nil)
+	ser := serial.New(nil)
 	err = r.View(func(txn *badger.Txn) (err error) {
 		// query event by id to ensure we don't try to save duplicates
 		prf := prefixes.Id.Key(id.New(eid))
@@ -34,9 +34,9 @@ func (r *T) DeleteEvent(c context.T, eid *eventid.T, noTombstone ...bool) (err e
 			// get the serial
 			k = it.Item().Key()
 			// copy serial out
-			keys.Read(k, index.Empty(), id.New(&eventid.T{}), seri)
+			keys.Read(k, index.Empty(), id.New(&eventid.T{}), ser)
 			// save into foundSerial
-			foundSerial = seri.Val
+			foundSerial = ser.Val
 		}
 		return
 	})
@@ -49,10 +49,11 @@ func (r *T) DeleteEvent(c context.T, eid *eventid.T, noTombstone ...bool) (err e
 	var indexKeys [][]byte
 	ev := event.New()
 	var evKey, evb, tombstoneKey []byte
+	var w, l [][]byte
 	// fetch the event to get its index keys
 	err = r.View(func(txn *badger.Txn) (err error) {
 		// retrieve the event record
-		evKey = keys.Write(index.New(prefixes.Event), seri)
+		evKey = keys.Write(index.New(prefixes.Event), ser)
 		it := txn.NewIterator(badger.IteratorOptions{})
 		defer it.Close()
 		it.Seek(evKey)
@@ -63,7 +64,9 @@ func (r *T) DeleteEvent(c context.T, eid *eventid.T, noTombstone ...bool) (err e
 			if _, err = r.Unmarshal(ev, evb); chk.E(err) {
 				return
 			}
-			indexKeys = GetIndexKeysForEvent(ev, seri)
+			indexKeys = GetIndexKeysForEvent(ev, ser)
+			indexKeys = append(indexKeys, r.GetFulltextKeys(ev, ser)...)
+			indexKeys = append(indexKeys, r.GetLangKeys(ev, ser)...)
 			// we don't make tombstones for replacements, but it is better to shift that
 			// logic outside of this closure.
 			if len(noTombstone) > 0 && !noTombstone[0] {
@@ -77,6 +80,8 @@ func (r *T) DeleteEvent(c context.T, eid *eventid.T, noTombstone ...bool) (err e
 	if chk.E(err) {
 		return
 	}
+	_, _ = w, l
+
 	err = r.Update(func(txn *badger.Txn) (err error) {
 		if err = txn.Delete(evKey); chk.E(err) {
 		}

ratel/fulltext.go

@@ -28,36 +28,12 @@ func (r *T) WriteFulltextIndex(w *Words) (err error) {
 	}
 	r.WG.Add(1)
 	defer r.WG.Done()
-	// log.I.F("making fulltext index for %d", w.ser.Uint64())
 	for i := range w.wordMap {
 	retry:
 		if err = r.Update(func(txn *badger.Txn) (err error) {
-			prf := prefixes.FulltextIndex.Key(arb.New(i))
-			var item2 *badger.Item
-			if item2, err = txn.Get(prf); err != nil {
-				// make a new record
-				if err = txn.Set(prf, w.ser.Val); chk.E(err) {
-					return
-				}
-			} else {
-				if item2.KeySize() == int64(len(prf)) {
-					select {
-					case <-r.Ctx.Done():
-						return
-					default:
-					}
-					var val2 []byte
-					if val2, err = item2.ValueCopy(nil); chk.E(err) {
-						return
-					}
-					if !bytes.Contains(val2, w.ser.Val) {
-						val2 = append(val2, w.ser.Val...)
-						if err = txn.Set(prf, val2); chk.E(err) {
-							return
-						}
-					}
-					return
-				}
+			key := prefixes.FulltextIndex.Key(arb.New(i), w.ser)
+			if err = txn.Set(key, nil); chk.E(err) {
+				return
 			}
 			return
 		}); chk.E(err) {
@@ -67,6 +43,15 @@ func (r *T) WriteFulltextIndex(w *Words) (err error) {
 	return
 }
 
+func (r *T) GetFulltextKeys(ev *event.T, ser *serial.T) (keys [][]byte) {
+	w := r.GetWordsFromContent(ev)
+	for i := range w {
+		key := prefixes.FulltextIndex.Key(arb.New(i), ser)
+		keys = append(keys, key)
+	}
+	return
+}
+
 func (r *T) GetWordsFromContent(ev *event.T) (wordMap map[string]struct{}) {
 	wordMap = make(map[string]struct{})
 	if ev.Kind.IsText() {

ratel/langindex.go

@@ -49,6 +49,15 @@ retry:
 	return
 }
 
+func (r *T) GetLangKeys(ev *event.T, ser *serial.T) (keys [][]byte) {
+	langs := r.GetLangTags(ev)
+	for _, v := range langs {
+		key := prefixes.LangIndex.Key(lang.New(v), ser)
+		keys = append(keys, key)
+	}
+	return
+}
+
 func (r *T) GetLangTags(ev *event.T) (langs []string) {
 	if ev.Kind.IsText() {
 		tgs := ev.Tags.GetAll(tag.New("l"))

ratel/prefixes/prefixes.go

@@ -117,8 +117,10 @@ const (
 	Configuration
 
 	// FulltextIndex is an inverted index that maps a search term to the events it is found in.
+	// The keys are written with the word and serial to make handling them easier, even though
+	// it's a little bigger, it's much faster to search, which is what matters.
 	//
-	// [ 15 ][ word ] [ array of serials of events containing the word ]
+	// [ 15 ][ word ][ serial ]
 	FulltextIndex
 
 	// LangIndex is an index of events with language tags. These use ISO639-2 3-letter codes