Optimize db.clear()

Ref Level/community#79
Level · Oct 1, 2021 · 47e0137 · 47e0137
1 parent 90bde9d
commit 47e0137
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Showing 4 changed files with 453 additions and 198 deletions.
diff --git a/leveldown.js b/leveldown.js
@@ -14,7 +14,8 @@ const ENCODERS = [
   messages.Put,
   messages.Delete,
   messages.Batch,
-  messages.Iterator
+  messages.Iterator,
+  messages.Clear
 ]
 
 const DECODERS = [
@@ -217,6 +218,20 @@ Multilevel.prototype._batch = function (batch, opts, cb) {
   this._write(req)
 }
 
+Multilevel.prototype._clear = function (opts, cb) {
+  if (this._db) return this._db._clear(opts, cb)
+
+  const req = {
+    tag: 5,
+    id: 0,
+    options: opts,
+    callback: cb || noop
+  }
+
+  req.id = this._requests.add(req)
+  this._write(req)
+}
+
 Multilevel.prototype._write = function (req) {
   if (this._requests.length + this._iterators.length === 1) ref(this._ref)
   const enc = ENCODERS[req.tag]