Clear out DB before importing

Cargo.lock

@@ -102,7 +102,7 @@ checksum = "fad582f4b9e86b6caa621cabeb0963332d92eea04729ab12892c2533951e6440"
 
 [[package]]
 name = "j_db"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "byteorder",
  "json",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "j_db"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Joey Hines <joey@ahines.net>"]
 edition = "2021"
 description = "A good enough (TM) embedded Rust DB* and ORM*"

src/database.rs

@@ -217,6 +217,7 @@ impl Database {
     }
 
     pub fn import_db(&self, json: JsonValue) -> Result<()> {
+        self.db.clear()?;
         for model in json["global"].members() {
             let id_bytes = model["id"].as_u64().unwrap().to_be_bytes();
             self.db.insert(id_bytes, model.to_string().as_bytes())?;