From 6a5672854418ea7f60a5efbbb8c0783033f098b9 Mon Sep 17 00:00:00 2001
From: ghassmo <ghxxm@protonmail.com>
Date: Fri, 4 Jun 2021 19:40:20 +0300
Subject: [PATCH] add key_exist_cf() funciton to Rocks struct

---
 src/rocks.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/rocks.rs b/src/rocks.rs
index ec4fc7069..3b1a89ee8 100644
--- a/src/rocks.rs
+++ b/src/rocks.rs
@@ -83,6 +83,14 @@ impl Rocks {
         Ok(val)
     }
 
+    pub fn key_exist_cf(&self, cf: &ColumnFamily, key: Vec<u8>) -> Result<bool> {
+        let val = self.db.get_cf(cf, key)?;
+        if let None = val {
+            return Ok(false);
+        };
+        Ok(true)
+    }
+
     pub fn iterator(&self, cf: &ColumnFamily, iterator_mode: IteratorMode) -> rocksdb::DBIterator{
         let iterator_mode = match iterator_mode {
             IteratorMode::Start => rocksdb::IteratorMode::Start,