From b89ad12d58597f47c2ec063b5b8d76e4db5594bd Mon Sep 17 00:00:00 2001
From: "shaojin.wensj" <shaojin.wensj@alibaba-inc.com>
Date: Mon, 25 Mar 2019 20:19:50 +0800
Subject: [PATCH] OracleSQLObjectImpl support none OracleASTVisitor

---
 .../druid/sql/dialect/oracle/ast/OracleSQLObjectImpl.java   | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/OracleSQLObjectImpl.java b/src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/OracleSQLObjectImpl.java
index f53c61b1c7..349f72583b 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/OracleSQLObjectImpl.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/oracle/ast/OracleSQLObjectImpl.java
@@ -28,8 +28,10 @@ public abstract class OracleSQLObjectImpl extends SQLObjectImpl implements Oracl
     }
 
     @Override
-    protected void accept0(SQLASTVisitor visitor) {
-        this.accept0((OracleASTVisitor) visitor);
+    protected void accept0(SQLASTVisitor v) {
+        if (v instanceof OracleASTVisitor) {
+            this.accept0((OracleASTVisitor) v);
+        }
     }
 
     public abstract void accept0(OracleASTVisitor visitor);