diff --git a/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarConfigLoader.java b/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarConfigLoader.java
index 8c55b633d5..513d987ce2 100644
--- a/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarConfigLoader.java
+++ b/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarConfigLoader.java
@@ -28,9 +28,13 @@ public class CobarConfigLoader extends URLConnectionConfigLoader implements Conf
     public CobarDataSource getDataSource() {
         return dataSource;
     }
+    
+    public static boolean isCobar(String url) {
+        return url.startsWith("jdbc:cobar://");
+    }
 
     public static URL createURL(String jdbcUrl) throws SQLException {
-        if (!CobarDataSource.isCobar(jdbcUrl)) {
+        if (!isCobar(jdbcUrl)) {
             throw new SQLException("illegal cobar url");
         }
 
diff --git a/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarDataSource.java b/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarDataSource.java
index 8780dee8de..1a74993625 100644
--- a/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/ha/cobar/CobarDataSource.java
@@ -9,9 +9,7 @@ import com.alibaba.druid.logging.Log;
 import com.alibaba.druid.logging.LogFactory;
 import com.alibaba.druid.pool.DruidDataSource;
 import com.alibaba.druid.pool.ha.DataSourceHolder;
-import com.alibaba.druid.pool.ha.MultiConnectionHolder;
 import com.alibaba.druid.pool.ha.MultiDataSource;
-import com.alibaba.druid.pool.ha.MultiDataSourceConnection;
 import com.alibaba.druid.util.JdbcUtils;
 
 public class CobarDataSource extends MultiDataSource {
@@ -27,8 +25,6 @@ public class CobarDataSource extends MultiDataSource {
     private List<Filter>     proxyFilters = new ArrayList<Filter>();
     private String           filters;
 
-    
-
     public CobarDataSource(){
 
     }
@@ -78,7 +74,7 @@ public class CobarDataSource extends MultiDataSource {
             throw new SQLException("");
         }
 
-        if (isCobar(url)) {
+        if (CobarConfigLoader.isCobar(url)) {
             this.setConfigLoader(new CobarConfigLoader(this));
         } else {
             DataSourceHolder holder = createDataSourceHolder(this.url, 1);
@@ -106,14 +102,4 @@ public class CobarDataSource extends MultiDataSource {
         JdbcUtils.close(holder);
     }
 
-    public static boolean isCobar(String url) {
-        return url.startsWith("jdbc:cobar://");
-    }
-
-    @Override
-    public MultiConnectionHolder getConnectionInternal(MultiDataSourceConnection conn, String sql) throws SQLException {
-        
-        return null;
-    }
-
 }