增强监控

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@333 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/main/java/com/alibaba/druid/stat/JdbcConnectionStatMBean.java

@@ -19,17 +19,11 @@ import java.util.Date;
 
 public interface JdbcConnectionStatMBean {
 
-    long getCount();
-
-    long getErrorCount();
-
-    Date getLastConnectTime();
-
     long getConnectCount();
 
     long getCloseCount();
 
-    long getActiveMax();
+    int getActiveMax();
 
     long getCommitCount();