支持HA

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@462 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/main/java/com/alibaba/druid/pool/ha/HAConnection.java

@@ -54,7 +54,7 @@ public class HAConnection extends WrapperAdapter implements Connection, Connecti
 
     public void checkConnection(String sql) throws SQLException {
         if (conn == null) {
-            conn = haDataSource.getConnectionInternal(id);
+            conn = haDataSource.getConnectionInternal(id, sql);
         }
 
         if (autoCommit != null) {

src/main/java/com/alibaba/druid/pool/ha/HADataSource.java

@@ -36,7 +36,7 @@ public class HADataSource extends MultiDataSource implements DataSource {
         return statementIdSeed.getAndIncrement();
     }
 
-    public Connection getConnectionInternal(int requestNumber) throws SQLException {
+    public Connection getConnectionInternal(int connectionId, String sql) throws SQLException {
         int tryCount = 0;
 
         for (;;) {
@@ -46,7 +46,7 @@ public class HADataSource extends MultiDataSource implements DataSource {
                 throw new SQLException("can not get connection, no availabe datasources");
             }
 
-            int index = requestNumber % size;
+            int index = connectionId % size;
 
             DruidDataSource dataSource = null;