bug fixed

src/main/java/com/alibaba/druid/pool/DruidConnectionHolder.java

@@ -30,14 +30,14 @@ import com.alibaba.druid.support.logging.Log;
 import com.alibaba.druid.support.logging.LogFactory;
 import com.alibaba.druid.util.IOUtils;
 import com.alibaba.druid.util.JdbcConstants;
-import com.alibaba.druid.util.JdbcUtils;
 
 /**
  * @author wenshao<szujobs@hotmail.com>
  */
 public final class DruidConnectionHolder {
-    private final static Log                 LOG                     = LogFactory.getLog(DruidConnectionHolder.class);
-    
+
+    private final static Log                    LOG                      = LogFactory.getLog(DruidConnectionHolder.class);
+
     private final DruidAbstractDataSource       dataSource;
     private final Connection                    conn;
     private final List<ConnectionEventListener> connectionEventListeners = new CopyOnWriteArrayList<ConnectionEventListener>();
@@ -60,6 +60,7 @@ public final class DruidConnectionHolder {
     private int                                 underlyingHoldability;
     private int                                 underlyingTransactionIsolation;
     private boolean                             underlyingAutoCommit;
+    private boolean                             discard                  = false;
 
     public DruidConnectionHolder(DruidAbstractDataSource dataSource, Connection conn) throws SQLException{
 
@@ -167,6 +168,17 @@ public final class DruidConnectionHolder {
         return statementPool;
     }
 
+    public PreparedStatementPool getStatementPoolDirect() {
+        return statementPool;
+    }
+
+    public void clearStatementCache() {
+        if (this.statementPool == null) {
+            return;
+        }
+        this.statementPool.clear();
+    }
+
     public DruidAbstractDataSource getDataSource() {
         return dataSource;
     }
@@ -218,13 +230,21 @@ public final class DruidConnectionHolder {
 
         for (Object item : statementTrace.toArray()) {
             Statement stmt = (Statement) item;
-            JdbcUtils.close(stmt);
+            stmt.close();
         }
         statementTrace.clear();
 
         conn.clearWarnings();
     }
 
+    public boolean isDiscard() {
+        return discard;
+    }
+
+    public void setDiscard(boolean discard) {
+        this.discard = discard;
+    }
+
     public String toString() {
         StringBuilder buf = new StringBuilder();