/*
 * IronJacamar, a Java EE Connector Architecture implementation
 * Copyright 2010, Red Hat Inc, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.jca.adapters.jdbc.extensions.oracle;

import org.jboss.jca.adapters.jdbc.spi.ValidConnectionChecker;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.SQLException;

/**
 * Implements a valid connection checker for Oracle.
 * This is a legacy implementation which uses a pingDatabase method.
 *
 * @author <a href="mailto:abrock@redhat.com">Adrian Brock</a>
 * @author <a href="mailto:jesper.pedersen@ironjacamar.org">Jesper Pedersen</a>
 */
public class OracleLegacyValidConnectionChecker implements ValidConnectionChecker, Serializable
{
   private static final long serialVersionUID = 1937054230333286884L;

   /**
    * Constructor
    */
   public OracleLegacyValidConnectionChecker()
   {
   }

   /**
    * {@inheritDoc}
    */
   @Override
   public SQLException isValidConnection(Connection c)
   {
      try
      {
         Method ping = SecurityActions.getMethod(c.getClass(), "pingDatabase", (Class<?>[])null);
         SecurityActions.setAccessible(ping);

         Integer status = (Integer) ping.invoke(c, (Object[])null);

         // Error
         if (status == null || status.intValue() < 0)
            return new SQLException("pingDatabase failed status=" + status);
      }
      catch (Exception e)
      {
         return new SQLException("pingDatabase failed", e);
      }

      // OK
      return null;
   }
}
