/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2006, Red Hat Middleware LLC, 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.resource.adapter.jdbc;

import java.io.PrintWriter;
import java.io.Serializable;
import java.sql.Connection;
import java.sql.SQLException;

import javax.naming.Reference;
import javax.resource.Referenceable;
import javax.resource.ResourceException;
import javax.resource.spi.ConnectionManager;
import javax.resource.spi.ConnectionRequestInfo;
import javax.sql.DataSource;
import javax.transaction.RollbackException;

import org.jboss.resource.connectionmanager.JTATransactionChecker;
import org.jboss.tm.TransactionTimeoutConfiguration;
import org.jboss.util.NestedSQLException;

/**
 * WrapperDataSource
 *
 * @author <a href="mailto:d_jencks@users.sourceforge.net">David Jencks</a>
 * @author <a href="mailto:adrian@jboss.com">Adrian Brock</a>
 * @version $Revision: 71788 $
 */
public class WrapperDataSource extends JBossWrapper implements Referenceable, DataSource, Serializable  
{
   static final long serialVersionUID = 3570285419164793501L;
   
   private final BaseWrapperManagedConnectionFactory mcf;
   private final ConnectionManager cm;

   private Reference reference;

   protected WrapperDataSource (final BaseWrapperManagedConnectionFactory mcf, final ConnectionManager cm)
   {
      this.mcf = mcf;
      this.cm = cm;   
   }

   public PrintWriter getLogWriter() throws SQLException
   {
      // TODO: implement this javax.sql.DataSource method
      return null;
   }

   public void setLogWriter(PrintWriter param1) throws SQLException
   {
      // TODO: implement this javax.sql.DataSource method
   }

   public int getLoginTimeout() throws SQLException
   {
      // TODO: implement this javax.sql.DataSource method
      return 0;
   }

   public void setLoginTimeout(int param1) throws SQLException
   {
      // TODO: implement this javax.sql.DataSource method
   }
   
   public Connection getConnection() throws SQLException
   {
      try 
      {
         WrappedConnection wc = (WrappedConnection) cm.allocateConnection(mcf, null);
         wc.setDataSource(this);
         return wc;
      }
      catch (ResourceException re)
      {
         throw new NestedSQLException(re);
      }
   }

   public Connection getConnection(String user, String password) throws SQLException
   {
      ConnectionRequestInfo cri = new WrappedConnectionRequestInfo(user, password);
      try 
      {
         WrappedConnection wc = (WrappedConnection) cm.allocateConnection(mcf, cri);
         wc.setDataSource(this);
         return wc;
      }
      catch (ResourceException re)
      {
         throw new NestedSQLException(re);
      }
   }

   public void setReference(final Reference reference)
   {
      this.reference = reference;
   }

   public Reference getReference()
   {
      return reference;
   }
   
   protected int getTimeLeftBeforeTransactionTimeout() throws SQLException
   {
      try
      {
         if (cm instanceof TransactionTimeoutConfiguration)
         {
            long timeout = ((TransactionTimeoutConfiguration) cm).getTimeLeftBeforeTransactionTimeout(true);
            // No timeout
            if (timeout == -1)
               return -1;
            // Round up to the nearest second
            long result = timeout / 1000;
            if ((result % 1000) != 0)
               ++result;
            return (int) result;
         }
         else
            return -1;
      }
      catch (RollbackException e)
      {
         throw new NestedSQLException(e);
      }
   }
   
   /**
    * Check whether a tranasction is active
    *
    * @throws SQLException if the transaction is not active, preparing, prepared or committing or for any error in the transaction manager
    */
   protected void checkTransactionActive() throws SQLException
   {
      if (cm == null)
         throw new SQLException("No connection manager");
      try
      {
         if (cm instanceof JTATransactionChecker)
            ((JTATransactionChecker) cm).checkTransactionActive();
      }
      catch (Exception e)
      {
         throw new NestedSQLException(e);
      }
   }
}