/*
    * Copyright 2007 The Kuali Foundation
    *
    * Licensed under the Educational Community License, Version 1.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.opensource.org/licenses/ecl1.php
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.rice.kew.useroptions.dao.impl;
  
  import java.sql.Connection;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  
  import javax.sql.DataSource;
  
  import org.apache.log4j.Logger;
  import org.kuali.rice.kew.useroptions.dao.ReloadActionListDAO;
  
  /**
   * Implementation of ReloadActionListDAO.  This needs to be straight JDBC since it ignores SQLException in one case.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class ReloadActionListDaoJdbcImpl implements ReloadActionListDAO {
  	
  	private static final String RELOAD_ACTION_LIST = "RELOAD_ACTION_LIST";
  
  	private static final Logger LOG = Logger.getLogger(ReloadActionListDaoJdbcImpl.class);
  	
  	DataSource nonTxDataSource;
  	
  	/**
  	 * This constructs a ReloadActionListDaoJdbcImpl
  	 * 
  	 */
  	public ReloadActionListDaoJdbcImpl(DataSource nonTxDataSource) {
  		this.nonTxDataSource = nonTxDataSource; 
  	}
  
  	/**
  	 * @see org.kuali.rice.kew.useroptions.dao.ReloadActionListDAO#setReloadActionListFlag(java.lang.String)
  	 */
  	public void setReloadActionListFlag(String userId) {
  		Connection conn = null;
  		PreparedStatement preparedStatement = null;
  		
  		try {
  			conn = nonTxDataSource.getConnection();
  			
  			preparedStatement = conn.prepareStatement("insert into KREW_USR_OPTN_T (PRSN_OPTN_ID, PRNCPL_ID, VAL, VER_NBR) VALUES (?, ?, ?, ?)");
  			preparedStatement.setString(1, RELOAD_ACTION_LIST);
  			preparedStatement.setString(2, userId);
  			preparedStatement.setString(3, "true");
  			preparedStatement.setInt(4, 1);
  			int result = preparedStatement.executeUpdate();
  			
  		} catch (SQLException e) {
  			// this is normal if the preference is already set.
  		} finally {
  			if (preparedStatement != null) {
  				try {
  					preparedStatement.close();
  				} catch (SQLException e) {
  					LOG.error("couldn't close PreparedStatement", e);
  				}
  			}
  			if (conn != null) {
  				try {
  					conn.close();
  				} catch (SQLException e) {
  					LOG.error("couldn't close Connection", e);
  				}
  			}
  		}
  	}
  
  	
  	/**
  	 * @see org.kuali.rice.kew.useroptions.dao.ReloadActionListDAO#checkAndResetReloadActionListFlag(java.lang.String)
  	 */
  	public boolean checkAndResetReloadActionListFlag(String userId) {
  		Connection conn = null;
  		PreparedStatement preparedStatement = null;
  		int updatedCount = 0;
  		
  		try {
  			conn = nonTxDataSource.getConnection();
  			
  			preparedStatement = conn.prepareStatement("delete from KREW_USR_OPTN_T where PRSN_OPTN_ID = ? and PRNCPL_ID = ?");
 			preparedStatement.setString(1, RELOAD_ACTION_LIST);
 			preparedStatement.setString(2, userId);
 			updatedCount = preparedStatement.executeUpdate();
 			
 		} catch (SQLException e) {
 			LOG.error("unable to delete RELOAD_ACTION_LIST preference", e);
 		} finally {
 			if (preparedStatement != null) {
 				try {
 					preparedStatement.close();
 				} catch (SQLException e) {
 					LOG.error("couldn't close PreparedStatement", e);
 				}
 			}
 			if (conn != null) {
 				try {
 					conn.close();
 				} catch (SQLException e) {
 					LOG.error("couldn't close Connection", e);
 				}
 			}
 		}
 		
 		return updatedCount == 1;
 	}
 	
 	
 }