/**
 * 
 */
package com.permission.dao.impl;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import com.permission.dao.IRoleAndFunctionDAO;
import com.permission.sys.BaseDAO;
import com.permission.sys.PageRoll;
import com.permission.utils.common.PermissionException;
import com.permission.utils.db.DBUtil;
import com.permission.vo.RoleAndFunction;

/**
 * @author Jack
 * 
 */
public class RoleAndFunctionDAOImpl extends BaseDAO implements
		IRoleAndFunctionDAO {

	@Override
	public void add(RoleAndFunction roleAndFunction) throws PermissionException {
		Connection conn = null;
		PreparedStatement ps = null;
		String sql = "insert into RoleAndFunction(RoleID,FunctionID) values (?,?)";
		try {
			conn = DBUtil.getConnection();
			ps = conn.prepareStatement(sql);
			ps.setInt(1, roleAndFunction.getRoleID());
			ps.setInt(2, roleAndFunction.getFunctionID());
			ps.executeUpdate();
		} catch (SQLException e) {
			e.printStackTrace();
			throw new PermissionException("添加角色功能关系失败");
		} finally {
			DBUtil.close(null, ps, conn);
		}
	}
	
	@Override
	public void delete(Integer roleID, Integer functionID)
			throws PermissionException {
		StringBuffer sql = new StringBuffer();
		sql.append("delete from RoleAndFunction where roleID=");
		sql.append(roleID);
		sql.append(" and functionID=");
		sql.append(functionID);
		try {
			executeUpdate(sql.toString());
		} catch (SQLException e) {
			e.printStackTrace();
			throw new PermissionException("删除角色功能关系失败");
		}
	}

	@Override
	public RoleAndFunction findByID(Integer id) throws PermissionException {
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		RoleAndFunction roleAndFunction = null;
		String sql = "select id,RoleID,FunctionID from RoleAndFunction where id=?";
		try {
			conn = DBUtil.getConnection();
			ps = conn.prepareStatement(sql);
			ps.setInt(1, id);
			rs = ps.executeQuery();
			if (rs.next()) {
				roleAndFunction = new RoleAndFunction();
				roleAndFunction.setId(rs.getInt(1));
				roleAndFunction.setRoleID(rs.getInt(2));
				roleAndFunction.setFunctionID(rs.getInt(3));
			}
		} catch (SQLException e) {
			e.printStackTrace();
			throw new PermissionException("查询角色功能关系失败");
		} finally {
			DBUtil.close(rs, ps, conn);
		}
		return roleAndFunction;
	}

	@Override
	public List<RoleAndFunction> list(PageRoll pageRoll)
			throws PermissionException {
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		List<RoleAndFunction> list = new ArrayList<RoleAndFunction>();
		String sql = "select id,RoleID,FunctionID from RoleAndFunction limit ?,?";
		try {
			conn = DBUtil.getConnection();
			ps = conn.prepareStatement(sql);
			ps.setInt(1, (pageRoll.getCurrPage() - 1) * pageRoll.getPageSize());
			ps.setInt(2, pageRoll.getPageSize());
			rs = ps.executeQuery();
			while (rs.next()) {
				RoleAndFunction roleAndFunction = new RoleAndFunction();
				roleAndFunction.setId(rs.getInt(1));
				roleAndFunction.setRoleID(rs.getInt(2));
				roleAndFunction.setFunctionID(rs.getInt(3));
				list.add(roleAndFunction);
			}
			sql = "select count(*) from RoleAndFunction";
			ps = conn.prepareStatement(sql);
			rs = ps.executeQuery();
			rs.next();
			pageRoll.setCountSize(rs.getInt(1));
		} catch (SQLException e) {
			e.printStackTrace();
			throw new PermissionException("查询角色功能关系列表失败");
		} finally {
			DBUtil.close(rs, ps, conn);
		}
		return list;
	}

	@Override
	public void update(RoleAndFunction roleAndFunction)
			throws PermissionException {
		Connection conn = null;
		PreparedStatement ps = null;
		String sql = "update RoleAndFunction set RoleID=?,FunctionID=? where id=?";
		try {
			conn = DBUtil.getConnection();
			ps = conn.prepareStatement(sql);
			ps.setInt(1, roleAndFunction.getRoleID());
			ps.setInt(2, roleAndFunction.getFunctionID());
			ps.setInt(3, roleAndFunction.getId());
			ps.executeUpdate();
		} catch (SQLException e) {
			e.printStackTrace();
			throw new PermissionException("修改角色功能关系失败");
		} finally {
			DBUtil.close(null, ps, conn);
		}
	}

	@Override
	public List<RoleAndFunction> findByRoleID(Integer roleID)
			throws PermissionException {
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		List<RoleAndFunction> list = new ArrayList<RoleAndFunction>();
		String sql = "select id,RoleID,FunctionID from RoleAndFunction where RoleID=?";
		try {
			conn = DBUtil.getConnection();
			ps = conn.prepareStatement(sql);
			ps.setInt(1, roleID);
			rs = ps.executeQuery();
			if (rs.next()) {
				RoleAndFunction roleAndFunction = new RoleAndFunction();
				roleAndFunction.setId(rs.getInt(1));
				roleAndFunction.setRoleID(rs.getInt(2));
				roleAndFunction.setFunctionID(rs.getInt(3));
				list.add(roleAndFunction);
			}
		} catch (SQLException e) {
			e.printStackTrace();
			throw new PermissionException("根据角色ID查询角色功能关系失败");
		} finally {
			DBUtil.close(rs, ps, conn);
		}
		return list;
	}
	
	
}