usersroledao.java

Java企业级开发项目实践,这是他的附光盘

//---------------------------------------------------------
// Application: Portal of Enterprice
// Author     : eSingle
// File       : UsersroleDAO.java
//
// Copyright 2002 LandSoft Corp.
// Generated at Mon Nov 18 19:57:57 CST 2002
// Created by caoguangxin
// mailto:[e-mail]
//---------------------------------------------------------

package com.landsoft.portal.managent.dao;

import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;

import com.landsoft.portal.managent.model.*;
import com.landsoft.portal.managent.util.CacheManager;

public class UsersroleDAO extends DAO {

  public UsersroleDAO(DataSource ds) {
    super(ds);
  }

  public void insert(Usersrole usersrole) throws SQLException {
    String sql;
    sql = "INSERT INTO usersrole (usercode, rolename) VALUES (?, ?)";
    Connection conn = null;
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    try {
      conn = ds.getConnection();
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, usersrole.getUsercode());
      pstmt.setString(2, usersrole.getRolename());
      pstmt.executeUpdate();
      pstmt.close();
      conn.commit();
    } catch (SQLException sqle) {
      close(rs);
      close(pstmt);
      rollback(conn);
      sqle.printStackTrace();
      throw sqle;
    } finally {
    	close(conn);
    }
  }

  public void update(Usersrole usersrole) throws SQLException {
  	Connection conn = null;
  	PreparedStatement pstmt = null;
    try {
      conn = ds.getConnection();
      String sql = "UPDATE usersrole SET  WHERE usercode=? AND rolename=?";
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, usersrole.getUsercode());
      pstmt.setString(2, usersrole.getRolename());
      pstmt.executeUpdate();
      close(pstmt);
      conn.commit();
    } catch (SQLException e) {
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
  }

  public void delete(String usercode, String rolename) throws SQLException {
  	Connection conn = null;
  	PreparedStatement pstmt = null;
    try {
      conn = ds.getConnection();
      String sql = "DELETE FROM usersrole WHERE usercode=? AND rolename=?";
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, usercode);
      pstmt.setString(2, rolename);
      pstmt.executeUpdate();
      close(pstmt);
      conn.commit();
    } catch (SQLException e) {
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
    String[] objKeys = {"Usersrole", String.valueOf(usercode), String.valueOf(rolename)};
    String objKey = CacheManager.createKey(objKeys);
    DAOCacheManager.invalidate(objKey);
  }

  public Usersrole retrieve(String usercode, String rolename) throws SQLException {
    String[] objKeys = {"Usersrole", String.valueOf(usercode), String.valueOf(rolename)};
    String objKey = CacheManager.createKey(objKeys);
    Usersrole usersrole = (Usersrole) DAOCacheManager.getCache(objKey);
    if (usersrole != null)
      return usersrole;
    Connection conn = null;
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    try {
      conn = ds.getConnection();
      String sql = "SELECT * FROM usersrole WHERE usercode=? AND rolename=?";
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, usercode);
      pstmt.setString(2, rolename);
      rs = pstmt.executeQuery();
      if (rs.next()) {
        usersrole = new Usersrole();
        usersrole.setUsercode(rs.getString(1));
        usersrole.setRolename(rs.getString(2));
        populate(usersrole, rs);
      }
      close(rs);
      close(pstmt);
    } catch (SQLException e) {
      close(rs);
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
    DAOCacheManager.putCache(usersrole, objKey, 1);
    return usersrole;
  }

  public List list() throws SQLException {
    String[] objKeys = {"Usersrole", "list"};
    String objKey = CacheManager.createKey(objKeys);
    ArrayList list = (ArrayList) DAOCacheManager.getCache(objKey);
    if (list != null)
      return list;
    list = new ArrayList();
    Connection conn = null;
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    try {
      conn = ds.getConnection();
      String sql = "SELECT usercode, rolename FROM usersrole";
      pstmt = conn.prepareStatement(sql);
      rs = pstmt.executeQuery();
      while(rs.next()) {
        Usersrole usersrole = new Usersrole();
        usersrole.setUsercode(rs.getString(1));
        usersrole.setRolename(rs.getString(2));
        populate(usersrole, rs);
        list.add(usersrole);
      }
      close(rs);
      close(pstmt);
    } catch (SQLException e) {
      close(rs);
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
    DAOCacheManager.putCache(list, objKey, 1);
    return list;
  }

  public List list(int offset, int limit) throws SQLException {
    String[] objKeys = {"Usersrole", "list", String.valueOf(offset), String.valueOf(limit)};
    String objKey = CacheManager.createKey(objKeys);
    ArrayList list = (ArrayList) DAOCacheManager.getCache(objKey);
    if (list != null)
      return list;
    list = new ArrayList();
    Connection conn = null;
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    try {
      conn = ds.getConnection();
      String sql = "SELECT usercode, rolename FROM usersrole";
      pstmt = conn.prepareStatement(sql);
      rs = pstmt.executeQuery();
      if(offset > 0) rs.absolute(offset);
      int recCount = 0;
      while((recCount++ < limit) && rs.next()) {
        Usersrole usersrole = new Usersrole();
        usersrole.setUsercode(rs.getString(1));
        usersrole.setRolename(rs.getString(2));
        populate(usersrole, rs);
        list.add(usersrole);
      }
      close(rs);
      close(pstmt);
    } catch (SQLException e) {
      close(rs);
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
    DAOCacheManager.putCache(list, objKey, 1);
    return list;
  }

}