contactdao.java

来自「Java企业级开发项目实践,这是他的附光盘」· Java 代码 · 共 216 行

//---------------------------------------------------------
// Application: Crm of Enterprice
// Author     : eSingle
// File       : ContactDAO.java
//
// Copyright 2002 LandSoft Corp.
// Generated at Mon Nov 18 22:41:11 CST 2002
// Created by caoguangxin
// mailto:[e-mail]
//---------------------------------------------------------

package com.landsoft.crm.dao;

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

import com.landsoft.crm.model.*;
import com.landsoft.crm.util.CacheManager;

public class ContactDAO extends DAO {

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

  public void insert(Contact contact) throws SQLException {
    String sql;
    sql = "INSERT INTO contact (contactname, clientname, sex, phone, mobile, address) VALUES (?, ?, ?, ?, ?, ?)";
    Connection conn = null;
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    try {
      conn = ds.getConnection();
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, contact.getContactname());
      pstmt.setString(2, contact.getClientname());
      pstmt.setString(3, contact.getSex());
      pstmt.setString(4, contact.getPhone());
      pstmt.setString(5, contact.getMobile());
      pstmt.setString(6, contact.getAddress());
      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(Contact contact) throws SQLException {
  	Connection conn = null;
  	PreparedStatement pstmt = null;
    try {
      conn = ds.getConnection();
      String sql = "UPDATE contact SET sex=?, phone=?, mobile=?, address=? WHERE contactname=? AND clientname=?";
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, contact.getSex());
      pstmt.setString(2, contact.getPhone());
      pstmt.setString(3, contact.getMobile());
      pstmt.setString(4, contact.getAddress());
      pstmt.setString(5, contact.getContactname());
      pstmt.setString(6, contact.getClientname());
      pstmt.executeUpdate();
      close(pstmt);
      conn.commit();
    } catch (SQLException e) {
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
  }

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

  public Contact retrieve(String contactname, String clientname) throws SQLException {
    String[] objKeys = {"Contact", String.valueOf(contactname), String.valueOf(clientname)};
    String objKey = CacheManager.createKey(objKeys);
    Contact contact = (Contact) DAOCacheManager.getCache(objKey);
    if (contact != null)
      return contact;
    Connection conn = null;
    PreparedStatement pstmt = null;
    ResultSet rs = null;
    try {
      conn = ds.getConnection();
      String sql = "SELECT * FROM contact WHERE contactname=? AND clientname=?";
      pstmt = conn.prepareStatement(sql);
      pstmt.setString(1, contactname);
      pstmt.setString(2, clientname);
      rs = pstmt.executeQuery();
      if (rs.next()) {
        contact = new Contact();
        contact.setContactname(rs.getString(1));
        contact.setClientname(rs.getString(2));
        contact.setSex(rs.getString(3));
        contact.setPhone(rs.getString(4));
        contact.setMobile(rs.getString(5));
        contact.setAddress(rs.getString(6));
        populate(contact, rs);
      }
      close(rs);
      close(pstmt);
    } catch (SQLException e) {
      close(rs);
      close(pstmt);
      rollback(conn);
      e.printStackTrace();
    } finally {
    	close(conn);
    }
    DAOCacheManager.putCache(contact, objKey, 1);
    return contact;
  }

  public List list() throws SQLException {
    String[] objKeys = {"Contact", "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 sex, phone, mobile, address, contactname, clientname FROM contact";
      pstmt = conn.prepareStatement(sql);
      rs = pstmt.executeQuery();
      while(rs.next()) {
        Contact contact = new Contact();
        populate(contact, rs);
        list.add(contact);
      }
      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 = {"Contact", "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 sex, phone, mobile, address, contactname, clientname FROM contact";
      pstmt = conn.prepareStatement(sql);
      rs = pstmt.executeQuery();
      if(offset > 0) rs.absolute(offset);
      int recCount = 0;
      while((recCount++ < limit) && rs.next()) {
        Contact contact = new Contact();
        populate(contact, rs);
        list.add(contact);
      }
      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;
  }

}