dbbookmark.java

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package com.laoer.bbscs.bbs.business;

import com.laoer.bbscs.db.*;
import java.util.List;
import com.laoer.bbscs.exception.ObjectException;
import com.laoer.bbscs.exception.ObjectNoExistException;
import java.sql.*;
import com.laoer.bbscs.util.*;
import com.laoer.bbscs.sysinfo.*;
import org.apache.log4j.*;

/**
 * <p>Title: 天乙社区V5.0</p>
 * <p>Description: BBS-CS天乙社区V5.0</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: laoer.com</p>
 * @author 龚天乙
 * @version 5.0
 */

public class DBBookMark
    extends BookMark
    implements DBInf {

  ResultSet rs = null;
  String SQL = "";
  static Logger logger = Logger.getLogger(DBBookMark.class.getName());

  public DBBookMark() {
  }

  public int delBookMark(TranContext aTranContext) {
    TranContext myDBTrans = null;
    if (aTranContext == null) {
      myDBTrans = new TranContext();
    }
    else {
      myDBTrans = aTranContext;
    }
    try {
      this.delDB(myDBTrans, "ID");
      return Sys.RESULT_RIGHT;
    }
    catch (ObjectException e) {
      logger.error(e);
      return Sys.RESULT_OBJECTEXCEPTION;
    }
    finally {
      if (aTranContext == null && myDBTrans != null) {
        myDBTrans.freeCon();
      }
    }
  }

  public int createBookMark(TranContext aTranContext) {
    TranContext myDBTrans = null;
    if (aTranContext == null) {
      myDBTrans = new TranContext();
    }
    else {
      myDBTrans = aTranContext;
    }
    try {
      this.insertDB(myDBTrans);
      return Sys.RESULT_RIGHT;
    }
    catch (ObjectException e) {
      logger.error(e);
      return Sys.RESULT_OBJECTEXCEPTION;
    }
    finally {
      if (aTranContext == null && myDBTrans != null) {
        myDBTrans.freeCon();
      }
    }
  }

  public List getBookMarkList(TranContext aTranContext, String key) {
    TranContext myDBTrans = null;
    if (aTranContext == null) {
      myDBTrans = new TranContext();
    }
    else {
      myDBTrans = aTranContext;
    }
    try {
      List alist = null;
      alist = this.loadDBs(myDBTrans, key);
      return alist;
    }
    catch (ObjectException e) {
      logger.error(e);
      return (List) Sys.RESULT_NULL;
    }
    finally {
      if (aTranContext == null && myDBTrans != null) {
        myDBTrans.freeCon();
      }
    }
  }

  public int getBookMark(TranContext aTranContext, String key, boolean isLoad) {
    TranContext myDBTrans = null;
    if (aTranContext == null) {
      myDBTrans = new TranContext();
    }
    else {
      myDBTrans = aTranContext;
    }
    try {
      this.loadDB(myDBTrans, key, isLoad);
      return Sys.RESULT_RIGHT;
    }
    catch (ObjectException e) {
      logger.error(e);
      return Sys.RESULT_OBJECTEXCEPTION;
    }
    catch (ObjectNoExistException e) {
      return Sys.RESULT_OBJECTNOEXISTEXCEPTION;
    }
    finally {
      if (aTranContext == null && myDBTrans != null) {
        myDBTrans.freeCon();
      }
    }
  }

  public int getBookMarkNum(TranContext aTranContext) {
    TranContext myDBTrans = null;
    if (aTranContext == null) {
      myDBTrans = new TranContext();
    }
    else {
      myDBTrans = aTranContext;
    }
    try {
      int total = 0;
      SQL = "select count(*) as total from " + this.myBookMarkInfo.getTablename() +
          " where UserID = ?";
      myDBTrans.prepareStatement(SQL);
      myDBTrans.setLong(1, this.myBookMarkInfo.getUserID());
      rs = myDBTrans.executeQuery();
      if (rs.next()) {
        total = rs.getInt("total");
      }
      return total;
    }
    catch (SQLException e) {
      logger.error(e);
      return Sys.RESULT_ZERO;
    }
    finally {
      try {
        if (rs != null) {
          rs.close();
        }
      }
      catch (SQLException e) {
      }
      try {
        if (myDBTrans != null) {
          myDBTrans.close();
        }
      }
      catch (SQLException e) {
      }
      if (aTranContext == null && myDBTrans != null) {
        myDBTrans.freeCon();
      }
    }
  }

  public int updateBookMark(TranContext aTranContext, String key) {
    TranContext myDBTrans = null;
    if (aTranContext == null) {
      myDBTrans = new TranContext();
    }
    else {
      myDBTrans = aTranContext;
    }
    try {
      this.updateDB(myDBTrans, key);
      return Sys.RESULT_RIGHT;
    }
    catch (ObjectException e) {
      logger.error(e);
      return Sys.RESULT_OBJECTEXCEPTION;
    }
    finally {
      if (aTranContext == null && myDBTrans != null) {
        myDBTrans.freeCon();
      }
    }
  }

  public void loadDB(TranContext myDB, String key, boolean isLoad) throws
      ObjectException, ObjectNoExistException {
    try {
      if (key.equals("reBookMark")) {
        SQL = "select * from " + this.myBookMarkInfo.getTablename() +
            " where BookMarkName = ? and UserID = ?";
        myDB.prepareStatement(SQL);
        myDB.setString(1, this.myBookMarkInfo.getBookMarkName());
        myDB.setLong(2, this.myBookMarkInfo.getUserID());
        rs = myDB.executeQuery();
      }
      if (key.equals("ID")) {
        SQL = "select * from " + this.myBookMarkInfo.getTablename() +
            " where ID= ? and UserID = ?";
        myDB.prepareStatement(SQL);
        myDB.setString(1, this.myBookMarkInfo.getID());
        myDB.setLong(2, this.myBookMarkInfo.getUserID());
        rs = myDB.executeQuery();
      }
      if (rs.next()) {
        if (isLoad) {
          this.myBookMarkInfo.setID(rs.getString("ID"));
          this.myBookMarkInfo.setUserID(rs.getLong("UserID"));
          this.myBookMarkInfo.setBookMarkName(rs.getString("BookMarkName"));
          this.myBookMarkInfo.setUrl(rs.getString("Url"));
          this.myBookMarkInfo.setAlt(rs.getString("Alt"));
        }
      }
      else {
        throw new ObjectNoExistException();
      }

    }
    catch (SQLException e) {
      throw new ObjectException(e.toString());
    }
    finally {
      try {
        if (rs != null) {
          rs.close();
          rs = null;
        }
      }
      catch (SQLException e) {
      }
      try {
        if (myDB != null) {
          myDB.close();
        }
      }
      catch (SQLException e) {
      }
    }
  }

  public List loadDBs(TranContext myDB, String key) throws ObjectException {
    List alist = ListFactory.getInstance(2);
    BookMarkInfo aBookMarkInfo = null;
    try {
      if (key.equals("myBookMarkList")) {
        String SQLStr = "select * from " + this.myBookMarkInfo.getTablename() +
            " where UserID = " + this.myBookMarkInfo.getUserID();
        this.pages.setTotals(this.getBookMarkNum(myDB));
        this.pages.doPageBreak();
        this.sListPageBreak = this.pages.getListPageBreak();
        this.pages.setSQL(SQLStr);
        rs = this.pages.getRs(myDB, "ID");
      }
      while (rs.next()) {
        aBookMarkInfo = new BookMarkInfo();
        aBookMarkInfo.setID(rs.getString("ID"));
        aBookMarkInfo.setUserID(rs.getLong("UserID"));
        aBookMarkInfo.setBookMarkName(rs.getString("BookMarkName"));
        aBookMarkInfo.setUrl(rs.getString("Url"));
        aBookMarkInfo.setAlt(rs.getString("Alt"));
        alist.add(aBookMarkInfo);
      }
      return alist;
    }
    catch (SQLException e) {
      throw new ObjectException(e.toString());
    }
    finally {
      try {
        if (rs != null) {
          rs.close();
          rs = null;
        }
      }
      catch (SQLException e) {
      }
      try {
        if (myDB != null) {
          myDB.close();
        }
      }
      catch (SQLException e) {
      }
    }
  }

  public void insertDB(TranContext myDB) throws ObjectException {
    try {
      SQL = "insert into " + this.myBookMarkInfo.getTablename() +
          " (ID,UserID,BookMarkName,Url,Alt) values (?,?,?,?,?)";
      myDB.prepareStatement(SQL);
      myDB.setString(1,
                     String.valueOf(Util.getaLongTime()) +
                     String.valueOf(myBookMarkInfo.getUserID()));
      myDB.setLong(2, this.myBookMarkInfo.getUserID());
      myDB.setString(3, this.myBookMarkInfo.getBookMarkName());
      myDB.setString(4, this.myBookMarkInfo.getUrl());
      myDB.setString(5, this.myBookMarkInfo.getAlt());
      myDB.executeUpdate();
    }
    catch (SQLException e) {
      throw new ObjectException(e.toString());
    }
    finally {
      try {
        if (myDB != null) {
          myDB.close();
        }
      }
      catch (SQLException e) {
      }
    }
  }

  public void updateDB(TranContext myDB, String key) throws ObjectException {
    try {
      if (key.equals("ID")) {
        SQL = "update " + this.myBookMarkInfo.getTablename() +
            " set BookMarkName = ?,Url = ?,Alt = ? where ID = ? and UserID = ?";
        myDB.prepareStatement(SQL);
        myDB.setString(1, this.myBookMarkInfo.getBookMarkName());
        myDB.setString(2, this.myBookMarkInfo.getUrl());
        myDB.setString(3, this.myBookMarkInfo.getAlt());
        myDB.setString(4, this.myBookMarkInfo.getID());
        myDB.setLong(5, this.myBookMarkInfo.getUserID());
        myDB.executeUpdate();
      }
    }
    catch (SQLException e) {
      throw new ObjectException(e.toString());
    }
    finally {
      try {
        if (myDB != null) {
          myDB.close();
        }
      }
      catch (SQLException e) {
      }
    }
  }

  public void delDB(TranContext myDB, String key) throws ObjectException {
    try {
      if (key.equals("ID")) {
        SQL = "delete from " + this.myBookMarkInfo.getTablename() +
            " where ID = ? and UserID = ?";
        myDB.prepareStatement(SQL);
        myDB.setString(1, this.myBookMarkInfo.getID());
        myDB.setLong(2, this.myBookMarkInfo.getUserID());
        myDB.executeUpdate();
      }
    }
    catch (SQLException e) {
      throw new ObjectException(e.toString());
    }
    finally {
      try {
        if (myDB != null) {
          myDB.close();
        }
      }
      catch (SQLException e) {
      }
    }
  }

}