adminrevokemusics.java

tbuy1.1.5是在netbeans环境下用JSF技术编写的一个论坛tbuy1.1.5是在netbeans环境下用JSF技术编写的一个论坛

/*
 * 作者: 胡李青
 * qq: 31703299
 * Copyright (c) 2007 huliqing
 * 主页 http://www.tbuy.biz/
 * 你可以免费使用该软件，未经许可请勿作用于任何商业目的,如有技术问题请与本人联系！
 */

package biz.tbuy.bbs.bean;

import biz.tbuy.bbs.BBSGroups;
import biz.tbuy.bbs.MusicAction;
import biz.tbuy.bbs.MusicModel;
import biz.tbuy.common.Constants;
import biz.tbuy.common.Utils;
import biz.tbuy.common.page.DataPage;
import biz.tbuy.common.page.PagedListDataModel;
import java.io.File;
import java.util.List;
import javax.faces.component.UIData;
import javax.faces.model.DataModel;

/**
 * @author huliqing
 * <p><b>qq：</b>31703299
 * <p><b>E-mail：</b><a href="mailto:[e-mail]">[e-mail]</a>
 * <p><b>Homepage：</b><a href="http://www.tbuy.biz/">http://www.tbuy.biz/</a>
 */
public class AdminRevokeMusics extends BaseBean{
    private DataModel _revokeMusics;
    private UIData _uiRevokeMusics;
    private int _pageSize = 12;

    /** Creates a new instance of AdminRevokeMusics */
    public AdminRevokeMusics() {
    }
    
    public void setRevokeMusics(DataModel revokeMusics) {
        _revokeMusics = revokeMusics;
    }

    public DataModel getRevokeMusics() {
        if (_revokeMusics == null) {
            _revokeMusics = new LocalDataModel(_pageSize);
        }
        return _revokeMusics;
    }
    
    public void setUiRevokeMusics(UIData uiRevokeMusics) {
        _uiRevokeMusics = uiRevokeMusics;
    }
    
    public UIData getUiRevokeMusics() {
        return _uiRevokeMusics;
    }
    
    public void setPageSize(int pageSize) {
        _pageSize = pageSize;
    }
    
    public int getPageSize() {
        return _pageSize;
    }
    
     /*** page about ******************************************/
    private  DataPage getDataPage(int startRow, int pageSize) {
        int total;
        List<MusicModel> dataList = null;
        total = MusicAction.getTotalRevokes();
        dataList = MusicAction.getRevokeMusicsForPage(startRow, pageSize);
        return new DataPage(total, startRow, dataList);
    }
    
    private class LocalDataModel extends PagedListDataModel {
        public  LocalDataModel(int pageSize) {
             super(pageSize);
        }
        
        public DataPage fetchPage(int startRow,int pageSize) {
             // call enclosing managed bean method to fetch the data 
             return getDataPage(startRow, pageSize);
        }
    }
    
    /**
     * 恢复一条记录
     */
    public String revert() {
        MusicModel music = (MusicModel)_uiRevokeMusics.getRowData();
        music.setBeRevoke(false);   // 设置为非回收状态
        if (MusicAction.updateMusic(music)) {
            Utils.addInfoMessage(getBundle(), "恢复音乐信息成功！");
            _revokeMusics = new LocalDataModel(_pageSize);
            return Constants.OUT_SUCCESS;
        } else {
            Utils.addErrorMessage(getBundle(), "恢复信息时遇到问题");
            return Constants.OUT_FAILURE;
        }
    }
    
    /**
     * 清空所有已回收的音乐信息
     */
    public String clear() {
        List<MusicModel> musicsRevoke = MusicAction.getAllRevokes();
        List<MusicModel> musics = MusicAction.deleteMusics(musicsRevoke);
        if (musics != null && !musics.isEmpty()) {
            for (MusicModel music : musics) {
                File file = new File(getComApplication().getServletContextPath() 
                        + BBSGroups.PATH_MUSIC_LRC + music.getLrc());
                file.delete();
            }
        }
        _revokeMusics = new LocalDataModel(_pageSize);  // 清空后重新载入信息
        return Constants.OUT_SUCCESS;
    }
}