mytopics.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.TopicAction;
import biz.tbuy.bbs.TopicModel;
import biz.tbuy.common.Constants;
import biz.tbuy.common.page.DataPage;
import biz.tbuy.common.page.PagedListDataModel;
import java.util.List;
import javax.el.ValueExpression;
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 MyTopics extends BaseBean{
    private DataModel _myTopics;    // 主题
    private UIData _uiMyTopics;     // 绑定于主题
    private int _pageSize = 12;     // 默认的分页显示数目
    
    /** Creates a new instance of MyTopics */
    public MyTopics() {
    }
    
    public void setMyTopics(DataModel myTopics) {
        _myTopics = myTopics;
    }
    
    public DataModel getMyTopics() {
        if (_myTopics == null) {
            _myTopics = new LocalDataModel(_pageSize);
        }
        return _myTopics;
    }
    
    public void setUiMyTopics(UIData uiMyTopics) {
        _uiMyTopics = uiMyTopics;
    }
    
    public UIData getUiMyTopics() {
        return _uiMyTopics;
    }

    public void setPageSize(int pageSize) {
        _pageSize = pageSize;
    }
    
    public int getPageSize() {
        return _pageSize;
    }
    
    /*** page about ******************************************/
    private  DataPage getDataPage(int startRow, int pageSize) {
        int total;
        List<TopicModel> dataList = null;
        String userid = getVisitor().getUser().getId();
        total = TopicAction.getTotalTopicsByUserid(userid);
        dataList = TopicAction.getTopicsTyUserid(startRow, pageSize, userid);
        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);
        }
    }
    
    /**
     * 绑定数据并转到主题工具页面topicTools.jsp
     */ 
    public String toShowToolsTopic() {
        TopicModel topic = (TopicModel)_uiMyTopics.getRowData();
        TopicTools tt = new TopicTools();
        tt.setTopic(topic);
        ValueExpression ve = getValueExpression("bbs_topicTools", "requestScope");
        ve.setValue(getELContext(), tt);
        return Constants.OUT_SUCCESS;
    }
}