searchresult.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.SearchModel;
import biz.tbuy.bbs.TopicAction;
import biz.tbuy.bbs.TopicModel;
import biz.tbuy.common.Utils;
import biz.tbuy.common.page.DataPage;
import biz.tbuy.common.page.PagedListDataModel;
import biz.tbuy.share.StringFilter;
import java.util.ArrayList;
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 SearchResult extends BaseBean{
    private SearchModel _searchModel;    // 查询条件
    private DataModel _result; // 查询结果
    private UIData _uiResult;  // ...
    private int _pageSize = 20;
    
    public SearchResult() {}

    public void setSearchModel(SearchModel searchModel) {
        _searchModel = searchModel;
    }
    
    public SearchModel getSearchModel() {
        return _searchModel;
    }
    
    public void setResult(DataModel result) {
        _result = result;
    }
    
    public DataModel getResult() {
        if (_result == null) {
            _result = new LocalDataModel(_pageSize);
        }
        return _result;
    }
    
    public void setUiResult(UIData uiResult) {
        _uiResult = uiResult;
    }
    
    public UIData getUiResult() {
        return _uiResult;
    }
    
    public void setPageSize(int pageSize) {
        _pageSize = pageSize;
    }
    
    public int getPageSize() {
        return _pageSize;
    }
    
    /** 获取是否允许BBS文章搜索 */
    public boolean isSearchabled() {
        return getBBSApplication().isArticleSearch();
    }
    
    // ------------------------------------------------------------search
    public void search() {
        if (!isSearchabled()) return;
        _result = new LocalDataModel(_pageSize);
        if (_result.getRowCount() == 0) {
            Utils.addWarnMessage(getBundle(), "找不到符合要求的结果，请换个关键词试试！");
        }
    }
    
    /**
     * 截取topic中的content字串并并加亮相应关键字
     * @param topic 原始主题
     * @param sModel 查询条件
     * @return topic 截取主体内容后的topic
     */
    private TopicModel subTopic(TopicModel topic, SearchModel sModel) {
        String keyword = sModel.getKeyword();
        String title = topic.getTitle();
        String content = topic.getContent();
        if (sModel.getByTitle())
            title = StringFilter.IgnoreCaseSearch(topic.getTitle(), keyword);
        if (sModel.getByContent()) {
            int[] fin = StringFilter.findString(content, keyword);
            if (fin[0] == -1 || fin[1] == -1) { // 主体内容中没有匹配的字符串
                content = StringFilter.subString(content, 0, sModel.getLength());
                content = StringFilter.clearBR(content);    // 去除换行换段符
            } else { 
                // 存在匹配字符则截取字段
                if (fin[1] <= sModel.getLength()) {
                    content = StringFilter.subString(content, 0, sModel.getLength());
                } else {
                    content = StringFilter.subString(content, fin[0], sModel.getLength());
                }
                // 去除换行符，并给关键字添加样式
                content = StringFilter.clearBR(content);
                content = StringFilter.IgnoreCaseSearch(content, keyword);
            }
        }
        topic.setTitle(title);
        topic.setContent(content + "...");
        return topic;
    }
    
    // ------------------------------------------------------------page about
    private  DataPage getDataPage(int startRow, int pageSize) {
        int total = 0;
        List<TopicModel> dataList = new ArrayList<TopicModel>();
        total = TopicAction.searchTopicsTotal(_searchModel);
        dataList = TopicAction.searchTopics(_searchModel, startRow, pageSize);
        // 将搜索到的topics信息的主体内容进行截取
        if (dataList != null && !dataList.isEmpty()) {
            for (TopicModel topic : dataList) {
                subTopic(topic, _searchModel);
            }
        }
        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);
        }
    }
    
}