/*****************************************************************************
* *
* This file is part of the tna framework distribution. *
* Documentation and updates may be get from biaoping.yin the author of *
* this framework *
* *
* Sun Public License Notice: *
* *
* The contents of this file are subject to the Sun Public License Version *
* 1.0 (the "License"); you may not use this file except in compliance with *
* the License. A copy of the License is available at http://www.sun.com *
* *
* The Original Code is tag. The Initial Developer of the Original *
* Code is biaoping yin. Portions created by biaoping yin are Copyright *
* (C) 2000. All Rights Reserved. *
* *
* GNU Public License Notice: *
* *
* Alternatively, the contents of this file may be used under the terms of *
* the GNU Lesser General Public License (the "LGPL"), in which case the *
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*****************************************************************************/
package com.frameworkset.common.tag.pager.model;
import java.util.Stack;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.PageContext;
import com.frameworkset.common.tag.pager.DataInfo;
import com.frameworkset.common.tag.pager.DataInfoImpl;
import com.frameworkset.common.tag.pager.DefaultDataInfoImpl;
import com.frameworkset.common.tag.pager.tags.LoadDataException;
import com.frameworkset.common.tag.pager.tags.PagerTag;
/**
* 输出数据到word，pdf，excel，cvs，xml文件，
* 包括详细信息的输出，分页数据的输出，列表数据的输出，
* 分页数据输出又包括只输出当前页数据和全部数据的两种模式
* @author biaoping.yin
* created on 2005-5-18
* version 1.0
*/
public class PageModel extends PagerTag implements ModelObject
{
/**存储分页信息*/
private PageInfo pageInfo;
/**数据获取接口*/
private DataInfo dataInfo;
/**如果不倒出全部记录，则直接从页面dataSet中获取数据*/
private Stack dataSet;
/**
* 控制dataSet的初始化，当要求导出全部记录时调用initial方法时修改first的值
*/
private boolean first = true;
/**
* 初始化所有的生成文件的必要参数
* @param pageInfo
* @param dataInfo
* @param dataSet
* @param pageContext
*/
public void setParameter(PageInfo pageInfo,
DataInfo dataInfo,
Stack dataSet,
PageContext pageContext
)
{
this.pageInfo = pageInfo;
this.setPageContext(pageContext);
this.dataSet = dataSet;
this.dataInfo = dataInfo;
}
/**
* 初始化，分别获取每一页的数据，页面显示模式为分页时调用该方法
* @param offset int
* @param maxPageItem int
*/
public void initial(long offset, int maxPageItem)
{
HttpServletRequest request = getHttpServletRequest();
HttpSession session = request.getSession(false) ;
//如果不是列表
//if(pageInfo.isEportAll())
{
if (dataInfo instanceof DefaultDataInfoImpl) {
DataInfo defaultDataInfo = (DefaultDataInfoImpl) dataInfo;
//分页列表的形式pagerTag不会为空，但是详细信息显示时就会为空
defaultDataInfo.initial(pageInfo.getStatement(),
pageInfo.getDbName(),
offset,
maxPageItem,
false,
request);
//loadClassData(defaultDataInfo.getListItemsFromDB(), null);
}
else if (dataInfo instanceof DataInfoImpl) {
dataInfo.initial(pageInfo.getSortKey(), pageInfo.isList(),
offset,
maxPageItem, false, request);
// try {
// //loadClassData(dataInfo, pageInfo.isList());
// }
// catch (LoadDataException ex) {
// ex.printStackTrace();
// }
//初始化页面的参数
pageInfo.initContext(offset,dataInfo.getItemCount());
}
//设置当前页面数据
if(first)
{
this.dataSet = new Stack();
dataSet.push(this);
}
else
{
dataSet.push(this);
}
}
}
/**
* @return Returns the dataInfo.
*/
public DataInfo getDataInfo()
{
return dataInfo;
}
/**
* @param dataInfo The dataInfo to set.
*/
public void setDataInfo(DataInfo dataInfo)
{
this.dataInfo = dataInfo;
}
/**
* @return Returns the dataSet.
*/
public Stack getDataSet()
{
return dataSet;
}
/**
* @param dataSet The dataSet to set.
*/
public void setDataSet(Stack dataSet)
{
this.dataSet = dataSet;
}
/**
* @return Returns the pageInfo.
*/
public PageInfo getPageInfo()
{
return pageInfo;
}
/**
* @param pageInfo The pageInfo to set.
*/
public void setPageInfo(PageInfo pageInfo)
{
this.pageInfo = pageInfo;
}
}