package com.strongit.bi.mbs.model;






/**
 * <p>定基增長(zhǎng)率模型</p>
 * <p>Description:定基增長(zhǎng)率模型的算法(發(fā)展性分析)</p>
 *
 */
import java.math.BigDecimal;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;


public class Base_Rate {
	public String stat(String xmlString)
	{
	Document requestDoc = null;
	try {
		requestDoc = DocumentHelper.parseText(xmlString);
	} catch (DocumentException e1) {
		// TODO Auto-generated catch block
		e1.printStackTrace();
	}
	List<Element> dataList=requestDoc.selectNodes("/Submodel/Data/RowData/ColumnData");
	double[] originData=new double[dataList.size()];
    //獲取原始數(shù)據(jù)
	for(int i=0;i<dataList.size();i++)
	{
		if(dataList.get(i).getText()!=null&&!"".equals(dataList.get(i).getText()))
		{
			originData[i]=Double.valueOf(dataList.get(i).getText()).doubleValue();
		}
	}
	
    //獲取時(shí)間段長(zhǎng)度
	Element timespanElement=(Element)requestDoc.selectSingleNode("/Submodel/Common/Timespan");
	int timespan=0;
	if(timespanElement.getText()!=null&&!"".equals(timespanElement.getText()))
		timespan=Integer.valueOf(timespanElement.getText()).intValue();
    //獲取預(yù)測(cè)時(shí)間長(zhǎng)度
	Element fcstTimespanElement=(Element)requestDoc.selectSingleNode("/Submodel/Common/FcstTimespan");
	int fcstTimespan=0;
	if(fcstTimespanElement.getText()!=null&&!"".equals(fcstTimespanElement.getText()))
		fcstTimespan=Integer.valueOf(fcstTimespanElement.getText()).intValue();
	
	double[] baserate_array = new double[timespan + fcstTimespan];
	for (int m = 1; m < timespan; m++) {
	baserate_array[0] = 0;
	if(originData[0]!=0)
	{
	BigDecimal c = new BigDecimal( ( (originData[m] -
	                                 originData[0]) /
	                               originData[0]) * 100); //定基求差值比率
	
	
	baserate_array[m] = c.setScale(2, BigDecimal.ROUND_HALF_UP).
	   doubleValue();
	}
	}
	
//	  添加應(yīng)用該模型后的時(shí)序結(jié)果
	Element resultDatas=requestDoc.getRootElement().element("ResultDatas");
    Element timeResultData=resultDatas.addElement("ResultData").addAttribute("view","TimeSeries");
    Element timeResultRow=timeResultData.addElement("RowData").addAttribute("label", "定基增長(zhǎng)率");
    for(int i=0;i<baserate_array.length;i++)
    {
    	timeResultRow.addElement("ColumnData").setText(String.valueOf(baserate_array[i]));
    }
	return requestDoc.asXML();
	}
//	public double[] stat(double[] origin_data, String[] parameter_array,
//            int amount_parameter, int timespan, int fcst_timespan, double[][] variable_index) {
//if (String.valueOf(timespan) == null || timespan < 0) {
//timespan = 1;
//}
//if (String.valueOf(fcst_timespan) == null || fcst_timespan < 0) {
//fcst_timespan = 0;
//}
//double[] baserate_array = new double[timespan + fcst_timespan];
//
//try{
//for (int m = 1; m < timespan; m++) {
//baserate_array[0] = 0;
//if(origin_data[0]!=0)
//{
//BigDecimal c = new BigDecimal( ( (origin_data[m] -
//                                 origin_data[0]) /
//                               origin_data[0]) * 100); //定基求差值比率
//
//
//baserate_array[m] = c.setScale(2, BigDecimal.ROUND_HALF_UP).
//   doubleValue();
//}
//}
//}
//catch (Exception he) {
//he.printStackTrace();
//}
//
//return baserate_array;
//}
}