package xin.glue.ui.common.blob;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.PageContext;

import com.posdata.glue.biz.constants.PosBizControlConstants;
import com.posdata.glue.biz.control.PosBizProvider;
import com.posdata.glue.context.PosContext;
import com.posdata.glue.dao.vo.PosRow;
import com.posdata.glue.dao.vo.PosRowSet;
import com.posdata.glue.web.control.PosWebConstants;

public class PosExcelManager extends PosBolbManager {
	public PosExcelManager(HttpServletRequest request,
			HttpServletResponse response, JspWriter out, PageContext pageContext) {
		super(request, response, out, pageContext);
	}

	protected void setContext(OutputStream os) throws Exception {
		PosContext context = new PosContext();
		request.setAttribute(PosWebConstants.CONTEXT, context);
		context.put(PosBizControlConstants.SERVICE_NAME, "Excel-Template-service");
		context.put("TMPL_NM", request.getParameter("template"));
		PosBizProvider.getController().doAction(context);
		PosRowSet rowSet = (PosRowSet)context.get("ListResult_0");
		if (rowSet == null || !rowSet.hasNext()) return;

		PosRow row = rowSet.next();
		InputStream in = (InputStream)row.getAttribute("TMPL_CONTENT");
		if (in == null) return;
		String clsName = (String)row.getAttribute("JAVA_CLASS");
		if (clsName == null) return;
		PosExcelInterface excelInferface = (PosExcelInterface)Class.forName(clsName).newInstance();

		excelInferface.setData(dataList, new BufferedInputStream(new GZIPInputStream(in)), os,
				Integer.parseInt(row.getAttribute("DATA_ROW").toString()),
				Integer.parseInt(row.getAttribute("PAGE_SIZE").toString()));

		excelInferface = null;
		dataList.clear();
		in.close();
	}
}