package xin.glue.ui.common.blob;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.zip.GZIPOutputStream;
//import java.util.zip.ZipOutputStream;

import xin.glue.ui.common.PosDBEngine;

import com.posdata.glue.biz.constants.PosBizControlConstants;
import com.posdata.glue.context.PosContext;
import com.posdata.glue.web.control.PosMultipartRequest;

public class PosFileUpload extends PosDBEngine {
	public String runActivity(PosContext ctx) {
		PosMultipartRequest request = ctx.getMultiPartRequest();
		if(request == null)
			return PosBizControlConstants.SUCCESS;

		setParamMap(ctx, "sqlkey", "param");
		for (Iterator iter = request.getFileNames(); iter.hasNext(); ) {
			InputStream in = request.getInputStream(iter.next().toString());
			try {
				ByteArrayOutputStream bout = new ByteArrayOutputStream(in.available());
				//建立 gzip 压缩输出流 
				GZIPOutputStream  gzout = new GZIPOutputStream (bout);
				//设定读入缓冲区尺寸 
				byte[] buf = new byte[1024 * 2];
				int byteRead;
				while ((byteRead = in.read(buf)) != -1) {
					gzout.write(buf, 0, byteRead); 
				}
				//这个在写入 ByteArrayOutputStream 时一定要有，否则不能完全写入 
				gzout.finish();
				ctx.put("BLOBFILE", bout.toByteArray());
				Execute(ctx, "sqlkey", "param", 'i');
				in.close();
				bout.close();
				gzout.close();
			} catch (IOException e) {
				logger.logError(e.getMessage().substring(0, 100));
			}
		}
		return PosBizControlConstants.SUCCESS;
	}
}