package oracle.fodemo.storefront.servlet;
 
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
 
import javax.servlet.*;
import javax.servlet.http.*;
 
import oracle.jbo.ApplicationModule;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.ViewObject;
import oracle.jbo.client.Configuration;
import oracle.jbo.domain.BlobDomain;
import oracle.jbo.domain.DBSequence;
import oracle.jbo.domain.Number;
import oracle.jbo.server.ViewObjectImpl;
 
public class ImageServlet
  extends HttpServlet
{
  private static final String CONTENT_TYPE = 
    "image/jpg; charset=windows-1252";
 
  public void init(ServletConfig config)
    throws ServletException
  {
    super.init(config);
  }
 
  public void doGet(HttpServletRequest request, 
                    HttpServletResponse response)
    throws ServletException, IOException
  {
    response.setContentType(CONTENT_TYPE);
    response.setContentType(CONTENT_TYPE);
    String detailProductId = request.getParameter("detail");
    String thumbnailProductId = request.getParameter("thumbnail");
    boolean thumbnail = true;
    String productId = null;
    OutputStream os = response.getOutputStream();
    String amDef = "oracle.fodemo.storefront.store.service.StoreServiceAM";
    String config = "StoreServiceAMLocal";
    ApplicationModule am = 
      Configuration.createRootApplicationModule(amDef, config);
    ViewObjectImpl vo = 
      (ViewObjectImpl) am.findViewObject("ProductImages"); // get view object (the same as used in the table)
    if (detailProductId != null)
    {
      productId = detailProductId;
      thumbnail = false;
    }
    else
    {
      productId = thumbnailProductId;
    }
    vo.defineNamedWhereClauseParam("paramThumbnail", null, null);
    vo.defineNamedWhereClauseParam("paramProductId", null, null);
    vo.setWhereClause("DEFAULT_VIEW_FLAG = :paramThumbnail AND PRODUCT_ID = :paramProductId");
    vo.setNamedWhereClauseParam("paramThumbnail", (thumbnail? "Y": "N"));
    vo.setNamedWhereClauseParam("paramProductId", productId);
    vo.executeQuery();
    Row product = vo.first();
    BlobDomain image = (BlobDomain) product.getAttribute("Image");
 
 
    InputStream is = image.getInputStream();
 
    // copy blob to output
    byte[] buffer = new byte[10 * 1024];
    int nread;
    while ((nread = is.read(buffer)) != -1)
      os.write(buffer, 0, nread);
    os.close();
    vo.setWhereClause(null);
    vo.removeNamedWhereClauseParam("paramProductId");
    vo.removeNamedWhereClauseParam("paramThumbnail");
    Configuration.releaseRootApplicationModule(am, false);
 
  }
}