Preview.java :  » J2EE » xmlc-2.3 » xmlc » demo » Java Open Source

package xmlc.demo;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import org.enhydra.xml.xmlc.servlet.XMLCContext;
import org.enhydra.xml.xmlc.XMLObject;
import org.enhydra.xml.xmlc.XMLCFactory;
import org.enhydra.xml.xmlc.deferredparsing.XMLCDeferredParsingFactory;

public class Preview extends HttpServlet {

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException {
  XMLObject xmlObj = null;

  /* set up XMLC context and factory */
  XMLCContext context = XMLCContext.getContext(this);
  XMLCFactory factory = context.getXMLCFactory();

  /* Cast the factory so we can use the dynamic loading API */
  XMLCDeferredParsingFactory dpFactory = null;
  if (factory instanceof XMLCDeferredParsingFactory) {
      dpFactory = (XMLCDeferredParsingFactory)factory;
  }

  /* get the path info after /Preview/. Path info is used
   * instead of parameter because it maps nicely into the static
   * pages  */
  String path = req.getPathInfo();

  try {
      if (path != null) {
    path = path.substring(1);
    xmlObj = dpFactory.createFromFile(path);
    if (xmlObj != null) {
        try {
      context.writeDOM(req, resp, xmlObj);
        } catch (Exception e) {
      resp.sendError(resp.SC_NOT_FOUND, "doc '" + path + "' has error");
        }
    } else {
        resp.sendError(resp.SC_NOT_FOUND, "doc '" + path + "' not found");
    }
      } else {
    resp.sendError(resp.SC_NOT_FOUND, "specify '" + path + "'");
      }
  } catch (java.io.IOException ioe) {
      new ServletException (ioe);
  }
    }
}