com.yworks.yfiles.server.graphml.servlets
Class LoadGraphServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.yworks.yfiles.server.graphml.servlets.LoadGraphServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public abstract class LoadGraphServlet

extends javax.servlet.http.HttpServlet

Simple abstract base servlet that can send a GraphML file from the server to the flash client. Subclasses need to override getInputStream(javax.servlet.http.HttpServletRequest) to return a stream to send to the client for a given request.

If getInputStream returns null, the status 204 (no content) response code is sent.

See Also:

Serialized Form

Constructor Summary

LoadGraphServlet()

Method Summary

protected void	doGet(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse)
protected void	doPost(javax.servlet.http.HttpServletRequest httpServletRequest, javax.servlet.http.HttpServletResponse httpServletResponse)
protected String	getContentType() Get the content type that will be used for the response header.
protected abstract InputStream	getInputStream(javax.servlet.http.HttpServletRequest httpServletRequest) Get a stream to send to the client.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LoadGraphServlet

public LoadGraphServlet()

Method Detail

doPost

protected void doPost(javax.servlet.http.HttpServletRequest httpServletRequest,
                      javax.servlet.http.HttpServletResponse httpServletResponse)
               throws javax.servlet.ServletException,
                      IOException

Throws:

javax.servlet.ServletException

IOException

getContentType

protected String getContentType()

Get the content type that will be used for the response header.

Depending on the servlet container configuration, the response content type might determine whether the servlet container sends a compressed response.

Returns:

A conten MIME type. This implementation returns "text/html".

getInputStream

protected abstract InputStream getInputStream(javax.servlet.http.HttpServletRequest httpServletRequest)
                                       throws IOException

Get a stream to send to the client.

Parameters:

httpServletRequest - the request that used by the client.

Returns:

a stream or null.

Throws:

IOException - if an IO failure occurs.

doGet

protected void doGet(javax.servlet.http.HttpServletRequest httpServletRequest,
                     javax.servlet.http.HttpServletResponse httpServletResponse)
              throws javax.servlet.ServletException,
                     IOException

Throws:

javax.servlet.ServletException

IOException