org.apache.aries.samples.blog.web.util
Class FormServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.apache.aries.samples.blog.web.util.FormServlet

All Implemented Interfaces:

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

Direct Known Subclasses:

CreateBlogEntryForm, EditAuthorForm

public abstract class FormServlet
extends javax.servlet.http.HttpServlet

See Also:

Serialized Form

Field Summary

static String

ERROR_MESSAGES_ID

Constructor Summary

protected

FormServlet(String id)

Method Summary

static void	addError(javax.servlet.http.HttpServletRequest req, String error)
protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
protected abstract String	getPageTitle(javax.servlet.http.HttpServletRequest req)
protected String	retrieveOrEmpty(javax.servlet.http.HttpServletRequest req, String param)
static void	storeParam(javax.servlet.http.HttpServletRequest req, String id, String param, String value)
protected abstract void	writeCustomHeaderContent(javax.servlet.http.HttpServletRequest req, PrintWriter out)
protected abstract void	writeForm(javax.servlet.http.HttpServletRequest req, PrintWriter out)

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, 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

Field Detail

ERROR_MESSAGES_ID

public static final String ERROR_MESSAGES_ID

See Also:

Constant Field Values

Constructor Detail

FormServlet

protected FormServlet(String id)

Method Detail

addError

public static void addError(javax.servlet.http.HttpServletRequest req,
                            String error)

storeParam

public static void storeParam(javax.servlet.http.HttpServletRequest req,
                              String id,
                              String param,
                              String value)

writeCustomHeaderContent

protected abstract void writeCustomHeaderContent(javax.servlet.http.HttpServletRequest req,
                                                 PrintWriter out)

writeForm

protected abstract void writeForm(javax.servlet.http.HttpServletRequest req,
                                  PrintWriter out)
                           throws IOException

Throws:

IOException

getPageTitle

protected abstract String getPageTitle(javax.servlet.http.HttpServletRequest req)
                                throws IOException

Throws:

IOException

retrieveOrEmpty

protected String retrieveOrEmpty(javax.servlet.http.HttpServletRequest req,
                                 String param)

doGet

protected void doGet(javax.servlet.http.HttpServletRequest req,
                     javax.servlet.http.HttpServletResponse resp)
              throws javax.servlet.ServletException,
                     IOException

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException