com.antelmann.servlet
Class DBEntryServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.antelmann.servlet.DBEntryServlet

All Implemented Interfaces:

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

public class DBEntryServlet
extends javax.servlet.http.HttpServlet

a special servlet capable of displaying entries from a database

Since:

08.04.2009, 13:26:41

Author:

Holger Antelmann

See Also:

Serialized Form

Field Summary

protected EntryClassMapper

ecm per default initialized to EntryClassMapper.STRING_MAPPER

Constructor Summary

DBEntryServlet()

Method Summary

protected Connection	createConnection()
protected Database<?>	createDatabase()
protected void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
protected void	doPost(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp)
Database<?>	getDatabase()
void	init()
protected DBReference	makeReference(javax.servlet.http.HttpServletRequest req)
protected void	showEntry(DBEntry entry, javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp) supports HtmlSupported, Imageable, DetailedString and Object.toString().
protected void	wrongInput(javax.servlet.http.HttpServletResponse resp, String msg)

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, log, log

Methods inherited from class java.lang.Object

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

Field Detail

ecm

protected EntryClassMapper ecm

per default initialized to EntryClassMapper.STRING_MAPPER

Constructor Detail

DBEntryServlet

public DBEntryServlet()

Method Detail

init

public void init()
          throws javax.servlet.ServletException

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

createDatabase

protected Database<?> createDatabase()
                              throws Exception

Throws:

Exception

createConnection

protected Connection createConnection()
                               throws SQLException,
                                      GeneralSecurityException

Throws:

SQLException

GeneralSecurityException

getDatabase

public Database<?> getDatabase()

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

doPost

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

Overrides:

doPost in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

makeReference

protected DBReference makeReference(javax.servlet.http.HttpServletRequest req)
                             throws Exception

Throws:

Exception

showEntry

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

supports HtmlSupported, Imageable, DetailedString and Object.toString(). For Imageable entries, the parameter values width and height are supported.

Throws:

javax.servlet.ServletException

IOException

wrongInput

protected void wrongInput(javax.servlet.http.HttpServletResponse resp,
                          String msg)
                   throws IOException

Throws:

IOException