org.dlese.dpc.vocab
Class MetadataVocabServlet

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          org.dlese.dpc.vocab.MetadataVocabServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class MetadataVocabServlet
extends HttpServlet

Provided as an intialization (and administrative) servlet for the DLESE Metadata UI system (OPML-based controlled vocabularies)

Author:

Ryan Deardorff

See Also:

Serialized Form

Constructor Summary

MetadataVocabServlet()
Constructor for the MetadataServlet object

Method Summary

void	addListener(MetadataVocabReloadListener listener) Registers a Listener to be notified of MetadataVocabReloadEvents.
void	destroy() Shut down sequence.
void	doPost(HttpServletRequest request, HttpServletResponse response) Standard doPost method forwards to doGet
static String	getDateStamp() Return a string for the current time and date, sutiable for display in log files and output to standout:
void	init(ServletConfig config) The standard HttpServlet init method, called only when the servlet is first loaded.
void	loadVocabs() Load/reload a vocab instance (invoked by newVocabsChecker when it detects that the base loader file timestamp has changed)
void	removeListener(MetadataVocabReloadListener listener) Description of the Method
void	setDebug(boolean db) Sets the debug attribute of the DDSServlet object
static void	synchWithCollectionManager(ServletContext context) Grab the MetadataVocab and RepositoryManager from the servlet context, and if both exist, invoke the synchronization of the CM "enabled" states with their corresponding vocabulary "display" states.

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

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

Constructor Detail

MetadataVocabServlet

public MetadataVocabServlet()

Constructor for the MetadataServlet object

Method Detail

init

public void init(ServletConfig config)
          throws ServletException

The standard HttpServlet init method, called only when the servlet is first loaded.

Specified by:

init in interface Servlet

Overrides:

init in class GenericServlet

Parameters:

config -

Throws:

ServletException

loadVocabs

public void loadVocabs()

Load/reload a vocab instance (invoked by newVocabsChecker when it detects that the base loader file timestamp has changed)

synchWithCollectionManager

public static void synchWithCollectionManager(ServletContext context)

Grab the MetadataVocab and RepositoryManager from the servlet context, and if both exist, invoke the synchronization of the CM "enabled" states with their corresponding vocabulary "display" states.

Parameters:

context -

addListener

public void addListener(MetadataVocabReloadListener listener)

Registers a Listener to be notified of MetadataVocabReloadEvents.

Parameters:

listener - The feature to be added to the Listener attribute

removeListener

public void removeListener(MetadataVocabReloadListener listener)

Description of the Method

Parameters:

listener - Description of the Parameter

destroy

public void destroy()

Shut down sequence.

Specified by:

destroy in interface Servlet

Overrides:

destroy in class GenericServlet

doPost

public void doPost(HttpServletRequest request,
                   HttpServletResponse response)
            throws ServletException,
                   IOException

Standard doPost method forwards to doGet

Overrides:

doPost in class HttpServlet

Parameters:

request -

response -

Throws:

ServletException

IOException

getDateStamp

public static String getDateStamp()

Return a string for the current time and date, sutiable for display in log files and output to standout:

Returns:

The dateStamp value

setDebug

public final void setDebug(boolean db)

Sets the debug attribute of the DDSServlet object

Parameters:

db - The new debug value