org.mmbase.module
Class LinkChecker

java.lang.Object
  |
  +--org.mmbase.module.Module
        |
        +--org.mmbase.module.ProcessorModule
              |
              +--org.mmbase.module.LinkChecker

All Implemented Interfaces:

ProcessorInterface, java.lang.Runnable

public class LinkChecker

extends ProcessorModule

implements java.lang.Runnable

The linkChecker module detects broken urls in the urls builder and the jumpers builder. if the linkchecker module is active it will at start up (5 minutes after the MMBase initialisation) and start perfoming checks this wil only happend once every time time MMBase has been started.
for the LinckChecker to work the sendmail modules has to be configured and has to be active

Version:

$Id: LinkChecker.java,v 1.7 2002/03/10 21:33:19 kees Exp $

Author:

Rob vermeulen, Kees Jongenburger

Constructor Summary

LinkChecker()

Method Summary

boolean	checkUrl(java.lang.String url) Checks if an url exists.
java.util.Vector	getList(scanpage sp, StringTagger tagger, java.lang.String value) Generate a list of values from a command to the processor
java.lang.String	getModuleInfo() provide some info on the module
void	init() Initializes the module.
void	maintainance() maintainance call called by the admin module every x seconds.
boolean	process(scanpage sp, java.util.Hashtable cmds, java.util.Hashtable vars) Execute the commands provided in the form values
java.lang.String	replace(scanpage sp, java.lang.String cmds) Replace a command by a string
void	run()
void	start() Deprecated. start and stop methods of Thread should never be overwritten
void	stop() Deprecated. start and stop methods ot Threads should never be overwritten

Methods inherited from class org.mmbase.module.ProcessorModule

cacheCheck, getListBuilder, getNodeList, onload, reload, replace, shutdown, unload

Methods inherited from class org.mmbase.module.Module

getClassName, getInitParameter, getInitParameters, getMaintainer, getMimeType, getMimeTypeFile, getModule, getModule, getModules, getName, getProperties, getProperty, getVersion, hasStarted, loadModulesFromDisk, setClassName, setInitParameter, setMaintainer, setName, setVersion, shutdownModules, startModule, startModules, state

Methods inherited from class java.lang.Object

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

Constructor Detail

LinkChecker

public LinkChecker()

Method Detail

init

public void init()

Description copied from class: Module

Initializes the module. Init can be overridden to read the environment variables it needs.
This method is called by Module.startModule(), which makes sure it is not called more than once. You should not call init() directly, call startModule() instead.

Overrides:

init in class ProcessorModule

getList

public java.util.Vector getList(scanpage sp,
                                StringTagger tagger,
                                java.lang.String value)
                         throws ParseException

Description copied from class: ProcessorModule

Generate a list of values from a command to the processor

Overrides:

getList in class ProcessorModule

Following copied from class: org.mmbase.module.ProcessorModule

Parameters:

sp - the page context

params - contains the attributes for the list

command - the list command to execute.

process

public boolean process(scanpage sp,
                       java.util.Hashtable cmds,
                       java.util.Hashtable vars)

Description copied from class: ProcessorModule

Execute the commands provided in the form values

Overrides:

process in class ProcessorModule

replace

public java.lang.String replace(scanpage sp,
                                java.lang.String cmds)

Description copied from class: ProcessorModule

Replace a command by a string

Overrides:

replace in class ProcessorModule

getModuleInfo

public java.lang.String getModuleInfo()

Description copied from class: Module

provide some info on the module

Overrides:

getModuleInfo in class Module

maintainance

public void maintainance()

Description copied from class: Module

maintainance call called by the admin module every x seconds.

Overrides:

maintainance in class Module

start

public void start()

Deprecated. start and stop methods of Thread should never be overwritten

start the Thread

stop

public void stop()

Deprecated. start and stop methods ot Threads should never be overwritten

stop the Thead

run

public void run()

Specified by:

run in interface java.lang.Runnable

checkUrl

public boolean checkUrl(java.lang.String url)

Checks if an url exists.

Parameters:

the - url to check

Returns:

false if the url does not exist