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 1.16 2004/02/13 13:38:34 pierre Exp $

Author:

Rob vermeulen, Kees Jongenburger

Constructor Summary

LinkChecker()

Method Summary

protected boolean	checkUrl(java.lang.String url) Checks if an url exists.
protected void	checkUrls(java.lang.String builderName, java.lang.String fieldName, java.lang.StringBuffer data) Checks if the urls in a specified builder exist.
java.lang.String	getModuleInfo() provide some info on the module
void	init() Initializes the module. Init must 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.
void	run()

Methods inherited from class org.mmbase.module.ProcessorModule

cacheCheck, getList, getListBuilder, getNodeList, onload, process, reload, replace, replace, unload

Methods inherited from class org.mmbase.module.Module

getInitParameter, getInitParameters, getMaintainer, getMimeType, getMimeTypeFile, getModule, getModule, getModules, getName, getProperties, getProperty, getVersion, hasStarted, loadModulesFromDisk, maintainance, setInitParameter, setMaintainer, setName, setVersion, shutdown, 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: ProcessorModule

Initializes the module. Init must 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

getModuleInfo

public java.lang.String getModuleInfo()

Description copied from class: Module

provide some info on the module

Overrides:

getModuleInfo in class Module

run

public void run()

Specified by:

run in interface java.lang.Runnable

checkUrls

protected void checkUrls(java.lang.String builderName,
                         java.lang.String fieldName,
                         java.lang.StringBuffer data)

Checks if the urls in a specified builder exist.

Parameters:

builderName - the builder to check

fieldName - the fieldname of the url to check

data - the StringBuffer to append error information to

Returns:

false if the url does not exist

checkUrl

protected boolean checkUrl(java.lang.String url)
                    throws java.net.MalformedURLException,
                           java.io.IOException

Checks if an url exists.

Parameters:

url - the url to check

Returns:

false if the url does not exist, true if the url exists

Throws:

java.net.MalformedURLException

java.io.IOException