jrun.servlet
Class FilterManager

java.lang.Object
  |
  +--jrun.servlet.FilterManager

public class FilterManager

extends java.lang.Object

Manages filter objects and filter chains.

FilterManager instances are created via a factory method, create(), which will return a FilterManager for the current webapp filters or null indicating that there are no filters to be managed.

Author:

Karl Moss

Field Summary

protected WebAppSecurity	appSecurity
protected javax.servlet.ServletContext	context
protected int	count
protected java.util.Vector	filterChains
protected java.util.Vector	filterMappings
protected java.util.Hashtable	filterObjects
protected java.lang.ClassLoader	loader
protected Logger	logger
static int	MASK_BUCKET_SIZE
protected WebAppMetaData	webAppMetaData

Constructor Summary

protected

FilterManager(javax.servlet.ServletContext context, Logger logger, java.lang.ClassLoader loader)

Method Summary

protected void	clearChainCache()
int	count() Returns the number of Filter objects under the control of this FilterManager
static FilterManager	create(javax.servlet.ServletContext context, WebAppMetaData metadata, WebAppSecurity appSecurity, Logger logger, java.lang.ClassLoader loader) Factory method for creating a FilterManager object.
protected void	createMapping(java.lang.String map, int mapType, FilterObject fo)
void	destroy() Destroys all filter chains and filters
protected void	destroyFilters()
jrun.servlet.Servlet	getFilterChain(jrun.servlet.Servlet servlet, javax.servlet.http.HttpServletRequest request) Gets the filter chain for the request
protected void	init(WebAppMetaData metadata, WebAppSecurity appSecurity)
protected FilterObject	loadFilter(java.lang.String name, java.lang.String className, FilterMetaData filterMetadata)
void	reload(java.lang.ClassLoader loader) Reloads the current filters.
protected long	setMask(long shortMask, java.util.BitSet longMask, int index) Sets the bit on for the given index.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected Logger logger

loader

protected java.lang.ClassLoader loader

context

protected javax.servlet.ServletContext context

webAppMetaData

protected WebAppMetaData webAppMetaData

appSecurity

protected WebAppSecurity appSecurity

filterObjects

protected java.util.Hashtable filterObjects

filterMappings

protected java.util.Vector filterMappings

count

protected int count

MASK_BUCKET_SIZE

public static final int MASK_BUCKET_SIZE

filterChains

protected java.util.Vector filterChains

Constructor Detail

FilterManager

protected FilterManager(javax.servlet.ServletContext context,
                        Logger logger,
                        java.lang.ClassLoader loader)

Method Detail

create

public static FilterManager create(javax.servlet.ServletContext context,
                                   WebAppMetaData metadata,
                                   WebAppSecurity appSecurity,
                                   Logger logger,
                                   java.lang.ClassLoader loader)

Factory method for creating a FilterManager object. If there are no filters for the current webapp this method will return null so that the servlet engine can optimize the call stack.

Parameters:

context - The servlet context ` * @param metadata The WebAppMetaData as read from web.xml

appSecurity - WebAppSecurity to get SecurityFilters from

logger - The logger

loader - The class loader to use

count

public int count()

Returns the number of Filter objects under the control of this FilterManager

init

protected void init(WebAppMetaData metadata,
                    WebAppSecurity appSecurity)

createMapping

protected void createMapping(java.lang.String map,
                             int mapType,
                             FilterObject fo)

loadFilter

protected FilterObject loadFilter(java.lang.String name,
                                  java.lang.String className,
                                  FilterMetaData filterMetadata)

getFilterChain

public jrun.servlet.Servlet getFilterChain(jrun.servlet.Servlet servlet,
                                           javax.servlet.http.HttpServletRequest request)

Gets the filter chain for the request

Parameters:

servlet - The servlet to invoke

request - The request

Returns:

The servlet to invoke which may be a wrapped filter chain

setMask

protected long setMask(long shortMask,
                       java.util.BitSet longMask,
                       int index)

Sets the bit on for the given index.

reload

public void reload(java.lang.ClassLoader loader)

Reloads the current filters. This may happen, for example, if the class loader changes

Parameters:

loader - The new class loader to use

destroy

public void destroy()

Destroys all filter chains and filters

clearChainCache

protected void clearChainCache()

destroyFilters

protected void destroyFilters()