org.beangle.commons.web.filter

Class DelegatingFilterProxy

java.lang.Object

org.beangle.commons.web.filter.GenericHttpFilter

org.beangle.commons.web.filter.DelegatingFilterProxy

All Implemented Interfaces:

javax.servlet.Filter, Disposable, Initializing, ContainerHook

public class DelegatingFilterProxy
extends GenericHttpFilter
implements ContainerHook

Proxy for a standard Servlet 2.3 Filter, delegating to a managed bean that implements the Filter interface. Supports a "targetBeanName" filter init-param in web.xml, specifying the name of the target bean in the application context.

Author:

chaostone

Field Summary

Fields inherited from class org.beangle.commons.web.filter.GenericHttpFilter

logger

Constructor Summary

Constructors

Constructor and Description
DelegatingFilterProxy()

Method Summary

Modifier and Type	Method and Description
void	destroy() Subclasses may override this to perform custom filter shutdown.
void	doFilter(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)
protected String	getTargetBeanName() Return the name of the target bean in the application context.
protected javax.servlet.Filter	initDelegate(Container container)
protected void	initFilterBean() Subclasses may override this to perform custom initialization.
void	notify(Container container)
void	setDelegate(javax.servlet.Filter delegate)
void	setTargetBeanName(String targetBeanName)

Methods inherited from class org.beangle.commons.web.filter.GenericHttpFilter

addRequiredProperty, getFilterConfig, getFilterName, getServletContext, init, init, initParams

Methods inherited from class java.lang.Object

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

Constructor Detail

DelegatingFilterProxy

public DelegatingFilterProxy()

Method Detail

doFilter

public void doFilter(javax.servlet.ServletRequest request,
                     javax.servlet.ServletResponse response,
                     javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

notify

public void notify(Container container)

Specified by:

notify in interface ContainerHook

initFilterBean

protected void initFilterBean()
                       throws javax.servlet.ServletException

Description copied from class: GenericHttpFilter

Subclasses may override this to perform custom initialization. All bean properties of this filter will have been set before this method is invoked.

Note: This method will be called from standard filter initialization as well as filter bean initialization in a application context. Filter name and ServletContext will be available in both cases.

This default implementation is empty.

Overrides:

initFilterBean in class GenericHttpFilter

Throws:

javax.servlet.ServletException - if subclass initialization fails

See Also:

GenericHttpFilter.getFilterName(), GenericHttpFilter.getServletContext()

destroy

public void destroy()

Description copied from class: GenericHttpFilter

Subclasses may override this to perform custom filter shutdown.

Note: This method will be called from standard filter destruction as well as filter bean destruction in a application context.

This default implementation is empty.

Specified by:

destroy in interface javax.servlet.Filter

Specified by:

destroy in interface Disposable

Overrides:

destroy in class GenericHttpFilter

initDelegate

protected javax.servlet.Filter initDelegate(Container container)
                                     throws javax.servlet.ServletException

Throws:

javax.servlet.ServletException

setTargetBeanName

public void setTargetBeanName(String targetBeanName)

getTargetBeanName

protected String getTargetBeanName()

Return the name of the target bean in the application context.

setDelegate

public void setDelegate(javax.servlet.Filter delegate)