Class NullFilter
- java.lang.Object
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- org.alfresco.repo.web.filter.beans.NullFilter
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- All Implemented Interfaces:
ActivateableBean
,DependencyInjectedFilter
public class NullFilter extends Object implements DependencyInjectedFilter, ActivateableBean
A Benign filter that does nothing more than invoke the filter chain. Allows strategic points of the filter chain to be configured in and out according to the authentication subsystem in use.- Author:
- dward
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Constructor Summary
Constructors Constructor Description NullFilter()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
doFilter(javax.servlet.ServletContext context, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)
ThedoFilter
method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain.boolean
isActive()
void
setActive(boolean active)
Activates or deactivates the bean
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Method Detail
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setActive
public void setActive(boolean active)
Activates or deactivates the bean- Parameters:
active
-true
if the bean is active and initialization should complete
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isActive
public boolean isActive()
- Specified by:
isActive
in interfaceActivateableBean
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doFilter
public void doFilter(javax.servlet.ServletContext context, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain) throws IOException, javax.servlet.ServletException
Description copied from interface:DependencyInjectedFilter
ThedoFilter
method of the Filter is called by the container each time a request/response pair is passed through the chain due to a client request for a resource at the end of the chain. The FilterChain passed in to this method allows the Filter to pass on the request and response to the next entity in the chain.A typical implementation of this method would follow the following pattern:-
1. Examine the request
2. Optionally wrap the request object with a custom implementation to filter content or headers for input filtering
3. Optionally wrap the response object with a custom implementation to filter content or headers for output filtering
4. a) Either invoke the next entity in the chain using the FilterChain object (chain.doFilter()
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4. b) or not pass on the request/response pair to the next entity in the filter chain to block the request processing
5. Directly set headers on the response after invocation of the next entity in the filter chain.- Specified by:
doFilter
in interfaceDependencyInjectedFilter
- Throws:
IOException
javax.servlet.ServletException
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